A Methodology for Comparing the Range Performance of Chemically Fueled Submersibles

Presents a simple, general method for readily comparing the performances of chemically powered submersibles. Particularly useful in the preliminary design phase, the methodology permits quick assessemnt of the effects on vehicle range of variations in vehicle, engine, and reactant parameters. Criteria are given for determining when the system is weight or volume-limited. The application of the methodology is illustrated for a submarine displacing 10,000 cubic feet, showing the extended cruise range of a dual-engine system with one engine designed for high speed, the other for low speed. The sensitivities of the cruise and dash ranges to variations in design parameters are illustrated. The paper also discusses the effects of various system parameters on the criteria determining whether the vehicle is weight- or volume-limited for vehicles displacing 10,000 cubic feet and 20 cubic feet.