Quote:
Originally Posted by drrbc
Once upon a time in the massive number of clicks across the web…
I recall going stumbling upon a diagram of a dirigible (IIRC) in whose tail fins were inflated by a ram air type opening- so more of a parachute than balloon.
The obvious problem being the induced drag of the opening versus the reduction benefit of such a mechanism.
Materials wise it doesn't seem (on the surface at least) much more difficult than a little plastic, parachute type nylon, and a needle and thread.
Anyone seen similar or heard of such?
|
Obviously exhaust is dangerous. Just saying...BUT, what if the boat tail ran off exhaust, until reaching full size where it would "lock" or "snap" into form- and then the exhaust could come out of a flap in the back, or whatever. Or, design it so the pressure needed to fully inflate is X, and the pressure to release from exhaust/switch to going to rear wake is X+5 (PSI?). Then when you get to the destination, bend the joints back, and let it fold into place. Obviously letting the car idle to inflate would be a poor idea, but if it could be unfolded length wise while driving, or before hand (cities with tailgater's), then it would probably work. I would guess this is more trouble than worth for commercializing, but seems like a reasonable project for some of our more advanced members.
(CRX donkey? I think that's his handle. The one with the BMW tornado bead seats.)