JP2014190583A - Flying object - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a flying object making posture control during high altitude flying in which aerodynamic control is difficult, and high swirling force during terminal guiding, compatible.SOLUTION: A flying object 2 includes: a thruster 18 for adjusting the amount of gas jetted in a machine body side surface direction, and controlling thrust in the machine body side surface direction; a steering device 16 for controlling air force generated on a machine body by using a steering blade; a multi pulse rocket motor 10 for generating thrust backward; and a calculator for generating a control command of the gas amount to the thruster 18, a steering angle command to the steering device 16, and a rear step pulse ignition command to the multi pulse rocket motor 10.

Description

  The present invention relates to a flying object.

  The flying object is provided with a rocket motor to obtain thrust. A rocket motor generates gas and injects it backwards. Thereby, the thrust which advances a flying body is obtained.

  The flying object may be provided with a thruster for the purpose of adjusting the course. A thruster injects gas toward the side of a flying body.

  In relation to the above, a flying object is disclosed in Patent Document 1 (Japanese Patent Laid-Open No. 2011-237075). This flying body is filled with a solid propellant divided into a plurality of regions inside the hollow, and is provided at the main body for sequentially igniting and burning the solid propellant for each region, and at the rear of the main body, The main propulsion means for generating thrust by injecting the combustion gas generated by the combustion of the solid propellant in the rear direction of the main body, and the combustion gas generated by the combustion of the solid propellant are provided on the side of the main body. Sub-propulsion means for generating thrust by injecting in the lateral direction is provided. Further, in Patent Document 1, the auxiliary propulsion means uses the combustion gas generated by the combustion of the solid propellant in the region in front of the main body, that is, the combustion by the pulse that is arbitrarily arranged in the subsequent stage in the multi-pulse. It is disclosed that thrust is generated by jetting in the direction to adjust the traveling direction at an arbitrary time.

JP 2011-237075 A

  Flying objects have been required to meet with targets at higher altitudes. FIG. 1 is a schematic view showing the operation of the flying object. FIG. 1 (a) shows the operation of a conventional flying object associating with a target at a relatively low altitude. FIG. 1 (b) shows that the conventional flying object cannot cope with it. The behavior is shown when meeting a target at a relatively high altitude.

  As shown in FIG. 1A, the flying object 2 launched by the launching device 1 is first accelerated (boost), and then flies while controlling the aerodynamic force generated in the aircraft using the steering wing. (Coast). Then, at the end of guidance for meeting with the target 17, the trajectory of the flying object 2 is adjusted so as to meet with the target 17 by obtaining a high turning force using a thruster and a multi-pulse rocket motor.

  On the other hand, as shown in FIG. 1 (b), when meeting with the target 17 at a high altitude, the flying object 2 launched by the launching device 1 is first accelerated, and then the airframe using the steering wing. Let's fly while controlling the aerodynamic force generated. Then, fly for a long time while controlling the attitude outside the aerodynamic control range (the range in which the aerodynamic force generated in the aircraft can be controlled using the steering wing). Then, at the end of guidance for meeting with the target 17, the trajectory of the flying object 2 is adjusted so as to meet with the target 17 by obtaining a high turning force using a thruster and a multi-pulse rocket motor.

  In the conventional flying object, as shown in FIG. 1B, when flying outside the aerodynamic control range, it is necessary to use a thruster for attitude control. If it is used, the high turning force required at the time of terminal guidance cannot be obtained, and it becomes difficult to meet with the target 17, which is a role to be originally played.

  Accordingly, an object of the present invention is to provide a flying body that achieves both attitude control during high-altitude flight, which is difficult to control aerodynamics, and high turning force during terminal guidance.

  A flying body according to the present invention includes a thruster that adjusts the amount of gas injected in the side surface direction of the airframe and controls thrust in the side surface direction of the airframe, a steering device that controls aerodynamic force generated in the airframe using the steering wing, A multi-pulse rocket motor that generates thrust to the thruster, a gas amount control command for the thruster, a steering angle command for the steering device, and a computer that generates a post-stage pulse ignition command for the multi-pulse rocket motor Is a flying body.

  According to the present invention, it is possible to realize a flying body that achieves both attitude control during flying at high altitude, where aerodynamic control is difficult, and high turning force at the time of terminal guidance.

FIG. 1 is a schematic view showing the operation of the flying object. FIG. 2 is a schematic view showing the flying object according to the first embodiment. FIG. 3 is a flowchart showing a flying object operating method. FIG. 4 is a schematic view showing a flying object according to the second embodiment. FIG. 5 is a schematic view showing a flying object according to the third embodiment. FIG. 6 is a schematic view showing a flying object according to the fourth embodiment.

