Barry: Just foggy thinking on my part! Of course the stall speed would go up as it would loose lift sooner therefore at a higher speed. They may be a usefule cure for the tendency to float that some have been talking about recently but would be willing to bet that the FAA folks might frown on them on an LSA because of added complexity. Improperly used could be a hazzard.
Don ------------------------------------------------------------------------ Barry Kruyssen wrote: > Don > > I think you may have miss read the specs below, clean stall with power off > is 38 and with spoilers the stall speed increases to 45. > > 38 complies, I think, how you bleed the speed off is a non issue (spoilers, > flaps or belly board) as you can retact them to get the stall speed down if > required (flaps would reduce the stall speed even more). > > Regards > Barry Kruyssen > Cairns, Australia > k...@bigpond.com > http://www.users.bigpond.com/kr2/kr2.htm > > -----Original Message----- > From: krnet-boun...@mylist.net [mailto:krnet-boun...@mylist.net] On Behalf > Of D F Lively > Sent: Wednesday, 3 May 2006 8:48 AM > To: KRnet > Subject: Re: KR> LSA KR > > Ron: > > I do not think spoilers results count because LSA stipulates stipulates > "CLEAN" > which means that the deployment of lift destroying devices or any device > that alters the wing geometry is unacceptable to meet the requirement. > That is why I looked at L.E. Slots/Slats but could not find anything of a > design nature that did not require extensive wind tunnel testing that would > yield predictable results. > Other conversations of late has pointed up how slippery the KR2 is when > comes to bleeding off speed during landing. > > Don > ------------------------------------------------------------------------ > > Ron Butterfield wrote: > > > At 03:56 PM 5/2/06, VIRGIL N SALISBURY wrote: > > > How about the KR-1b, Virg > > > > Ran the numbers, 45hp stock 1600, 800lb, 91sf, Airfoil is funny; > > center is RAF48 (CL 1.42), outer wings start as > > GAW(2) (CL 2.04) tapering to GAW(1) at tip (CL 1.8). Rough average CL of > 1.76 > > Stall 44 Top speed 130 > > > > Specs from Nov 79 newsletter: > > Length 12'10" > > Span 27' > > Empty 484 > > Gross 800 > > Engine VW1834 > > Cruise 125@3200rpm > > Stall 38 power off > > Stall 45 w/spoilers > > Glide 21.12:1 > > > > Maybe not good enough to qualify as a "real" motorglider, but perfect for > LSA. > > > > Regards, > > RonB > > > > _______________________________________ > 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
