A Pitch and Roll Attitude Control Method of Ejection Seat Based on Derivation of Attitude Parameters
A technology of ejection seat and attitude parameters, which is applied in the direction of ejection/disembarkation device to achieve the effect of improving life-saving performance
Active Publication Date: 2022-01-07
CHINA AVIATION LIFESAVING INST
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Problems solved by technology
[0003] The purpose of the invention of the method is to overcome the limitation of the attitude control of the single degree of freedom of the ejection seat and solve the problem of life-saving ejection in the unfavorable attitude with a large pitch angle. The rolling attitude control method can effectively improve the life-saving performance of the seat at low speed and unfavorable attitude
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[0021] The present invention will be described in further detail below.
[0022] A pitch and roll attitude control method of an ejection seat based on the derivation of attitude parameters, by adjusting the attitude of the seat, the total momentum of the thrust of the rocket package is maximized, and the motion trajectory of the seat is improved as much as possible; it is characterized in that: On the basis of the ejection seat equipped with roll attitude rockets, a pair of pitch rockets are added to provide the pitching moment required for attitude adjustment, and the sky component A of the rocket package is used (the thrust of the rocket package is equal to the ratio of the sky component force and the total thrust. Relative size) to measure the attitude of the seat, the value range is -1 to 1, the larger the parameter A, the more obvious the thrust of the rocket pack on the seat, and the better the attitude of the seat, so the derivative of the parameter A, through the contro...
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The invention belongs to the field of ejection lifesaving, and relates to an ejection seat pitch and roll attitude control method based on attitude parameter derivation. By adjusting the attitude of the seat, the thrust of the rocket pack can be maximized, and the trajectory of the seat can be improved as much as possible; on the basis of the ejection seat with the rocket in the roll attitude, a pair of pitch rockets are added to provide The pitching moment required for attitude adjustment is calculated in real time by calculating the sky component A of the rocket package and the roll angular velocity coefficient C in the first derivative of A cz , Pitch rate coefficient C fy , control the working timing of the rocket package, rolling rocket, and pitching rocket, improve the trajectory of the seat after it is ejected out of the cabin under various working conditions as a whole, and improve the life-saving performance of the seat in an unfavorable posture.
Description
technical field [0001] The invention belongs to the field of ejection lifesaving, and relates to an ejection seat pitch and roll attitude control method based on attitude parameter derivation. Background technique [0002] Ejection seats mostly adopt the single-roll degree-of-freedom attitude control technology. Rolling attitude rockets are installed on the left and right sides of the ejection seat. The life-saving performance of attitude. Single roll degree of freedom attitude control improves the lifesaving performance of the ejection seat, but it cannot solve the problem of lifesaving ejection in an unfavorable attitude with a large pitch angle. The single roll degree of freedom attitude control technology has limitations. Contents of the invention [0003] The purpose of the invention of the method is to overcome the limitation of the attitude control of the single degree of freedom of the ejection seat and solve the problem of life-saving ejection in the unfavorable ...
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IPC IPC(8): B64D25/10
CPCB64D25/10
Inventor 余志友姜南
Owner CHINA AVIATION LIFESAVING INST