Modular Efficient Electric Propulsion for Small Inflatable Boats
Abstract
WHOI proposes to develop and prove key technologies and undertake a performance modeling study for a modular hybrid-electric propulsion system for a Zodiac MilPro FC470. Theconceived system must meet various performance criteria for speed and range and be able to operate at both high and low speed while standing up to rugged field conditions andrequirements for in water assembly and redundancy. We propose a contra-rotating propeller propulsion system that will be evolved from existing WHOI subsea vehicle thruster technol"ogy paired with a waterproof, pressure tolerant lithium-ion battery system. This system will also potentially add a commercial off t"he shelf generator to enable a hybrid system for use during training or long distance missions. We propose a two phase approach. Pha"se 1 will focus on technology development system modeling and technical risk reduction while a Phase 2, if later awarded, will focus"" on system integration, system level testing, and ruggedization. Specific deliverables for each phase include:Phase 1 (applied rese"arch): A prototype propulsor unit with full characterization of power and efficiency. A battery trade study and conceptual design for the modular battery packs. Pressure testing of WHOI designed waterproof packaging for batteries. A projected range and speed analysis for a small boat hull identified by the ONR based on the experimental result from the prototype propulsor and the battery" trade study. This will include the four cases specified in the ~Performance Goals~ section, as well as general range and speed curv"es. This study will also compare the system to a 35HP MFE outboard with 6 gallons of fuel. Specific recommendations for including a liquid hydrocarbon fuel based hybrid solutionusing a commercial off the shelf generator.Phase 2 (development ~ future proposal): A fully functional electric boat with a hybrid liquid fuel generator conforming to the projected range and speed from Phase 1 and conforming to the design goals listed above including a control station and emergency rudder mechanism. Development of a hydro-dynamically optimized propeller and shroud for the propulsor. A test report documenting range and speed for the full system.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Sep 29, 2017
- Source ID
- N000141712863
Entities
People
- Carl Kaiser
Organizations
- Office of Naval Research
- United States Navy
- Woods Hole Oceanographic Institution