Equilibrium glide guidance force distribution method in angle-of-attack constraint

Abstract

The invention discloses an equilibrium glide guidance force distribution method in angle-of-attack constraint. The method comprises steps of: determining the normal force coefficient of an aircraft; computing the value of longitudinal force Fycx according to a preset longitudinal height control law; computing the normal force Fmin that can be provided by a minimum amplitude-limiting angle of attack; and determining the guidance force Fzc of a transverse channel according to the Fycx and the Fmin. The method provided by the invention may decompose redundant normal force into the transverse channel while satisfying the angle-of-attack constraint so as to coordinate longitudinal guidance force distribution with transverse guidance force distribution.

Description

technical field [0001] The invention relates to the technical field of aircraft guidance, in particular to a method for distributing a balanced gliding guidance force under an angle of attack constraint. Background technique [0002] For lift aircraft, due to the large lift coefficient and high speed, the centrifugal force added by the speed is large, so the projectile only needs a small angle of attack to achieve balanced gliding flight, and due to the problem of controllability, the aircraft often has a minimum angle of attack α min limit. [0003] Even if the aircraft flies at the minimum angle of attack, the lift it provides is far greater than the force required for balanced gliding guidance, so there is a contradiction between the minimum angle of attack limit and the longitudinal force requirement. Contents of the invention [0004] In view of this, the present invention provides a balanced gliding guidance force distribution method under the constraint of the angl...

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Problems solved by technology

[0003] Even if the aircraft flies at the minimum angle of attack, the lift it provides is far greater than the force required for balanced gliding guidance, so there is a contradiction between the minimum angle of attack limit and the longitudinal force requirement

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