JPH10313206A - Antenna system for helicopter and communication equipment for helicopter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow a helicopter to easily and safely land even when the antenna cannot be raised up due to a fault. SOLUTION: A mount member 12 to the inner face of which a buffer member 13 is adhered is welded to a frame 1 of a helicopter antenna system 100. A fixed belt 15 is fitted to one side of the mount member 12 via a shear pin 14. The fixed belt 15 is around a skid S and fixed by a fixing device provided to the other side of the mount member 12. When an external force is exerted to an antenna section 5, the shear pin 14 is cut and the fixed belt gets out of place. Thus, even when an antenna 7 cannot be raised up due to a fault, since the helicopter antenna system 100 is removed from the skid S on emergency, the helicopter can easily and safely landed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a helicopter antenna device and a helicopter communication device, and more particularly to a helicopter antenna device and a helicopter communication device for safely operating a helicopter.

[0002]

2. Description of the Related Art In helicopter communication, it is necessary to prevent radio waves from interfering with a helicopter body.
For this reason, during communication, the antenna is used by being lowered to a position where no interference occurs. When the antenna is used while being lowered, the antenna may not be able to be raised due to a failure of a device for raising and lowering the antenna. In such a case, landing of the helicopter becomes difficult, so it is necessary to urgently retreat the antenna to a position where the helicopter can land.

Conventionally, as such a helicopter antenna device, one disclosed in Japanese Utility Model Publication No. 7-32395 has been known. FIG. 29 shows the antenna device 700 for a helicopter. The helicopter antenna device 700 is mounted on the cross tube C of the helicopter H, and vertically moves the antenna 705 vertically. It is provided with.

The operator of the helicopter H pays attention to the elevation of the antenna 705 as much as possible.
When no longer rises, the antenna 705 is immediately evacuated. When the pilot pulls a lever 706 provided beside the cockpit of the helicopter H, the antenna flip-up device 7
02 is unlocked. Then, the antenna 705 rotates about the main shaft, and rises and retreats to a position where the helicopter H does not hinder landing. If you do this,
The helicopter H can be landed safely and easily.

As a prior art example of the helicopter antenna device, the one described in Japanese Utility Model Publication No. 2-33369 is known. FIG. 30 shows such a helicopter antenna device 800. In the helicopter antenna device 800, a concave groove 803 is formed in advance on the protection pipe 802 of the waveguide 801. When an external force is applied during landing, the protection pipe 802 is bent from the groove 803.
As a result, the antenna 804 can be retreated to a position where the helicopter does not hinder landing, and the helicopter H can land safely and easily.

[0006]

However, helicopter operators cannot be distracted only by raising and lowering the antenna. For example, when news is reported from a helicopter, the fact is that attention is not paid to failure of the antenna elevating device.

However, the antenna jumping device 702 of the helicopter antenna device 700 has a mechanism for jumping the antenna 705 based on the operation of the pilot himself. Therefore, the operator moves the antenna elevating device 701
If the driver does not notice the failure of the antenna, or if the antenna 705 comes into contact with the ground or a building during flight, the operator cannot take immediate action (because the antenna flip-up device 702 cannot be operated immediately). There is a problem that the contact may damage the helicopter antenna device 700. In addition, there is a problem that the operation is troublesome because the operator himself has to operate.

Next, another problem arises in the helicopter antenna device 800 described above. That is, since the antenna 804 is retracted by bending the protection pipe 802, there is a problem that the damage to the helicopter antenna device 800 is inevitable. Safety is first, but actively damaging expensive antenna equipment is not economical.

Returning to FIG. A transmitter 81 and a receiver 82 are installed in the body of the helicopter H, and form a helicopter communication device 850 together with the helicopter antenna device 800. Further, the helicopter antenna device 800 and the transmitter 81 are at a certain distance (2 to 2).
(About 4 m) apart, and transmission of microwaves during that time is performed by a waveguide (or a coaxial cable). However, if the waveguide is long, there is a problem that the line loss increases and the output from the antenna decreases. In addition, there is a problem that the mounting of the helicopter antenna device 800 is troublesome.

In view of the above, the present invention has been made in view of the above, and provides an antenna device for a helicopter capable of easily and evacuating the antenna device to a position where the helicopter can land, thereby reducing damage to the antenna device itself. The purpose is to do. It is another object of the present invention to provide a helicopter communication device capable of suppressing a decrease in the output of an antenna and simplifying the mounting.

[0011]

In order to achieve the above object, a helicopter antenna device according to claim 1 is provided.
An antenna unit for moving the antenna unit to a position where the radio wave does not interfere with the body and the landing gear of the helicopter is provided. Is added, a retracting emergency retracting means for retracting by retracting the antenna unit itself at least to a position above the landing gear.

Further, in the helicopter antenna device according to the second aspect of the present invention, in the helicopter antenna device, when an external force of a predetermined value or more is applied to the antenna portion, the antenna portion shrinks and the weight of the antenna portion decreases due to its own weight. The antenna device is provided with an antenna portion extending / contracting means for extending the portion.

The helicopter antenna device according to a third aspect of the present invention includes an antenna unit moving means for moving the antenna unit to a position where radio waves do not interfere with the helicopter body and the landing device, and is mounted on the outside of the helicopter body or on the landing device. The helicopter antenna device includes emergency removal means for removing the helicopter antenna device from a helicopter body or a landing gear when an external force of a predetermined value or more is applied to the antenna unit.

According to a fourth aspect of the present invention, there is provided the helicopter antenna device, wherein the emergency removal means is configured to connect the helicopter antenna device to the body of the helicopter via a member which is broken when a predetermined load is applied. Or it is attached to the landing gear.

According to a fifth aspect of the present invention, in the helicopter antenna device, the emergency removing means releases the helicopter antenna device via a mechanism for releasing the lock when a predetermined load is applied. To be fixed to the airframe or landing gear.

Further, the helicopter antenna device according to claim 6 is provided with an antenna portion moving means for moving the antenna portion to a position where radio waves do not interfere with the helicopter body and the landing device, and is mounted on the outside of the helicopter body or on the landing device. In the helicopter antenna device, at least the antenna part and a part other than the antenna part are divided into structures, and the antenna part is attached to a part other than the antenna part, and an external force of a predetermined value or more is applied to the antenna part. In the case where the antenna unit is added, a part of the antenna unit is removed from a portion other than the antenna unit, and a part of the antenna unit is provided with an emergency removal unit.

Further, in the helicopter antenna device according to claim 7, in the helicopter antenna device, the partial emergency removal means includes at least the antenna unit via a member that breaks when a predetermined load is applied. It is attached to a part other than the antenna part.

Further, in the helicopter antenna device according to the present invention, in the helicopter antenna device, at least the antenna unit is provided through a mechanism for releasing the partial emergency release means upon receiving a predetermined load. Is locked and attached to a portion other than the antenna portion.

According to a ninth aspect of the present invention, the helicopter antenna device further comprises holding means for holding the detached helicopter antenna device or antenna portion in a suspended state. Things.

