Dynamic force balances for short-duration hypersonic testing facilities |
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| Authors: | Niranjan Sahoo Kiran Suryavamshi K P J Reddy David J Mee |
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| Institution: | (1) Department of Aerospace Engineering, Indian Institute of Science, Bangalore, 560 012, India;(2) Division of Mechanical Engineering, The University of Queensland, Brisbane, 4072, Australia |
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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- s test period. The measured drag forces compared well with the theoretical values estimated using Newtonian theory. |
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