Simple and flexible undercarriage gear-up and gear-down operating mechanism
A control mechanism and landing gear technology, applied in the field of control system design, can solve the problems of difficult installation and debugging, difficult maintenance, huge system, etc., and achieve the effects of reducing aircraft cost, improving cost performance and simple operation.
Active Publication Date: 2018-05-22
R&D INST OF CHINA AVIATION IND GENERAL AIRCRAFT
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Problems solved by technology
Huge system, many equipments, complex design, difficult installation and debugging, detection and maintenance
Method used
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[0022] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.
[0023] see figure 1 , the invention patent includes 8 parts. Input hydraulic cylinder 1, piston rod A2, outer cylinder A3, bendable hydraulic pipeline 4, hydraulic oil 5, output hydraulic cylinder 6, piston rod B7, and outer cylinder B8.
[0024] In the actual design of the aircraft, the input hydraulic actuator 1 can be installed near the cockpit area of the aircraft according to the structural requirements, and the input hydraulic actuator 1 is composed of the piston rod A2 and the outer cylinder A3. The piston rod A2 can move freely in the outer cylinder A3, the piston rod A2 is connected with the cockpit pilot control rod, and the input hydraulic actuator cylinder 1 is filled with hydraulic oil 5 . When the pilot manipulates the retract / extend handle of the landing gear to "release", the operating mechanism drives the piston rod A2 ...
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The invention belongs to the field of control system design, and concretely relates to an undercarriage gear-up and gear-down operating mechanism applied to a small and light aircraft. The undercarriage gear-up and gear-down operating mechanism includes an input hydraulic actuating cylinder (1), a piston rod A (2), an outer cylinder A (3), a hydraulic oil (5), an output hydraulic actuating cylinder (6), a piston rod B (7) and an outer cylinder B (8), wherein the piston rod A (2) is connected with an aircraft operating mechanism, and the piston rod B (7) is connected with an undercarriage gear-up and gear-down connection point; a bendable hydraulic pipeline (4) makes the input hydraulic actuating (1) communicated with the input hydraulic actuating cylinder (6); and the hydraulic oil (5) circulates between the input hydraulic actuating cylinder (1) and the output hydraulic actuating cylinder (6) through the bendable hydraulic pipeline (4). The undercarriage gear-up and gear-down operating mechanism achieves two functions of gear-up / gear-down through one hydraulic oil way, so the undercarriage gear-up and gear-down operating mechanism is simple to operate, and is convenient to mount and maintain, and the reliability of the system is improved; and the cost of the aircraft is greatly reduced, and the cost performance of the small aircraft is improved.
Description
technical field [0001] The patent of the invention belongs to the field of control system design, and specifically relates to a simple, flexible and reliable aircraft control system, especially for small and light aircraft retractable landing gear control mechanism. Background technique [0002] In the design of the aircraft landing gear control system, the normal retraction / extension of the landing gear is usually driven by the aircraft engine to drive the hydraulic pump (or air pressure pump) to generate the hydraulic pressure source (or air pressure source), and the pressurized hydraulic oil (or air pressure) enters the landing gear system The actuating cylinder, the piston rod in the actuating cylinder moves to complete the retracting action of the landing gear; the retracting action of the landing gear is completed through another hydraulic pipeline and control mechanism. [0003] Such as figure 2 As shown, the landing gear retraction / extension control system mainly in...
Claims
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IPC IPC(8): B64C25/22
CPCB64C25/22Y02T50/40
Inventor 郭炳斌教丽敏孔德拴成强许明轩章建华陈振兴
Owner R&D INST OF CHINA AVIATION IND GENERAL AIRCRAFT