Re: Sparrow strainer stall

Jay Scheevel

I think that the Roncz airfoil would probably have been the way to go, but unfortunately, as David said, Burt Rutan did not win that argument. I think, if that airfoil had been used, there would have been no need for the carbon fiber spar.  Maybe the next time Sam replaces his canard, he can use that airfoil 😊





From: <> On Behalf Of Bruce Crain
Sent: Saturday, March 21, 2020 3:56 PM
Subject: Re: [Q-List] Sparrow strainer stall


I like this picture.  I wasn't smart 'nough to understand the others you sent Jay.


I am noticing the aft end of the airfoils look different.  It looks like there is negative camber on the aft end of the LS1.  The Epler does away with that negative camber.  Would that negative camber make the aft end want to pull up on the elevator?  Plus would it make the airflow blurble up after the trailing edge of the elevator.  

Not sure about the top of the LS1 airflow going inboard with respect to the 2 airfoils!

Any speculation Jay?

Do we need to design a new airfoil for the canard on the Quickie to make it go faster or slow the stall speed?

"Not a Rock Scientist"  

Bruce Crain

Please note: message attached

From: "Jay Scheevel" <jay@...>
To: <>
Subject: Re: [Q-List] Sparrow strainer stall
Date: Fri, 20 Mar 2020 17:54:41 -0600

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