Method for accurately guiding sublevel return stage of carrier rocket based on ballistic forming

A carrier rocket and sub-stage technology, applied in the direction of guidance, weapon accessories, offensive equipment, etc., can solve the problems of large terminal ballistic inclination angle and difficult realization

Active Publication Date: 2019-01-01
黑龙江省工研院资产经营管理有限公司
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Problems solved by technology

[0004] In order to solve the problem that the existing traditional guidance method is difficult to achieve a large terminal ballistic inclination angle, and at the same time face the precise

Method used

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  • Method for accurately guiding sublevel return stage of carrier rocket based on ballistic forming
  • Method for accurately guiding sublevel return stage of carrier rocket based on ballistic forming
  • Method for accurately guiding sublevel return stage of carrier rocket based on ballistic forming

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Embodiment 1

[0097] A precise guidance method for the sub-stage return stage of a launch vehicle based on virtual proportional guidance, such as figure 1 with figure 2 As shown, the method includes the following steps:

[0098] Step 1: Obtain the real-time position and real-time velocity of the sub-stage of the launch vehicle in the inertial system based on the rocket-borne navigation system including GPS / INS and other devices;

[0099] Step 2: Based on the landing point position and landing speed of the desired target, obtain the sub-stage of the launch vehicle-target longitudinal line-of-sight angle and lateral line-of-sight angle and the sub-stage of the launch vehicle-the component of the angular velocity of the target line-of-sight under the ground system;

[0100] Step 3: Based on the coordinate transformation matrix from the ground system to the ballistic system, obtain the sub-stage of the launch vehicle——the component of the target line-of-sight angular velocity in the ballistic...

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Abstract

The invention provides a method for accurately guiding a sublevel return stage of a carrier rocket based on ballistic forming, and belongs to the technical field of guidance and control. The method ischaracterized in that a virtual inertial sight angular velocity model which uses a grid rudder as an actuator and is composed of the rocket-loaded navigation output sublevel state and before-shootingbinding target information is designed, the optimal guidance expression of ballistic forming under a ballistic system is derived, and then real-time flight overload commands of the sublevel return stage are obtained. The method can effectively improve the sublevel dropping area and sublevel reusing return guidance precision, and effectively ensures high-precision landing of a sublevel at a target landing point with the desired dropping angle by fully utilizing the high control efficiency of the grid rudder in the large dynamic pressure area.

Description

technical field [0001] The invention relates to a trajectory forming-based precise guidance method for the sub-stage return section of a launch vehicle, which belongs to the technical field of guidance and control. Background technique [0002] At present, after the completion of the sub-stage work of our country's rockets, they fall freely without control. The flight paths often pass through densely populated areas, the landing speed is relatively high, and the landing points are scattered in a wide range. , a potential safety hazard. The huge impact force during the fall of the separated body wreckage made the rocket body likely to explode, causing serious damage to surrounding objects, causing great physical and psychological impact on personnel near the landing point, and threatening the safety of ground personnel; For the remaining residual propellant, since conventional toxic propellants are usually used at present, the leakage of propellant after falling to the groun...

Claims

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Application Information

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IPC IPC(8): F41G3/00
Inventor 韦常柱张亮崔乃刚琚啸哲浦甲伦
Owner 黑龙江省工研院资产经营管理有限公司
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