Yahoo – AFP,
Agnes Pedrero, 9 April 2014
Payerne
(Switzerland) (AFP) - The masterminds of sun-powered plane Solar Impulse
formally unveiled their new aircraft Wednesday, a year ahead of their planned
round-the-world flight.
Solar
Impulse 2 is the successor of the original plane of the same name, which last
year completed a trip across the United States without using a drop of fuel.
"These
two airplanes are the most energy efficient airplanes ever designed,"
pilot Andre Borschberg told a 500-strong audience of officials, sponsors and
diplomats at Switzerland's Payerne airbase.
"The
first plane was a prototype, a flying laboratory," said the former Swiss
Air Force jet pilot.
Solar
Impulse 2 is a bigger, better version of its predecessor, he said, reeling off
the new aircraft's statistics.
The new
plane has a wingspan of 72 metres.
While that
is the same as an Airbus A380, at just 2,300 kilos, Solar Impulse 2 is less
than 1 percent than the weight of the super jumbo jet.
That is
thanks to the fact that the plane is built from carbon layers that weigh less
than 25 gramme per square metre -- one third of the weight of a sheet of paper,
Borschberg said.
It will be
powered by a massive 17,248 solar cells spread across its wings and fuselage.
The goal,
Borschberg said, is to be able to fly for at least 120 hours non-stop around
the globe.
After test
flights in Switzerland starting from next month, the plan is to take off
sometime after March 1, 2015 from a location in the Gulf, ideal for its weather
conditions, and head eastwards.
"We
will need at least five days and five nights to fly from China to the US and
from the US back to Europe," said Borschberg.
While that
cannot compete with traditional air travel, the point of the project is to push
the boundaries of green-flavoured research, said fellow pilot Bertrand Piccard,
the latest member of a dynasty of Swiss scientists-cum-adventurers.
Dumbo
"If
you say you want to fly around the world in a solar airplane, everyone thinks
you're crazy," said Piccard, who in 1999 was the first person to fly
around the world non-stop in a hot-air balloon.
"But
technology doesn't come out of the blue," he added, noting that spin-offs
from such projects are crucial for sectors from energy to auto manufacturing,
and bio-science to chemicals.
The new solar-powered
aircraft Solar Impulse (AFP Photo)
|
Borschberg
said that the plane's designers had wrestled with issues such as the fact that
more reliable technology tends to be heavier, but that weight means less
performance.
Other
issues to resolve have been how to ensure pilot safety at an altitude of 8,000
metres on a flight that will cross oceans.
"We
didn't want to spend time taking swimming lessons, so we really want to make
sure we have no trouble in the air," Borschberg said, laughing.
Borschberg
and Piccard founded the Solar Impulse project themselves over a decade ago,
after previously having struggled to get traditional aircraft manufacturers to
take them seriously.
"Each
time I look at this airplane, I have a memory of my childhood coming back and I
am sure you have the same memory: it's the Walt Disney animation cartoon
Dumbo," a tongue in cheek Piccard told the crowd.
"When
Solar Impulse was born 12 years ago and we could show the enormous wings and
the light weight of its structure on a computer design, all the specialists in
world aviation started to laugh like stupid people can laugh at Dumbo. Today
this airplane exists."
The first
Solar Impulse took to the air in 2009.
The
following year it notched up a 26-hour flight that proved it was able to stock
up enough electricity during the day in order to keep flying at night.
Before its
trans-American flight last year, the plane had already flown through Europe and
crossed the Mediterranean to reach Morocco.
No comments:
Post a Comment