DNW Aero

Low-Speed Tunnel

The low-speed wind tunnel (LST) in Marknesse is an industrial wind tunnel for the low-speed domain

Type of wind tunnel

Continuous, atmospheric, low-speed wind tunnel with exchangeable test sections

Main Features

Test section

  • 3.0 m x 2.25 m with turntables in top and bottom wall for 2D testing
  • 3.0 m x 2.25 m with overhead balance for 3D testing

Operating range

  • 0 < V < 80 m/s

Model support

  • Six-component overhead balance with wire suspension on strut for 3D models
  • Sting support for models with internal balances
  • Floor support for (half) models

Auxiliary systems

  • Compressed air supply with a capacity of 5 kg/s continuously at 80 bar
  • Remotely controlled y-z traversing system
  • Vacuum system
  • Ground board for simulation of ground effects
  • Tangential blowing for test section boundary layer re-energizing
  • Microphone wall array

Typical tests

  • Two- and three-dimensional model testing
  • Ground effect simulation
  • Dynamic measurements like vibrations or unsteady pressures
  • Turbofan propulsion simulators (TPS) and turbine air motors for propellers
  • Engine simulation
  • Propeller testing
  • Acoustic measurements
  • Environmental tests mainly on models of ships, trucks and building structures
  • Air exhaust simulation with compressed air
  • Air intake surveys



Voorsterweg 31
8316 PR Marknesse
The Netherlands

+31 527 24 8520

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