An unmanned minehunting vehicle developed by Lockheed Martin showed improved reliability in tests, moving it a step closer to use on U.S. warships. This information came right from a Navy spokesperson. An improved version of the Remote Minehunting System went through 850 hours of testing, clearing the road for 10 weeks of development and operational [...]
RELATIONSHIPS FOR SELF PROPELLED UNDERWATER VEHICLES IN STEADY MOTION - by Calvin A. Gongwer ABSTRACT A method is given for estimating propulsion performance for underwater vehicles in which the effect of the vehicle wake is taken into account. Computation charts for use of designers are included. The method is generalized so that it is applicable to [...]
A DIRECTIONAL SCREEN SYSTEM FOR REVERSIBLE MARINE THRUSTERS - by Calvin A. Gongwer Introduction Marine vehicles, from large ships to umbilically controlled underwater robots (ROV’s) and small submarines, use ducted propeller thrusters to control their position and attitude and, except for the ships and some submarines, to provide their main propulsion. These thrusters have [...]
RELATIONSHIPS FOR SELF PROPELLED UNDERWATER VEHICLES IN STEADY MOTION - by Calvin A. Gongwer ABSTRACT A method is given for estimating propulsion performance for underwater vehicles in which the effect of the vehicle wake is taken into account. Computation charts for use of designers are included. The method is generalized so that it is [...]
STATIC TESTING OF UNDERWATER THRUSTERS - by Calvin A. Gongwer ABSTRACT Acceptance testing of thrusters involves static thrust measurements. Various static thrust measuring systems are shown. Thrust balance types include: parallelogram, bell crank, vertical beam, direct hanging, direct weighing, floating lateral, rolling lateral, and sliding lateral. The principle of null positioning to insure accuracy [...]