According to a tenth aspect of the present invention, in the helicopter antenna device, the helicopter antenna device further comprises an antenna unit moving means for moving the antenna unit to a position where radio waves do not interfere with the helicopter body and the landing gear. In an antenna device for a helicopter attached to the outside of the fuselage or to a landing gear, the antenna unit moving means forms a binding chain including the antenna unit and two arms connected to the antenna unit in a pair. An antenna unit rotating / moving means for rotating / moving the antenna unit by driving the arm, further comprising, when an external force equal to or more than a predetermined value is applied to the antenna unit, connecting the antenna unit to the arm that has stopped driving. Is provided with connection release means for releasing the connection.

The helicopter antenna device according to the eleventh aspect of the present invention is the helicopter antenna device, wherein the helicopter antenna device further comprises a retreat operation suppressing means for suppressing a retreat operation of the antenna portion that has been disconnected from the arm that has stopped driving. It is provided.

Further, the helicopter antenna device according to the twelfth aspect includes an antenna unit moving means for moving the antenna unit to a position where radio waves do not interfere with the helicopter body and the landing device, and is mounted on the outside of the helicopter body or on the landing device. In a helicopter antenna device, the antenna unit moving means moves the antenna unit by transmitting power via a connection unit, and when an external force of a predetermined value or more is applied to the antenna unit, The apparatus is provided with a connection releasing means for releasing the connection of the connection means.

According to a thirteenth aspect of the present invention, in the helicopter antenna device, the helicopter antenna device further comprises a buffer means for buffering an external force applied to the antenna portion.

Further, the communication device for a helicopter according to a fourteenth aspect has an antenna unit moving means for moving the antenna unit to a position where radio waves do not interfere with the body and the landing device of the helicopter, and is provided outside the body of the helicopter or on the landing device. A helicopter antenna device to be mounted;
A transmitter connected to the antenna unit and transmitting a radio wave from the antenna unit to a ground station, a helicopter communication device, wherein the helicopter antenna device is any one of claims 1 to 13. And the transmitter is provided on the side of the helicopter antenna device.

Further, a communication device for a helicopter according to a fifteenth aspect has an antenna unit moving means for moving the antenna unit to a position where radio waves do not interfere with the body of the helicopter and the landing device, and is provided outside the body of the helicopter or on the landing device. A helicopter antenna device to be mounted;
A transmitter connected to the antenna unit and transmitting a radio wave from the antenna unit to a ground station, a helicopter communication device, wherein the helicopter antenna device is any one of claims 1 to 13. And an amplifier for amplifying an output signal from the transmitter is provided on the side of the helicopter antenna device.

A communication device for a helicopter according to a sixteenth aspect of the present invention is the communication device for a helicopter, wherein the antenna unit of the helicopter antenna device includes a directional antenna, and further includes a directional antenna for controlling the directional antenna. It is provided with pointing control means.

[0027]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a helicopter antenna device and a helicopter communication device according to the present invention will be described in detail with reference to the drawings. The present invention is not limited by the embodiment.

(Embodiment 1) FIG. 1 is a perspective view showing a helicopter antenna apparatus 100 according to Embodiment 1 of the present invention. FIG. 2 is an explanatory diagram showing the structure of the helicopter antenna device 100 shown in FIG. Also,
The communication device 11 is attached to the helicopter antenna device 100.
The device provided with 00 is referred to as a helicopter communication device 1000. The frame 1 has a structure in which a metal plate is welded. A drive motor 2 is attached to the frame 1. The frame 1 is provided with a reduction gear 3 composed of four gears 3a to 3d. The rotation of the motor 2 is reduced by the reduction device 3. An antenna unit 5 is attached to the output shaft 4.

The antenna section 5 includes a mounting portion 51 for mounting to the output shaft 4, a cylindrical support member 52 extending from the mounting portion 51, and a communication device 1100 (communication device) provided at an end of the cylindrical support member 52. The configuration of the device will be described later.)
And an omnidirectional antenna 7 used in a microwave band (15 GHz). Communication device 11
Reference numeral 00 denotes a signal transmitting unit (not shown) and a signal receiving unit (not shown) installed in the helicopter, which are connected via a coaxial cable 8. This coaxial cable 8
Extends from the signal transmitting unit and the signal receiving unit in the helicopter, passes through the cylindrical support member 52, and reaches the communication device 1100 provided at the end of the cylindrical support member 52.

Reference numeral 9 denotes a pin actuator. The pin 91 of the pin actuator 9 engages with the locking portion 54 provided on the rotating shaft 53 of the antenna unit 5, and
Is fixed in a rotated state. The pin actuator 9 is
It operates based on the signal of the limit switch 10. Reference numeral 11 denotes a screw hole for screwing the eyebolt.
The screw hole 11 is provided substantially at the center of the frame 1.

Next, a mounting member 12 having a semicircular cross section is welded to the lower surface of the frame 1. A cushioning member 13 such as rubber is attached to the inner surface of the mounting member 12. The cushioning member 13 also has a role of preventing slippage when attached to the skid S. A fixing belt 15 is attached to one edge of the attachment member 12 via a shear pin 14. Shear pin 14
Cuts off when overloaded. On the other hand, the fixing belt 15 is provided with the stopper 1 provided on the other edge of the mounting member 12.
6 fixed. Reference numeral 17 is a main body cover.

FIG. 3 is an explanatory view showing a mounting state of the helicopter antenna device. The helicopter antenna device 100 is attached to a skid S of a helicopter. The reason why the antenna unit 5 is attached to the skid S is to make the antenna unit 5 as far as possible from the body of the helicopter and the landing gear (skid and cross tube) during communication. In addition, you may make it attach to not only the skid S but a cross tube.

First, the helicopter antenna device 100
The helicopter antenna device 100 is mounted on the skid S such that the mounting member 12 of the helicopter is put on the skid S. The cushioning member 13 prevents slip on the skid surface.
Further, even if there is an error between the diameter of the mounting member 12 and the diameter of the skid S, the buffer member 13 absorbs the error. Body cover 17
Is partly openable and closable for installation convenience.

Next, the fixing belt 15 is turned from below the skid S and fixed by the stopper 16. In addition, the thickness of the fixed belt 15 is set to a level that does not hinder landing.

As shown in FIG.
An eyebolt 18 is screwed into 1. A wire 19 is connected to the eyebolt 18, and the other end of the wire 19 is connected to a cross tube C of the helicopter. Usually, the wire 19 is housed in the main body cover 17, but when the helicopter antenna device 100 is removed, it is pulled out by its own weight.

Returning to FIG. 1, the operation of the helicopter antenna device 100 will be described. At the time of non-communication, the antenna unit 5 is held in an up state (represented by a dotted line in FIG. 1). At the time of communication, the antenna unit 5 is rotated around the rotation shaft 53 and lowered to prevent radio interference with the body of the helicopter and the landing gear. The descending command is issued by the pilot from within the helicopter.

When a lowering command is issued, the pin actuator 9 comes off, and the antenna unit 5 is released from the locked state. Subsequently, the antenna unit 5 is rotated by the motor drive and lowered. When the descent is completed, fix in that state. The fixing is performed by the pin actuator 9. On the other hand, the elevation of the antenna unit 5 may be performed in a process opposite to the above.

