Furious FPV RageProps have spent hundreds of hours being designed, analyzed, and field tested to provide FPV pilots nothing but top performance for their 5" equipped quads. Rage 5042 props are a standard 5" diameter prop, and weigh in at about 5.9 grams per propeller.
Custom Computational Dynamics Software(CFD) was developed to design these propellers. This CFD uses a Vortex Lattice Method to build up the aerodynamics around a propeller. With the known flow field an optimized design is chosen by creating a perfect helical wake airflow; also known as the Betz condition. This results in a blade geometry efficient at a specified design point (speed, thrust, power, flight angle). This blade geometry often takes on a very steep angle near the hub and shallows out as we move out on the blade. Wing tips are added to the end of the blade geometry to improve efficiency by increasing the effective span of the blade while staying constrained to a specified diameter.
The CFD software provides an optimized blade geometry that is then modeled. With the model the props have been tested for strength of the design using Finite Element Analysis (FEA). FEA shows the stress distribution along the blade during given load conditions. From this we change the airfoil geometry either to strengthen the blade or thin it out to lighten the propeller if already strong enough. This results in a strong propeller design that will not break if you hit a gate or mid air collide. Frequency analysis is also done using FEA to figure out the vibration modes of the propeller. Tweaks are then made with the blade and hub attachment to get the first vibration mode to an acceptable level. The blades are offset forward on the hub slightly to act as a swept back wing. During heavy loads this will the blade to flex open shallowing out the angle of attack effectively increasing the stall range. This gives the propeller a more linear feel throughout its throttle curve.
This product was added to our catalog on November 24, 2017