5" Triple Blade Propeller 5051TCS (Triple Crane Style)
The Racekraft 5051 is designed from the ground up to maximize efficiency at high rates of speed. Custom Computational Fluid Dynamics (CFD) programs were developed to design the RK 5051. A Vortex Lattice Method was used to develop the flow around the propeller which performance estimates can be derived from. Viscous effects are accounted for using airfoil 2D section data gathered from NACA databases or derived from using 2D airfoil programs such as XFOIL. A design for maximum efficiency is ensured by manipulating blade geometry to meet the Betz condition. Betz condition requires each shedding vortex at each station along the blade needs to shed off as a perfect helical screw. This condition allows convergence on one blade geometry for one design point. Our CFD program takes in inputs to produce the geometry of the propeller. These inputs are speed of the multirotor, RPMs, Power, angle incidence with the flow, number of blades, and diameter. The optimum geometry from the program is then inputted into a CAD software and a 3D solid model is drawn.
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