The Lumenier 5x5x3 Butter Cutter propeller is designed for high speed and extreme performance. This unique airfoil provides incredible thrust throughout the entire power-band, and especially the top end. In addition to incredible power potential, the Butter Cutter also has great efficiency. Most high performance propellers suffer from high amp draw to achieve top-end thrust, but the Butter Cutter's advanced airfoil allows for both high performance and good efficiency. These props give you a "locked in" feel while flying and really grip the air while cornering.
The Butter Cutter propellers are made from an ultra-durable, crash resistant polycarbonate material. This allows the propellers to resist breaking in a crash or prop strike. Now you can clip a gate or a tree branch and keep flying! Each blade is 100% balanced direct from the mold as well, giving you a "butter smooth" flight.
FPV Drone Racing and Freestyle flying require high-quality propellers that ensure optimal thrust, efficiency and top-end speed to allow pilots to consistently perform at their best. Lumenier prop design starts from the ground up, considering flight speed, blade RPM and other factors to optimize each profile. Leveraging a proprietary algorithm, each prop has a unique airfoil and blade design, rather than using the same blade and duplicating them on double, triple or quad-bladed props. This leads to subtle, yet important, performance improvements that can mean the difference between a win or a DNF on race day.
During the design of any Lumenier propeller, key elements are considered such as blade RPM, motor size and KV, and overall flight envelope. These inputs create operating points such as Reynolds Numbers, Mach, Beta Angles, etc. which are used to guide the design process.
Given the operating points and design goals Lumenier produces unique airfoils leveraging a proprietary genetic algorithm that iterates 10s of thousands of possible airfoils and compares them to each other and also a library of well known existing airfoils. This creates the best possible and most suitable combination of airfoils as well as overall blade design. For this reason, no 2 blades on any Lumenier propeller are the same.