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 : JUN 1969

Pagination or Media Count : 32

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