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- Path: sparky!uunet!news.tek.com!vice!shauns
- From: shauns@vice.ICO.TEK.COM (Shaun Simpkins)
- Newsgroups: rec.aviation.homebuilt
- Subject: Re: Flying Wing
- Message-ID: <11231@vice.ICO.TEK.COM>
- Date: 28 Jan 93 18:42:21 GMT
- References: <C1J2BL.8q9@vcd.hp.com> <C1KpKx.CMz@spk.hp.com>
- Organization: Tektronix Inc., Beaverton, Or.
- Lines: 24
-
- > :
- > : 3) What is the general net.wisdom regarding flying wings. Must be someting
-
- Besides all the other stuff, flying wings of necessity can not generate
- very high coefficients of lift - about 1.1 to 1.2 instead of 1.8 to 2.0
- for tailed aircraft. This means that they have very high landing speeds
- for good cruise performance, or high wing area to land slow.
-
- The reason for this is that high lift coefficients are bought with a large
- camber, which generates a large turning moment - the wing wants to pitch
- down. Since the flying wing has no tail, the moment of the wing must be
- near zero. This means low camber. Indeed, flying wings tend to have
- a reflexed trailing edge.
-
- Flying wings also have very small CG ranges. Unless you're quite clever,
- this means that the pilot has to sit pretty near the quarter chord point.
- ...Lousy visibility...unless you make a HIGH wing flying wing...but then
- you've got to build a fuselage for the pilot, which defeats the purpose...
-
- --
- Shaun Simpkins
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