NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Collections About News Help Login
Back to Results
Real-Gas Correction Factors for Hypersonic Flow Parameters in HeliumThe real-gas hypersonic flow parameters for helium have been calculated for stagnation temperatures from 0 F to 600 F and stagnation pressures up to 6,000 pounds per square inch absolute. The results of these calculations are presented in the form of simple correction factors which must be applied to the tabulated ideal-gas parameters. It has been shown that the deviations from the ideal-gas law which exist at high pressures may cause a corresponding significant error in the hypersonic flow parameters when calculated as an ideal gas. For example the ratio of the free-stream static to stagnation pressure as calculated from the thermodynamic properties of helium for a stagnation temperature of 80 F and pressure of 4,000 pounds per square inch absolute was found to be approximately 13 percent greater than that determined from the ideal-gas tabulation with a specific heat ratio of 5/3.
Document ID
19980228191
Acquisition Source
Headquarters
Document Type
Other - NASA Technical Note (TN)
Authors
Erickson, Wayne D. (NASA Langley Research Center Hampton, VA United States)
Date Acquired
September 6, 2013
Publication Date
September 1, 1960
Subject Category
Fluid Mechanics And Heat Transfer
Report/Patent Number
L-1135
NASA-TN-D-462
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

Related Records

There are no records associated with this record.
No Preview Available