FIG. 5 is a configuration diagram showing the configuration of the communication device 1100. The communication device 1100 includes a transmitter 1110
And a receiver 1120. Further, the communication device 1100 is a small device of about two cigarette boxes.
The transmitter 1110 includes a modulator 1111 and an amplifier 1112. The modulator 1111 puts a signal wave on a carrier wave. The modulated radio wave is amplified by the amplifier 1112, passes through the circulator 1130, and is radiated from the antenna 7 into the air. The receiver 1120 includes an amplifier 1121 and a demodulator 1122. Amplifier 1121 amplifies the received radio wave. The demodulator 1122 demodulates the amplified radio wave using a local carrier.

The reason why the communication device is provided directly on the antenna 7 is to prevent the output of the transmitter 1110 from being reduced. The transmitter 1110 and the antenna 7 are directly connected by a short waveguide (not shown), and the line loss therebetween is suppressed. Therefore, the transmission efficiency becomes extremely good. In addition, since the communication device 1100 is small, operation is not hindered even if the communication device 1100 is installed on a movable part (the antenna unit 5).
Furthermore, since the piping for the waveguide is not required, the helicopter communication device 1000 can be easily attached.

FIG. 6 is an explanatory diagram relating to emergency removal of the helicopter antenna device 100 shown in FIG. As shown in FIG. 6A, during communication, the antenna unit 5 is used with the antenna unit 5 lowered.

Next, as shown in FIG. 6B, when the helicopter H is to be landed without raising the antenna 5 due to a failure of the helicopter antenna device 100 or carelessness of the pilot, etc. A large external force is applied to the antenna unit 5 by contact with the antenna unit 5. Then, the fixed belt 1
The tensile stress applied to the fixing belt 15 increases, and an excessive load is applied to the shear pin 14 that locks the fixing belt 15. The shear pin 14 is cut when an excessive load is applied. When the shear pin 14 is cut, the fixing belt 15 comes off.
The helicopter antenna device 100 itself is a skid S
Get off. Thus, the helicopter H can land safely.

Further, even when the vehicle hits a rock during a flight, the helicopter antenna device c100 comes off, which is safe. Helicopter antenna device 100
Is suspended by the wire 19 and does not fall. The wire 19 is usually connected to the main body cover 17.
Helicopter antenna device 1 housed inside
It is withdrawn by its own weight of 00. In this way, the expensive antenna device is not wasted. Further, it is difficult to find the camera when the camera is dropped on a mountain or the like. However, if the camera is suspended by the wire 19, such a trouble is not required.

In the first embodiment, when the helicopter antenna device 100 is detached,
4, but is not limited to this. It is self-evident that an element or a member that cuts off when a predetermined stress is applied may be used. For example, the helicopter antenna device 100 may be locked to the skid by a hook-shaped member, and the locking may be released when an external force of a predetermined value or more is applied.

In the first embodiment, the communication device 1
Although the output was prevented from lowering by directly providing the antenna 100 on the antenna 7, the communication device 1100 may be directly installed in the helicopter and the antenna unit 5 may amplify the transmission signal again. FIG. 7 shows a specific example thereof. Communication device 120 in the helicopter H
0, and the communication device 1200 and the helicopter antenna device 100 are connected by a coaxial cable 1201. A power amplifier 1202 is provided in the antenna unit 5. Passing through the coaxial cable 1201 increases heat loss and dielectric loss, and lowers transmission efficiency. Therefore, the transmission signal is amplified by the power amplifier 1202, and the amplified signal is radiated from the antenna 7 to the air.

Even with such a configuration, the communication device 110
The effect substantially equivalent to the case where 0 is provided in the antenna section 5 can be obtained. In addition, if the power amplifier 1202 is provided in the antenna unit 5, the cooling efficiency is improved.

(Embodiment 2) FIG. 8 is a perspective view showing a helicopter antenna apparatus 200 according to Embodiment 2 of the present invention. FIG. 9 is an explanatory diagram showing the structure of the helicopter antenna device 200 shown in FIG. The helicopter antenna device 200 according to the second embodiment controls the pointing of the antenna so as to easily perform long-distance relay transmission of television signals and the like. Further, the communication device 130 is connected to the helicopter antenna device 200.
A device provided with 0 is referred to as a helicopter communication device 2000.

The frame 201 has a structure in which a metal plate is welded. The frame 201 includes a driving motor 202.
Is attached. The rotation of the motor 202 is
The deceleration is transmitted by a worm (not shown) provided on the motor rotation shaft and a worm wheel (not shown) provided on the rotation shaft of the rotating frame having the antenna unit. The antenna unit 205 rotates around the nose direction of the helicopter as an axis (see a dotted arrow in the figure).

The horn antenna 2 is provided in the antenna section 205.
07 is provided rotatably. A communication device 1300 is mounted on the rotating frame 2051 (the configuration of the communication device 1300 will be described later). A waveguide 2055 extends from the communication device 1300, and a horn antenna 207 is connected to an end of the waveguide 2055. The waveguide 2055 is connected to the horn antenna 207.
Are protected by a cylindrical support member 2052 that supports

As described above, the communication device 1300 is connected to the antenna 2
The reason why it is provided immediately above 07 is to prevent a decrease in the output of the transmitter (1310). Transmitter 1310 and antenna 2
07 is directly connected by a short waveguide 2055, and the line loss during this period is suppressed. Therefore, the transmission efficiency becomes extremely good. In addition, since the communication device 1300 is small, operation is not hindered even when the communication device 1300 is installed on a movable portion (the antenna unit 205). Furthermore, since the piping of the waveguide is not required, the helicopter communication device 2000 can be easily attached.

A rotation drive section 2056 is provided on a part of the cylindrical support member 2052. The rotation drive unit 2056 is
A part of the cylindrical support member 2055 has a rotatable structure, and a pulley 2057 is provided therearound.
Further, a motor 2058 serving as a driving source is arranged near the pulley 2057. A pulley 2059 is provided on the rotation shaft of the motor 2058, and a timing belt 2060 is passed between the pulley 2059 on the motor side and the pulley 2057 on the cylindrical support member side. In addition, around the horn antenna 207, an antenna
A radome may be provided.

Reference numeral 211 denotes a screw hole for screwing an eyebolt. The screw hole 211 is provided substantially at the center of the frame 201 in consideration of the balance at the time of suspension.
Next, a mounting member 212 having a semicircular cross section is welded to the side surface of the frame 201. This mounting member 21
A buffer member 213 made of rubber or the like is attached to the inner surface of 2. The cushioning member 213 also has a role of preventing slippage when attached to the skid. Also,
A fixing belt 215 is attached to one edge of the attachment member 212 via a shear pin 214. Shear pin 21
4 breaks when excessive load acts. On the other hand, the fixing belt 215 is fixed by a stopper 216 provided on the other edge of the mounting member 214.

Reference numeral 218 denotes a support rod that is hooked on the cross tube C to support the helicopter antenna device. The support rod 218 prevents the helicopter antenna device from being displaced, and is rotatably attached to one end 201 a of the frame 201. The screw 2181 and the nut 2182 make it expandable and contractible, and a hook 2183 is provided at an end thereof. The hook 2183 has a hook shape so that the helicopter antenna device can be removed smoothly. The helicopter antenna device 200 may be attached to the other end 201b of the frame 201 depending on the attachment position. Reference numeral 217 denotes a main body cover.

