Repetitively Pulsed Hypersonic Flow Apparatus for Diagnostic Development Academic Article uri icon

abstract

  • Arepetitively pulsed hypersonic test facility has been constructed and characterized. This apparatus was designed to enable advanced laser diagnostic development. The underlying principle is to synchronize the intermittent tunnel operation with the laser pulses to achieve effectively continuous operation. Repetitively pulsed (2-20 ms pulse lengths) uniform supersonic flow at Mach 4.6 and hypersonic flow at Mach 6.2 were demonstrated for extended operation. The nozzle flows were characterized using fast-response pressure sensors and NO planar laser-induced fluorescence imaging for two-dimensional temperature and velocity measurements. The pulse-to-pulse impact pressure repeatability was within 1.0%, corresponding to exit flow velocity and temperature fluctuations of 0.7 and 1.0%, respectively. The apparatus can operate over a unit Reynolds number range of 6:0 104 to 3: 2 0 10 6 m -1. 2011 by the American Institute of Aeronautics and Astronautics, Inc. All rights reserved. 2011 by the authors. Published by the American Institute of Aeronautics and Astronautics, Inc.

published proceedings

  • AIAA Journal

author list (cited authors)

  • Snchez-Gonzlez, R., Srinivasan, R., Hofferth, J., Kim, D. Y., Tindall, A. J., Bowersox, R., & North, S. W.

citation count

  • 17

complete list of authors

  • Sánchez-González, Rodrigo||Srinivasan, Ravi||Hofferth, Jerrod||Kim, Do Yong||Tindall, Andrew J||Bowersox, Rodney DW||North, Simon W

publication date

  • March 2012