Modeling the Coupled Rotor/Fuselage Response of the H-3 Sea King Utilizing the NPS Full Nonlinear Response

摘要

Adapting the Naval Postgraduate School full nonlinear simulation model of coupled rotor/fuselage response to the 11-3 Sea King, the concentration of this work rests on validating the rotor simulation against an actual rotorcraft. The parameters of the 11-3 from the characteristic equation of a modeled mass-spring- damper system are inputted into a five-bladed model initially utilizing MAPLE to process LaGrange's equation defining the helicopter's full set of nonlinear equations of motion. Results are converted to MATLAB and are then processed in SIMULINK returning time history plots of blade/ fuselage motion. Conclusions are in accordance with literature of Coleman, Fein old and Deutsch.