Further, the helicopter antenna device has an antenna pointing control unit 250. The antenna pointing control unit 250 includes a magnetic azimuth transmitter (not shown).
Gyro 251 for acquiring the azimuth azimuth of the helicopter with respect to the geomagnetic azimuth obtained by the above, and a command receiving unit 252 for receiving the azimuth command sent from the ground station
A direction control unit 253 that calculates an azimuth of the antenna from the nose azimuth and the set azimuth obtained from the azimuth command, controls the motor based on the calculation result, and directs the horn antenna toward the ground station. A vertical gyro 254 for acquiring the roll angle of the helicopter body, a vertical control unit 255 for driving a motor based on the roll angle acquired by the vertical gyro, and controlling the antenna unit to be perpendicular to the earth coordinates. , Consisting of

FIG. 9 shows a helicopter antenna device 20.
It is a perspective explanatory view showing the attachment state of No. 0. The helicopter antenna device 200 is attached to a helicopter skid S in the same manner as in the first embodiment. Further, in order to prevent displacement due to its own weight or mechanical vibration, a support rod 2 is provided.
The 18 hooks 2183 are hooked on the cross tube C. Further, the eyebolt 18 is attached to the frame 201 and connected to the wire 19, and the end of the eyebolt 18 is connected to the cross tube C.
Connect to

FIG. 10 is a configuration diagram showing the communication device 1300. The communication device 1300 includes a transmitter 1310 and a receiver 1320 used in a microwave band. The communication device 1300 is provided in the helicopter antenna device 200. The transmitter 1310 includes a modulator 1311 and an amplifier 1312. The modulator 1311 puts a signal wave on a carrier wave (15 GHz). The modulated radio wave is amplified by the amplifier 1312,
After passing through the circulator 1330, the horn antenna 207
From the air.

The receiver 1320 includes an amplifier 1321 and a demodulator 1322. Amplifier 1321 amplifies radio waves received by horn antenna 207. Demodulator 13
Reference numeral 22 demodulates the amplified radio wave using a local carrier.

Returning to FIG. 8, the operation of the helicopter antenna device 200 will be described. At the time of non-communication, the antenna unit 205 is held in an up state (represented by a dotted line in FIG. 8). At the time of communication, the antenna unit 205 is rotated about the rotation axis and lowered to prevent radio interference with the helicopter body and the landing gear. The descending command is issued by the pilot from within the helicopter. On the other hand, the elevation of the antenna unit 205 is performed in the reverse procedure. Note that, unlike Embodiment 1, the antenna unit 205 moves up and down laterally with respect to the helicopter. This is because it also serves as a vertical control mechanism.

FIG. 11 shows a helicopter antenna device 2.
It is explanatory drawing about the directivity control of 00. The direction gyro 251 acquires the nose azimuth of the helicopter H with respect to the geomagnetic azimuth N obtained by a magnetic azimuth transmitter (not shown). The command receiving unit 252 receives the azimuth command from the ground station, and acquires the set azimuth of the antenna 207 (the azimuth of the ground station based on the geomagnetic azimuth). continue,
The direction control unit 253 calculates the azimuth of the horn antenna 207 (the angle at which the horn antenna should rotate) from the nose azimuth and the set azimuth, and based on the calculation result, the motor 2
058 to direct the horn antenna 207 toward the ground station G ((a) in the figure).

On the other hand, the vertical gyro 254 acquires the roll angle of the helicopter H. Vertical control unit 255
Drives the motor 202 based on the roll angle acquired by the vertical gyro 254 and controls the axis of the antenna unit 205 to be perpendicular to the ground surface ((b) in the figure).

Next, the helicopter antenna device 20
The emergency removal of 0 will be described. Since the process is substantially the same as that in the case of FIG. 6, this drawing may be referred to.
First, when the antenna unit 205 cannot be lifted due to the failure of the helicopter antenna device 200, or when the operator forgets to lift the antenna unit 205 due to carelessness of the pilot, the antenna unit 205 is lowered. If you try to land the helicopter while standing, the antenna unit 205
Comes into contact with the ground.

When an external force is applied to the antenna unit 205, the tensile stress applied to the fixing belt 215 increases, and an excessive load is applied to the shear pin 214 that locks the fixing belt 215. The shear pin 214 is cut off when a load exceeding a certain value is applied. When the shear pin 214 is cut, the fixed belt 215 comes off, so that the helicopter antenna device itself comes off the skid S. Also, the support rod 218
Since the hook 2183 is hook-shaped, it can be easily removed from the cross tube C. This allows the helicopter to land safely.

Further, even when the vehicle hits a rock during a flight, the helicopter antenna device 200 comes off, which is safe. In addition, the detached helicopter antenna device 2
Since 00 is suspended by the wire 19, it does not fall. The wire 19 is normally housed in the main body cover 217, but is pulled out by its own weight of the helicopter antenna device 200. In this way, the expensive antenna device is not wasted. further,
If it is dropped on a mountain or the like, it will be difficult to find it, but if it is hung by the wire 19, such trouble will not be required.

As in the first embodiment, a member other than the shear pin 214 may be used. Further, similarly to the modification of the first embodiment, a configuration may be adopted in which communication device 1300 is directly installed in a helicopter and an antenna unit 205 amplifies a transmission signal again.

(Embodiment 3) The above-mentioned Embodiment 1
In the second and third embodiments, the helicopter antenna device is urgently removed by breaking the shear pin. However, in the third embodiment, the antenna portion has a telescopic structure, and the antenna portion is pushed up by an external force to reach the upper position of the skid. The difference is that emergency evacuation was used. FIG. 12 is a perspective view showing a helicopter antenna device 300 according to Embodiment 3 of the present invention. The helicopter antenna device 300 is not mounted on the skid, but is directly mounted on the lower surface of the body of the helicopter. Further, a communication device (not shown) is installed in the helicopter.

The antenna section 305 has a cylindrical shape and is capable of expanding and contracting. Reference numeral 317 denotes a main body cover.
A driving device for the antenna unit 305 is built in the main body cover 317 (not shown). This drive device includes a motor and a reduction gear similar to those of the first embodiment (for details, refer to the first embodiment).

FIG. 13 is an explanatory view showing the mounting state of the helicopter antenna device. The helicopter antenna device 300 is attached to the lower surface of the helicopter H. When the helicopter H is attached to the lower surface of the fuselage, the distance from the communication device T installed in the helicopter can be shortened, so that there is an advantage that transmission loss can be reduced.

Returning to FIG. 12, the operation of the helicopter antenna device 300 will be described. At the time of non-communication, the antenna unit 305 is held in an up state (represented by a dotted line in FIG. 12). During communication, the antenna unit 305 is rotated and lowered (indicated by a solid line in FIG. 12) in order to prevent radio wave interference with the helicopter body and the landing gear. The descending command is issued by the pilot from within the helicopter.

FIG. 14 is an explanatory diagram relating to an emergency operation of the helicopter antenna device 300 shown in FIG. At the time of communication, as shown in FIG. 14A, the antenna unit 305 is used in a state of being lowered from the skid S to a lower position.

