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Dynamic force balances for short-duration hypersonic testing facilities

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Abstract

Two force balance techniques for use in hypersonic impulse facilities are compared by measuring the drag force on a 30° semi-apex-angle blunt cone model in a hypersonic shock tunnel at a free stream Mach number of 5.75. An accelerometer-based balance and a stress-wave force balance were tested simultaneously on the same model to measure the drag force. It was found that drag force measurements could be made using both techniques in a flow with a 450-μs test period. The measured drag forces compared well with the theoretical values estimated using Newtonian theory.

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Acknowledgements

The support rendered by S. Saravanan, K. Nagashetty, L. Gangadhar, Viren Menezes and Vinayak Kulkarni during the course of this work is gratefully acknowledged.

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Correspondence to K. P. J. Reddy.

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Sahoo, N., Suryavamshi, K., Reddy, K.P.J. et al. Dynamic force balances for short-duration hypersonic testing facilities. Exp Fluids 38, 606–614 (2005). https://doi.org/10.1007/s00348-005-0932-5

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  • DOI: https://doi.org/10.1007/s00348-005-0932-5

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