CaltechAUTHORS
  A Caltech Library Service

Study of Bow-Shock Wave Unsteadiness in Hypervelocity Flow from Reservoir Fluctuations

Marineau, Eric C. and Hornung, Hans G. (2010) Study of Bow-Shock Wave Unsteadiness in Hypervelocity Flow from Reservoir Fluctuations. In: 48th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition. American Institute of Aeronautics and Astronautics , Reston, VA, Art. No. 2010-382. ISBN 9781600869594. https://resolver.caltech.edu/CaltechAUTHORS:20190930-110458533

Full text is not posted in this repository. Consult Related URLs below.

Use this Persistent URL to link to this item: https://resolver.caltech.edu/CaltechAUTHORS:20190930-110458533

Abstract

The unsteadiness of the bow-shock wave in front of a 7-inch diameter Apollo-shaped capsule was measured in the T5 hypervelocity shock tunnel at GALCIT. The pressure fluctuations in the reservoir generate expansion and compression waves traveling down the nozzle which interact with the bow-shock in front of the model. The resulting bow-shock displacement is measured using a high-speed Schlieren system where the shock position is extracted using a sub-pixel tracking algorithm. Oscillations of the shock position with amplitudes between ±1% to ±5% of the standoff distance are measured. The power spectrum of the bow-shock motion displays frequencies in the 10 kHZ range corresponding to the frequency content of the pressure fluctuations measured in the reservoir. The RMS free stream pressure disturbances in that frequency range are estimated to be between 3.5% and 7%. Simulations of the effect of acoustic waves on spheres were used to give a crude estimate of the facility noise level in the 10 kHz range.


Item Type:Book Section
Related URLs:
URLURL TypeDescription
https://doi.org/10.2514/6.2010-382DOIArticle
ORCID:
AuthorORCID
Hornung, Hans G.0000-0002-4903-8419
Additional Information:© 2010 American Institute of Aeronautics and Astronautics, Inc.
Group:GALCIT
Other Numbering System:
Other Numbering System NameOther Numbering System ID
AIAA Paper2010-382
Record Number:CaltechAUTHORS:20190930-110458533
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20190930-110458533
Official Citation:Study of Bow-Shock Wave Unsteadiness in Hypervelocity Flow from Reservoir Fluctuations Eric Marineau and Hans Hornung 48th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition. https://doi.org/10.2514/6.2010-382
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:98938
Collection:CaltechAUTHORS
Deposited By: George Porter
Deposited On:04 Oct 2019 20:48
Last Modified:04 Oct 2019 20:48

Repository Staff Only: item control page