JPH05329278A - Radio control system unmanned helicopter - Google Patents

Abstract

PURPOSE:To constitute the helicopter so that a controller on the ground can grasp data related to an operating state. CONSTITUTION:In the outside of a machine body 2, an indicator 7 for showing data related to an operating state is provided. The data (the speed of revolution of a main rotor, etc.) related to the operating state is transmitted to a controller by a fact that the controller looks at the indicator 7 of the machine body 2. Accordingly, when the speed of revolution of the main rotor is displayed on the indicator 2, a pitch angle can be adjusted exactly and the capacity of the helicopter can be displayed to the maximum. Also, when the remaining quantity of fuel, the remaining quantity of chemicals, a battery voltage value, etc., are displayed, a desired flight can be executed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radio-controlled unmanned helicopter such as an industrial unmanned helicopter or a model helicopter for spraying a drug.

[0002]

2. Description of the Related Art Unlike manned helicopters, radio-controlled unmanned helicopters such as industrial unmanned helicopters for spraying drugs to fields are operated by a ground operator, unlike manned helicopters. It is difficult to obtain data on the operating status such as the remaining amount.

Therefore, for example, when adjusting the main rotor speed by changing the pitch angle of the main rotor,
Indirectly measure the number of revolutions of the main rotor or engine using a measuring instrument that measures changes in light or sound, check if the value is within the standard, and if it is out of the standard, pitch trim the transmitter The pitch angle was adjusted by picking.

[0004]

However, it is troublesome to measure the engine speed and the main rotor speed indirectly by using various measuring instruments as described above.
Since he often relied on his five senses, the adjustment was inaccurate, and helicopter's original performance could not always be achieved.

Further, in the conventional radio-controlled unmanned helicopter, the amount of fuel remaining can only be obtained from experience, so the refueling time is earlier than the optimum time, and the number of takeoffs and landings tends to increase, which makes it impossible to fly as desired. There was also a problem.
Further, with a helicopter that sprays a drug, the remaining amount of the drug cannot be accurately detected, so that the drug spraying amount may not be appropriate.

The present invention has been made in view of the above problems, and provides a radio-controlled unmanned helicopter capable of transmitting data relating to operating conditions such as engine speed and remaining fuel amount to a ground operator. With the goal.

[0007]

A radio-controlled unmanned helicopter according to the present invention is provided with a display device for displaying data relating to a driving state, outside the machine body.

[0008]

The data relating to the driving condition are transmitted to the pilot by the pilot looking at the display of the aircraft.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to FIGS. 1 is a side view of a radio-controlled unmanned helicopter according to the present invention, FIG. 2 is an enlarged side view of an engine portion of a radio-controlled unmanned helicopter according to the present invention, and FIG. 3 is an exploded perspective view of the engine portion. FIG. 4 is an enlarged perspective view showing an essential part of the radio-controlled unmanned helicopter according to the present invention.

In these figures, reference numeral 1 is a radio-controlled unmanned helicopter for spraying medicines. This unmanned helicopter 1
Is a single rotor type in which the main rotor 3 is provided in the front part of the machine body 2, and the engine 4, the fuel tank 5, and a radio control receiver (not shown) are mounted in the machine body 2. Also,
In FIG. 1, 6 is an auxiliary rotor provided at the rear end of the machine body 2, and 7 is an indicator for displaying the rotor speed.

As shown in FIG. 4, the display 7 is provided with a display portion 7a for digitally displaying the number of revolutions of the main rotor 3 by means of an LED on the surface, and as shown in FIGS. It is fixed to the surface. In addition to the above-mentioned position, the mounting position of the display 7 may be the front portion, the rear portion, or the lower surface of the machine body 2 as long as it is relatively easy to see. Also, this display 7
2 and 3, it is connected to a rotor rotation speed sensor indicated by reference numeral 8 and is configured to display the rotation speed of the main rotor 3 detected by the rotor rotation speed sensor 8 on the display unit 7a.

The rotor rotation speed sensor 8 is fixed to the machine body 2 side so as to face the pickup 10 provided on the main mast 9 for driving the rotor with a slight gap. In the present embodiment, the rotor rotation speed sensor 8 detects that the pickup 10 comes into contact with or separates from the tip detecting portion as the main mast 9 rotates as a change in the magnetic flux of the internal coil. Mast 9
The one having a structure for detecting the rotation speed of is used.

As shown in FIG. 2, the main mast 9 has a rotor drive mechanism 11 mounted on the upper end thereof, and the upper and lower gear cases 1 of the power transmission mechanism 12 shown in FIG.
3 and 14 are rotatably supported. The rotor rotation speed sensor 8 is supported and fixed to the upper gear case 13. The rotor rotation speed sensor 8 and the pickup 10 are arranged between the rotor drive mechanism 11 and the power transmission mechanism 12 and below the swash plate 11a of the rotor drive mechanism 11.

In FIG. 3, 15 is a bearing for supporting the main mast 9, 16 is a drive axle connected to the lower end of the main mast 9, and 17 is a ring gear attached to the drive axle 16. Reference numeral 18 is a counter gear that meshes with the ring gear 17, and the counter gear 18 is also rotatably supported by the upper and lower gear cases 13 and 14. A drive gear 19 is fixed to an engine output shaft (not shown). The drive gear 19 meshes with the counter gear 18 to drive the counter gear 18 to rotate.

