Near space vertical launching single-channel stability augmentation control method and system

Abstract

The invention discloses a near space vertical launching single-channel stability augmentation control method and system. The method comprises the following steps: obtaining a rolling channel torque instruction and related parameters, wherein the related parameters comprise a rolling air torque, a flight pressure, an aircraft reference area, a rolling channel reference length and a design steering coefficient in a current flight state; and obtaining a differential control surface control instruction through calculation, and enabling the differential rudder to generate rolling torque by executing the differential control surface control instruction, and the aircraft flies in the target flight attitude. According to the embodiment of the invention, a pair of small differential control surfaces is added on the rolling channel of the aircraft, the stable flight effect of three channels of the aircraft is achieved only through rolling control, meanwhile, the influence of rapid change of atmospheric density in the process that the height is rapidly reduced after the aircraft is thrown in a near space is overcome, and the flight path can be adjusted in the preset flight vertical plane through a single channel, so that the requirement of a flight test for an airspace range is reduced, and the difficulty of searching and recovering an aircraft is also reduced.

Description

technical field [0001] The present application relates to the technical field of vertical launch in near space, and in particular to a method and system for single-channel stabilization control of vertical launch in near space. Background technique [0002] A flight vehicle is a device that flies in the atmosphere or in the space outside the atmosphere (space). The aircraft is launched into the air by the static buoyancy of the air or the aerodynamic force generated by the relative motion of the air. [0003] The traditional way of launching aircraft mainly includes rocket-assisted launching and aircraft-mounted aerostat-mounted launch. However, each has some defects. There will be extremely strong constraints, and when the aircraft is mounted, the airflow of the external storage will also cause severe interference to the aircraft platform. In this context, aerostat mount launch came into being. The aerostat-mounted launch is to mount the aircraft through the aerostat and...

AI Technical Summary

Problems solved by technology

[0006]However, for any aircraft, there is no possibility of three-channel all-static and stable design at the same time, and it is impossible to configure the center of gravity and the center of pressure at completely accurate positions in engineering implementation, nor It means that if there is no control intervention, any aircraft will inevitably diverge when it is put into flight. Obviously, the flight result is also very unfavorable for obtaining the aerodynamic characteristics of the aircraft configuration

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