Aircraft S bend and embedded type combination air inlet channel

Abstract

The invention aims to provide an aircraft S bend and embedded type combination air inlet channel. The combination air inlet channel comprises an actuating device, a sealing gasket, an air inlet channel jettison section, a breakable connecting device, an embedded type air inlet channel, an engine and an aircraft body. The air inlet channel jettison section is fixed on the outer portion of the aircraft body through the actuating device and the breakable connecting device and is in sealed butt joint combination with the embedded type air inlet channel through the sealing gasket on an air inlet channel jettison section flange to form an S bend air inlet channel. At a small flow starting period and a cruising period, an aircraft supplies gas to the engine through the S bend air inlet channel formed by combining the air inlet channel jettison section and the embedded type air inlet channel. When the aircraft is at a penetration period, the air inlet channel jettison section is discarded, and gas is supplied to the engine through the embedded type air inlet channel. The aircraft S bend and embedded type combination air inlet channel is simple in structure and convenient to use and has the advantages that the air inlet channel is good in reliability at the small flow starting period, high in total pressure recovery coefficient at the cruising period, good in stealth capability at the penetration period and high in battlefield survivability.

Description

technical field [0001] The invention relates to the field of aircraft air intake design, in particular to an aircraft S-bend and embedded combined air intake. Background technique [0002] The basic function of the air intake is to capture the air flow upstream of the aircraft to decelerate and diffuse it, to provide air that meets the needs for the normal operation of the engine, and to act as a connection hub between the aircraft and the engine. With the development of anti-aircraft weapons and radar detection methods, subsonic aircraft generally use buried air inlets to reduce the radar scattering area of ​​the aircraft and enhance its stealth capability and battlefield survivability. However, while the embedded air intake enhances the stealth ability of the aircraft, its air intake efficiency and total pressure recovery coefficient are low, and the air flow distortion at the air intake exit is large, sacrificing the engine thrust and working reliability, especially in th...

AI Technical Summary

Problems solved by technology

[0003] Purpose of the invention: In order to solve the problem that the current S-curved inlet has poor stealth effect, but has good starting performance at small flow rate and high total pressure recovery coefficient, and the buried inlet has good stealth performance but poor starting performance at small flow rate, and relatively low total pressure recovery coefficient. Lower problem, the present invention provides a kind of aircraft S bend and buried type combined air inlet

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