Third-generation heavy fighter novel gas inlet channel lip

Abstract

The invention discloses a third-generation heavy fighter novel gas inlet channel lip. The novel gas inlet channel lip comprises a gas inlet channel lip and a boundary layer separation plate, the fixed gas inlet channel lip of a present heavy fighter is changed to a retractable movable lip, the retractable movable lip is arranged on two sides of the front portion of the boundary layer separation plate through a hinge shaft, a movable lip folding and unfolding hydraulic actuation cylinder on a mounting joint on the inside wall of the air inlet channel is connected with a folding and unfolding pull rod on the rear portion of the inner end of the movable lip through a connection bolt to realize the folding and the unfolding of the movable lip, a fixed lip having a radius larger than the radius of the movable lip is arranged on the rear portion of the movable lip, and a rectification box having a leading edge radius same with the radius of the movable lip is arranged outside the hinge shaft, and enables the third-generation heavy fighter to have relatively large engine push force on a relatively short running track such as when the third-generation heavy fighter launches on an aircraft carrier or flights in a low-altitude and low-speed manner, and to correspondingly increase the launching weight, the fighting capability and the use flexibility of the fighter.

Description

Technical field: [0001] The invention relates to a military aviation device, in particular to a new air intake lip of the third-generation heavy-duty fighter that can significantly increase the engine thrust of the third-generation heavy-duty fighter when it takes off and flies at low altitude and low speed. Background technique: [0002] The air inlet lip of the existing third-generation heavy-duty fighter is fixed. In order to make the third-generation heavy-duty fighter have a flight speed of more than two Machs, a tapered air inlet lip with a smaller lip radius is adopted. Due to the small lip radius of the inlet lip, the shock wave resistance can be greatly reduced when flying at a high speed above Mach 2. When the fighter plane is flying at normal or high speed, it only needs to inhale the air directly in front of the air intake or a smaller amount of air to meet the needs of the engine. It is the air at the rear to meet the engine's air needs and maximize the engine'...

AI Technical Summary

Problems solved by technology

If the aircraft carrier takes off with no external force, it will not be able to extend the run distance due to the small engine thrust, so it can only take off with a relatively small take-off weight, which obviously affects the combat effectiveness of fighter jets. Therefore, the existing third The air inlet lip of the modern heavy fighter makes the fighter have great limitations in use under certain circumstances

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