  Hereinafter, embodiments will be described with reference to the drawings.

(First embodiment)
FIG. 2 is a schematic view showing the flying object 2 according to the present embodiment. As shown in FIG. 2, the flying object 2 includes a computer 14, an airframe 15, a thruster 18, and a multi-pulse rocket motor 10. The thruster 18 and the multi-pulse rocket motor 10 are mounted on the airframe 15. Further, the body 15 is provided with a nozzle 12, a thrust deflecting device 20, and a steering device 16.

  The multi-pulse rocket motor 10 is provided for advancing the flying object 2. The multi-pulse rocket motor 10 has a solid propellant 9 and a solid propellant 11. The solid propellant 9 is disposed ahead of the solid propellant 11. Both the solid propellant 9 and the solid propellant 11 are configured to generate combustion gas during combustion. The solid propellant 9 and the solid propellant 11 are partitioned by a partition 13 having heat insulation properties, and can be burned separately.

  The solid propellant 9 and the solid propellant 11 are connected to the nozzle 12 through a space. The combustion gas generated by the solid propellant 9 and the solid propellant 11 is guided to the nozzle 12. The nozzle 12 is disposed so as to face the rear of the flying body 2. The combustion gas guided to the nozzle 12 is injected behind the flying body. Thereby, the thrust which advances the flying body 2 is obtained. In addition, as the partition 13, a metal member can be used, for example.

  The thrust deflecting device 20 is provided for performing thrust vector control, and is attached to the nozzle 12. By changing the direction of the thrust generated in the nozzle 12 by the thrust deflecting device 20, the propulsion direction of the flying object 2 can be controlled.

  The steering device 16 has steering wings, and controls aerodynamic forces generated in the airframe 15 using the steering wings.

  Next, the thruster 18 will be described in detail.

  The thruster 18 has a function of obtaining thrust in the airframe side direction by injecting gas in the airframe side direction.

  Here, the thruster 18 is configured so that the amount of gas to be injected can be adjusted. Further, since the gas amount can be adjusted, the thruster 18 can operate in the attitude control mode and the terminal guidance mode. The attitude control mode is a mode in which a small thrust can be obtained over a long period of time (long term). On the other hand, the terminal guidance mode is a mode in which a large thrust can be obtained over a short time (short period). The gas injection amount per unit time of the thruster 18 in the attitude control mode is smaller than that in the terminal guidance mode. That is, the gas ejection pressure in the attitude control mode is smaller than that in the terminal guidance mode.

  Next, a specific configuration of the thruster 18 will be described.

  The thruster 18 includes a first solid propellant 6, a second solid propellant 7, and a valve 3.

  The first solid propellant 6 is used in the attitude control mode, and has a configuration capable of generating gas for a longer time than the second solid propellant 7. On the other hand, the second solid propellant 7 is used in the terminal guidance mode and has a configuration that generates a larger thrust than the first solid propellant 6. The second solid propellant 7 is disposed in front of the solid propellant 9 of the multi-pulse rocket motor 10. The second solid propellant 7 and the solid propellant 9 are partitioned by a partition wall 8 having heat insulating properties. The first solid propellant 6 is disposed in front of the second solid propellant 7. A heat insulating partition 19 is provided between the first solid propellant 6 and the second solid propellant 7. The valve 3 is disposed in front of the first solid propellant 6. The first solid propellant 6 and the second solid propellant 7 may be ignited by the same ignition device (not shown) or may be ignited by different ignition devices (not shown).

  The valve 3 is provided so as to inject the gas generated by the first solid propellant 6 and the second solid propellant 7 toward the side of the machine body. By injecting gas from the valve 3. A thrust directed to the side of the body 15 is obtained.

  Next, the computer 14 will be described. The computer 14 has a function of controlling operations of the thruster 18, the steering device 16, and the multipulse rocket motor 10.

  The computer 14 controls the operation mode of the thruster 18 by generating a gas amount control command for the thruster 18. For example, the computer 14 acquires data indicating the altitude of the flying object 2 and changes the operation mode of the thruster 18 to the attitude control mode based on the flying altitude. Further, the computer 14 may switch the operation mode of the thruster 18 to the attitude control mode based on the flight time.

  The computer 14 also controls the steering device 16 by generating a steering angle command and sending it to the steering device 16.

  Further, the computer 14 ignites the solid propellant 9 by sending a post-stage pulse ignition command to the multi-pulse rocket motor 10 and controls the operation of the multi-pulse rocket motor 10.

  Next, an operation method of the flying object 2 will be described. FIG. 3 is a flowchart showing a method for operating the flying object 2.

