NASA Technical Reports Server (NASA) · 1980 · 388 citations · 4 references
Open access
EngineeringAerospace EngineeringMechanical EngineeringAerodynamicsComputational Fluid DynamicsFluid DynamicsAerodynamic TestingAirfoil TheoryComputational AerodynamicsExperimental AerodynamicsRotorcraft AerodynamicsRotordynamicsHover AerodynamicsMach NumberRotor AerodynamicsRotor Blade AerodynamicsRotor Blade LoadsRotor Performance AnalysisSupercritical FlowTransonic Flow
A benchmark test to aid the development of various rotor performance codes was conducted. Simultaneous blade pressure measurements and tip vortex surveys were made for a wide range of tip Mach numbers including the transonic flow regime. The measured tip vortex strength and geometry permit effective blade loading predictions when used as input to a prescribed wake lifting surface code. It is also shown that with proper inflow and boundary layer modeling, the supercritical flow regime can be accurately predicted.
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