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Lean, Green Flying
Machines Closer To Reality By Jim Douglas |
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April 7, 2011 - Designs that may make airplanes greener
and quieter for future generations are one step closer
to reality with recent NASA contract awards. Four
industry and academic teams will split $16.5 million for
additional research into ideas for aircraft that could
enter service between 2030 and 2035.
NASA refers to this time period as N+3, representing
technology three generations more advanced than what is
in service today. The teams studied the ideas from
October 2008 to April 2010. Under the new contracts, the
teams will develop concepts and models that can be
tested in computer simulations, laboratories and wind
tunnels.
The work is funded by NASA's Aeronautics Research
Mission Directorate in |
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The
program's Subsonic Fixed Wing Project oversees the work at the
agency's
- Boeing
Research, Subsonic Ultra Green Aircraft Research, or SUGAR, $8.8
million, three years
The Boeing
Research & Technology award continues the work of the SUGAR
Project, which looked at truss-based wing aircraft designs and
hybrid electric engine technology. The new contract will allow
the team to start collecting higher fidelity data on its
concepts.
Under the contract, the team will design, construct and test wind tunnel mockups and computer models of the airplane. The team also will study lightweight materials and engine concepts for even more futuristic planes that could fly between 2040 and 2045.
The MIT
team is moving forward with work on its "double bubble" airplane
design. Its concept is a dual fuselage, two partial cylinders
placed side by side, that would create a wider structure than
the traditional tube-and-wing airliner.
The team will develop the technologies identified during the first study and build a model for testing. MIT also will explore the challenges of high-efficiency, small-core engine technology - the idea that it is not necessary to increase an engine's size to increase efficiency in delivering power. |