Step S1: Launch First, the flying object 2 is launched toward the target. At the time of launch, the solid propellant 11 is ignited and combustion gas is injected through the nozzle 12.

Steps S2 to S3: Boost and Coast The flying object 2 is accelerated by the combustion of the solid propellant 11 (Step S2). After the combustion of the solid propellant 11, the flying object 2 flies by inertia (step S3). The attitude of the flying object 2 is controlled by the steering device 16 until the flying object 2 exceeds the aerodynamic control range (see FIG. 1).

Step S4: Attitude Control Mode When the flying object 2 exceeds the aerodynamic control possible range, the computer 14 generates a command for switching to the attitude control mode and sends it to the thruster 18. As described above, the computer 14 detects that the aerodynamic control range has been exceeded based on the flying altitude and the flying time, for example, and generates a command to switch to the attitude control mode. In response to the switching command, the thruster 18 ignites the first solid propellant 6 and starts the generation of gas. The gas generated by the first solid propellant 6 is injected to the side of the flying body 2 through the valve 3. Thereby, the attitude | position of the flying body 2 is controlled.

Step S5: Terminal Guidance Mode When the flying object 2 approaches the target 17, the computer 14 generates a switching command to the terminal guidance mode and sends it to the thruster 18. Thereby, the operation of the thruster 18 is switched to the terminal guidance mode, and the gas generation by the second solid propellant 7 is started. The gas generated by the second solid propellant 7 is injected through the valve 3 and a high turning force is obtained. Thereby, the course of the flying object 2 is controlled according to the target.

  In this step, the computer 14 generates a command for switching to the terminal induction mode and a post-stage pulse ignition command for the multi-pulse rocket motor 10 almost simultaneously. Thereby, in the multipulse rocket motor 10, the solid propellant 9 is ignited and the flying object 2 is reaccelerated. However, the generation timing of the post-stage pulse ignition command (the timing at which the solid propellant 9 is ignited) may be after the combustion of the solid propellant 11, and it is not necessarily the same as the generation timing of the switching command to the terminal induction mode. There is no.

  Then, the effect of this embodiment is demonstrated.

  In this embodiment, since the thruster 18 has the first solid propellant 6 and the second solid propellant 7, the amount of gas to be injected can be adjusted. Therefore, the operation mode of the thruster 18 can be switched between the attitude control mode and the terminal guidance mode. In the attitude control mode, the first solid propellant 6 generates a small thrust over a long time. On the other hand, at the time of terminal induction, the second solid propellant 7 can obtain a large thrust over a short time. That is, even after the attitude control is performed outside the aerodynamic control range, it is possible to obtain a high turning force during the terminal guidance.

  Further, according to the present embodiment, the gas generated by the first solid propellant 6 and the gas generated by the second solid propellant 7 are both injected through the valve 3. That is, the valve 3 is common to the first solid propellant 6 and the second solid propellant 7. There is no need to prepare a plurality of valves 3, the manufacturing cost can be reduced, and the structure can be simplified.

  In the present embodiment, the case where the first solid propellant 6 is disposed in front of the second solid propellant 7 via the partition 19 has been described. However, these arrangements are not particularly limited as long as the gas is led to the valve 3. For example, the 1st solid propellant 6 and the 2nd solid propellant 7 are arrange | positioned in the same housing | casing, and what is called a multipulse gas generator may be comprised. On the other hand, two sets of solid propellants and an ignition device may be arranged in separate cases.

  In the present embodiment, the case where the first solid propellant 6 is used for posture control and the second solid propellant 7 is used for terminal guidance has been described. However, the first solid propellant 6 and the second solid propellant 7 can be replaced with other mechanisms that can inject gas, respectively. For example, instead of each solid propellant (6, 7), a high-pressure gas cylinder (a container filled with high-pressure gas) can be used. Preferably, a high-pressure gas cylinder is used for the attitude control mode, and a solid propellant is used for the terminal guidance mode. A high-pressure gas cylinder is difficult to obtain a large thrust as compared with a solid propellant. However, the high-pressure gas cylinder can generate gas for a longer time than the solid propellant. Therefore, the high-pressure gas cylinder can easily satisfy the characteristics required in the attitude control mode, and can maintain the attitude for a longer time outside the aerodynamic control possible range.

