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The 1900
Wright Glider
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he 1900 Wright Glider was a revolution in aeronautical
engineering. It was the first of its kind with aerodynamic control surfaces
– movable planes to help balance the glider in the
air. The front elevator could be curved to pitch the nose of the aircraft up or
down. The wings could be twisted or "warped" to roll the aircraft right and left. The pioneer glider pilots that
preceded the Wright brothers had simply shifted their weight to balance their
craft – a difficult, dangerous, and ineffective method of control.
There were other innovations as well. The Wrights used considerably
less rigging to brace their airframe than previous glider makers
such as Pilcher, Chanute, and Lilienthal. This reduced drag
considerably. For that same reason, the pilot lay in a prone
position rather than hanging beneath the glider. Orville had done
some bicycle racing, and the brothers were well aware of what a
difference could be made in performance by reducing the profile of
the operator in the wind.
Unfortunately, despite their measures to reduce drag, the performance
was disappointing. The Wrights' first glider did not produce the expected lift.
Only in high winds – too high to fly safely – would it carry a grown man. Consequently, they flew
it mostly as an unmanned kite. But it was a success in one respect. The control
surfaces worked well. Manipulating the controls from the ground with
cables, the brothers could pitch and roll the aircraft with authority. Just
before they left Kitty Hawk to return home to Dayton, Wilbur mounted the glider
for several manned glides, some of which covered over 200 feet. Encouraged by
the success of their controls and thrilled by their first real flights, they
began to build a series of gliders and airplanes, each one better than the last.
This work eventually resulted in the first practical aircraft.
To celebrate the 100th anniversary of these first tentative
flights, the Wright Brothers Aeroplane Company built a replica of the 1900
Glider, then flew it at Kitty Hawk on October 22, 2000 -- precisely a century
after the Wrights made their first flights.
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Kiting the 1901 Wright Glider for the PBS film,
Kitty Hawk: A Journey of Invention.
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Launching the 1900 Wright Glider for
Kitty Hawk: A Journey of Invention.
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Shades of Tom Tate. Like the Wright brothers, we kited a young
person aloft in the 1900 glider. Tom must have enjoyed his ride at
least as much as this young lady.
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If you like to see some flight tests of our 1900 Wright Glider
replica, click
HERE.
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The 1900 Glider replica as it looks from the rear.
Like all early Wright aircraft, the elevator is in front. This aircraft
had a tail at first, but Wilbur removed it when he was sure the controls
worked properly.
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The glider from the right side -- note that the rear spar
is on top of the ribs instead of under them. Early on, the Wrights thought
that lift was produced underneath the wings and that it was more important
to keep the underside of the wing smooth.
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The glider diagonally from the right side. They were
wrong, of course -- about keeping the bottom of the wings smooth, that is.
In its position on top of the spar, the rear spar acts as a spoiler and reduces
the lift.
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The glider straight on. Although the rigging was
based on a standard "Pratt Truss," it was a system the Wrights
had invented. By tensioning just four wires on the airplane, they could
tune all the flying and landing wires.
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A diagonal view from the left front. That's Kitty
Hawk Bay behind the glider.
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And finally, the left side. The big lump at the
front of the elevator is a 25-pound bag of lead shot to keep the
wind from snatching the glider.
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The leading edge of the bottom wing – the sateen wing covering wraps
around the front spar forming a pocket. The glider puts on weight in
this area. The fine sand works its way into the pocket around the
front spar and slowly accumulates.
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The glider cockpit -- you lay down with your weight
supported on the front spar and the "belly bar." It is the most
uncomfortable cockpit you can imagine. The Wrights were dynamite at
engineering, but sadly lacking in ergonomics.
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The kickbar – by pressing the top of the
"T" with one foot or the other, you actuate the wing warping.
Kick right to
roll the aircraft left and kick left to roll it right.
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The elevator controls are backwards as well. Twist the control bar
up to go down and down to go up. Not exactly intuitive or "user
friendly" controls.
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The frame of the 1900 Wright Glider before we covered the wings and
elevator.
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The frames of all the Wrights gliders were lashed together with
waxed linen cord, the "duct tape" of the Victorian era. This is the
rear left corner of the upper wing.
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A front rib and strut attachment. The front spar was cut to a
triangular shape.
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1900 Wright Glider rigging and control wires.
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We made the three-way pivot for the swing wires from three bicycle
chain links.
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Our camp at Jockey's Ridge State Park, North Carolina, with all
three gliders outside our hangar/tent.
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The 1900, 1901, and 1903 Wright gliders from the front.
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The gliders from the side.
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And from the rear. We made this line-up to compare the gliders and
see first-hand the evolution of the Wright brothers' aeronautical
science and engineering.
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1900 Wright Glider in 3D
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This HTML5 animation of the 1900 Wright glider lets you explore the
aircraft from any angle and in fine detail. To rotate the
glider, hold down on the left click mouse button. To pan
the scene, hold down in the right click button. To zoom
in and out, use the mouse wheel. To start the
animation and enter the 3D screen, click
HERE or on any one of the illustrations to the right. Because
of the amount of detail, the HTML5 file is quite large and will take
time to load, perhaps several minutes if you have a slow connection.
To view the animation, you either need an up-to-date browser or a
Google
Chrome Frame plugin for you old browser.
You can also view the animation as a 3D PDF in
Adobe Acrobat Reader 9.0 or better.
Click HERE to view or download the 3D PDF file. |
View from front left diagonal above.
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Front view.
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Left side view.
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View from right rear diagonal below.
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