Propulsor Hydrodynamics and Hydroacoustics
This program explores science and technology (S&T) related to the physics of fluid flow around propulsors to improve the Navy’s propulsor design capability for improved stealth, efficiency and mobility. The long-term vision of this program is to provide the ship and submarine communities with quiet, efficient and affordable propulsor concepts (options) and capabilities (knowledge base and computational tools and methods) that would meet the emerging mission requirements through: development of the knowledge base of the governing physics; development of accurate, reliable and robust predictive/simulation tools and methods for propulsor design and performance analyses; and the exploration and demonstration of novel propulsor concepts at laboratory scale.
This work supports the Navy’s interest in advanced sea platform performance S&T, advanced sea platform survivability S&T, submarine S&T and naval engineering.
Research Concentration Areas
- Provide the technical foundation necessary to develop new and novel propulsor concepts for the U.S. Navy’s next generation of warships/platforms with stealth superiority
- Significantly reduce/eliminate the cavitation on propeller/propulsor and appendages and its detrimental effects (radiated noise, material erosion, hull vibration, efficiency loss) through understanding and control of cavitation dynamics (inception, growth and collapse)
- Understand the interaction of turbulence and propulsors that would generate vessel-radiated noise and develop passive, mitigation strategies
Research Challenges and Opportunities
- Develop accurate propulsor model in conjunction with vehicle dynamics (maneuvering and seakeeping), including extreme maneuvers such as crashback operations
- Develop foundational advances in high-fidelity, computational prediction methods and experimental measurement methods of cavitation dynamics (inception, growth, collapse)
- Develop knowledge base and predictive capability of radiated sound mechanism due to ingested turbulence by propulsors
- Explore and demonstrate at lab-scale novel propulsor concepts that would improve efficiency and stealth
Type of Funding Available
- Basic Research
- Applied Research
Program Contact Information
Submit white papers, QUAD charts and full proposals for contracts to this email address: ONR Code 33 Research Submissions
Follow instructions within BAA for submission of grant proposals to grants.gov website.