Protective device for turbofan engine

Abstract

The invention provides a protection device of a turbofan engine. The protection device comprises an air inlet pipe arranged in an air entraining grid and a middle shaft pipeline arranged in a low-pressure air compressor and a fan; an adapter which is respectively communicated with the air outlet of the air inlet pipe and the middle shaft pipeline; the other end of the air injection pipe is provided with an air injection port. In the protection device of a turbofan engine, an air inlet pipe is arranged on an air entraining grid; the air enters the air injection pipe through the middle shaft pipeline arranged on the low-pressure air compressor and the fan and is injected out from the air injection port in the front end of the air injection pipe towards the fan, and due to the fact that the air injection pipe rotates along with the fan, airflow injected out from the air injection port forms an air hood on the outer side of the air suction port of the engine to prevent foreign matter frombeing sucked in.

Description

technical field [0001] The invention relates to the technical field of aircraft engines, in particular to a protection device for a turbofan engine. Background technique [0002] The world's air passenger traffic is increasing year by year, and the number of new passenger planes purchased by airline companies is also increasing, followed by a substantial increase in the number of aircraft engine inhalation incidents. The maintenance cost will cause at least millions of yuan in losses and delay the travel of passengers or even cause casualties, especially when birds pass near the engine air intake, they are easy to be sucked in, because birds are generally small in size and relatively high speed relative to the aircraft , it cannot be detected with the accuracy of the existing airborne radar, and the visual reaction time left for the pilot is extremely short, so it is difficult to avoid the flying bird, and the flying bird enters the engine, causing damage to the engine. Co...

AI Technical Summary

Problems solved by technology

[0002] The world's air passenger traffic is increasing year by year, and the number of new passenger planes purchased by airline companies is also increasing, followed by a substantial increase in the number of aircraft engine inhalation incidents. The maintenance cost will cause at least millions of yuan in losses and delay the travel of passengers or even cause casualties, especially when birds pass near the engine air intake, they are easy to be sucked in, because birds are generally small in size and relatively high speed relative to the aircraft , it cannot be detected with the accuracy of the existing airborne radar, and the visual reaction time left for the pilot is extremely short, so it is difficult to avoid the flying birds, and the flying birds enter the engine, causing damage to the engine

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