Rocket eight-engine redundancy control method

Abstract

According to the rocket eight-engine redundancy control method, eight engines are evenly distributed in the circumferential direction, and the included angle between the connecting lines of the centers of every two adjacent engines and the center of a rocket is 45 degrees; the swing direction of each engine swing spray pipe is perpendicular to the connecting line of the engine and the center of the rocket. And when part of the engine swing nozzles are out of control, re-calculating the engine swing angle in real time according to the layout of the rest engine swing nozzles, and controlling the rest engines to perform attitude control. Based on the layout that eight engines are connected in parallel, three-channel attitude control of pitching, yawing and rolling is achieved only through swing of the swing spray pipes of the eight engines. Compared with a traditional four-engine layout, according to the eight-engine scheme, the control torque is higher, the swing angle is smaller, more control redundancy exists, part of swing spray pipes can be allowed to be out of control, and three-channel control in the fault state can be achieved.

Description

technical field [0001] The invention relates to the technical field of aircraft design, in particular to a redundant control method for eight rocket engines. Background technique [0002] When the rocket engine swings to achieve attitude control, the traditional method generally adopts a symmetrical layout, among which single-engine, double-engine, and four-engine parallel connections are the most common. The design and implementation of the rocket control system are relatively complicated, and it is hoped that the pitch and yaw channels have the same characteristics, so the eight-engine layout is not used. [0003] At present, there is no engineering realization of eight-engine parallel swing to realize redundant control of rocket attitude. Contents of the invention [0004] In order to realize the redundant control based on the layout of eight engines, the present invention provides a redundant control method for eight engines of a rocket, adopting the layout of eight e...

AI Technical Summary

Problems solved by technology

The design and implementation of the rocket control system is relatively complicated, and the characteristics of the pitch and yaw channels are expected to be consistent, so the layout of eight engines is not adopted

[0003] At present, there is no engineering realization of eight-engine parallel swing to realize redundant control of rocket attitude

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