Development of UMARC (University of Maryland Advanced Rotorcraft Code)The University of Maryland Advanced Rotorcraft Code (UMARC) is a user-friendly, FEM-based comprehensive helicopter rotor simulation code of high numerical robustness and computational efficiency. UMARC formulates the rotor-fuselage equations using Hamilton's principle, and are discretized using finite elements in space and time. The FEM formulation allows the code to analyze a wide variety of rotor designs. Dynamic inflow modeling is used for unsteady wake inflow computations. Predicted stability, response, and blade-load data are validated with experimental data for several configurations, including representative articulated, hingeless, and bearingless rotors.
Document ID
19910032582
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Bir, Gunjit (Maryland Univ. College Park, MD, United States)
Chopra, Inderjit (Maryland, University College Park, United States)
Nguyen, Khanh (NASA Ames Research Center Moffett Field, CA, United States)