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Understanding low drag engine intake / cowling design

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Battson

Well-Known Member
Joined
Jan 30, 2012
Messages
610
Location
New Zealand
Can anyone lay some widsom on me, or point me to some online literature, which explains the theory behind good cowling design for low drag air intake for the engine and low drag cooling / air extraction through the engine and out the exhaust tunnel?

I need to design a filtered air intake for a fuel injected Lycoming 540, and I can't find any examples or explaination of what's good and what's bad design.

I understand the basics like creating a baffled plenum for passing air over the engine, its the details of low drag vs. high drag air intakes / filter locations etc. which are baffling me!! :gig:
 
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