Aviation gas turbine engine state transition control method and device

Abstract

The invention belongs to the technical field of engine control, and particularly relates to an aviation gas turbine engine state transition control method and device. The method comprises the steps that S1, the rotating speed of a high-pressure rotor of an engine is obtained; and S2, an engine state transition mode is determined according to the rotating speed of the high-pressure rotor, if the rotating speed of the high-pressure rotor is lower than a first set value, state switching is directly carried out, otherwise, the state switching speed is determined according to the rotating speed of the high-pressure rotor, the rotating speed of a low-pressure rotor and the exhaust temperature of the engine, and state switching is carried out according to the speed. According to the invention, by designing the transition control method for the combat state and the training state, free conversion of the combat state and the training state of the engine throttle lever in the working area is not limited, and the abnormal problems of over-rotation, over-temperature and the like of the engine are avoided.

Description

technical field [0001] The application belongs to the technical field of engine control, and in particular relates to a state transition control method and device for an aviation gas turbine engine. Background technique [0002] In order to reduce the damage to the life of the engine during the normal training process of the pilots, the aircraft engine is generally designed to adopt combat and training states. Compared with the combat state, the temperature and centrifugal load in the training state are significantly lower. When combat use is required, it can be switched to the combat state to perform corresponding tasks. . In the process of switching between combat and training states, in order to ensure smooth engine control and no abnormal phenomena such as over-rotation and over-temperature, the current third-generation domestic engines and Russian-made engines restrict pilots to the state between combat and training when n2<90% Toggle, high state toggle is not allow...

AI Technical Summary

Problems solved by technology

In the process of switching between combat and training states, in order to ensure smooth engine control and no abnormal phenomena such as over-rotation and over-temperature, the current third-generation domestic engines and Russian-made engines restrict pilots to the state between combat and training when n2<90% Toggle, High State Toggle Not Allowed

The operation of the pilot is limited, and it is impossible to quickly switch to the combat state, which affects the combat effectiveness under certain conditions

[0003] At this stage, domestic engines and Russian-made engines are required to switch states when n2<90%. First, it limits the pilot’s operation and complicates the operation. Second, it increases the engine adjustment working time during the state transition process, which affects combat effectiveness.

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