NASA Duct / vent

[GPW]

We've discussed before the elimination of the Roof vent and going to something more practical ... Here's some links to the NASA duct , an very efficient , low drag air scoop .... would make a perfect vent on TD and looks COOL too !!! Check it out for yourself ...

http.//naca.larc.nasa.gov/reports/1948/naca-rm-a8a20/ http.//naca.larc.nasa.gov/reports/1948/naca-rm-a7i30/

Sorry , Gov site is being uncooperative(typical ) .... here's some commercially available for race cars
http://www.discoveryparts.com/cgi-bin/s ... ct=ducting

try this ... http://www.recumbents.com/wisil/nacaduct/naca-duct.htm

[Aussie Nomad]

Having used "NACA" ducts on race cars they would not be any good on a teardrop owing to the large amount of water they pull in with the air when it is raining.

[GPW]

Ian ... I think the idea was to use them in reverse as a vent ....

This was a different approach to the same old vent thingie'...Something that would be easy to construct (we've made em' for airplanes for years )... Look COOL , and function to ventilate the cabin without the usual pop up vent on the roof (a source of leaks here in La. ) or the old school hole with a screen ... just something different to consider...

[Aussie Nomad]

The don't draw air in reverse. You might as well leave a window open.

[EZ]

Cool as they would look, they only work when the vehicle (airplane, treardrop, race car, space shuttle) is moving.

Ed

[GPW]

Guys , don't get carried away with it's uses in the" real world" ..... I merely proposed this as a better" looking" replacement to the assorted venting techniques already used.... Vent ... to allow oxygen to enter so the occupants don't suffocate ...nothing about forcing or drawing air in .... merely a Hole !!!!! OK!!!

[PaulC]

GPW, Don't sweat the others as some only look inside the square I understand the original usage and your proposed remedy for a problem with our little sealed boxes

Cheers
Paul