Accession Number : ADA187208

Title :   Liquid Gun Diagnostics.

Descriptive Note : Final technical rept. 18 Sep 86-18 Mar 87,

Corporate Author : VERITAY TECHNOLOGY INC EAST AMHERST NY

Personal Author(s) : Talley, Robert L

PDF Url : ADA187208

Report Date : 30 Jun 1987

Pagination or Media Count : 69

Abstract : A baseline instrumentation configuration suitable for investigating a range of liquid propellant gun phenomena and for visualizing the evolution of the gross features of internal combustion phenomena has been defined. The 25 mm LP ignition test fixture, configured for dynamic loading, bipropellant operation, and for use with various sensors appears to be a useful and controllable workhorse system suitable for LP gun phenomenology investigations. This LP ignition fixture is capable of being adapted to a full gun configuration by mounting a barrel on the front of the main body component, in place of the short barrel extension currently employed. Use of special test fixtures to facilitate exploration of particular LP gun phenomena is a viable avenue. This approach is illustrated in the current program by the use of a transparent injection fixture to examine phenomena associated with injecting bipropellants in an LP gun chamber. Use of a computer based firing and timing system has been shown to be particularly beneficial to LP gun phenomenology investigations. Use of transparent high-pressure resistant windows both in the LP gun chamber and barrel is advantageous in that is enables phenomena to be visualized sequentially as it moves form the chamber to the barrel; reverse interactions can also be examined. Preliminary LP ignition test firings have revealed what appear to be the first instances of significant traveling charge phenomena in an LP gun system.

Descriptors :   *GUNS, *LIQUID GUN PROPELLANTS, BASE LINES, BIPROPELLANTS, COMBUSTION, COMPUTERS, DETECTORS, DIAGNOSIS(GENERAL), DYNAMIC LOADS, EXPLOSIVE CHARGES, FIRING TESTS(ORDNANCE), GUN CHAMBERS, IGNITION, INSTRUMENTATION, INTERACTIONS, INTERNAL COMBUSTION ENGINES, OPERATION, RESISTANCE, REVERSIBLE, TEST FIXTURES, TIMING DEVICES, TRAVEL, WINDOWS, TEST METHODS

Subject Categories : Guns

Distribution Statement : APPROVED FOR PUBLIC RELEASE