1. 1 AAE 450 Spring 2008 Steven Izzo March 6, 2008 Structures Final Stress Considerations

2. 2 AAE 450 Spring 2008 Structures  Research stress sources  Modify numbers in code  Check for failure/sizing change Method Thrust vectoring- bending- ok for all angles Engine misalignment- torsion and bending- ok for worst case Spin stabilization- torsion and bending- ok unless very fast spin-up Thermal effects- Material property variance- ok unless extreme temperature range Expansion- ok from use of joining like materials Results

3. 3 AAE 450 Spring 2008 Structures  Acoustics- vibration- ok due to solid prop and balloon  Local stresses reserved for a future design  Conclusion- large applied and critical load models lead to no problems with other stresses Future Work  Write Report More Results

4. 4  Steven Hiu and all contributors to the function tanksv2.m  Shurn, Stephan. “Thrust Vector Control.” February 28, 2008.  Stuart, Jeff. “Spin Stabilization of Third Stage(200kg Payload).” February 28, 2008.  Waite, Adam. “Analyzing Loading Based on Test Design.” February 21, 2008.  Wilcox, Nicole. “Thrust Offset Angle- Hybrid and Solid.” February 28, 2008. Class Sources

5. 5 Outside Sources  Boddy, J, Mitchell, J, & Harris, L. “Systems Evaluation of Advanced Structures and Materials in Future Launch Vehicles.” AIAA Journal no. 1103-391, 1967.  Klemans, B. “The Vanguard Satellite Launching Vehicle” The Martin Company, Engineering Report No. 11022, April 1960.  Pisacane, V & Moore, R. Fundamentals of Space Systems. Oxford Press, New York, NY 1994.  Sarafin, T. Spacecraft Structures and Mechanisms: From Concept to Launch. Microcosm, Inc. Torrance, CA 1995.  Sun, C.T. Mechanics of Aircraft Structures. John Wiley & Sons, New York, NY 2006.