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Steering column trimming system of aircraft

A technology of trim system and steering stick, applied in the aviation field, can solve the problems of incapable of automatic flight control system cross-linking, too many mechanical system parts, disadvantageous system accuracy guarantee, etc. The effect of reducing complexity

Active Publication Date: 2016-12-07
SHAANXI AIRCRAFT CORPORATION
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AI Technical Summary

Problems solved by technology

However, because the traditional elevator trim control system is a mechanical system, it has limitations in use. The main disadvantages are: ①The design of the system transmission line is complex, the transmission line is long, and there are many intermediate installation and adjustment links, which is not conducive to the guarantee of system accuracy; ② The mechanical system has many parts and heavy weight; ③The control parts are mechanical parts, which is inconvenient to operate; ④There is no trim angle display, which cannot provide the pilot with a direct trim display; ⑤Cannot be cross-linked with the automatic flight control system to realize the automatic trim function

Method used

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  • Steering column trimming system of aircraft

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Embodiment Construction

[0015] An aircraft cockpit trim system replaces the mechanical control system with an electrical control system. The pilot's control part is changed from a mechanical hand wheel to a trim switch. The electric signal is used between the pilot's control switch and the trim steering gear, eliminating the need for redundant mechanical control mechanisms and transmission parts. The components are simple, reliable, and light in weight. The system adds an automatic trim function to improve the safety of the automatic flight control system. The system design principles are as follows:

[0016] 1 Manual trim function

[0017] When manually manipulating the aircraft to fly, the driver controls the deflection of the elevator 25 through the steering stick 1 to change the pitching attitude of the aircraft, and the deflected elevator 25 acts on aerodynamic force, which generates a moment relative to the rotating shaft (hinge) of the rudder surface. In order to keep the elevator 25 in a def...

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Abstract

The invention discloses a steering column trimming system of an aircraft. The steering column trimming system comprises trimming switches, force sensors, a preamplifier, a trimming amplifier, a trimming steering engine and the like. The steering column trimming system has the advantages that the traditional mechanically transmitted instructions are replaced by telex signals, and the steering column trimming system is in cross-linkage with an automatic pilot system and has an automatic trimming function and an additional function of displaying trimming angles for pilots; the steering column trimming system is simple and reliable and is convenient to operate.

Description

technical field [0001] The invention belongs to the technical field of aviation, and relates to an aircraft control stick trimming system, specifically, realizes the manual and automatic trimming functions of the aircraft control stick force, and is mainly used in large and medium-sized transport aircraft and civil aircraft. Background technique [0002] In the aircraft mechanical control system, in order to reduce or eliminate the control force on the control stick when the pilot manipulates the control stick to control the deflection of the elevator, it is generally realized by controlling the deflection of the elevator trim piece. However, because the traditional elevator trim control system is a mechanical system, it has limitations in use. The main disadvantages are: ①The design of the system transmission line is complex, the transmission line is long, and there are many intermediate installation and adjustment links, which is not conducive to the guarantee of system acc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64C9/30
Inventor 冯书君杨曦何巧云王卫东陈立慧曾虹峰周蕊畅爱东回小晶周中盼贾自立陈海龙谷计划张汉平申晓玲
Owner SHAANXI AIRCRAFT CORPORATION
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