Thread Tools
This thread is privately moderated by phil alvirez, who may elect to delete unwanted replies.
Apr 12, 2013, 02:50 PM
Registered User
Thread OP
Idea

on shape of wings of sailplanes


at the beginning, sailplanes flew from slopes, like at elmira, new york, where an upward draft kept them airborne. no need to go anywhere, just stay into the upward wind. like the planes at slopes do, so a shorter wing was better for smaller diameter turns.
then they began to get into thermals, and as they gained altitude could go somewhere else and get into another thermal. so distance was the goal, and then wings began to get longer and thinner-the trend that we see today. but models that copy the shape of full size narrow wings find themselves into trouble, as they tip stall easily. the problem is due to the air density, that makes the smaller wings less efficient the smaller they get (that Reynolds number thing).
and if we look at birds, sure those that stay around, like buzzards, haws, and eagles, have short wings, and those who go places, like albatross, have long, narrow wings. and the chord of all is almost the same all through the wing. no taper nothing. just the tips. so they may know better, after millions of years of evolution. and they use turbulators too. just think about it.
Sign up now
to remove ads between posts


Quick Reply
Message:
Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Sold Rare - Klingberg Wing 6' 6" wing NIB Future Flight. Glider / Sailplane sst2000 Aircraft - Sailplanes (FS/W) 3 Feb 17, 2013 02:23 PM
Help! CG on delta shape wing netsurfer Pusher Prop Jet Models 3 Dec 02, 2012 04:42 PM
Careful! Wing tip shapes on PSS Chief High Horse Slope 11 Jan 08, 2008 10:57 AM
Discussion Wing shape/outline/planform effect on turn energy THUREN Multi Task F3X 13 Dec 14, 2007 04:10 PM
Shape of wing tip on 2M Spirit jmendes Sailplane Talk 12 Jul 30, 2004 08:34 PM