Multicopter propellers aircraft propeller offering

The Multicopter propellers is a multicopter propeller from Mejzlik with a mass of 18 g and a diameter of 304.8 mm. Mejzlik multicopter propellers are carbon fibre propellers for multirotor and VTOL aircraft, made by Mejzlik Propellers in Brno, Czech Republic. They are fixed-pitch rotors that convert motor shaft power into thrust for heavy-lift multicopters, hybrid VTOL airframes and drone-in-a-box platforms, and they are sold as off-the-shelf sizes with the option of custom designs.

The range is organised by purpose. The multicopter series (MC) covers two-blade and three-blade propellers, and further variants are marked HD for heavier loading, VTOL for propellers used in vertical lift on fixed-wing hybrids, and D-Box for the largest diameters. Folding multicopter propellers are listed separately, in puller and pusher versions, for aircraft that need the blades stowed in forward flight. Sizes are designated by two figures, diameter and pitch, followed by the blade count and the rotation: for example 28x9.4 2B MC HD or 40x13.3 3B MC. Fixed multicopter sizes in the maker's lists run from 12x3.8 to 80x28, folding sizes from 14x4.5 to 34x12.6, and each size exists in clockwise (CW) and counter-clockwise (CCW) versions so that a multirotor can use both directions on its arms.

For an integrator, the figures that matter are published in per-size data sheets with measured or simulated data and, for many sizes, performance tables. The maker states that its portfolio of off-the-shelf propellers exceeds 200 types, and that the data cover the thrust and power behaviour needed to match a propeller to a motor. Mejzlik also publishes propulsion system data and propeller calculators for combining propeller and motor choices. The part list marks each size as off-the-shelf (OTS) or available on demand.

Integration depends on the motor and the hub: the propeller is selected for the motor power, the rotational speed and the thrust required at the vehicle mass, and the mounting arrangement is matched to the motor. Custom propellers are offered from prototype to mass production, with in-house calculation software used before manufacture, followed by tooling and prototyping.

On quality, the maker states that it is ISO 9001 certified, that every propeller goes through quality control, and that support is available for customers who want the platform certified. Simulation, production and testing take place at the same site in Brno.

Typical applications are heavy-lift cargo and utility multicopters, survey and inspection drones, VTOL fixed-wing and hybrid aircraft, and automated drone-in-a-box systems.