Next, the helicopter antenna device 30
0 antenna unit or the carelessness of the pilot
If the helicopter H is to be landed without lifting the antenna unit 5, an external force is applied to the antenna unit 305 due to the contact with the ground, and as shown in FIG.
Shrinks. Therefore, in the helicopter landing state, the antenna unit 305 contracts to at least the same position as the skid S, as shown in FIG. Therefore, the helicopter H can land safely. Further, even when the helicopter antenna device 300 collides with a rock or the like during the flight, the helicopter antenna device 300 contracts, which is safe.

Further, even if the antenna part 305 is once contracted, it can be used as it is if the antenna part 305 is extended by its own weight.

(Embodiment 4) FIG. 15 is a perspective view showing a helicopter antenna device 400 according to Embodiment 4 of the present invention. FIG. 16 is a top view of the helicopter antenna device 400 shown in FIG. The helicopter antenna device 400 has a divided structure including an antenna body 401 and a skid mount portion 402,
In an emergency, the antenna body 401 is detached. Also, this helicopter antenna device 4
A device provided with the communication device 1400 in 00 is referred to as a helicopter communication device 4000.

Reference numeral 417 denotes a main body cover. Inside the main body cover 417, a driving device including a motor, a reduction gear, and the like similar to those in the first embodiment is built. The antenna unit 405 is rotated by this driving device to perform the up and down movement.

The antenna section 405 is provided with a cylindrical support member 452.
And a communication device 1 provided at an end of the cylindrical support member 452.
400 and an omnidirectional antenna 407 used in the microwave band (15 GHz). The communication device 1400 includes a signal transmitting unit (not shown) and a signal receiving unit (not shown) installed in the helicopter.
Are connected via a coaxial cable 408.

The coaxial cable 408 passes through the inside of the cylindrical support member 452 and reaches the communication device 1400 provided at the end of the cylindrical support member 452. Note that this communication device 1
The configuration of 400 is the same as that of the first embodiment, and will not be described (see FIG. 5). The reason why the communication device 1400 is provided directly on the antenna 407 is to prevent the output of the transmitter from being reduced.

An attachment member 412 having a semicircular cross section is welded to a lower portion of the skid mount portion 402. The inner surface of the mounting member 412 has a cushioning member 41 such as rubber.
3 is pasted. The cushioning member 413 also has a role of preventing slippage when attached to the skid S. Reference numeral 415 is a fixed belt made of steel. With this fixing belt 415, the skid mount 402 is fixed to the skid. Reference numeral 416 is a stopper for the fixing belt 415.

The antenna body 401 and the skid mount 402 are connected by a wire 419. This is to prevent the antenna main body 401 from falling down. Usually, the wire 419 is stored in the main body cover 417, but is pulled out when the antenna main body 401 is removed and skid.

FIG. 17 is an explanatory perspective view showing a structure for mounting the antenna body 401 and the skid mount portion 402. This will be described with reference to FIG. 16 and FIG. On the side surface of the antenna body 401, two columns 4011 are protruded. A metal ring 4012 and a resin ring 4013 are fitted around the outer periphery of the support column 4011. Further, a ring 4013 also made of resin and a metal ring 4012 are fitted into the end of the column 4011. In the center of the column 4011, a shear pin 4 is provided.
A fixing hole 4014 for inserting the 015 is provided.

The member of the skid mount 402 on the side where the antenna main body 401 is mounted is thick. Further, two groove portions 4021 for inserting the support columns 4011 are provided in the thick portion. Code 40
Reference numeral 22 denotes a fixing hole into which the shear pin 4015 is inserted.

The fixing of the antenna body 401 is performed by
1 is fitted into the groove 4021 (see the arrow in the figure), and the end of the support is fixed with bolts 4016 and the shear pin 4 is fixed.
015 is inserted through the fixing holes 4022 and 4014. Thereby, the skid mount section 402
Is sandwiched between resin rings 4013, 4013. The main fixing is performed by a shear pin 4015.

Further, the antenna main body 401 may be fixed only by the gripping force of the rings 4013, 4013 without using the shear pin 4015. In that case, the tightening of the bolt 4016 is adjusted, and the column 4011 is
Make sure to leave from 1.

The mounting state of the helicopter antenna device 400 will be described with reference to FIG. The helicopter antenna device 400 is attached to the skid S of the helicopter. The reason why the antenna unit 405 is attached to the skid S is to separate the antenna unit 405 from the helicopter body and the landing gear (skid and cross tube) as much as possible during communication. In addition, you may make it attach to not only the skid S but a cross tube.

First, the helicopter antenna device 400
The helicopter antenna device 400 is mounted on the skid S such that the mounting member 412 of the (skid mount 402) is put on the skid S. Cushioning member 41
3 prevents slip on the skid surface. Further, even if there is an error between the diameter of the mounting member 412 and the diameter of the skid S, the buffer member 413 absorbs the error.

Next, the fixing belt 415 is turned from below the skid S and fixed by the stopper 416. In addition,
The thickness of the fixed belt 415 is set to a level that does not hinder landing.

Next, the helicopter antenna device 40
The operation of 0 will be described. At the time of non-communication, the antenna unit 405 is held in an up state (represented by a dotted line in FIG. 15). At the time of communication, an antenna unit 40 is provided to prevent radio interference with the helicopter body and the landing gear.
5 is rotated and lowered (represented by a solid line in FIG. 15). The descending command is issued by the pilot from within the helicopter.

FIG. 18 shows the antenna body 4 shown in FIG.
It is explanatory drawing regarding emergency removal of 01. FIG.
As shown in (a) of FIG.
Rotate and use it in the lowered position.

Next, the helicopter antenna device 40
Antenna 405 due to the failure of the
If an attempt is made to land the helicopter H without raising the section, a large external force is applied to the antenna section 405 due to contact with the ground. Then, an excessive load is applied to the shear pin 4015 connecting the antenna section 401 and the skid mount section 402, and the shear pin 4015 is cut. When the shear pin 4015 is cut, the antenna body 401 comes off the skid mount 402 as shown in FIG. Thus, the helicopter H can land safely.

Also, even in the event of a collision with a rock during flight, etc., the antenna
Is safe because it comes off. Antenna body 401 removed
Is suspended by the wire 419 and does not fall. Note that the wire 419 is usually housed in the main body cover 417, but is pulled out at the time of removal. In this way, the expensive antenna device is not wasted.

In the fourth embodiment, the shear pin 4
The antenna body 401 is detached by cutting the antenna 015, but the invention is not limited to this. Obviously, a structure in which the connection is released by applying a predetermined stress or a member for cutting may be used.

(Embodiment 5) FIG. 19 is a perspective view showing a helicopter antenna apparatus according to Embodiment 5 of the present invention. 20 and 21 are explanatory diagrams showing the internal structure of the helicopter antenna device shown in FIG. In addition, this helicopter antenna device 500
Instead of being mounted on the helicopter skid, it is mounted directly on the underside of the helicopter. The helicopter antenna device 500 provided with the communication device 1500 is referred to as a helicopter communication device 500.
Set to 0.

The antenna section 505 includes a cylindrical support member 552.
And the first arm 510 and the second arm 520, both ends of which are rotatably supported, form a restraining chain. The antenna unit 505 is rotated by the rotation of the first arm 510, and moves up and down. The first arm 510, the second arm 520, and the antenna section 505 are connected with the shear pins 511 and 521 as axes. An antenna 507 is attached to a distal end of the cylindrical support member 552.

