One of the main factor that cause for helicopters to be loud and shake is due to the rotor piece. The rotor piece is the piece allows for the proper functioning propellers. Airbus Germany has been able to capitalize on their idea of enhanced rotors to be albe to reduce the noise of the rotor along with the turbulence feeling upon launching. The companies that are involved with the innovations are German Aerospace Centre (Deutsches Zentrum für Luft- und Raumfahrt; DLR with the help of Airbus Helicopters Deutschland. Both companies have joined forces to build a simulation with a 5-winged prototype in a handmade wind tunnel. This tunnel was their tool to be able to measure the difference from regular rotors to their newly enhanced creation. The Tunnel technology is known as SKAT (Scalability and risk minimization of technology).
Their solution for their enhanced wing performance they have developed the “fixed wing.” This wing will allow for the entire aircraft to be able to take off vertically and stay in a stationary position. The Active rotor will enhance many aspects on enhancing its ability to increase the ,” source of the lifting force and propulsion on the helicopter, also creates a series of aeroelastic and aeroacoustic problems such as high levels of vibration and the generation of a great deal of noise. While vibrations generally have a negative impact on passenger comfort and the durability of components, the rotor noise plays a particularly key role in landing approaches over populated areas.
During simualtions in the tunnel the noise with the fixed wing reduced the noise by 3 decibels. The top speed the helicopter was able to hit was 270 kilometers ( 167.8 ).
This latest innovation is the beginning of great things to come for both companies and their journey to create silent aircrafts.
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