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DLR makes rotor noise and vibration advances with Airbus Germany

DLR makes rotor noise and vibration advances with Airbus Germany

Under some operating conditions, rotors are the main source of noise produced by a helicopter. To reduce this noise and the simultaneous vibrations, the German Aerospace Centre (Deutsches Zentrum für Luft- und Raumfahrt; DLR), together with Airbus Helicopters Deutschland, has tested active rotor control on a modern, five-blade rotor in a wind tunnel as part of… Read more »

Source: DLR, 01-Aug-17

NASA and DLR to continue helicopter aerodynamics cooperation

NASA and DLR to continue helicopter aerodynamics cooperation

The US aerospace agency NASA and the German Aerospace Center (Deutsches Zentrum für Luft- und Raumfahrt; DLR) have signed two agreements on further scientific cooperation in the aeronautics sector. Both partners want to work together on the research topics of aircraft noise simulation and the improvement of helicopter aerodynamics. The agreements were adopted at the… Read more »

Source: DLR, 18-Jun-15

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DLR researchers make big step towards helicopter noise reduction

DLR researchers make big step towards helicopter noise reduction

Researchers from the German Aerospace Center (Deutsches Zentrum für Luft- und Raumfahrt; DLR) based at Göttingen and Braunschweig have succeeded for the first time in visualising the main cause of what makes helicopters so noisy while in the air. To do this, they conducted at times daring in-flight experiments – most recently in a quarry… Read more »

Source: DLR, 26-Jan-14

DLR tests effect of blowing air out of rotor blades

DLR tests effect of blowing air out of rotor blades

Researchers at the German Aerospace Center (Deutsches Zentrum für Luft- und Raumfahrt; DLR) in Göttingen have discovered a way to make helicopters more manoeuvrable. In a globally unique wind tunnel experiment, they have been blowing air through holes in the rotor blades to actively influence airflow. As though someone is wielding a sledgehammer The rotor… Read more »

Source: DLR, 12-Feb-13

Helmet mounted display for safer helicopter flight

Helmet mounted display for safer helicopter flight

Helicopter flights and landings in poor visibility conditions always present pilots with special challenges. The German Aerospace Center (Deutsches Zentrum für Luft- und Raumfahrt; DLR) has now completed a series of tests with a new helmet mounted display and has brought it into use a flight simulator. In future, this display will assist helicopter pilots… Read more »

Source: DLR, 06-Mar-12

Humpback whale secret may help helicopters fly faster

Humpback whale secret may help helicopters fly faster

Modern helicopters could be significantly faster and more manoeuvrable – if aerodynamics did not impose limitations on them. Researchers at the German Aerospace Center (Deutsches Zentrum für Luft- und Raumfahrt; DLR) in Göttingen have now discovered and flight-tested a way to increase manoeuvrability using an idea they got from observing humpback whales. Unwanted turbulence Helicopters… Read more »

Source: DLR, 01-Feb-12

DLR and NASA join forces to make future helicopters quieter

DLR and NASA join forces to make future helicopters quieter

A helicopter relies on its rotor to be able to take off and land vertically. The rotor is also responsible for the noise a helicopter makes during flight. Researchers at the German Aerospace Center (Deutsches Zentrum für Luft- und Raumfahrt; DLR) in Göttingen and NASA are investigating the exact origin of this rotor noise. The… Read more »

Source: DLR, 13-Apr-11

DLR on the way to the silent helicopter

The FHS (Flying Helicopter Simulator) Helicopters do not have to be loud. This is the conclusion of scientists at the German Aerospace Center (Deutsches Zentrum für Luft- und Raumfahrt; DLR) working on the FRIENDCOPTER project.

Source: Rotorhub, 09-Dec-09

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DLR tests new helicopter control system: successful first flight with two active sidesticks

DLR tests new helicopter control system: successful first flight with two active sidesticks

The use of two active sidesticks and the resulting total replacement of the conventional helicopter control system are new. In 2007, DLR tested the right-hand sidestick in flight and is now setting new benchmarks with the first flight to use two sidesticks.

Source: DLR, 05-Nov-09

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