  Moreover, in this embodiment, the case where the gas amount to inject was adjustable by having the 1st solid propellant 6 and the 2nd solid propellant 7 was demonstrated. However, the thruster 18 may adopt another structure as long as the amount of gas to be injected can be adjusted. For example, the amount of gas to be injected may be adjusted by using a device capable of adjusting the combustion pressure as the valve 3. In this case, the thruster 18 only needs to be provided with a single mechanism (solid propellant) that generates gas. Even if such a configuration is adopted, the combustion pressure can be adjusted, so that it is possible to switch between the attitude control mode (the combustion pressure is adjusted to be small) and the terminal guidance mode (the combustion pressure is adjusted to be large). In the terminal guidance mode, the amount of gas that can be injected by the thruster 18 can be preserved, and a high turning force can be obtained in the terminal guidance mode.

(Second Embodiment)
Next, the second embodiment will be described. FIG. 4 is a schematic view showing the flying object 2 according to the present embodiment. In the present embodiment, the configuration of the thruster 18 is changed with respect to the first embodiment. About the other point, since the structure similar to 1st Embodiment is employable, it abbreviate | omits about detailed description.

  As shown in FIG. 4, in the present embodiment, the thruster 18 includes a first valve 3-1 and a second valve 3-2. The second valve 3-2 is disposed in front of the second solid propellant 7. The first solid propellant 6 is disposed in front of the second valve 3-2. The first valve 3-1 is disposed in front of the first solid propellant 6. The first solid propellant 6 is configured to supply the generated gas to the first valve 3-1. The first solid propellant 6 does not supply gas to the second valve 3-2. On the other hand, the second solid propellant 7 is configured to supply the generated gas to the second valve 3-2. The second solid propellant 7 does not supply gas to the first valve 3-1. That is, the first valve 3-1 is used in the attitude control mode. On the other hand, the second valve 3-2 is used in the terminal control mode.

  In the present embodiment, since the first valve 3-1 and the second valve 3-2 are provided, the configuration of the flying body 2 is complicated as compared with the first embodiment. However, the first valve 3-1 can be disposed at a position suitable for posture control, and the second valve 3-2 can be disposed at a position suitable for obtaining a high turning force. Thereby, the precision of attitude control and the precision of turning can be improved, respectively.

(Third embodiment)
Subsequently, a third embodiment will be described. FIG. 5 is a schematic diagram showing the flying object 2 according to the present embodiment. In the present embodiment, the configuration of the second solid propellant 7 is changed with respect to the first embodiment. About the other point, since the structure similar to 1st Embodiment is employable, detailed description is abbreviate | omitted.

  As shown in FIG. 5, in this embodiment, the solid propellant 9 and the second solid propellant 7 are common. That is, the second solid propellant 7 is disposed so as to supply gas to both the valve 3 and the nozzle 12. The first solid propellant 6 is disposed in front of the valve 3. That is, the valve 3 is sandwiched between the first solid propellant 6 and the second solid propellant 7.

  In the present embodiment, when the flying object 2 is launched (step S1: see FIG. 3), the flying object 2 is accelerated by the combustion of the solid propellant 11 (step S2). After combustion of the solid propellant 11, the flying object 2 flies by inertia (step S3). Thereafter, the operation of the thruster 18 enters the attitude control mode, the first solid propellant 6 starts generating gas, and attitude control is performed (step S4). Further, thereafter, the operation of the thruster 18 is switched to the terminal guidance mode (step S5). At the time of terminal induction, gas is generated by the second solid propellant 7 (solid propellant 9). Part of the generated gas is guided to both the nozzle 12 and the valve 3. Thereby, re-acceleration (combustion at the second pulse) and terminal induction are performed simultaneously.

  According to the present embodiment, since the second solid propellant 7 and the solid propellant 9 are used in common, the configuration of the flying object 2 can be further downsized. However, generation of a high turning force and acceleration of the second pulse are performed simultaneously. On the other hand, in the above-described embodiment, generation of a high turning force and acceleration of the second pulse can be executed at different timings. Therefore, from the viewpoint of the degree of freedom of gas generation timing, the above-described embodiment is preferable.

  In the present embodiment, the case where the valve 3 is sandwiched between the first solid propellant 6 and the second solid propellant (solid propellant 9) has been described. However, the valve 3 is not necessarily sandwiched between the first solid propellant 6 and the second solid propellant 7. For example, both the first solid propellant 6 and the second solid propellant 7 may be disposed behind the valve 3.

(Fourth embodiment)
Subsequently, a fourth embodiment will be described. FIG. 6 is a schematic view showing the flying object 2 according to the present embodiment. In the present embodiment, the configuration of the thruster 18 is devised with respect to the third embodiment. About the other point, since the structure similar to 3rd Embodiment is employable, detailed description is abbreviate | omitted.

