Boeing, Rolls-Royce, RUAG Aerospace and Deharde Maschinenbau are
talking about a collaborative research agreement to explore
the potential of fuel-efficient open-fan (open rotor) propulsion
technology for future commercial airplanes.
Using technologies and techniques contributed by each of the
parties, tests of a model concept airplane with open-fan engines
are planned for early in 2010 at the RUAG Low Speed Wind Tunnel in
Emmen, Switzerland. A unique propulsion and measurement system is
to be integrated into the model.
"Open-fan propulsion technology has potential for reducing
specific fuel consumption significantly below current turbofans,"
said Michael Friend, Boeing director of Technology in Germany.
"While Boeing has made no decisions as to the type of propulsion
system or propulsion supplier for any potential future commercial
airplane, this investigation will help us to better understand the
interaction of open-fan propulsion with a candidate airframe
concept, and how much fuel savings might be possible."
Rolls-Royce is providing propulsion design expertise from
facilities in the UK and Germany, while Boeing is designing the
integrated wind tunnel model airframe. The wind tunnel model will
be manufactured by Deharde Maschinenbau of Varel, Germany. The
model will utilize RUAG expertise in Counter-Rotating Open Rotor
engine simulation.
"This research is an example of how we partner with technology
leaders in Germany, Europe and around the world to investigate ways
of reducing the environmental footprint of our next generation
products," said Lianne Stein, president of Boeing Germany.
"Rolls-Royce is delighted to be working with Boeing to
investigate possible power solutions for future generations of
aircraft," said Ric Parker, director, Research and Technology at
Rolls-Royce. "Open Rotor engines provide an opportunity to make a
step change in efficiency for narrow body aircraft and this
research will help underpin future full scale demonstration and
point the way for future developments."
"Deharde has extensive expertise in windtunnel model design,
manufacturing, system integration and onsite support in the
windtunnels of Europe," said Holger Hoffmann, managing partner of
Deharde Maschinenbau. "As a dedicated small/medium enterprise we
are excited to be a partner in this challenging global technology
project with our expertise and know-how."