Aerodynamic force measurement on a large-scale model in a short duration test facility
- Japan Aerospace Exploration Agency, Kakuda Space Propulsion Center, 1-Koganesawa, Kimigaya, Kakuda, Miyagi 981-1525 (Japan)
A force measurement technique has been developed for large-scale aerodynamic models with a short test time. The technique is based on direct acceleration measurements, with miniature accelerometers mounted on a test model suspended by wires. Measuring acceleration at two different locations, the technique can eliminate oscillations from natural vibration of the model. The technique was used for drag force measurements on a 3 m long supersonic combustor model in the HIEST free-piston driven shock tunnel. A time resolution of 350 {mu}s is guaranteed during measurements, whose resolution is enough for ms order test time in HIEST. To evaluate measurement reliability and accuracy, measured values were compared with results from a three-dimensional Navier-Stokes numerical simulation. The difference between measured values and numerical simulation values was less than 5%. We conclude that this measurement technique is sufficiently reliable for measuring aerodynamic force within test durations of 1 ms.
- OSTI ID:
- 20644137
- Journal Information:
- Review of Scientific Instruments, Vol. 76, Issue 3; Other Information: DOI: 10.1063/1.1865815; (c) 2005 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
- Country of Publication:
- United States
- Language:
- English
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