Reduced-order Modeling of Rotor-Airwake Aerodynamic Coupling Navy SBIR FY2010.3 Sol No.: Navy SBIR FY2010.3 Topic No.: N103-195 Topic Title: Reduced-order Modeling of Rotor-Airwake Aerodynamic Coupling Proposal No.: N103-195-0409 Firm: D&P LLC 3409 N. 42nd Pl. Phoenix, Arizona 85018 Contact: Lei Tang Phone: (602) 957-2868 Web Site: www.d-p-llc.com Abstract: This SBIR Phase I project proposes to develop a reduced-order model (ROM) of rotor-airwake aerodynamic coupling for further incorporation into a real-time flight simulator. A CFD rotor-airwake database will be used to design the reduced-order model. The output of the algorithm is the complete flow field (U, V and W velocities at all grid points) of the domain with rotor positioned at a specified hovering location near a backward-facing step. During this phase, the feasibility of the ROM approach will be demonstrated by comparing the output of the algorithm to data generated by a fully coupled rotor-airwake computation. In the next phase, this approach will be extended to explore the applicability of the method to a helicopter moving through the ship airwake in real-time. Benefits: The developed ROM software product can be used to facilitate the use of CFD in design, optimization, and real-time simulation environments. The improved model of rotor-airwake aerodynamic coupling can improve the fidelity of the flight simulator, the design of helicopter landing path, etc. Return