Wind Tunnel Propellers

We design and manufacture our own ground-adjustable and electric constant-speed propellers for wind tunnel systems, available in 3, 4 and 5-blade configurations, in a wide range of sizes and setups.

They are used by industrial research labs, automotive wind tunnels, vertical wind tunnels for skydiving and sports research, and industrial fan applications, among others.

Sizes range from 2 metres up to 5 metres in diameter, and each project is typically custom-built to the client’s specifications. We apply the same aviation propeller technology and engineering, ensuring outstanding safety factors throughout, and every blade is tailored to the purpose and performance requirements of its application.

These propellers can also be evaluated for other applications: contact us to discuss your project.

Engine-driven propeller in a galvanised steel cage on a test frame, blowing towards a sloped glass and steel wall fitted with water spray bars — A huge 4-meter three-blade wind machine propeller, designed for static use to simulate different wind speeds in industrial testing to ASTM standards.

Engine on a galvanised steel frame behind a mesh-caged propeller, facing a tall inclined glass wall outdoors under a blue sky — This propeller operates at various RPM settings, while special equipment throws ice, water, small rocks and sand into the airflow. The blades feature metal protection and a special coating.

View from inside the test chamber through the glass wall, with two technicians checking sensors and the caged propeller and engine outside — A spectacular view through the industrial windows during the tests.

Three-blade propeller with grey blades and an aluminium hub mounted on a blue electric motor inside a circular steel duct — Our smaller three-blade propeller, electrically driven, designed for an ASTM test laboratory.

Ducted fan seen from the front, with a grey three-blade propeller on a blue electric motor held by a steel frame — A clear view of the monolithic hub, with one blade still to be fitted. Blades can be installed and removed quickly, safely and easily during installation or maintenance, an aviation technology also highly appreciated by industrial operators.

Three-blade propeller spinning inside a circular steel duct, the blades blurred by motion — Engine run-up during dynamic balancing.

Technician on a ladder fitting a grey propeller blade to the hub of a blue electric motor inside a large steel duct — Blade installation in progress.

Close-up of grey propeller blades and a pointed spinner in front of a blue electric motor — Installing the spinner reduces noise and optimizes the airflow.

Yellow, green and orange propeller blades standing upright on a workbench next to an aluminium three-blade hub — Custom-coloured blades on a monolithic hub, built for an engine maintenance shop’s test bench.

Three-blade propeller with one green, one yellow and one orange blade and a white spinner on a workshop stand — The three-blade propeller assembled with its spinner.

Grey machined hub plate with a central bore and bolt holes resting on a wooden bench — A machined hub plate.

Two grey machined hub plates with central bores and bolt holes lying side by side on a wooden board — The two halves of a four-blade hub, ready for assembly.

Close-up of an aluminium propeller hub with a carbon fibre backplate and grey blade roots on a stand — A three-blade propeller during balancing.

Large white multi-blade propeller on a workshop trolley with two people beside it for scale — Four-blade ground-adjustable propeller, 330 cm in diameter, during initial balancing.

Large white propeller with wide blades on a workshop trolley, with a technician standing next to it — For this specific project, built for parachute training simulators, the propeller RPM and size matched those of the Rotol 100046 used on the Spitfire. We rebuilt the Rotol 100046 exactly, with squared tips as the only difference, and the performance results were outstanding. We love mixing vintage and modern technology.

Six-blade propeller with black and white striped blades and a red hub cover on a green stand — Six-blade coaxial propeller for a vertical lift platform, developed for tomorrow’s industry.

Six-blade propeller with black and white striped blades seen from above on the workshop floor — The hubs of this six-blade project combine forged carbon and aerospace-grade aluminium, driving low-inertia natural composite blades: a highly innovative and unusual system.

Galvanised steel test stand with a mesh safety cage and a propeller, outdoors in front of an industrial building — A propeller test stand with its safety cage.

Engine mounted on top of a galvanised steel test stand, in front of a mesh safety cage — The engine mounted on the test stand.

Grey three-blade propeller mounted on a vertical stand in a white room — A three-blade propeller on its stand.