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November 8, 2008 - The Sunseeker
Shows Outstanding Performance even as Winter Looms in Switzerland |
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| Performance expectations for solar powered vehicles
drop off as the sun angle retreats during the winter months. The Sunseeker,
however, is still flying fantastically dispite a less-than-ideal November
sun. Eric Raymond has managed to continue flying
the Sunseeker regularly and reports from a recent flight, "I
managed to climb up over the clouds where is was very bright and cold, and
then flew back and forth on the sunny side of a row of clouds that towered
over me, bathing in the reflected light. It was blindingly bright; I left
my sun glasses behind, thinking it would just be a typical dull grey day.
I flew back and forth for a while on direct solar input, slowly climbing.
I got just to the top of the highest clouds, then I turned off the motor
to verify that there were no updrafts helping me climb." |
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| September 29, 2008 - A Weekend of
Flying at El Mirage Dry Lakebed |
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| Solar Flight's Eric Raymond, Floyd Fronius and Eric
Lentz-Gauthier along with good friend Mike Sandlin spent three days at the
historic El Mirage dry lakebed flying Solar Flight's Edelweiss
sailplane and Mike's beautiful low-tech glider dubbed the Pig.
At less than 154 pounds the Edelweiss qualifies for the ultralight
category of aircraft. With a VNE of 120 knots and wings tested beyond six
g's it is a testament to Solar Flight’s capacity to design and build extremely
light weight, high performance composite structures. |
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| Raymond, Fronius and Lentz-Gauthier flew the Edelweiss
- Eric Raymond logged the longest flight after he climbed above 10,000 feet
shortly after releasing from tow. The Edelweiss is constructed
primarily from carbon and Kevlar fibers using a honeycomb sandwich in the
fuselage. It is equipped with full span flaperons that give a crisp and
precise roll response. A sliding canopy, which can be opened in flight,
gives the pilot a unique opportunity to fly in the open air and optional
water ballast gives the Edelweiss a respectable cross country capability. |
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| Mike Sandlin's Pig is his latest design
in a series of aircraft that can be built from basic materials with basic
tools. Mike had previously flown the glider several times by roll launching
at his local hill - this was the first time the Pig had been towed.
After he took the first flight, Mike was kind enough to let everyone fly
the Pig. Many thanks! More information about Sandlin's projects
can be found on his website. |
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| August, 2008 - The Sunseeker
Now Flying Routinely Over Switzerland |
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Eric Raymond is taking advantage of the opportunity
to fly the Sunseeker on a regular basis; the Sunseeker
has now made several flights from its new home field in Switzerland. Raymond
reports, "Buttwil airport is situated on top of a ridge that is usually
soarable. Taking off from the wet grass takes some power, but I usually
can turn the motor off within a few minutes. Then I ride the updrafts until
I reach the clouds. By then my batteries are fully recharged, so I switch
the motor back on and climb up between the clouds. On top it is clear, cold
and bright, perfect conditions for solar cells! At that point I can fly
above the clouds for several hours on direct solar power, but I usualy glide
down below the clouds to see who else is flying. Sailplanes, hang gliders,
paragliders, balloons, as well as birds in abundance!"
Already the fastest manned solar powered airplane ever built, the Sunseeker
is now performing better than ever thanks to recent weight saving efforts.
Two new lighter parachutes, one worn by the pilot and one that is attached
to the airframe and deployed by a rocket, were built by Free
Flight Enterprises and installed by Brian Johnson. The new parachutes
make use of advanced materials such as Spectra and Kevlar, which give incredibly
high performance with very low weight. Also slated for the updates will
be the replacement of steel springs in the main landing gear with carbon
fiber air shocks, a new radio and transponder to comply with European standards,
and possibly a new motor controller that will be smaller and lighter making
room for a high altitude oxygen system and also adding the capability of
regenerative braking from the propeller. |
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| August 6, 2008 - Eric Raymond Flies
the Sunseeker in Europe for the First Time |
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| After much anticipation the Sunseeker has
taken to the Swiss skies. Wednesday evening, flying for the first time off
of a grass runway, the Sunseeker with Eric Raymond in the cockpit
motored quietly into the sky. Raymond made a quick 20 km loop and landed
safely before the sun set. A small crowd of observers had their doubts layed
to rest, for most, it was their first time seeing an electric airplane -
not to mention a solar powered one! The Sunseeker is resting back
in its hanger waiting to be flown again soon. |
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| May, 2008 - Sunseeker
is Moving to Europe in Preparation for FAI World Air Games 2009 |
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| For
the FAI World
Air Games 2009 to be held in Torino, Italy, the Sunseeker is
being shipped to Europe. Eric Raymond will be flying it there in preparation
for several publicity flights to be made later this year. At the World Air
Games the Sunseeker will be on display in an effort to raise awareness
of the potentials that available technologies offer to the advancement of
general aviation. |
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| 2007, Ongoing - Solar Flight Moves to Europe |
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| President and Founder of Solar Flight,
Eric Raymond, is currently working with a Swiss team in the construction
of a new solar powered airplane. The team is designing an airplane to one
day carry pilots on a voyage around the world powered entirely by photovoltaic
cells on the wings and with enough battery storage to fly continuously through
the night. |
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