Oblique Shock Angle Calculation

[Freyster98]

I'm trying to write a MATLAB .m-file that will calculate the lift and drag on a supersonic airfoil using only the angle of attack, mach number, and geometry of the airfoil. I'm getting stuck on the oblique shock angle calculation because I cannot find an equation that is solved for the shock angle (beta). Does anyone know what equation I can use for this? Other than that, I think I'm all set. Any help you can give would be greatly appreciated. Thanks!

 

[rugabug]

http://upload.wikimedia.org/math/2/7/b/27b8202d60430e48b08cf5b6498c1097.png
You can use MATLAB to solve for beta or if I remember when I get home I have the equation for beta in a textbook.

 

[Freyster98]

http://upload.wikimedia.org/math/2/7/b/27b8202d60430e48b08cf5b6498c1097.png
You can use MATLAB to solve for beta or if I remember when I get home I have the equation for beta in a textbook.

I have that equation, but I just found out I don't have the symbolic math toolbox for MATLAB and that's why I couldn't solve the equation for beta. I used Maple to solve for beta and got a ridiculously long result.

 

[rugabug]

I have that equation, but I just found out I don't have the symbolic math toolbox for MATLAB and that's why I couldn't solve the equation for beta. I used Maple to solve for beta and got a ridiculously long result.

The equation in my book is ridiculously long. They actually split it into 3 equations.

 

[ahmedeltabee]

man u need to make an iteration using MATLAB i did it before and this is a code for it

 

[boneh3ad]

Or just use the freaking fsolve or solve commands to do it numerically, since I assume that is what you are supposed to do anyway.

 

[bcilek]

I have that equation, but I just found out I don't have the symbolic math toolbox for MATLAB and that's why I couldn't solve the equation for beta. I used Maple to solve for beta and got a ridiculously long result.

Symbolic Math Toolbox! That is really something i desire very much i wonder why they did not put the inverse laplace transform capability on MATLAB...

 

[sorter]

Use maple its just great

 

[boneh3ad]

Maple is craptastic. Mathematica is a nicer package IMO.

 

[shabdiz_206]

I'm trying to write a MATLAB .m-file that will calculate the lift and drag on a supersonic airfoil using only the angle of attack, mach number, and geometry of the airfoil. I'm getting stuck on the oblique shock angle calculation because I cannot find an equation that is solved for the shock angle (beta). Does anyone know what equation I can use for this? Other than that, I think I'm all set. Any help you can give would be greatly appreciated. Thanks!

i need this your program.can you help me? if it possible for you please send that to me.thanks
mhd.hadipour@yahoo.com