Folks A friend of mine designed his own AoA indicator. Simply a 1/2" tube, sealed at the end with row of small holes drilled into it. The tube is mounted out of the fuselage wall on the extended chord line 8"or so ahead of the leading edge root and is parallel to it. He has the holes pointed down at right angles to the chord so that at zero AoA there is minimal pressure in the tube. As the wing/fuselage is rotated to provide an AoA so too does the tube, the holes present to the air flow and the pressure increases. A reading is obtained on some sort of sensitive pressure gauge (maybe just a low speed ASI) that has it's face recalibrated in arbitary units (he just uses numbers 1 to 5 and has the dial named " partner's pressure level"). The tube can be rotated to provide calibration (or desired absolute needle movement) and the readings noted as he approaches the stall. He flies this gauge on approach, more so than the ASI.
John The Martindale Family 29 Jane Circuit TOORMINA NSW 2452 AUSTRALIA phone: 61 2 66584767 email: johnj...@chc.net.au ----- Original Message ----- From: "larry severson" <lar...@socal.rr.com> To: "KRnet" <kr...@mylist.net> Sent: Wednesday, March 10, 2004 3:12 AM Subject: Re: KR>Dynon clarification > > >The only function you will not be able to use without adding an option is > >the Angle of Attack. The unit will provide all other functions with the > >expenditure of $1995 using the standard power supply in your airplane and > >the existing pitot/static system. If you have no use for the AOA, just > >use whatcha got. > > Forgive me, but the AOA is the most important feature that they add in not > only my opinion but also in a number of books on stalls, spins, landing and > small a/c crashes. > > > Larry Severson > Fountain Valley, CA 92708 > (714) 968-9852 > lar...@socal.rr.com > > > _______________________________________ > to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net > please see other KRnet info at http://www.krnet.org/info.html >
