I think that venting static inside the aircraft will create error depending on flight conditions. My recollection is that the pressure will read lower, but I could be wrong on that... it's been some time since I was looking at that.
Some aircraft have alternate static ports for IFR flight, that I believe are vented to the cabin in case the primary static port ices over. I'm not sure how severe the indication error would be due to this error... somthing that would be reasonably easy to check would be to put a valve on your static system to select internal/external and see what the indications read. Most performance stuff I read about uses a probe that trails behind the aircraft to get accurate static readings for engineering work. I don't know how often these probes are used, nor what the error is, and the usage of these probes might be restricted to sailplane design where drag & L/D figures are important enough to measure accurately. -- Ross On Mon, 12 Apr 2004 22:22:50 -0500, Mark Jones <flyk...@wi.rr.com> wrote: > Why could we not just terminate the static lines within the fuselage. > This > would have the static port completely out of the slipstream and in no > high > or low pressure area. These planes are not airtight enough to create > either > a high or low pressure inside the fuselage. ?????????? Just > thoughts...all > comments welcome. > > Mark Jones (N886MJ) > Wales, WI USA > E-mail me at flyk...@wi.rr.com > Visit my KR-2S CorvAIRCRAFT web site at > http://mywebpage.netscape.com/n886mj/homepage.html > > > ----- Original Message ----- > From: "larry flesner" <fles...@midwest.net> > To: "KRnet" <kr...@mylist.net> > Sent: Monday, April 12, 2004 10:15 PM > Subject: KR> 2 pitot questions > > >> >> >My second observation was that the static port is located on the >> fuselage >> >side behind the pilot. Has anyone used this location for the static >> port? > My >> >thoughts are that this would be a low pressure area??? >> >Dene Collett >> +++++++++++++++++++++++++++++++++++++++++++++++++++++ >> >> In this case, there should be one on each side to equalize the pressure. >> Daniel R. Heath - Columbia, SC >> ++++++++++++++++++++++++++++++++++++++++++++++++++++++ >> >> If you have a static port on one side of the fuselage and it is >> located in a low pressure area I doubt if locating a second >> port on the opposit side in a low pressure is going to give >> you a good static source. The objective is to find a location >> that is neither high or low pressure, hence the term "static" >> pressure. >> >> Larry Flesner >> >> >> >> >> >> _______________________________________ >> to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net >> please see other KRnet info at http://www.krnet.org/info.html >> > > > > _______________________________________ > to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net > please see other KRnet info at http://www.krnet.org/info.html -- Using M2, Opera's revolutionary e-mail client: http://www.opera.com/m2/
