Re: Sparrow strainer stall

Bruce Crain
 

Hi Jon!
No the canard isn't stalled but it looks like the elevator is stalled.  The tufts are gyrating in circular motion on the elevator right in front of the sparrow strainer and also in the outboard end of the elevator.  It would be interesting to see if every Quickie had the same scenario with respect to the elevator.  I had suspicion-ed that in the past when I flew through the rain.  The dust mixed with the rain and made trails from out board to inboard.
 
We could be loosing lift in this area but how to correct it?  The elevator slot core is pretty tight so I am not sure a seal is possible.  Also, perhaps an air dam on the outboard end of the elevator could be possible.  If lift is re-attached to the top of the elevator would the sparrow strainer need to be augmented to keep it level in flight?  There would be a lot more up lift in the elevator if re attachment were possible.
 
Could we be loosing airspeed!!!  OMGosh!  Somebody fix it!!  Any aerodynamicists in the room?!!
 
Bruce Crain

---------- Original Message ----------
From: "Jon Finley" <jd@...>
To: main@Q-List.groups.io
Subject: Re: [Q-List] Sparrow strainer stall
Date: Tue, 17 Mar 2020 13:00:41 -0700

Sorry Bruce... I just saw this.

It's hard to see from the photo - are the tufts on the canard also stalled??

Jon

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