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Splitter plate (aeronautics)

Engine intake air diverter

Splitter plate forming a lip on the underside of a [[Eurofighter Typhoon

A splitter plate is a component in some jet aircraft, used to control the airflow into the engine. Where the engine air intake is mounted partway back along the fuselage or under the wing, the splitter plate diverts the boundary layer away from the engine intake. It is a form of boundary layer control.

Diverting the boundary layer

When a body, such as a wing or a fuselage, passes through a fluid such as the air, a boundary layer of fluid attaches to the body and moves along with it. This boundary layer is turbulent and if it enters the air intake of a jet engine which requires clean and uniform airflow, it can cause distortion and affect performance.

In order to stop this boundary layer problem from happening, a splitter plate may be used to separate the boundary layer from the fast-moving free airflow and divert it away from the engine intake.

Many splitter plates have a series of holes drilled into the surface closer to the engine side of the intake. Suction is applied to these holes, further reducing the boundary layer.

Airplanes

General Dynamics F-16 Fighting Falcon
HAL Tejas
Saab JAS 39 Gripen
Eurofighter Typhoon
Chengdu J-10A
McDonnell Douglas F-4 Phantom II
North American XB-70 Valkyrie
Avro Canada CF-105 Arrow
Mikoyan-Gurevich MiG-23
Mikoyan Project 1.44
Sukhoi Su-15
Shenyang J-8B Finback

References

(2018-05-18). "The YF-23's Air Inlet Design Was Its Most Exotic Feature You Never Heard Of". Recurrent Ventures.

Info: Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

aircraft-propulsion-components

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