  As shown in FIG. 6, in the present embodiment, the thruster 18 includes a first valve 3-1 and a second valve 3-2. The second valve 3-2 is disposed in front of the second solid propellant 7 (solid propellant 9). The first solid propellant 6 is disposed in front of the second valve 3-2. The first valve 3-1 is disposed in front of the first solid propellant 6. The first solid propellant 6 is configured to supply the generated gas to the first valve 3-1. The first solid propellant 6 does not supply gas to the second valve 3-2. On the other hand, the second solid propellant 7 is configured to supply the generated gas to the second valve 3-2. The second solid propellant 7 does not supply gas to the first valve 3-1.

  According to the present embodiment, in addition to the operational effects of the third embodiment, the first valve 3-1 can be disposed at a position suitable for posture control, as in the second embodiment. The second valve 3-2 can be arranged at a position suitable for obtaining a turning force. Thereby, the precision of posture control and the precision of course adjustment can be improved, respectively.

  As described above, the present invention has been described using the first to fourth embodiments. These embodiments may be combined within a consistent range. For example, in the second to fourth embodiments, a high pressure gas cylinder may be used instead of the first solid propellant 6.

DESCRIPTION OF SYMBOLS 1 Launcher 2 Flying object 3 Valve 3-1 1st valve 3-2 2nd valve 6 1st solid propellant 7 2nd solid propellant 8 Bulkhead 9 Solid propellant 10 Multipulse rocket motor 11 Solid propellant 12 Nozzle 13 Partition 14 Computer 15 Airframe 16 Steering Device 17 Target 18 Thruster 19 Partition 20 Thrust Deflector

Claims (13)

A thruster that adjusts the amount of gas injected in the direction of the fuselage and controls thrust in the direction of the fuselage
A steering device for controlling the aerodynamic force generated in the airframe using the steering wing;
A multi-pulse rocket motor that generates thrust backward,
A computer for generating a gas amount control command for the thruster, a steering angle command for the steering device, and a post-stage pulse ignition command for the multi-pulse rocket motor;
Flying body equipped with. A flying object according to claim 1,
The thruster has an attitude control mode and a terminal guidance mode as operation modes,
In the attitude control mode, the thruster generates a small thrust over a long period of time,
In the terminal guidance mode, the thruster generates a large thrust over a short period of time. A flying object according to claim 2,
The calculator is
Furthermore,
A flying object characterized in that, at the time of terminal guidance, a switching command to the terminal guidance mode for the thruster and an ignition command for a subsequent pulse to the multi-pal rocket motor are generated almost simultaneously. A flying object according to claim 2 or 3,
The computer further generates a command to switch to the attitude control mode based on the flight altitude. A flying object according to any one of claims 2 to 4,
The computer further generates a switching command to the attitude control mode based on the flight time. A flying object according to any one of claims 2 to 5,
The thruster further comprises:
A first solid propellant that burns in the attitude control mode;
A flying object having a second solid propellant that burns in the terminal induction mode. A flying object according to any one of claims 2 to 5,
The thruster further comprises:
A container filled with high-pressure gas and supplying gas in the attitude control mode;
A flying object having a solid propellant that burns in the terminal induction mode. A flying object according to any one of claims 2 to 5,
The thruster further comprises a solid propellant that burns in the attitude control mode,
A flying body in which gas generated by combustion of the subsequent pulse of the multi-pulse rocket motor is supplied to both the thruster and the nozzle of the multi-pulse rocket motor in the terminal induction mode. A flying object according to any one of claims 2 to 5,
The thruster further comprises a container filled with high-pressure gas and supplying gas in the attitude control mode,
A flying body in which gas generated by combustion of the subsequent pulse of the multi-pulse rocket motor is supplied to both the thruster and the nozzle of the multi-pulse rocket motor in the terminal induction mode. A flying object according to any one of claims 2 to 9,
The thruster further comprises:
A first valve for injecting gas in the attitude control mode;
A flying body comprising a second valve that injects gas in the terminal induction mode. A flying object according to any one of claims 2 to 5,
The thruster further comprises a solid propellant that burns through the attitude control mode and the terminal guidance mode;
The flying object, wherein a combustion pressure of the thruster in the attitude control mode is smaller than a combustion pressure of the thruster in the terminal guidance mode. A flying object according to any one of claims 2 to 5,
The gas generated by the combustion of the first second-stage pulse of the multi-pulse rocket motor in the attitude control mode and the gas generated by the combustion of the second second-stage pulse of the multi-pulse rocket motor in the terminal induction mode are A flying body arranged to supply gas to both the thruster and the nozzle of the multi-pulse rocket motor. A flying object according to any one of claims 2 to 12,
A thrust deflector for changing the direction of thrust generated by the multi-pulse rocket motor;
A flying body with more.

Images