Allegro-List Digest Archive

Wed 05/03/06


Total Messages Posted: 3



Today's Message Index:
----------------------
 
     1. 04:50 AM - Re: drag polar and V speedsdrag polar and V speeds (Thom Riddle)
     2. 12:46 PM - Re: drag polar and V speedsdrag polar and V speeds (Thom Riddle)
     3. 01:05 PM - Re: drag polar and V speedsdrag polar and V speeds (Thom Riddle)
 
 
 


Message 1


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    Time: 04:50:02 AM PST US
    From: Thom Riddle <jtriddle@adelphia.net>
    Subject: Re: drag polar and V speedsdrag polar and V speeds
    --> Allegro-List message posted by: Thom Riddle <jtriddle@adelphia.net> Paul, I've done some glide and sink speed testing but it was mid day when the thermals were active. To do this well it must be during very calm air, which I'll do at some time. I guess that regardless of what the factory says, the empirical testing should give me what I want to know. What I meant by Vy varying with weight was that when flying solo, the Vy would be less than when flying at MTOW which is the flight weight at which the V speeds are normally reported. Yes, the Vy and Vx are proportional to the square root of the flying weight. Thom in Buffalo


    Message 2


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    Time: 12:46:21 PM PST US
    Subject: Re: drag polar and V speedsdrag polar and V speeds
    From: "Thom Riddle" <jtriddle@adelphia.net>
    --> Allegro-List message posted by: "Thom Riddle" <jtriddle@adelphia.net> Allegro-ers, After extensive searching, I found what I was looking for and have attached three files (graphs). These are empirical results of actual wind tunnel studies of the SM701 airfoil, which was originally designed for a high performance sailplane. No wonder it is difficult to get the Allegro to come down without slowing down to the mushing region! Thom in Buffalo Read this topic online here: http://forums.matronics.com/viewtopic.php?p=32602#32602


    Message 3


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    Time: 01:05:39 PM PST US
    Subject: Re: drag polar and V speedsdrag polar and V speeds
    From: "Thom Riddle" <jtriddle@adelphia.net>
    --> Allegro-List message posted by: "Thom Riddle" <jtriddle@adelphia.net> I could not attach more than one file at a time for some reason I don't understand. So here is a second file. Thom -------- Thom in Buffalo do not archive Read this topic online here: http://forums.matronics.com/viewtopic.php?p=32606#32606




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