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- W2071094568 abstract "Modeling of rotor-induced velocity receives continued attention in the literature as the rotorcraft community addresses limitations in thee delity of simulations of helicopterstability, control,andhandling qualities. A comparison is presented of results obtained using a rigid-blade rotor-fuselage model cone gured with two induced velocity models: a conventional, e rst-order, e nite state, dynamic ine ow model and a wake model that solves a vorticitytransport equation on a computational mesh enclosing the rotorcraft. Differences between the two models are quantie ed by comparing predictions of trimmed rotor blade e ap, lag and feather angles, airframe pitch and roll attitudes, cross-coupling derivatives, response to control inputs, and airframe vibration. Results are presented in the context of measurements taken on a Puma aircraft in steady e ight from hover to high speed. More accurate predictions of the cross-coupling derivatives, response to control, and airframe vibration obtained using the vorticity transport model suggest that incorporation of real e owe eld effects is important to extending the bandwidth of applicability of helicopter simulation models. Unexpectedly small differences in some of the trim predictions obtainedusing thetwo wakemodelssuggest thatanoverall improvement in simulatione delity may notbeachieved without equivalent attention to the rotor dynamic model." @default.
- W2071094568 created "2016-06-24" @default.
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- W2071094568 date "2000-07-01" @default.
- W2071094568 modified "2023-09-26" @default.
- W2071094568 title "Comparison of Induced Velocity Models for Helicopter Flight Mechanics" @default.
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- W2071094568 doi "https://doi.org/10.2514/2.2644" @default.
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