Robert J Radkiewicz

US Patent:

H1103, Jan 7, 1992

Filed:

Jul 15, 1991

Appl. No.:

7/731212

Inventors:

Robert E. Kasten - Moline IL
Robert J. Radkiewicz - East Moline IL

Assignee:

The United States of America as represented by the Secretary of the Army - Washington DC

International Classification:

F41A 2504

US Classification:

89 4301

Abstract:

The invention provides an improvement in a conventional recoil system comsing a piston-cylinder arrangement, wherein a piston driven by recoil energy forces hydraulic fluid out of the cylinder through an orifice to dissipate recoil force. The invention provides an additional flowpath for hydraulic fluid, which contains a servo valve for controlling the pressure in the cylinder so that the desired recoil peak pressure/time curve can be achieved for any firing impulse. The invention also includes sensors for measuring hydraulic fluid pressure and the initial velocity of the recoiling parts imparted by the firing impulse, and a controller means including a microprocessor for calculating or determining the desired peak pressure based on this initial velocity and available recoil distance and transducers for measuring any variation of pressure from the desired peak pressure and applying an appropriate voltage to the servo valve to control the pressure and achieve the desired peak pressure during the recoil cycle.