NCTAM papers, National Congress of Theoretical and Applied Mechanics, Japan
53rd NCTAM papers, National Congress of Theoretical and Applied Mechanics, Japan
Session ID : 3C8
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OS3
Development of Accurate Optimization Method of the TSTO Spaceplane - Accurate Aerodynamics Model and Multi-Objective Optimization
*Koji ShimoyamaKozo FujiiHiroaki Kobayashi
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Abstract
An accurate comprehensive optimization method of the TSTO spaceplane has been developed. A new aerodynamics model bases on the data obtained by accurate CFD simulations. Strong aerodynamic interaction occurs between the Booster and the Orbiter in the CFD simulations, and it indicates the importance of the accurate aerodynamics model. The optimization using the new aerodynamics model results in the heavier gross take-off weight compared to the result using the conventional aerodynamics model. Furthermore, multi-objective optimization, in which the gross take-off weight and the time at separation should be minimized, is also implemented. It indicates that the propulsion parameter which control the flow rate of captured air during supersonic flight plays an important role in the trade-off relation between these objectives.
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© 2004 Committee for Mechanics and Structure,Science Council
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