Method for simulating six degrees of freedom movement of spinning aircraft

Abstract

The invention belongs to the technical field of aerospace modelling and discloses a method for building the six degrees of freedom movement model of a spinning aircraft. During spinning, the special geometric configuration of an aircraft and air mutually act to provide elevating force for the aircraft, and the aircraft skilfully combines a pulsed detonation engine to provide thrust. Based on classical aerodynamics theorem of momentum and theorem of moment of momentum, a nonlinear mathematical simultaneous differential equation which can descript the center of mass motion and the center of mass surrounding motion is deduced. According to known engine thrust, the track of spatial movement of the aircraft is solved with the Runge-Kutta method; according to the track of spatial movement, the corresponding thrust of the engine is solved with a difference method; the two different methods can obtain the same result, i.e. the correctness of the movement model algorithm built by the invention is proved. The invention has the effect and benefits that the invention can realize the control of flexible space movement of the spinning aircraft, and has important application value in various application fields.

Description

technical field [0001] The invention belongs to the technical field of aerospace modeling and relates to a method for simulating the six-degree-of-freedom motion of a spinning aircraft, and provides two different solving methods for the model to verify the correctness of the algorithm. Background technique [0002] Spinning aircraft belongs to one of the aircraft, which is a spacecraft heavier than the same volume of air, relying on aerodynamic force to overcome its own gravity and lift off. This aircraft is disc-shaped and is an unconventional aircraft with no tail, no rudder, and fully fused wings. Conventional aircraft generally achieve flight control by adjusting the deflection of the rudder surface (airfoil) to control the aerodynamic force, while spin-type aircraft cannot use a similar method, but can combine variable mass moment control and thrust vector control to form a compound control. Then the flight control is realized by controlling the composite moment. [0...

AI Technical Summary

Problems solved by technology

Using the above two methods to study the aircraft object can reflect the motion characteristics of the aircraft to a certain extent, but with the continuous deepening of research work and the continuous improvement of the accuracy requirements of the model, these two modeling methods are far from being sufficient. To meet the requirements, a more accurate six-degree-of-freedom motion model of the aircraft must be established

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