Download - 1 AAE 450 Spring 2008 Stephen Bluestone March 20, 2008 Propulsion Final Presentation Slides 1
1<#>AAE 450 Spring 2008
Stephen BluestoneMarch 20, 2008
PropulsionFinal Presentation Slides
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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
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Engine Cost Cost of Engines calculated from equations
based on mass flow, thrust, and dry weight Cost equations are extrapolated from
historical valuesPayload 1st Stage
Engine Cost2nd Stage
Engine Cost3rd Stage
Engine CostTotal Engine
Cost
200g $679,720 $263,690 $79,930 $1,023,340
1kg $634,090 $209,930 $86,860 $930,880
5kg $1,138,700 $339,700 $80,900 $1,559,300
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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 2008Propulsion – Propellants
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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 2008Propulsion - Propellants
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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