1. AAE 450 Spring 2008 Jayme Zott 2-14-08 Aerothermodynamics Coefficient of Drag vs. AOA CFD update

2. AAE 450 Spring 2008 Overview  Cd varies with AOA and M  Matlab code: –Inputs: Mach, AOA –Outputs: Cd –cd_m2.m  Based on historical and empirical (wind tunnel) data  Temporary Substitute  Aero group is currently finalizing code based on analysis of Cn, Cm, Cp, and Cd Aerothermodynamics Ref. [1] Sutton, Biblarz Ref. [2] Woods 2

3. AAE 450 Spring 2008 CFD Updates *Special thanks to Rhodes and Schwing  Mesh Completed  Solver running  Have access to more RAM  Convergence = reaching solution  Solution does not match Vanguard values  Still working out bumps with UNIX Aerothermodynamics Future Work  Correct CFD for Vanguard check  Complete Cd, Cp, Cm, Cn code with aero group for next week’s design analysis 3

4. AAE 450 Spring 2008 References 1.Sutton, George P., and Oscar Biblarz. Rocket Propulsion Elements. New York: John Wiley & Sons, Inc., 2001. 2. The Martin Company, “The Vanguard Satellite Launching Vehicle”, Engineering Report No. 11022, April 1960. 3. Woods, Alex, Budzinski, Brian, and Strauss Christopher. 4. Schwing, Alan, and Rhodes, Justin 5. Fluent: Fluid Flow Modeling Webinars, Compressible Flows - Solving Compressible Flow Problems; June 25, 2005. [http://www.fluent.com/elearning/resources/webinars/webinars_cfd.htm. accessed 1/29/08] 6. Numerous ME/AAE professors and graduate students: Tsohas, Merkle, Blaisdell, Ni, Murthy 4