On your thoughts about the objectionable nose high stall attitude we designed a wing cuff for the outer wing which worked and have since been incorporated into our design during the mid 90's. Unfortunately I am not at liberty to disclose the aircraft or tests. But if you are working with or are an engineer familiar with this method, I might shake your memory on this. JR SanFrancisco ----- Original Message ----- From: "Hennie van Rooyen [HQP]" <hennie.vanroo...@kumbaresources.com> To: "KRnet" <kr...@mylist.net> Sent: Tuesday, March 21, 2006 10:30 PM Subject: RE: KR> Wings
> > Hi Don, > > One thing to consider and I've read a lot of stuff off the net on this: > > Adding fowler flaps or any other stall reducing device on a KR will also > require a bigger elevator to keep the aircraft trimmed level under these > different situations. > > Just something to keep in mind. > > Hennie > > -----Original Message----- > From: krnet-boun...@mylist.net [mailto:krnet-boun...@mylist.net]On > Behalf Of D F Lively > Sent: Saturday, March 18, 2006 4:24 AM > To: KRNET > Subject: KR> Wings > > > KR Listees: > > I think I am going to build a 1/4 scale wing and see if I can figure > out a way to "Wind Tunnel" test it and see if leading edge fixed slots > will do anythig to lower the stall with out adverse effects. I have > been drying to find some information on what is importent in the design > but all I can find on the subgect applies only to "Slotted Flaps". I > know what LE slots do to lower the stall speed but they also give a nose > high attitude that can be objectionable and maybe worse but can fid > nothing that helps give a design with predictable results. The 1/4 > scale wing wounly be about 22-1/2 inches long with a 12 inch chord but > have know clue as to what scale effect might be. > > I guess that is why NASA has tunnel big enough to put an entire F-18 in > as I witnessed when I worked for them in '91. I am not all that > knowledgable, perhaps enough to be dangerous but willing to recognise > that 50% of smart is knowing that you are ignorant so I do make stupid > sounding statements sometimes and often ask the wrong questions. > > don > > > > _______________________________________ > Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp > to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net > please see other KRnet info at http://www.krnet.org/info.html > > ----------------------------------------------------------------------------------------- > This e-mail is confidential and is for the addressee only. > Please refer to http://www.kumbaresources.com/email-disclaimer for > important disclaimers. > ----------------------------------------------------------------------------------------- > > _______________________________________ > Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp > to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net > please see other KRnet info at http://www.krnet.org/info.html >
