Electromagnetic launchers are being developed for such applications as launching torpedoes, remotely piloted vehicles, and high velocity projectiles. The main driver is the reduction of the noise generated during the present torpedo launch evolution. The technology for any mobile applications and some stationary applications will require a high energy density power source. The power source must provide the electrical power in close proximity to the launcher to reduce the losses associated with high currents in electrical conductors and the EMI. Proton exchange membranes (PEM) fuel cells have demonstrated on a small scale the ability to provide very high pulsed electrical energy in small light weight packages. The Treadwell corporation has demonstrated some innovative concepts and the pulse capability of the fuel cell power source. Treadwell has designed and is presently constructing a closed loop 1kW fuel cell system for an unmanned autonomous underwater vehicle which produces direct current electrical power from the controlled reaction of reducing and oxidizing agents. This application utilizes pressurized hydrogen and oxygen as the reactants to maximize energy density. Treadwell has also tested our inhouse laboratory fuel cell in the pulsed mode. Producing 200 microsceond, 450 ampere pulses for up to 2 hours.
