Accession Number:

AD0270194

Title:

PARAMETERS CONTROLLING THE PERFORMANCE OF SECONDARY INJECTION

Descriptive Note:

Corporate Author:

NAVAL ORDNANCE TEST STATION CHINA LAKE CALIF

Personal Author(s):

• GREEN,C.J.
• BENHAM,C.B.

Report Date:

1961-12-01

Pagination or Media Count:

1.0

Abstract:

Experimental data indicate that wide variations in the performance of secondary injection can be attributed to injectant-fluid properties and variations in the geometry of injection. A onedimensional model of this fluid-interaction process was analyzed to determine the effects of the injectant-fluid properties and motor variables on the pressure recovery of the main-stream gases. The motor parameters investigated were chamber pressure and propellant-flame temperature. The injectant parameters investigated were temperature, velocity, axial location of the injection port, angle of injection, heat of vaporization, specific heat at constant pressure, specific-heat ratio, and molecular weight. This analysis provides a better understanding of secondary-injection phenomena and establishes general criteria for the proper selection of injectants. Author

Descriptors:

• *INJECTION
• *SUPERSONIC NOZZLES
• JET MIXING FLOW
• PRESSURE
• ROCKET ENGINES
• SECONDARY INJECTION
• THERMODYNAMICS
• THRUST

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE