Aero-Engine Air Intake and Its Location Design

Abstract

The air source used for air conditioning in modern aircraft comes from the bleed air from the high-pressure compressor of the engine. As long as the engine is running, it can provide air supply and also provide cabin pressurization. The source of engine bleed air is drawn from the compressor of the turbofan engine. There are low-pressure stage bleed air and high-pressure stage bleed air at the bleed air part. In order to reduce the loss of engine power, modern airliners use two-stage bleed air. When the low-pressure stage bleed air is insufficient. It can be supplemented with high-pressure stage bleed air. At this time, the low-pressure stage has a one-way valve to prevent backflow. Aeroengine Air Inlet: An opening of an air duct or similar structure that uses the forward motion of the aircraft to collect air and direct it to the engine or ventilator. In flight, the intake port should realize the deceleration and boosting of the high-speed airflow, and convert the kinetic energy of the airflow into pressure energy. With the increase of flight speed, the pressurization effect of the intake port becomes larger and larger, and the pressurization effect of supersonic flight can greatly exceed that of the compressor. Therefore, the supersonic aircraft intake port plays an important role in improving flight performance. By analyzing the air intakes and their positions of common aero-engines, it is found that in order to enable the engine to generate greater thrust, the current air intakes and their position designs must minimize the flow rate and angle of attack of the intake air. Changing the position of the air inlet is an important method to reduce the flow rate and angle of attack. Based on the fact that there has not been a perfect solution for the air intake and its location of the aero-engine, the design of the air intake and its location has been carried out. Finally, the optimal design of the air inlet and its position is realized by SolidWorks 3D modeling software. The design results show that, in order to make the engine generate more thrust, the design of the air intake and its position is not necessarily the same as the design of the air intake and the angle of attack.