Longitudinal damage control method for hypersonic vehicle based on preset performance

Abstract

The invention discloses a method for controlling longitudinal damage of a hypersonic aircraft based on preset performance. The method includes the following steps: step 1), performing force analysis on the wing of the hypersonic aircraft; and step 2), performing damage dynamics on the entire wing Modeling; step 3), through the established damage dynamics model, the real-time damage information obtained from the damage model is used to design a longitudinal layered preset performance impairment controller. The invention can not only reduce the accumulation of damage during the flight of the aircraft, but also maintain the flight performance without damage to a large extent, and has good application effect.

Description

technical field [0001] The invention relates to a method for controlling longitudinal damage of a hypersonic aircraft based on preset performance, and belongs to the technical field of aircraft damage control. Background technique [0002] The wing is the key structure for the lift of a hypersonic vehicle (HFV). Complex aerodynamic effects such as thin shock layer, viscous interference, entropy layer, high temperature effect and low density effect make the surface of the wing generate more complex aerodynamic load distribution, threatening Flight safety, so in order to prolong the life of the aircraft, it is necessary to adopt effective control strategies to reduce the damage of the wings during normal flight. [0003] In recent years, the research on aircraft damage reduction control has achieved important results. First, some scholars proposed a scheme based on limiting the maximum load factor of the aircraft, and designed a controller called "g-limiter". This controller ...

AI Technical Summary

Problems solved by technology

However, due to the lack of dynamic modeling of the damage on the wing, the purpose of adequate damage suppression cannot be achieved when designing the controller, so the damage crack model based on crack growth such as FASTRAN-2, the continuous-time damage model is correlated with Scholars have proposed that damage models based on continuous time have been used in rocket engines, rotorcraft and fuel power stations, etc., and the designed controller has greatly improved the ability to suppress the accumulation of wing damage.

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