At the upper end of the antenna section 505, a roller 53 is provided.
0 is attached, and an evacuation guide 540 is provided at an upper position of the roller 530. The first arm 510 has a shape in which one end is bent, and a guide pin 512 protrudes therefrom. First arm 51
0 is driven by the motor 502. The rotation of the motor 502 is reduced by the rack and pinion 503 and transmitted to the first arm 510. These driving devices are housed in the main body cover 517.

Reference numeral 550 is a power amplifier for amplifying a transmission signal. Reference numeral 508a denotes a coaxial cable for connecting to the communication device. This coaxial cable 508a
Are connected to a power amplifier 550. The transmission signal amplified by the power amplifier 550 is sent to the antenna 507 via the coaxial cable 508b.

The helicopter antenna device 500 is attached to the lower surface of the helicopter H in the same manner as in the third embodiment (not shown). In the case where the helicopter H is mounted on the lower surface of the fuselage, the distance between the helicopter and the communication device installed in the helicopter can be shortened.

FIG. 22 shows a helicopter antenna device 5.
It is explanatory drawing which shows operation | movement of 00. At the time of non-communication, the antenna unit 505 is held in a raised state (position a).
At the time of communication, the antenna unit 505 is rotated to prevent radio interference with the helicopter body and the landing gear,
Lower it. When the first arm 510 is rotated, the antenna unit 505 rotates according to the movement of the second arm 520 (positions b and c). The rotation of the first arm 510 stops when the antenna unit 505 reaches the vertical position (position c). The descending command is issued by the pilot from within the helicopter.

FIG. 23 is an explanatory diagram relating to an emergency operation of the helicopter antenna device 500 shown in FIG. First, a case will be described as an example where a driving device such as the motor 502 stops rotating the first arm 510 due to a failure of an electric system or a mechanical system. As shown in FIG. 23A, during communication, the antenna unit 505 is used with the antenna unit 505 lowered.

Next, the helicopter antenna device 50
0 antenna unit or the carelessness of the pilot
If the user attempts to land the helicopter H without lifting the antenna 5, an external force is applied to the antenna unit 505 due to contact with the ground. The shear pin 511 that rotationally supports the first arm 510 is cut by this external force.

Then, as shown in FIG. 23 (b), when the shear pin 511 is cut, the connection between the first arm 510 and the antenna section 505 is released, and the antenna section 505 is moved by the external force from below to the second arm 520. It is pushed up while being restrained by the movement of. Subsequently, the pushed-up antenna unit 505 (cylindrical support member 552) is connected to the first arm 510.
Abuts on the guide pin 512 projecting therefrom.

As shown in FIG. 23C, when an external force is applied to the antenna unit 505 in a state where the antenna unit 505 is in contact with the guide pin 512, that is, when the antenna unit 505 attempts to land, the antenna unit 505 is moved by the guide pin 512. 50
5 is forcibly rotated. In this way, at the time of landing, the antenna unit 505 retreats to the upper position of the skid S (FIG. 4D). In addition, even if the antenna part 505 escapes the restriction by the guide pin 512, as shown in FIG.
The antenna unit 505 can be retracted by the guide 540.

Next, since the second arm 520 is not driven, it is hardly considered that the second arm 520 cannot rotate due to a failure.
The antenna section 505 can be retracted by the action of the first arm 510, the roller 530, and the guide 540.

Therefore, the helicopter H can land safely. Further, since the antenna unit 505 is forcibly rotated without being pushed up as it is, no damage is caused to the body of the helicopter. Further, even when the vehicle hits a rock or the like during flight, the antenna unit 505 can be evacuated in the same manner as described above. Further, since the power amplifier 550 is provided near the antenna unit 505, a sufficient output can be secured.

(Embodiment 6) FIG. 25 is a perspective view showing a helicopter antenna device 600 according to Embodiment 6 of the present invention. This helicopter antenna device 6
00 is not attached to the skid of the helicopter, but is attached directly to the lower surface of the helicopter. A device in which the communication device 1600 is provided in the helicopter antenna device 600 is referred to as a helicopter communication device 6000.

The antenna section 605 includes a cylindrical support member 652.
And the first arm 610 and the second arm 620, both ends of which are rotatably supported, form a restraining chain. The antenna unit 605 is rotated by the rotation of the first arm 610 and moves up and down. An antenna 607 is attached to a distal end of the cylindrical support member 652. Reference numeral 653 is a buffer member formed of a spring or the like. The buffer member 653 absorbs external force applied to the antenna unit 605 and prevents the antenna unit 605 from being damaged.

Reference numeral 650 is a power amplifier for amplifying a transmission signal. This power amplifier 650 is attached to the second arm 620. FIG. 26 shows a state before the power amplifier 650 is attached. Reference numeral 608a is a coaxial cable for connecting to the communication device. One end of the coaxial cable 608a is connected to the power amplifier 650. The transmission signal amplified by the power amplifier 650 is sent to the antenna 607 via the coaxial cable 608b.

FIG. 27 shows a helicopter antenna device 6.
FIG. The first arm 610 includes the motor 60
2 driven. The rotation of the motor 602 is
03 is decelerated. The power of the motor 602 is
The power is transmitted to the first arm 610 via the clutch 604. These driving devices are housed in the main body cover 617.

The helicopter antenna device 600 is attached to the lower surface of the helicopter H in the same manner as in the third embodiment (not shown). When the helicopter H is mounted on the lower surface of the fuselage, the distance from the communication device installed in the helicopter can be shortened, so that there is an advantage that transmission loss to the power amplifier 650 can be reduced.

Next, the helicopter antenna device 60
The operation of 0 will be described. At the time of non-communication, the antenna unit 605
Is held in a raised state. At the time of communication, the antenna unit 605 is rotated and lowered to prevent radio interference with the helicopter body and the landing gear. When the first arm 610 is rotated, the antenna unit 605 rotates according to the movement of the second arm 620. First arm 510
Stops when the antenna unit 605 reaches the vertical position (see FIG. 22 of the fifth embodiment). The descending command is issued by the pilot from within the helicopter.

Next, the helicopter antenna device 60
The emergency operation of 0 will be described. First, the motor 60
The case where the first arm 610 stops rotating due to a failure of the electric system or the mechanical system of the driving device such as No. 2 will be described as an example. During communication, the antenna unit 605 is used with the antenna unit 605 lowered.

Next, the helicopter antenna device 60
The antenna unit 60
If the helicopter H is to be landed without lifting the antenna 5, an external force is applied to the antenna unit 605 due to the contact with the ground G as shown in FIG. Buffer member 653
Protects the cylindrical support member 652 and the like of the antenna unit 605 from damage, bending, and the like by buffering an external force during landing.

At the time of landing, a force is applied to the first arm 610 via the cylindrical support member 652. First arm 6
Although the first arm 610 is driven by the motor 602, the first arm 610 and the motor 602 are connected via the clutch 604. Therefore, if the external force applied to the first arm 610 is superior to the frictional force of the clutch 604, FIG. (B), the first arm 610 rotates.

