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Trout, Arthur M

Publications and source records attributed to Trout, Arthur M.

5 records
All sourcesNASA NTRSDOE OSTI
NASA NTRS1953

Free-jet Altitude Investigation of a 20-inch Ram-jet Combustor with a Rich Inner Zone of Combustion for Improved Low-temperature-ratio Operation

An investigation of the altitude performance of a 20-inch-diameter high-temperature-ratio ram-jet combustor which had been redesigned to provide good combustor efficiency over a wide range of temperature ratios was conducted at zero angle of attack in a free-jet facility at a Mach number of 3.0. Configurations investigated incorporated a cylindrical control sleeve which confined the injected fuel at low over-all fuel-air ratios to about 40 percent of the engine air flow. This provided an optimum fuel-air mixture over a portion of the flame holder when the over-all fuel-air ratio was about 0.02. The configurations with the control sleeve operated with good combustor efficiency at fuel-air ratios as lean as 0.015, whereas the original engine had a lean blow-out limit at a fuel-air ratio of about 0.03. The control sleeve had little effect upon the high-fuel-air-ratio performance of the engine.

COMBUSTION, RAM-JET ENGINES↗
NASA NTRS1951

Analysis of thrust augmentation of turbojet engines by water injection at compressor inlet including charts for calculating compression processes with water injection

A psychrometric chart having total pressure (sum of partial pressures of air and water vapor) as a variable, a Mollier diagram for air saturated with water vapor, and charts showing the thermodynamic properties of various air-water vapor and exhaust gas-water vapor mixtures are presented as aids in calculating the thrust augmentation of a turbojet engine resulting from the injection of water at the compressor inlet. Curves are presented that show the theoretical performance of the augmentation method for various amounts of water injected and the effects of varying flight Mach number, altitude, ambient-air temperature, ambient relative humidity, compressor pressure ratio, and inlet-diffuser efficiency. Numerical examples, illustrating the use of the psychrometric chart and the Mollier diagram in calculating both compressor-inlet and compressor-outlet conditions when water is injected at the compressor inlet, are presented.

Wilcox, E Clinton↗