15 - Guest lectures

TOWARDS MULTI-DISCIPLINARY OPTIMIZATION OF A GENERIC HYPERSONIC VEHICLE – AN OVERVIEW OF RESEARCH AT LHSR, IISC

S. Rao, Indian Institute of Science, India

Hypersonic systems demand a highly integrated design approach in which strong multi-physics coupling must be resolved while validation data remain scarce in the open literature, making the multi-objective optimisation of a generic hypersonic vehicle extremely challenging. This presentation showcases research at the Laboratory for Hypersonic and Shock Wave Research (LHSR), Indian Institute of Science, on the gasdynamics of high-speed internal and external flows, leading towards the aerothermodynamic design of key subsystems for an air-breathing hypersonic vehicle. Start/unstart studies on multi-ramp mixed-compression intakes have revealed key insights into how cowl placement governs the regime of intake buzz and the scaling of its frequency. Current efforts are directed towards establishing similar guidelines for streamline-traced intakes, which are more amenable to integration with the waverider-based forebody required for high aerodynamic efficiency.

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