A Method for Troubleshooting Aircraft Idle Parking Faults

Abstract

The present invention introduces a method for getting rid of the slow car parking fault of the aircraft, solves the slow car parking fault of the Cirrus SR20 aircraft, performs the performance screening of the main pump of the engine, and determines the replacement according to the stability of the slow car working point; in order to reduce the influence of the auxiliary pump on the main pump, Optimizing the best reference operating point of the engine under normal idle conditions; for real-time control of engine performance, comprehensive performance monitoring and inspection of the aircraft-engine fuel system during operation; setting an unloading hole at the bottom of the damping chamber to reduce the damping for main use Pump idle valve stability performance optimization. The invention can conveniently monitor the deviation of the reference working point of the main pump, and control the performance of the engine in real time; the parameters are set according to the evidence, and the replacement of parts is targeted; after the unloading hole is set, all the main pumps that have been eliminated can pass through With the secondary screening, the expensive main pump is utilized, which further improves the economy while ensuring reliability.

Description

technical field [0001] The invention relates to an aircraft maintenance technology, in particular to a method for eliminating the failure of an aircraft's idle parking, and more particularly to a method for eliminating the idle parking failure of a Cirrus SR20 aircraft. Background technique [0002] The SR20 aircraft produced by Cirrus Design Company in the United States is known as the "BMW in the Air". It adopts the whole machine composite material structure and is equipped with a whole machine parachute system. It has excellent flight quality and high safety. With a wide range of applications, Cirrus' SR series aircraft have more than 6,000 aircraft in the world. [0003] The Cirrus SR20 aircraft is equipped with the IO-360-ES aviation piston engine produced by the American TCM Company. During operation, the engine ground idle parking failure often occurs, especially the engine parking occurs many times during the process of leaving the runway after the aircraft has lande...

AI Technical Summary

Problems solved by technology

Idle parking is an inherent failure of Cirrus SR20 aircraft. Although the number of Cirrus SR series aircraft in the world has exceeded 6,000, this problem has not been effectively solved for many years; TCM, as a global aviation piston engine manufacturing company, its The product is not uniquely used on Cirrus SR series aircraft, and mostly uses engine fuel injection systems with similar principles, but TCM has not revealed the mechanism of frequent idle stop failures during engine operation

Due to the unknown cause of the failure, frequent engine slow-down failures in operation practice have brought huge psychological pressure to the pilots, and maintenance technicians can only replace a large number of related components of the fuel system on the failed engine, which has brought huge manpower and material resources. loss, but also bring greater flight safety risks

However, the failure mechanism is not clear, and it is difficult to carry out risk assessment on the probability of engine parking in the air. Based on safety considerations, the airworthiness supervision department of the government suspended its SR20 fleet in response to the frequent engine ground slow parking of the SR20 fleet of an aviation operation unit. operation until effective measures are taken

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