yourtcfg(at)aol.com
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 Posted: Sat Jan 19, 2013 8:15 am Post subject: Commander-List: Non-Commander Question: Biplanes |
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You are correct, the stagger is to help negate the interferance of the wings. It also helps extend the wing cg by avereging the the center of lift over both wigs. The antinov wings are probably far enough apart that they bony effect wash other. Don't know about the ch? Jb
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----- Reply message -----
From: "Andrew & Bridget Watson" <andrew.bridget(at)telus.net>
To: <commander-list(at)matronics.com>
Subject: Commander-List: Non-Commander Question: Biplanes
Date: Fri, Jan 18, 2013 9:14 am
Non-Commander Question: Biplanes
Hello everybody,
Forgive me bringing a biplane aerodynamics question to the Commander forum but hopefully somebody can answer this.
I was always under the impression that a biplane’s wings were staggered wither negatively (as in the Beech Staggerwing) or positively (e.g. Tiger Moth) so the bottom and top wings do not interfere with each other, so negating some lift. However, looking at a picture of the Antonov An2/An3 Colt, there is no noticeable stagger. Does the stagger negate lift conflict? Or was I wrong in my thinking?
I do understand that the stagger changes the centre of lift on the wings, that it improves stability, and so on, but do unstaggered wings interfere, even to a slight degree, with lift generation?
Thanks in advance.
Andrew
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