1. Chris Strauss Aerothermodynamics- CFD Drag Standard Deviation/CMARC Update (Method by Chris Strauss, credit for results and code to Brian Budzinski and Jayme Zott)
AAE 450 Spring 2008

2. Drag Coefficient Standard Deviation
Method
Create a randomizer that produces random values of angle of attack from 0-10 degrees
Fed angles of attack into Cd code to obtain values for Cd
Cd code created by Jayme Zott
Entered values for Cd into Excel to calculate standard deviation with standard deviation function
AAE 450 Spring 2008
Aerothermodynamics

3. Results CMARC Update Future Work
Drag Std Dev=13.29%
Close to Vanguard drag std. dev. (Drag=10%)
Appendix p. A-4, Table A-1.
Found that CMARC can only handle flows up to M=0.9
CMARC being dropped as CFD method
Future Work
Run final design configurations in working Fluent model and write report sections
AAE 450 Spring 2008
Aerothermodynamics

4. References
“The Vanguard Report”, The Martin Company, Engineering Report No , April 1960
AAE 450 Spring 2008

5. Backup Slides - CMARC Progress until stopped
AAE 450 Spring 2008
Aerothermodynamics

6. Backup Slides – CMARC Input
AAE 450 Spring 2008