Subsequently, the antenna unit 605 is forcibly rotated in the traveling direction at the time of landing of the helicopter.
(C), the helicopter is retracted to a position above the skid S of the helicopter.

As a result, the helicopter H can land safely. Further, since the antenna unit 605 is forcibly rotated without being pushed up as it is, no damage is caused to the body of the helicopter. Further, even in the case of hitting a rock or the like during the flight, the antenna unit 605 can be evacuated in the same manner as described above. Further, since the power amplifier 650 is provided in the antenna unit 605, a sufficient output can be secured. Further, since the power amplifier 650 is provided in the antenna unit 605, cooling efficiency is improved.

[0112]

As described above, according to the helicopter antenna device of the present invention (claim 1), when an external force of a predetermined value or more is applied to the antenna portion, at least the position above the helicopter landing device is increased. Until then, the antenna unit itself has been retracted by pushing up and contracting. Therefore, the helicopter can be reliably landed. Further, the operation by the operator is unnecessary, so that it is easy. Further, the antenna is economical because the antenna is not damaged.

According to the antenna device for a helicopter according to the next invention (claim 2), when an external force of a predetermined value or more is applied to the antenna portion, the antenna portion shrinks and the antenna portion expands due to its own weight. I made it. For this reason, the antenna can be used as it is even if it takes off again after landing in a failure state, which is convenient. This is particularly useful when communication needs to be continued.

According to the helicopter antenna device according to the next invention (claim 3), when an external force of a predetermined value or more is applied to the antenna unit, the helicopter antenna device itself is moved from the helicopter body or the landing device. Removed. Therefore, the helicopter can be reliably landed. Further, the operation by the operator is unnecessary, so that it is easy.

[0115] According to the helicopter antenna device according to the next invention (claim 4), in the emergency removal, the helicopter antenna device is connected to the helicopter body or the landing device via a member that is broken when a predetermined load is applied. , And the member is broken by an external force applied to the antenna unit. For this reason,
Emergency removal is possible with a simple structure.

According to the helicopter antenna device according to the next invention (claim 5), in the emergency removal, the helicopter antenna device is connected to the helicopter body or the helicopter antenna via a mechanism that releases the lock when a predetermined load is received. The locking mechanism is attached to the landing gear and attached, and the locking mechanism is released by an external force applied to the antenna unit. For this reason, emergency removal is possible with a simple structure.

According to the helicopter antenna device according to the next invention (claim 6), at least the antenna portion and a portion other than the antenna portion are divided so that the antenna portion is divided into portions other than the antenna portion. The antenna is detached from a portion other than the antenna when an external force of a predetermined value or more is applied to the antenna. Therefore, the helicopter can be reliably landed. Further, the operation by the operator is unnecessary, so that it is easy.

According to the helicopter antenna device according to the next invention (claim 7), in the emergency removal, the helicopter antenna device is connected to the helicopter body or the landing device via a member that breaks when a predetermined load is applied. , And the member is broken by an external force applied to the antenna unit. For this reason,
Emergency removal is possible with a simple structure.

According to the antenna device for a helicopter according to the next invention (claim 8), the emergency removal is performed by removing at least the antenna unit other than the antenna unit via a mechanism that releases the lock when a predetermined load is received. In such a manner that the locking mechanism is released by an external force applied to the antenna portion. For this reason, emergency removal is possible with a simple structure.

[0120] According to the helicopter antenna device according to the next invention (claim 9), the helicopter antenna device or the antenna portion after being removed is held in a suspended state. Therefore, it is not necessary to waste expensive equipment. In particular, it is effective when detached in the air.

According to a helicopter antenna device according to the next invention (claim 10), a constrained chain is formed including an antenna portion and two arms connected to the antenna portion by a pair. By driving the arm, the antenna portion is rotated and moved, and further, when an external force of a predetermined value or more is applied to the antenna portion, the connection between the antenna portion and the arm that is no longer driven is released. . Therefore, the helicopter can be reliably landed. Further, the operation by the operator is unnecessary, so that it is easy. Further, since the antenna unit is held by the arm that has not been disconnected, it is not necessary to waste expensive equipment.

According to the antenna device for a helicopter according to the next invention (claim 11), the retreating operation of the antenna unit that has been disconnected from the arm that is no longer driven is suppressed, so that the airframe by the antenna unit Damage can be prevented. Also, damage to the antenna unit itself can be prevented.

According to the helicopter antenna apparatus according to the next invention (claim 12), the antenna section is moved by transmitting power via the connecting means, and an external force exceeding a predetermined value is applied to the antenna section. When added, the connection of the connection means is released. Therefore, the helicopter can be reliably landed. Further, the operation by the operator is unnecessary, so that it is easy.

According to the antenna device for a helicopter according to the next invention (claim 13), since a damping means for damping an external force applied to the antenna portion is provided, damage to the antenna portion can be prevented.

According to the communication device for helicopter according to the next invention (claim 14), since the transmitter is provided on the side of the antenna device for helicopter, the line loss from the transmitter to the antenna can be suppressed. In addition, since the waveguide is short, the device configuration is simplified.

According to a helicopter communication device according to the next invention (claim 15), an amplifier for amplifying an output signal from the transmitter is provided on the side of the helicopter antenna device.
Usually, a communication device is installed inside the helicopter body and connected to an antenna outside the helicopter body.Therefore, a route loss occurs during that period and the output from the antenna decreases.However, an amplifier is provided on the side of the helicopter antenna device. ,
Since the amplification is performed, the output of the antenna can be sufficiently ensured.

According to the helicopter communication device according to the next invention (claim 16), since the directional antenna is provided in the antenna section of the helicopter antenna device to perform directional control, the safety of the helicopter landing is ensured. Long-distance relay transmission can be facilitated while ensuring performance.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a helicopter antenna device and a helicopter communication device according to Embodiment 1 of the present invention.

FIG. 2 is an explanatory view showing the structure of the helicopter antenna device and the helicopter communication device shown in FIG. 1;

FIG. 3 is an explanatory view showing an attached state of the helicopter antenna device and the helicopter communication device.

FIG. 4 is an explanatory view showing an attached state of the helicopter antenna device and the helicopter communication device.

FIG. 5 is a configuration diagram illustrating a configuration of a communication device illustrated in FIG. 1;

FIG. 6 is an explanatory diagram relating to emergency removal of the helicopter antenna device and the helicopter communication device shown in FIG. 1;

FIG. 7 is a configuration diagram showing a modification of the helicopter antenna device and the helicopter communication device shown in FIG. 1;

FIG. 8 is a perspective view showing a helicopter antenna device and a helicopter communication device according to Embodiment 2 of the present invention.

9 is an explanatory view showing the structure of the helicopter antenna device and the helicopter communication device shown in FIG. 8;

FIG. 10 is a configuration diagram showing a configuration of the communication device shown in FIG. 8;

FIG. 11 is an explanatory diagram of directivity control of the helicopter antenna device shown in FIG. 8;

FIG. 12 is a perspective view showing a helicopter antenna device according to Embodiment 3 of the present invention.

FIG. 13 is an explanatory view showing an attached state of the helicopter antenna device.

