Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.2 9/18/84; site psivax.UUCP Path: utzoo!watmath!clyde!bonnie!akgua!whuxlm!whuxl!houxm!vax135!cornell!uw-beaver!tektronix!hplabs!sdcrdcf!psivax!friesen From: friesen@psivax.UUCP (Stanley Friesen) Newsgroups: net.origins Subject: Re: gliding against the wind Message-ID: <812@psivax.UUCP> Date: Fri, 25-Oct-85 18:36:52 EST Article-I.D.: psivax.812 Posted: Fri Oct 25 18:36:52 1985 Date-Received: Wed, 30-Oct-85 03:46:22 EST References: <2383@mnetor.UUCP> <675@hou2g.UUCP> Reply-To: friesen@psivax.UUCP (Stanley Friesen) Organization: Pacesetter Systems Inc., Sylmar, CA Lines: 22 Summary: In article <675@hou2g.UUCP> scott@hou2g.UUCP (Colonel'K) writes: > >Ted seems to be making the assumption that gliders >cannot climb. I don't know a hell of a lot about >(for instance) hang-gliding, but I'd say climbing is >not only possible, it is common. If so, what's wrong >with a "glider" going down wind to gain speed (and >height?) AND THEN TURNING UPWIND? > To add some real evidence, I saw some vultures circling last weekend. I watched them for a few minutes and they were flying in *circles* without *ever* flapping their wings and without losing any altitude. Now, whatever else is true they *must* have been going upwind at least *part* of the time, tet they maintained altitude for a full circle without needing to so much as flutter their wings. Whatever the mechanism, it *works*, I saw it happen. -- Sarima (Stanley Friesen) UUCP: {ttidca|ihnp4|sdcrdcf|quad1|nrcvax|bellcore|logico}!psivax!friesen ARPA: ttidca!psivax!friesen@rand-unix.arpa