1. with Pilot the nozzle exit. This technique is believed to be accurate and is used extensively to establish free stream conditions in all of the Veridian Engineering (Calspan) shock tunnel facilities. The second technique usedto establish the free stream condition was an axis-symmetric expansion calculation with a CFO technique. This technique has been used by the author for establishing many test conditions in these facilities, but is not used extensively as the quasi-one dimensional method. A summary of the test conditions achieved in the test program that were computed with the first technique are shown in Tables I and II. The Pitot pressure is the average value measured over the tests (approximately 10 tests). The 1-0 results are obtained by expanding to the value for a particular test. Since the 1-0 code is inviscid, the calculation is continued through the nozzle until the calculated and the measured Pitot values are in agreement. The standard deviation and repeatability are given as well to indicate the repeatability of the facility.
2. Value Reservoir 7521 psis - 175.5 psis 2.33 Pressure Reearvolr 1.06x10' - 1.41x1o' fr/sac' 1.33 Enthalpy fr/sac' Mach 9.33 -0.026 0.28 Number Velocity 13875 - 85.32 fl/sec 0.61
3. fl/sec Temperature 918.1 •R - 15.52 °R 1.69 Density 5.648x10 - 1.47x10·1slugalfl' 2.60
4. slugalfl' Pressure 0.0626 -0.0014 psia 2.21