Accession Number:

ADA224593

Title:

Test Results from a Two-Stage Traveling Charge Liquid Propellant Gun

Descriptive Note:

Technical Report,01 May 1987,30 Sep 1989

Corporate Author:

ARMY BALLISTIC RESEARCH LAB ABERDEEN PROVING GROUND MD ABERDEEN PROVING GROUND United States

Report Date:

1990-06-01

Pagination or Media Count:

32.0

Abstract:

Test data for a 40-mm fractional traveling charge FTC gun system are described. The system consists of a hybrid propulsion method using a solid propellant booster charge and a liquid propellant traveling charge. The purpose of the two stage propellant system was to create a traveling charge gun with a delay mechanism created by a separator piston between the solid and liquid charges. The data showed increased performance when compared to the Mayer Hart model, for projectiles less than 250 grams and charge to mass CM ratios of less than 2. Tests fired at CM greater than 2 with heavy projectiles yielded high pressures in the long liquid charges. The combustion of the second stage of the traveling charge produced waves that were tracked in a space time manner for one of the FTC rounds. The calculated wave speed gave reasonable agreement when compared with estimated sound speeds determined from chamber measurements in other regenerative fixtures.

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE