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Operation and Performance of a Shock Tube with Heated Driver

Evans, Robert C. (1959) Operation and Performance of a Shock Tube with Heated Driver. Hypersonic Research Project Memorandum, 48. California Institute of Technology , Pasadena, CA. (Unpublished)

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A shock tube was constructed with a driver section which could be heated with "Calrod" heaters to temperatures of approximately 300°C. This temperature rise increased the shock wave Mach number by about 40 per cent, or from values of 7.7 to 10 for pressure ratios of 2O,000 across the diaphragm. This increase is sufficient to produce partial dissociation of the oxygen molecules behind the shock wave. The flow behind the shock wave was as uniform as that produced by an unheated driver. A transition section was designed to enable the major portion of the low pressure chamber to be constructed of round Shelby tubing, while the test section still had a flat top and a flat bottom. The flat surfaces are advantageous for optical studies and for convenience in instrumenting the tube. Despite the fact that the transition was gradual, disturbances were present in the flow in the test section, 18 inches downstream of the transition section.

Item Type:Report or Paper (Technical Report)
Additional Information:Hypersonic Research Project Memorandum No. 48. Army Ordnance Contract No. DA-04-495-Ord-19. Army Project No. 5B0306004 Ordnance Project No. TB3-0118 OOR Project No. 1600-PE.
Group:Hypersonic Research Project
Funding AgencyGrant Number
U.S. Army Office of OrdnanceDA-04-495-Ord-19
Series Name:Hypersonic Research Project Memorandum
Issue or Number:48
Record Number:CaltechAUTHORS:20151029-151142532
Persistent URL:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:61719
Deposited On:29 Oct 2015 23:57
Last Modified:03 Oct 2019 09:11

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