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A method for automatic trimming of aircraft elevator trim

A technology of elevators and trims, applied in aircraft parts, aircraft control, transportation and packaging, etc., can solve problems such as imperfect methods and no continuous improvement, and achieve the effects of easy access, trimming, and avoiding aircraft overload

Active Publication Date: 2018-07-24
SHAANXI AIRCRAFT CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

③When the automatic flight control system is working, the small-scale automatic adjustment deflection of the elevator trim is introduced. The deflection angle of the trim is simply proportional to the deflection angle of the elevator, and the influence of this phenomenon is weakened. This method is not perfect. The development of the flight control system has not continued to improve

Method used

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  • A method for automatic trimming of aircraft elevator trim
  • A method for automatic trimming of aircraft elevator trim
  • A method for automatic trimming of aircraft elevator trim

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Embodiment Construction

[0027] During the working period of the automatic flight control system, according to its various functional requirements, the elevator steering gear controls the deflection of the elevator, and the elevator trim piece needs to be automatically trimmed (deflected), and the elevator hinge torque is immediately removed. When the automatic flight control system elevator servo is disconnected, The force transmitted to the control stick through the manual control system is zero, so that after the automatic flight control system of the manned aircraft is disconnected, the elevator surface will not move suddenly, avoiding the overload of the aircraft and large changes in attitude, which is convenient for manual driving. access.

[0028] 1 Design of the automatic trim threshold of the elevator trim

[0029] Referring to the "China Civil Aviation Regulations", the pitch control force of the disc control system, and the lasting control force is 5 kgf. Combined with calculation and anal...

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Abstract

The invention discloses an automatic balancing technology of an aircraft elevator trimmer. A reversible manual flight control system aircraft is understood through doing researches on the automatic balancing technology of elevator trimmers of a certain type of aircrafts, the best balancing effect of the force of a joystick is achieved within all the scopes employing the indicated airspeed of an automatic flight control system, the situation that an elevator surface and the joystick cannot conduct sudden movements after the automatic flight control system is disconnected is solved, the condition that the aircraft is overloaded and the posture is greatly changed is avoided, and manned piloting is smoothly switched.

Description

technical field [0001] The invention belongs to the technical field of automatic flight control of manned aircraft. Background technique [0002] For a certain type of aircraft, the flight control system includes a manual flight control system and an automatic flight control system. The lift passage of the manual flight control system has a hydraulic return booster, and the lift actuator of the automatic flight control system is connected in parallel with the lift passage of the manual flight control system. See the attached block diagram for the composition figure 1 . [0003] When the automatic flight control system controls the flight of the aircraft, the elevator servo controls the hydraulic return booster of the elevator to drive the deflection of the aircraft elevator surface, and at the same time drives the elevator channel control system of the manual flight control system to follow; the aerodynamic force on the elevator surface is borne by the force of the elevator...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B64C9/00
Inventor 回小晶曾虹峰冯书君赵伟国柯松陈立慧何巧云王卫东周中盼贾自立谷计划袁志敏杨曦朱永岗
Owner SHAANXI AIRCRAFT CORPORATION
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