Engine Cowl Fun
Thread Starter
Joined: Dec 2000
Posts: 82
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From: UK South Coast
Engine Cowl Fun
Hi Folks,
On all modern passenger jets there is either one or two fins on the engine cowling. They are on the 737, 747-8, 777, 787, A320 series, A330/340-5/600, A380. What are they for, how do they work and what are the advantages of having them there? What would happen if they weren't. At high angles of attack in moist weather there is a generated vortex off them over the wing. Can someone link me to a site that explains their use please?
Cheers...
On all modern passenger jets there is either one or two fins on the engine cowling. They are on the 737, 747-8, 777, 787, A320 series, A330/340-5/600, A380. What are they for, how do they work and what are the advantages of having them there? What would happen if they weren't. At high angles of attack in moist weather there is a generated vortex off them over the wing. Can someone link me to a site that explains their use please?
Cheers...
Joined: Aug 1998
Aviation Qualifications: ATPL
Posts: 6,623
Likes: 847
From: Ex-pat Aussie in the UK
Search this site for "Chines", quite a few threads about it.
Basically they are there to generate a high energy vortex at landing angle of attack to maintain flow over the wing near the engine. Typical stall speed reduction of 5 knots or so.
Edit: here you go:
http://www.pprune.org/tech-log/33944...e-cowling.html
Basically they are there to generate a high energy vortex at landing angle of attack to maintain flow over the wing near the engine. Typical stall speed reduction of 5 knots or so.
Edit: here you go:
http://www.pprune.org/tech-log/33944...e-cowling.html
