Engineering (CAD/CAE, Simulation) Intermediate Materials OEM Raw Materials Testing / Certification Tooling

Helix‑Carbon GmbH

Helix-Carbon GmbH, founded in 1990 and based in Würselen (near Aachen), is a specialist manufacturer of carbon-composite propellers for aviation, eVTOL, UAV, paramotor and industrial applications. With more than 30 years of experience, the company designs and produces propellers for power ranges from 5 kW up to 250 kW and diameters from approx. 0.75 m to 2.8 m, offering fixed-pitch, ground-adjustable and in-flight adjustable systems. The company holds certification as an EASA-approved production organisation (DE.21G.0126) and has developed bespoke solutions for military UAVs, industrial fans, and high-load machinery applications.

Contact details
Richard Krüger-Sprengel
Founder & CEO

Merzbrück 206, 52146 Würselen

helix-propeller.de/

Design and simulation

Helix performs detailed composite design, CAD modelling and simulation of propeller blades, hubs and full assemblies, including verification of strength, vibration and acoustic behaviour

Materials

Use of advanced carbon fibre reinforced composite materials, including carbon/kevlar blends, bespoke moulded parts, leading-edge protection and sandwich structures for high-performance blades.

Machinery and tooling

Production of moulds and tooling for composite parts (propeller blades, hub assemblies), including high-precision jigs and finishing tools tailored for composite lay-up and curing.

Production

Manufacture of carbon-composite propellers covering diameters from around 0.75 m up to 2.8 m for ultralights, paramotors, trikes, gyrocopters, eVTOLs; both fixed-pitch and adjustable systems (hydraulic/electric).

Process optimization and consulting

Helix supports special projects (custom propeller systems, eVTOL development, noise-reduced fans) and collaborates with research institutions for innovation in propeller tech and manufacturing.