![]() ![]() With these validations as the foundation, this work then simulates one MTB rotor in hover, and further compares with wind tunnel test data as the confirmation of the CHARM parameters. These comparisons can help to validate CHARM results, provide a better understanding of simulated flight characteristics, and demonstrate its predictive capability. This report first examines CHARM’s capability by comparing its predictions to the UH-60A Black Hawk rotor and SUI Endurance rotor experimental test results in hover and forward flight conditions. CHARM allows the user to define flow and body characteristics, including the rotor geometry, aerodynamic condition, wind tunnel speed, and airfoil tables as inputs. The CHARM software is capable of modeling Vertical Take Off and Landing (VTOL) aircraft aerodynamics in maneuvering and steady flight conditions. This work focuses on the importance of aerodynamic interaction between MTB rotors using the Comprehensive Hierarchical Aeromechanics Rotorcraft Model (CHARM) software, developed commercially by Continuum Dynamics, Inc. ![]() The MTB is assembled and tested in the U.S Army’s 7- by 10-Foot Wind Tunnel. The MTB is a modular multirotor that can make testing feasible for up to six rotors at different angles and rotor arrangements, including tall and short configurations at different horizontal and vertical distances. ![]() The Multirotor Test Bed (MTB) project was initiated at NASA Ames Research center to support the NASA Revolutionary Vertical Lift Technology (RVLT) Project to study rotorcraft performance specifically for multirotor aircraft. The new designs of aerial vehicles are coming one after another but often neglecting the aerodynamic characteristics and the effect of interacting rotors. Urban air mobility as a fast transportation solution has captured the attention of private companies and government aviation departments in the 21st century. ![]()
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