CFD, Lower-Order Modeling and Measurements towards Advanced Inflow Models for Single and Coaxial Rotors
Abstract
There exists a very limited body of research with respect to the fluid dynamics of the rotor wake interacting with a static or a dynamically moving ground plane, affecting the rotor wake and hence also the inflow distribution and flight dynamics. However, understanding these aerodynamic effects is critical to develop and validate inflow models for such complex flight conditions, because these models rely on a significant amount of assumptions. Similarly, there exist no validated inflow models for coaxial contra-rotating (CCR) rotors. Therefore, higher-order CFD simulations combined with measurements will be performed to derive advanced inflow models, validate them by experiments, and apply them to lower-order comprehensive analysis codes and flight dynamics simulations. This will also enable more accurate predictions of rotocraft motion and handling qualities, and so more realistic pilot training in flight simulators for advanced configurations with CCR rotors and/or in complex flight conditions such as in time-varying ground effect.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Oct 22, 2018
- Source ID
- W911NF1710579
Entities
People
- Juergen Rauleder
Organizations
- Army Contracting Command
- Technische Universität Ilmenau
- United States Army