From: Dan Reda [Daniel.C.Reda@nasa.gov]
Sent: Friday, May 09, 2003 4:04 PM
To: steves@ecn.purdue.edu
Subject: Re: range schlieren of transition on cone

Steve - they are mine.Problem is, there are an orthogonal pair taken 
at each station, data from both pictures used to calculate pitch and 
yaw angles, then results used to define the "most windward ray" or 
ray of the four with the minimum angle of attack. Since you only have 
one picture from each shot/station, no way to say whether or not 
these views were used to read transition locations. Still, they are 
"beautiful". Last shots ever done in the pressurized range at NOL.
Dan







_____________

>Stetson gave me two beautiful schlieren photos of transition
>on a sharp cone in the range at Mach 4.  I scanned them into
>grayscale at 300 dpi with pretty good results.  They are at
>http://roger.ecn.purdue.edu/~aae519/images/401-reda-rangephoto-shot6727.pdf
>http://roger.ecn.purdue.edu/~aae519/images/401-reda-rangephoto-shot6728.pdf
>
>These are about 5-6MB.
>You can see the compression waves radiated from the turbulence, etc.
>
>Dan, please take a look at these and let me know if you have any better
>impression whether these are really your images or not.
>
>regards
>
>Steven P. Schneider
>Assoc. Prof., Purdue AAE
>Aerospace Sciences Lab/Purdue Univ. Airport
>1375 Aviation Drive
>West Lafayette, IN 47907-2015 USA
>[same physical location, new address]
>tel 765-494-3343 fax 765-496-3321
>email steves@ecn.purdue.edu

-- 
Dr. Dan Reda
Senior Staff Scientist
Space Technology Division
MS: 229-3
NASA-Ames Research Center
Moffett Field, CA 94035-1000
650-604-6034