Re: [RCSE] Aerodynamic washout

2001-12-19 Thread Rick Van Clief
Subject: Re: [RCSE] Aerodynamic washout > > >Generally speaking any type of washout is not the ideal approach. > >Washout is used to compensate for bad planform design. > > I have to disagree here. For a given tip stall margin, > a slight amount of washout (1 degree or so) al

Re: [RCSE] Aerodynamic washout

2001-12-18 Thread Gavin Botha
I think we are agreeing on the aerodynamics, but disagreeing on the applications. Mark Drela wrote: GB> Generally speaking any type of washout is not the ideal approach. > >Washout is used to compensate for bad planform design. > MD> I have to disagree here. For a given tip stall margin, > a

Re: [RCSE] aerodynamic washout

2001-12-18 Thread Oleg Golovidov
>If you're designing a wing with a flat-bottomed airfoil, it's >convenient to create the effect of washout by thinning the airfoil >as you go out from the root; this reduces camber and lowers the angle >of attack at which CL = 0. So for example Mark Drela's Allegro 2M >uses an 8.7% AG35 at the roo

Re: [RCSE] aerodynamic washout

2001-12-17 Thread Mike1popescu
Hi Oleg, this may seem unusual to you. I suggest you fly one of my planes and then you drop me a line. Or betterr yet make a wing as I do. Talking too much about theory will make you falling off a thermal. Mike