The Rotor Test Rig facility is especially designed to test rotorcraft technology in the Large Low-speed Facility (LLF) of the German Dutch Wind Tunnels (DNW) in the Netherlands. Tests can also be performed at the DLR Institute of Flight Systems in Braunschweig in a dedicated rotor test hall.
Main Feature
Other Test of rotorcraft main rotors with a diameter up to 4.2 m
• Hingeless or fully articulated rotor hubs with 4 or 5 blades
• Tail rotor system
• Hydraulic driven main and tail rotor (190 kW / 12 kW)
• Variable rotor speed and sense of rotation
• 6-component main rotor and fuselage balance
• 2-component tail rotor and stabilizer balances
Auxiliary Feature
Other • Hydraulic actuators for higher harmonic control (HHC)
• Simple and reliable blade pitch actuation system based on HHC, to also allow full individual blade control (IBC) capability
• Data acquisition triggered to main or tail rotor azimuth (300 channels, data rate of up to 2048/revolution)
• Sensors for blade angles, dynamic blade surface pressures, blade bending moments, pitch link loads, actuator forces, rotor loads, fuselage surface pressures, and model accelerations
Comment
Other Blades can be tailored to customer needs, including e.g. for blade surface warming for optical transition flow measurements or on-blade actuation systems.