I used to own an Ercoupe, it is a GREAT airplane. Lots of fun to fly. The combination mixing the ailerons and rudders with washout and limited elevator throw yielded an airplane that did stall or spin. You could get it into a deep mush condition if you were in ground effect. This was bad as it caused the aircraft to sort of drift sideways, causing people to panic and crash. The correction was very easy but completely unnatural, forward stick! And voila flying in control again! I did an extensive flight test with one in the mid 80s and was never able to fully stall of spin the plane. Despite the very large ailerons, performing rolls was slow but it did loop very well! In the vertical it just flops over and starts to recover as speed builds up. Part of these flying characteristics, are a result of the extreme differential in the ailerons and the rudders.
Wayne -----Original Message----- From: KRnet [mailto:krnet-bounces at list.krnet.org] On Behalf Of Larry&Sallie Flesner Sent: January-29-14 7:08 AM To: KRnet Subject: Re: KR> Cowling, altitudes, stall spin At 06:11 AM 1/29/2014, you wrote: >On the stall spin note... There are airplanes with different flying >characteristics.... I tend to agree with the other rwriter's statement >about please use the rudder For stall recovery. I would hate to see >someone who has an airplane with conventional flight characteristics >try to recover using aileron only in a stall as in most cases that is >an invitation for at the very least an unfortunate incident! > Doran ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ I think what you mean to say is "use rudder to keep wings level in the approach to a stall", not "use rudder for stall recovery". Stall recovery is release back pressure, add power. Rudder is used in spin recovery to stop rotation. In the case of my KR, and I suspect others built with the same alignment, using rudder input to keep wings level does not work. You have to fly the airplane depending on how it responses to control input. They give us a test period to determine such things. My KR has the 3 1/2 degree washout in the wing, as called for in the plans, and stalls from inboard to outboard where the nose drops with the outer wing (ailerons) still effective. Using rudder at that point (in my KR) to lift a wing only aggravates the situation. It causes the nose to tuck down. Other KR's may fly / respond totally different, depending on their alignment / setup. Also, in my KR, the stall break is not sharp and it does not tend to drop a wing, just drop the nose and fly straight ahead with the release of back pressure. We are all taught in flight training to use rudder to keep wings level in slow flight / stall. How is that done in a "two control" Ercoupe ? :-) Larry Flesner _______________________________________________ Search the KRnet Archives at http://tugantek.com/archmailv2-kr/search. To UNsubscribe from KRnet, send a message to KRnet-leave at list.krnet.org please see other KRnet info at http://www.krnet.org/info.html see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change options
