Anti-interference design method for uncontrolled sounding rocket

Abstract

The invention provides an anti-interference design method for an uncontrolled sounding rocket, in order to reduce the performance dispersion of task loading release points and wreckage falling points of a sounding rocket. The method comprises the following steps: (1) selecting static stability of rocket body and engine trust as anti-interference design variables; (2) confirming a trajectory performance deviation rule by simulating and establishing a trajectory model at six degrees of freedom; (3) confirming the values of the anti-interference design variables; (4) confirming a launching condition. According to the method, the process of simulating the trajectory at six degrees of freedom is adopted for confirming the engine thrust coefficient, quality coefficient and stability margin of the rocket body, so that trajectory performance deviation is reduced, the risks of flight mission and detection task are reduced and the dispersion of the wreckage falling points is reduced. According to the method, the trajectory performance deviation of the uncontrolled sounding rocket is effectively reduced under the condition of hardly increasing the cost. The method is suitable for the overall design of the uncontrolled sounding rockets, such as, various sounding rockets and rocket projectiles.

Description

technical field

[0001] The invention belongs to the technical field of aircraft overall design, and mainly relates to a method for determining the overall index of a rocket proposed in order to reduce the performance distribution of a mission load release point of a sounding rocket and a drop point of a rocket wreckage. Background technique

[0002] Sounding rockets are an indispensable and effective tool for space exploration and scientific experiments, and have achieved a large number of application results in the fields of meteorological detection, space environment detection, biological experiments, and verification of new space technologies. For detection tasks that require the use of parachutes for load recovery, the dynamic pressure at the task load release height should meet the parachute opening requirements, and for detection tasks that do not require parachute recovery, the speed, height, and attitude requirements of the task load should be met. However, due to th...

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