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Stephen Bluestone March 20, 2008 Propulsion Final Presentation Slides

Stephen Bluestone March 20, 2008 Propulsion Final Presentation Slides. 1. Engine Sizing. The amount of propellant required for each rocket/stage was determined in Model Analysis Inert mass fraction, f inert , was optimized between the structures and propulsion groups for final design.

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Stephen Bluestone March 20, 2008 Propulsion Final Presentation Slides

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  1. Stephen BluestoneMarch 20, 2008PropulsionFinal Presentation Slides AAE 450 Spring 2008 1

  2. Engine Sizing • The amount of propellant required for each rocket/stage was determined in Model Analysis • Inert mass fraction, finert, was optimized between the structures and propulsion groups for final design

  3. Engine Cost • Cost of Engines calculated from equations based on mass flow, thrust, and dry weight • Cost equations are extrapolated from historical values

  4. Historical Failure Probability • U.S. Solid Rocket Systems (Failures/Attempts) • 6 / 412 (1.4%) Failures between 1980-20041 • 19 / 3382 (0.56%) Failures between 1964-19982 • Solid Propulsion Failure Rates (Failures/Attempts) • Upper Stage 0.0161 161/10000 • Monolithic 0.0025 25/10000 • Segmented 0.0077 77/10000 • Total 0.0056 56/10000 AAE 450 Spring 2008 Propulsion – Propellants

  5. Catastrophic Failure • Historically Solid Rocket failure results in catastrophic failure 37% of the time (19 solid failures, 7 were catastrophic) [1964-1998]1 • Solid Rocket Failure Rate (Failures/Attempts) • Failure 0.0056, 56/10000 • Catastrophic Failure 0.0021, 21/10000 AAE 450 Spring 2008 Propulsion - Propellants

  6. References • Nieroski, John S., and Friedland, Edward I., “Liquid Rocket Engine Cost Estimating Relationships,” AIAA Paper 65-533, July 1965. • Humble, Ronald W., Henry, Gary N., Larson, Wiley J. “Hybrid Rocket Propulsion Systems,” Space Propulsion Analysis and Design, 1st ed. revised, Primis, New York, 1995 • Chang, I-Shih., Tomei, Edmardo Joe., “Solid Rocket Failures in World Space Launches.” AIAA Paper 2005-3793, Joint Propulsion Conference and Exhibit, 41st, Tuscon, Az, July 10-13, 2005 • Sauvageu, Donald R., Allen, Brian D., “Launch Vehicle Historical Reliability.” AIAA-1998-3979 AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit, 34th, Cleveland, OH, July 13-15, 1998

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