C++ classes for representing propeller geometry / by David Hally. : D68-6/177-2013-1E-PDF

To satisfy the need for high fidelity representations of propellers for use in Reynolds-averaged Navier-Stokes (RANS) flow solvers and other propeller applications, a library of C++ classes has been developed. It provides classes representing the surfaces of the propeller blades, hubs and ducts in fully differentiable form. The propeller blades can be defined using the traditional method of specifying the blade section shape, chord length, pitch, skew and rake at a series of radial sections. More general blade shapes are also possible provided that they conform to fairly loose requirements on the blade parameterization. Simple cylindrical and cigar-shaped hubs can be defined as well as more general axisymmetric shapes defined from splined offsets. Similarly, propeller ducts can be defined from commonly used duct cross-sections or more general shapes defined from offsets.

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