Accession Number:

AD0686405

Title:

SAMPLING PROBE FOR INSTANTANEOUS MASS SPECTROMETRIC ANALYSIS OF RAREFIED ENTHALPY FLOW

Descriptive Note:

Final rept. 1 Jul 1966-30 Sep 1968

Corporate Author:

ARNOLD ENGINEERING DEVELOPMENT CENTER ARNOLD AFB TN

Personal Author(s):

Report Date:

1969-04-01

Pagination or Media Count:

44.0

Abstract:

An aerodynamically shaped probe was developed for instantaneous mass spectrometric analyses of gas samples taken from low density, high enthalpy, hypersonic flows. The requisite .00001 torr operating pressure for a quadrupole mass spectrometer mounted in the water-cooled probe was established and maintained by a liquid-hydrogen cryopump. During an initial series of 5-min tests, the detected composition of an arc-heated airflow with a stagnation condition of approximately 10 atm at 3000K agreed well with a nonequilibrium flow expansion calculation.

Subject Categories:

  • Aerodynamics
  • Fluid Mechanics
  • Thermodynamics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE