I am not saying it is true or false. I am just asking if anyone has heard of this or has any documentation on it. If anyone has a detail drawing of the belly that shows the stringers I would like to see it.
Kevin1 --- In [email protected], William R. Bayne <ercog...@...> wrote: > > > > Ok Kevin, > > I've heard it (now). ;<) > > Let's re-pose the question: > > Does anyone with credibility beyond having human shape possess or > have access to the slightest "evidence" that: > > 1. Early Ercoupe belly skins flutter (audible oil canning) at minimum > speed > with full back elevator (the proverbial "full stall" landing, or as > close as one > can get in a coupe...would have no meaningful use in a "whip stall")? > > 2. Belly skin stiffeners were added to prevent the above, as opposed to > preventing the possibility of skin failure from "oil canning" in other > modes of > flight? > > 3. An airframe identifiable by N# or Serial # with unreinforced belly > skins > can demonstrate the suggested "effect"? > > 4. Fred Weick ever suggested such an intentional hypothesis? > > The Ercoupe DOES NOT STALL (in the normal sense) therefore the whole > idea is preposterous! Of what possible use is a "stall warning device" > in an > aircraft design incapable of the traditional stall? > > In flight with full back elevator and minimum power (the RAPID DESCENT > mode some believe the dark side of coupe behavior), the only sound is > teeth chattering or knees knocking of passengers unacquainted with this > part of the flight envelope. > > The pilot IS obligated to convert much of the impressive rate of > possible > vertical descent (that's not a bug, that's a feature!) to forward motion > WITHOUT AUDIBLE WARNING before ground contact otherwise the > "arrival" may force the wheels up through the wings, the control column > up > through the fuselage tank and result in spinal compression damage. > > I found this ability to lose excess altitude with complete control > without flaps > or slips impressive and useful. Entry into and exit from it this "mode > of flight" > are as simple and predictable as "normal" climb and "Normal"descent once > the technique is learned and the skill maintained. > > Best regards, > > William R. Bayne > .____|-(o)-|____. > (Copyright 2009) > > -- > > On Jan 13, 2009, at 14:50, kgassert wrote: > > > Has anyone heard that the belly of the Ercoupe was purposely designed > > to flutter and make noise as a stall warning device? And that people > > over the years have put stiffeners in this area to make it stop in the > > believe that it was a design and in doing so disabled the stall > > warning? > > > > Kevin1 > > > > > > > > > > ------------------------------------ > > > > Yahoo! Groups Links > > > > > > >