That is, in this power transmission mechanism, the rotation of the output shaft of the engine 4 is driven from the drive gear 19 via the counter gear 18 and the ring gear 17 to the drive axle 16
The main mast 9 rotates together with the drive axle 16 and the main rotor 3 rotates.
Reference numeral 20 in FIG. 3 is a mast fixing bolt. In FIG. 4, 21 is a transmitter, 22 is an elevator / ladder stick of this transmitter 21, 23 is a throttle / aileron stick, and 24 is a pitch trim knob.

In the unmanned helicopter 1 having the display device 7 as described above, when the engine is started and the main rotor 3 rotates, the number of rotations of the main rotor is displayed on the display portion 7a of the display device 7. Then, for example, when the rotation speed of the main rotor 3 is smaller than the reference rotation speed during takeoff, the transmitter 2
For example, turn the pitch trim knob 24 of 1 in the counterclockwise direction,
The pitch angle of the main rotor 3 is reduced and the rotation speed thereof is adjusted to match the reference rotation speed.

In order to know the number of revolutions of the main rotor 3 during flight, the body 2 is made to fly near the operator or binoculars or the like is used to look at the display 2.

Therefore, according to the radio-controlled unmanned helicopter configured as described above, the pilot can see the display 7 of the machine body 2 so that the main rotor rotation speed as the data regarding the driving state is transmitted to the pilot. become.

In this embodiment, the rotor rotation speed sensor 8 for detecting the rotation speed of the main rotor 4 is arranged in the vicinity of the swash plate 11a to detect the rotation of the main mast 9 itself. In detecting the, the rotation of a member that rotates in the same manner as the main mast 9 may be detected. That is, a pickup may be provided on the rotating member positioned on the axis indicated by the one-dot chain line A in FIG. 3, and the rotation may be detected by the rotation speed sensor.

Further, in order to detect the rotation of the main rotor 4, in addition to directly detecting the rotation of the main mast 9 and the member rotating therewith as described above, a method of detecting from the ignition pulse of the engine 4 is adopted. You can also In such a case, the engine speed obtained from the ignition pulse is arithmetically processed to obtain the main mast rotation speed in consideration of the speed reduction ratio of the power transmission mechanism 12.

Further, in each of the above-mentioned examples, the number of revolutions of the main rotor 3 is used as the data regarding the operating state displayed on the display 7, but in addition to this, the remaining fuel amount, the voltage value of the battery, the remaining amount of the medicine, etc. are displayed. You can also let it.

When the remaining fuel amount is displayed on the display unit 7, the remaining fuel amount can be accurately grasped, and the fuel can be replenished at the most appropriate time.
By displaying the voltage value of the battery, when the voltage value of the battery drops below the standard, you can quickly land and charge the battery or replace it. The drug can be sprayed in a quantity.

Further, as the display unit 7, one display unit 7a is provided as shown in this embodiment, and the display unit 7a is provided.
In addition to the structure in which one type of data is displayed on the screen, a plurality of display units 7a may be provided for each data. Further, when the number of display parts 7a is one in order to reduce the weight, it is possible to display a plurality of data on one display part 7a. If you do so,
A rotation speed sensor, a fuel remaining amount sensor, a battery voltage sensor, a medicine remaining amount sensor, etc. may be connected to the display device 7 via a selection device. As the selection device, a device in which the contact of the wiring from each sensor is switched by a servo motor or a step motor can be considered.

In addition, although the digital display type is adopted as the display in the present embodiment, the present invention is not limited to such a limitation and displays various operating state data using LED lamps of different colors. You can also let it. In such a case, for example, the red LED lamp is turned on when the rotation speed of the main rotor is higher than the reference rotation speed, and the red LED lamp is turned on when the rotation speed is lower than the reference rotation speed.

[0025]

As described above, since the radio-controlled unmanned helicopter according to the present invention is provided with an indicator for displaying data on the driving condition outside the machine, the operator can display the data on the driving condition on the machine. By seeing the vessel, it will be transmitted to the pilot.

Therefore, the pitch angle can be adjusted accurately by displaying the number of revolutions of the main rotor on the display, and the helicopter can be maximized. Further, by displaying the remaining fuel amount, the remaining amount of the medicine, the battery voltage value, etc., it becomes possible to carry out the desired flight without waste.

[Brief description of drawings]

FIG. 1 is a side view of a radio-controlled unmanned helicopter according to the present invention.

FIG. 2 is a side view showing an enlarged engine portion of the radio-controlled unmanned helicopter according to the present invention.

FIG. 3 is an exploded perspective view of an engine portion of the radio-controlled unmanned helicopter according to the present invention.

FIG. 4 is a perspective view showing an enlarged main part of the radio-controlled unmanned helicopter according to the present invention.

[Explanation of symbols]

 1 Radio-controlled unmanned helicopter 3 Main rotor 4 Engine 5 Fuel tank 7 Indicator 8 Rotation speed sensor 9 Main mast 10 Pickup

Claims (1)

[Claims] 1. A radio-controlled unmanned helicopter, characterized in that a display for displaying data relating to a driving state is provided outside the machine body.