INTERFEROMETRIC MEASUREMENT OF THE NONEQUILIBRIUM FLOW FIELD AROUND A CONE
ARMY BALLISTIC RESEARCH LAB ABERDEEN PROVING GROUND MD ABERDEEN PROVING GROUND
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Interferometric measurement of the density field around a cone in a stream of oxygen at approximately 10,000 ftsec is reported. The test flow was generated in an expansion tube, which utilized an unsteady expansion for the purpose of total enthalpy multiplication. The experiment shows that vibrational equilibrium is achieved close behind the shock, while chemical relaxation occurs throughout the shock layer. The experimental density distribution and shock shape are compared with theoretical predictions, and good agreement is found.
- Fluid Mechanics