Accession Number:

AD0689540

Title:

OPERATION CYCLE OF EXPANSION TUBE WITH NOZZLE PLATE.

Descriptive Note:

Memorandum rept.,

Corporate Author:

BALLISTIC RESEARCH LABS ABERDEEN PROVING GROUND MD

Personal Author(s):

• Gerber,Nathan
• Bartos,Joan M.

Report Date:

1969-06-01

Pagination or Media Count:

32.0

Abstract:

The report presents an analysis of the operation cycle of an expansion tube with a nozzle plate located at the secondary diaphragm. Analyses are given for two situations 1 the secondary diaphragm breaks instantly, and 2 it breaks after a delay due to finite mass. Equations are developed applicable to real gas in thermodynamic equilibrium in the driven and expansion sections of the tube. A discussion of numerical and graphical computational procedures is presented and calculations for air are shown for cases representative of operating conditions. Author

Descriptors:

• (*SHOCK TUBES
• OPERATION)
• (*NOZZLE CLOSURES
• SHOCK TUBES)
• THERMODYNAMICS
• NUMERICAL ANALYSIS
• NOZZLE THROATS
• REFLECTION
• NOZZLE GAS FLOW
• NOZZLE AREA RATIO

Subject Categories:

• Test Facilities, Equipment and Methods

Distribution Statement:

APPROVED FOR PUBLIC RELEASE