In a move to achieve more efficient, quieter and environmentally
friendly aircraft compared to a conventional one, the US space agency has
unveiled plans for an electric-powered airplane designated as X-57.
With 14 electric motors turning propellers and all of them
integrated into a uniquely-designed wing,Nasa will test the new propulsion
technology using X-57 which has been nicknamed "Maxwell".
"With the return of piloted X-planes to Nasa's research
capabilities - which is a key part of our 10-year-long New Aviation Horizons
initiative - the general aviation-sized X-57 will take the first step in
opening a new era of aviation," A Nasa administrator Charles Bolden said
while addressing at the annual 'Aviation 2016' event in Washington, DC, on
Friday.
The name "Maxwell" is given to honour James Clerk
Maxwell, the 19th century Scottish physicist who did groundbreaking work in
electromagnetism.
As part of a four-year flight demonstrator plan, Nasa's"Scalable Convergent Electric Propulsion Operations Research" project
will build the X-57 by modifying a recently procured, Italian-designed
"Tecnam P2006T" twin-engine light aircraft.
Its original wing and two gas-fueled piston engines will be
replaced with a long, skinny wing embedded with 14 electric motors - 12 on the
leading edge for take offs and landings, and one larger motor on each wing tip
for use while at cruise altitude.
Nasa hopes to validate the idea that distributing electric power
across a number of motors integrated with an aircraft in this way will result
in a five-time reduction in the energy required for a private plane to cruise
at 175 mph.
"Maxwell" will be powered only by batteries,
eliminating carbon emissions and demonstrating how demand would shrink for
lead-based aviation fuel still in use by general aviation.
Energy efficiency at cruise altitude using X-57 technology could
benefit travelers by reducing flight times, fuel usage, as well as reducing
overall operational costs for small aircraft by as much as 40 percent.
Typically, to get the best fuel efficiency an airplane has to
fly slower than it is able. Electric propulsion essentially eliminates the
penalty for cruising at higher speeds.
The X-57 number designation was assigned by the US Air Force,
which manages the history-making process, following a request from Nasa.
The first X-plane was the X-1 which in 1947 became the first
airplane to fly faster than the speed of sound.
"Dozens of X-planes of all shapes, sizes and purposes have
since followed - all of them contributing to our stature as the world's leader
in aviation and space technology," said Jaiwon Shin, associate
administrator for Nasa's Aeronautics Research Mission Directorate.
"Planes like the X-57, and the others to come, will help us
maintain that role," he added.
The X-57's electric propulsion technology is expected to
significantly decrease aircraft noise, making it less annoying to the public.
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