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Investigation of Missile-Shaped Body with Forward-Facing Cavity at Mach 8

Saravanan, S and Jagadeesh, G and Reddy, KPJ (2009) Investigation of Missile-Shaped Body with Forward-Facing Cavity at Mach 8. In: Journal of Spacecrft and Rocket, 46 (3). pp. 577-591.

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Official URL: http://www.aiaa.org/content.cfm?pageid=406&gTable=...

Abstract

A blunt-nosed hypersonic missile mounted with a forward-facing cavity is a good alternative to reduce the stagnation heating rates. The effects of a forward-racing cavity on heat transfer and aerodynamic coefficients are addressed in this paper. Tests were carried out in hypersonic shock tunnel HST2, at a hypersonic Mach number of 8 using a 41 deg apex-angle blunt cone. The aerodynamic forces on the test model with and without a forward-facing cavity at various angles of attack are measured by using an internally mountable accelerometer force balance system. Heat flux measurements have been carried out on the test model with and without a forward-facing cavity of the entire surface at zero degree angle of attack with platinum sensors. A numerical simulation was also carried out using the computational fluid dynamics code (CFX-Ansys 5.7). An important result of this study is that the smaller cavity diameter has the highest lift-to-drag ratio, whereas the medium cavity has the highest heat flux reduction. Theshock structure around the test model has also been visualized using the Schlieren flow visualization technique. The visualized shock structure and the measured aerodynamic forces on the missile-shaped body with cavity configurations agree well with the axisymmetric numerical simulations.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to American Institute of Aeronautics and Astronautics.
Department/Centre: Division of Mechanical Sciences > Aerospace Engineering (Formerly, Aeronautical Engineering)
Date Deposited: 26 Aug 2009 18:35
Last Modified: 26 Aug 2009 18:35
URI: http://eprints.iisc.ernet.in/id/eprint/21114

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