Outboard Waterjet Propulsion Development

Period of Performance: 09/30/1998 - 09/30/2000


Phase 2 SBIR

Recipient Firm

Vehicle Development, Inc.
1488 Cherry Garden Lane
San Jose, CA 95125
Principal Investigator

Research Topics


This effort will produce three outboard waterjet propulsion units, two sets of spare parts, a Combat Rubber Raiding Craft (CRR-L), Waterjet optimization tests, comparison tests in compliance with a GFI test plan, test reports, and a final program report. One of the waterjets will use a contractor selected engine and the other two will use MARS-35 engines. The objective will be to provide comparison data to permit evaluation of the reflex waterjet system compared to existing propeller drives. It is believed that the waterjet will offer advantages in size, weight, and noise, thermal and magnetic signatures. It is necessary to confirm that these advantages can be achieved without a serious compromise in propulsive performance. Tests of a previous larger waterjet of the reflex configuration provided performance comparable to propellers. This program should confirm that the smaller waterjet will retain that level of performance. The simple mechanical design should contribute to excellent reliability and easy maintainability. All of the parts of the waterjet itself are highly resistant to salt water and the problems related to immersion.