Centre of Pressure & Drag of Rocket at Supersonic Speeds

[aristox]

I am new to the subject of Aerodynamics and would like to know if there is any direct method to calculate (or obtain graph) the CP and Drag of a simple rocket with a ogive nose and 4 fins. I know that u cannot use Barrowmans method at Supersonic speeds, and I do not have any access to Hoerners book. (im from India). I know that, from Hans Olaf Toft's software "AeroLab" (D.A.R.K.)that Shape, Dimensions, surface roughness, no & position of fins & lugs, Reynolds no, mach no are the required input parameters. what I dont know is how he obtained the CP at supersonic speeds, and the graph of Drag v/s Mach no. I would hope that someone could elaborate with OPTIMAL (not empirical) relations on how to do so.
Thanx.

 

[gdifonzo]

Hi Aristox
try this site

http://www.grc.nasa.gov/

http://WWW/K-12/airplane/guided.htm

and look at the "Model Rockets" section

I hope it can help

 

[josephtoh]

Hi, kindly recommend any supplier that supplies instrument for force balance at wind tunnel. Thanks.