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.
Experiments in Fluids – Springer Journals
Published: Mar 22, 2005
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