Coupling control method for pitching and rolling of ejection seat based on space moment distribution

An ejection seat and coupling control technology, applied in the direction of control without feedback, ejection/off-machine device, etc., to achieve accurate and rapid adjustment, improve life-saving performance, and improve the effect of motion trajectory

Active Publication Date: 2019-03-19
CHINA AVIATION LIFESAVING INST
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AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is: to solve the problem of lifesaving ejection with large pitch angle and unfavorable posture, the present invention provides a pitch-roll coupling control method of the ejection seat based on spatial moment distribution, which can effectively improve the lifesaving of the seat in low-speed unfavorable posture performance

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  • Coupling control method for pitching and rolling of ejection seat based on space moment distribution
  • Coupling control method for pitching and rolling of ejection seat based on space moment distribution
  • Coupling control method for pitching and rolling of ejection seat based on space moment distribution

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Embodiment Construction

[0020] The present invention will be described in further detail below.

[0021] Such as figure 1 As shown in , when the ejection seat enters the free flight stage from the ejection stage after the ejection starts, the attitude angle of the seat is recorded Calculate the direction S of the resultant moment M that needs to be applied by directly adjusting the seat from the initial position Fht to the target position Fho, Obtain the relative size l of the moments that need to be distributed on the X-axis, Y-axis, and Z-axis of the seat body axis system x , l y , l z . Calculate the torque that needs to be output by each power rocket for attitude adjustment: if |lx|>|lz|, the rolling rocket will use the maximum torque m x Work, adjust or equivalent adjust pitch rocket moment value If |lx|≤|lz|, the pitching rocket takes the maximum moment m z Work, adjust or equivalent adjust the roll rocket moment value

[0022] image 3 , Figure 4 The rolling rocket and the pitc...

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Abstract

The invention belongs to the field of ejection escape, and relates to a coupling control method for pitching and rolling of an ejection seat based on space moment distribution. According to the coupling control method for pitching and rolling of the ejection seat based on the space moment distribution, on the basis of the ejection seat of a rocket with rolling attitude, a pair of pitching rocketsare added for seat attitude control, the attitude of the seat is measured by the celestial component A of a rocket pack (the magnitude of the component force of thrust of the rocket pack in the celestial direction relative to the total thrust), the value range is <->1-1, the larger A is, the more obvious the pushing-up action of the thrust of the rocket pack on the seat is, and the better the attitude of the seat is; according to the attitude angle after the seat comes out of a cabin, the working time sequences of the pitching rockets, rolling rocket and rocket pack are calculated, the attitude of the seat can be adjusted more accurately and rapidly, movement trajectories under various working conditions are improved integrally, and the lifesaving performance of the adverse attitude of theseat is improved.

Description

technical field [0001] The invention belongs to the field of ejection lifesaving, and relates to an ejection seat pitch-roll coupling control method based on space moment distribution. Background technique [0002] The ejection seat mostly adopts the single-degree-of-freedom attitude control technology in the roll direction. By controlling the working timing of the two roll attitude rockets installed on the left and right sides of the ejection seat, the seat attitude is adjusted to improve the life-saving performance of the seat. Single roll degree of freedom attitude control cannot solve the problem of seat ejection rescue under adverse working conditions with large pitch angles, and single roll degree of freedom attitude control technology has limitations. Contents of the invention [0003] The purpose of the present invention is: to solve the problem of lifesaving ejection with large pitch angle and unfavorable posture, the present invention provides a pitch-roll coupli...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64D25/10G05D3/10
CPCG05D3/10B64D25/10
Inventor 余志友姜南
Owner CHINA AVIATION LIFESAVING INST
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