At 09:51 PM 3/1/2004 +0200, you wrote: >Hi guys >Can someone tell me if the area approx six inches ahead of the canopy on >centre line experiences a higher than or a lower than atmospheric >pressure.I.e is it ok to put a flush mounted vented fuel cap in that >position?
It will will depend on angle of attack, but in general, that area will be at a slightly lower pressure. If it is a vented cap, it would be a good idea to add a tube with the opening pointing into the oncoming air to gain a small amount of ram pressure. Don Reid - donreid "at" erols.com Bumpass, Va Visit my web sites at: AeroFoil, a 2-D Airfoil Design And Analysis Computer Program: http://www.eaa231.org/AeroFoil/index.htm KR2XL construction: http://users.erols.com/donreid/kr_page.htm Aviation Surplus: http://users.erols.com/donreid/Airparts.htm EAA Chapter 231: http://eaa231.org Ultralights: http://usua250.org VA EAA State Fly-in: http://vaeaa.org