Investigation of Bulk-Loaded Liquid Propellant Gun Concepts.
Final rept. Jun 93-Nov 95,
VERITAY TECHNOLOGY INC EAST AMHERST NY
Pagination or Media Count:
The approach of using chamber geometry in the forms of stepped-wall and multichambers in conjunction with using a repeatable igniter was investigated as a means for controlling the interior ballistic variability in 20-mm and 30-mm bulk-loaded liquid propellant guns BLPGs. Full-scale, gun firing tests were conducted using the liquid monopropellant XM46 to experimentally develop a database for assessing the utility of these mechanical control concepts. The 3O-mm gun test data indicate that a useful degree of control of both the pressure-time trace shape and the projectile muzzle velocity may be achieved by using either a stepped-wall or a multichamber geometry, and that a useful degree of ballistic repeatability can often be achieved, even in a nonoptimized test gun. The 30-mm gun test data also indicate that the igniter needs to be tailored to the size and geometry of the input stage of the main liquid propellent chamber to achieve near-optimal ballistic repeatability.
- Ammunition and Explosives
- Combustion and Ignition