Patent ID: 7089842
Filing Date: 2006-08-15
Classification: F41F,F41H

Abstract:
1. A method of operating a marine vessel countermeasure system for launching a zero-twist, self propelled countermeasure cartridge from a substantially vertical launch tube rotatably mounted about an axis on a base and the launched countermeasure is set on course by a lateral pitch of the cartridge to a predetermined azimuth, comprising: calculating the azimuth course for the launch of the countermeasure cartridge; calculating the range for deployment of the countermeasure payload; rotating the launch tube to the calculated azimuth course; inputting a pitch value to set the cartridge to the deployment range; launching the cartridge vertically out of the launch tube with zero-twist; and pitching the cartridge to the calculated deployment azimuth after vertically clear of the launch tube.