Sound and fluctuating disturbance measurements in the settling chamber and test section of a small, Mach 5 wind tunnelDisturbance measurements were made using a hot-wire anemometer and piezoelectric pressure transducers in the settling chamber and free stream of a small Mach 5 wind tunnel. Results from the two instruments are compared and acoustical disturbances in the settling chamber are discussed. The source of the test-section noise is identified as nozzle-wall waviness at low Reynolds numbers and as eddy-Mach-wave radiation from the turbulent boundary layer on the nozzle wall at high Reynolds numbers.
Document ID
19760039795
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Anders, J. B. (NASA Langley Research Center Hampton, VA, United States)
Stainback, P. C. (NASA Langley Research Center Hampton, VA, United States)
Beckwith, I. E. (NASA Langley Research Center; High-Speed Aerodynamics Div. Hampton, Va., United States)
Keefe, L. R. (Wyle Laboratories Hampton, Va., United States)
Date Acquired
August 8, 2013
Publication Date
January 1, 1975
Subject Category
Research And Support Facilities (Air)
Meeting Information
Meeting: ICIASF ''75; International Congress on Instrumentation in Aerospace Simulation Facilities