A half-cycle acceleration inspection method for aero-engine

Abstract

The invention belongs to the field of aero-engine testing, and in particular relates to an aero-engine half-cycle acceleration inspection method. The technical scheme of the present invention is as follows: a method for half-cycle acceleration inspection of an aero-engine, which uses fuel flow testing equipment to detect the aero-engine, calculates and interpolates the test data to obtain the transient fuel-gas ratio, and adjusts the transient fuel-gas ratio Increment, to measure the surge margin of the aero-engine, and to judge that the aero-engine is an accessory quality problem or the accessory and the main engine are not well matched. By adjusting or replacing the accessory, the stability margin during the acceleration process of the aero-engine can be improved. The inspection method for the half-cycle acceleration of the aeroengine provided by the invention can effectively evaluate and adjust the oil-gas matching situation in the engine acceleration process, and adjust in real time to ensure a stable working margin in the engine acceleration process.

Description

technical field [0001] The invention belongs to the field of aero-engine testing, and in particular relates to a half-range acceleration inspection method for an aero-engine. Background technique [0002] The speed of acceleration of aero-engine is the embodiment of the maneuverability of this type of engine. In the design of aero-engines, in order to ensure the maneuverability of the engine, the acceleration process of the engine is controlled to ensure the follow-up of the speed and thrust after the throttle lever reaches the position. During the field use of aero-engines, surge faults during acceleration frequently occur, and the engine acceleration process reduces the engine stability margin. When the aircraft is flying, especially when maneuvering, the overall engine margin is reduced. If the acceleration process is performed at this time, the engine margin may be reduced. Surge occurs due to insufficient power, and it is suspected that there are deviations in producti...

AI Technical Summary

Problems solved by technology

During the field use of aero-engines, surge failures frequently occur during the acceleration process. The engine acceleration process reduces the engine stability margin. When the aircraft is flying, especially during maneuvers, the overall engine margin is reduced. If the acceleration process is carried out at this time, the engine margin may be reduced. Surge occurs due to insufficient engine speed. It is suspected that there is a deviation in production quality and the mismatch of the main engine of the accessory leads to a low margin of some engines.

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