FIG. 14 is an explanatory diagram relating to an emergency operation of the helicopter antenna device shown in FIG. 12;

FIG. 15 is a perspective view showing a helicopter antenna device according to Embodiment 4 of the present invention.

16 is a top view of the helicopter antenna device shown in FIG.

FIG. 17 is an explanatory perspective view showing an attachment structure of an antenna body and a skid mount.

18 is an explanatory diagram relating to emergency removal of the antenna main body shown in FIG.

FIG. 19 is a perspective view showing a helicopter antenna device according to Embodiment 5 of the present invention.

20 is an explanatory diagram showing the internal structure of the helicopter antenna device shown in FIG.

21 is an explanatory view showing the internal structure of the helicopter antenna device shown in FIG.

FIG. 22 is an explanatory view showing the operation of the helicopter antenna device shown in FIG.

FIG. 23 is an explanatory diagram relating to an emergency operation of the helicopter antenna device shown in FIG. 19;

FIG. 24 is an explanatory diagram showing a retracting operation of the antenna unit.

FIG. 25 is a perspective view showing a helicopter antenna device according to Embodiment 6 of the present invention.

26 is an explanatory perspective view showing the helicopter antenna device shown in FIG. 25;

FIG. 27 is an assembly view of the helicopter antenna device shown in FIG. 25.

FIG. 28 is an explanatory diagram showing a retracting operation of the antenna unit.

FIG. 29 is an explanatory diagram showing an example of a conventional helicopter antenna device.

FIG. 30 is an explanatory view showing another example of a conventional helicopter antenna device and helicopter communication device.

[Explanation of symbols]

 Reference Signs List 100 antenna device for helicopter 1000 communication device for helicopter 1 frame 2 motor 3 reduction gear 4 output shaft 5 antenna unit 7 antenna 8 coaxial cable 9 pin actuator 10 limit switch 11 screw hole 12 mounting member 13 buffer member 14 shear pin 15 fixing belt 16 stop Tool 17 Body cover 18 Eyebolt 19 Wire 1100 Communication device 1110 Transmitter 1120 Receiver 1130 Circulator

Claims (16)

[Claims] An antenna device for a helicopter which is provided with an antenna unit moving means for moving an antenna unit to a position where radio waves do not interfere with a body and a landing device of a helicopter, wherein the antenna unit is attached to the outside of the body of the helicopter or to the landing device. When an external force greater than the specified value is applied,
An antenna device for a helicopter, comprising: an emergency retracting means for retracting the antenna unit by retracting the antenna unit at least to a position above the landing device. 2. The antenna device according to claim 1, further comprising an antenna unit expanding / contracting unit that contracts when an external force equal to or more than a predetermined value is applied to the antenna unit, and expands the antenna unit by its own weight. 2. The helicopter antenna device according to 1. 3. A helicopter antenna device provided with an antenna unit moving means for moving an antenna unit to a position where radio waves do not interfere with a helicopter body and a landing device, wherein the antenna unit is attached to the outside of the helicopter body or to the landing device. When an external force greater than the specified value is applied,
An helicopter antenna device comprising an emergency removal means for removing the helicopter antenna device itself from the body or landing gear of the helicopter. 4. The helicopter antenna device is mounted on a helicopter fuselage or a landing gear via a member that breaks when a predetermined load is applied thereto. The antenna device for helicopter according to claim 1. 5. The helicopter antenna device according to claim 5, wherein said emergency removal means is a device in which a helicopter antenna device is locked and attached to a helicopter fuselage or a landing device via a mechanism which releases a lock when a predetermined load is received. The helicopter antenna device according to claim 3, characterized in that: 6. A helicopter antenna device provided with an antenna unit moving means for moving an antenna unit to a position where radio waves do not interfere with a helicopter body and a landing device, wherein the antenna unit is attached to the outside of the helicopter body or to the landing device. And a portion other than the antenna portion in a divided structure, the antenna portion is attached to a portion other than the antenna portion, and when an external force of a predetermined value or more is applied to the antenna portion,
A helicopter antenna device, comprising a part of emergency removing means for removing the antenna part from a part other than the antenna part. 7. The apparatus according to claim 7, wherein said partial emergency removal means has at least said antenna unit attached to a portion other than said antenna unit via a member which breaks when a predetermined load is applied. Item 7. An antenna device for helicopter according to item 6. 8. The partial emergency removal means wherein at least the antenna section is locked and attached to a portion other than the antenna section via a mechanism which releases the lock when a predetermined load is received. The helicopter antenna device according to claim 6, wherein: 9. The apparatus according to claim 3, further comprising holding means for holding the detached helicopter antenna device or antenna portion in a suspended state.
The helicopter antenna device according to any one of the above. 10. A helicopter antenna device provided with an antenna unit moving means for moving an antenna unit to a position where radio waves do not interfere with the body of the helicopter and the landing device, wherein the antenna unit is mounted outside the body of the helicopter or attached to the landing device. Means for rotating the antenna unit by rotating the antenna unit by driving the arm by forming a constrained chain including the antenna unit and the two arms connected to the antenna unit in a pair. A helicopter antenna device, further comprising: a connection releasing unit that releases connection between the antenna unit and the arm that is no longer driven when an external force equal to or more than a predetermined value is applied to the antenna unit. . 11. The helicopter antenna device according to claim 10, further comprising a retreating operation suppressing means for suppressing a retreating operation of the antenna portion that has been disconnected from the arm that has stopped driving. 12. A helicopter antenna device provided with an antenna unit moving means for moving an antenna unit to a position where radio waves do not interfere with the body of the helicopter and the landing device, wherein the antenna unit is mounted outside the body of the helicopter or attached to the landing device. Means for moving the antenna unit by transmitting power via a connection means, and disconnection means for disconnecting the connection means when an external force of a predetermined value or more is applied to the antenna unit. An antenna device for a helicopter, comprising: 13. The helicopter antenna device according to claim 1, wherein the antenna unit further includes a buffer for buffering an external force applied to the antenna unit. 14. A helicopter antenna device having an antenna unit moving means for moving an antenna unit to a position where radio waves do not interfere with the helicopter body and the landing gear, and attached to the outside of the helicopter body or to the landing gear, and the antenna unit A transmitter connected to the antenna unit and transmitting a radio wave from the antenna unit to the ground station, wherein the helicopter antenna device is used as the helicopter antenna device.
3. A helicopter communication device comprising: the helicopter antenna device according to any one of 3. to 3., further comprising the transmitter on the helicopter antenna device side. 15. A helicopter antenna device having an antenna unit moving means for moving the antenna unit to a position where radio waves do not interfere with the helicopter body and the landing gear, and being attached to the outside of the helicopter body or to the landing gear, and the antenna unit A transmitter connected to the antenna unit and transmitting a radio wave from the antenna unit to the ground station, wherein the helicopter antenna device is used as the helicopter antenna device.
3. A helicopter communication device comprising: the helicopter antenna device according to any one of 3); and an amplifier that amplifies an output signal from the transmitter on the helicopter antenna device side. 16. The helicopter antenna device according to claim 14, further comprising: a directional antenna provided in an antenna section of the helicopter antenna device, and further comprising an antenna directional control means for performing directional control of the directional antenna. The helicopter antenna device as described in the above.