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Airplanes and Flight
The History of Airplanes and
Flight
From the Wright Brothers to Virgin's SpaceShipTwo
By Mary Bellis
Orville
and Wilbur Wright were the inventors of the first airplane. On December 17,
1903, the Wright brothers launched the era of human
flight when they successfully tested a flying vehicle that took off by its
own power, flew naturally at even speeds, and descended without damage.
By
definition, an airplane is simply any aircraft with a fixed wing and is
powered by propellers or jets, which is an important thing to remember when
considering the Wright brothers' invention as the father of modern
airplanes - while many people are used to this form of transportation as
we've seen it today, it's important to keep in mind that airplanes have taken
many forms throughout history.
Even
before the Wright brothers took their first flight in 1903, other inventors had
made numerous attempts to make like the birds and fly.
Among these earlier
efforts were contraptions such as kites, hot air balloons, airships, gliders
and other types of aircraft.
While some progress was made, everything changed
when the Wright brothers decided to tackle the problem of manned flight.
Early Tests and Unmanned Flights
In
1899, after Wilbur Wright had written a letter of request to the Smithsonian
Institution for information about flight experiments, he, along with his
brother Orville Wright designed their first aircraft.
It was a small, biplane
glider flown as a kite to test their solution for controlling the craft by wing
warping- a method of arching the wingtips slightly to control the aircraft's
rolling motion and balance.
The
Wright Brothers spent a great deal of time observing birds in flight.
They
noticed that birds soared into the wind and that the air flowing over the curved
surface of their wings created lift.
Birds change the shape of their wings to
turn and maneuver.
They believed that they could use this technique to obtain
roll control by warping or changing the shape of a portion of the wing.
Over
the next three years, Wilbur and his brother Orville would design a series of
gliders that would be flown in both unmanned (as kites) and piloted flights.
They read about the works of Cayley and Langley and the hang-gliding flights of
Otto Lilienthal.
They corresponded with Octave Chanute concerning some of their
ideas.
They recognized that control of the flying aircraft would be the most
crucial and hardest problem to solve.
So
following a successful glider test, the Wrights built and tested a full-size
glider.
They selected Kitty Hawk, North Carolina as their test site because of
its wind, sand, hilly terrain and remote location.
In the year 1900, the Wright
brothers successfully tested their new 50-pound biplane glider with its 17-foot
wingspan and wing-warping mechanism at Kitty Hawk in both unmanned and piloted
flights.
Continued Testing on Manned Flights
In
fact, it was the first piloted glider. Based on the results, the
Wright Brothers planned to refine the controls and landing gear, and build a
bigger glider.
In
1901, at Kill Devil Hills, North Carolina, the Wright Brothers flew the largest
glider ever flown.
It had a 22-foot wingspan, a weight of nearly 100 pounds and
skids for landing.
However, many problems occurred. The wings did not have
enough lifting power, the forward elevator was not effective in
controlling the pitch, and the wing-warping mechanism occasionally caused the
airplane to spin out of control.
In
their disappointment, they predicted that man will probably not fly in their
lifetime, but in spite of the problems with their last attempts at flight, the
Wright brothers reviewed their test results and determined that the
calculations they had used were not reliable.
They then planned to design a new
glider with a 32-foot wingspan and a tail to help stabilize it.
The First Manned Flight
In 1902, the Wright brothers
flew numerous test glides using their new glider.
Their studies showed that a
movable tail would help balance the craft and so they connected a movable tail
to the wing-warping wires to coordinate turns - with successful glides to
verify their wind tunnel tests, the inventors planned to build a powered
aircraft.
After
months of studying how propellers work, the Wright Brothers designed a motor
and a new aircraft sturdy enough to accommodate the motor's weight and
vibrations.
The craft weighed 700 pounds
and came to be known as the Flyer.
The
Wright brothers then built a movable track to help launch the Flyer by giving
it enough airspeed to take off and stay afloat.
After two attempts to fly
this machine, one of which resulted in a minor crash, Orville Wright took the
Flyer for a 12-second, sustained flight on December 17, 1903 - the
first successfully-powered and piloted flight in history.
As
part of the Wright Brothers' systematic practice of photographing every
prototype and test of their various flying machines, they had persuaded an
attendant from a nearby lifesaving station to snap Orville Wright in
full flight.
After making two longer
flights that day, Orville and Wilbur Wright sent a telegram to their father,
instructing him to inform the press that manned flight had taken place. This
was the birth of the first real airplane.
First Armed Flights: Another Wright Invention
The U.S. Government bought its first airplane, a Wright Brothers
biplane, on July 30, 1909.
The airplane sold for $25,000
plus a bonus of $5,000 because it exceeded 40 miles per hour.
In
1912, an airplane designed by the Wright brothers was armed with a machine gun
and flown at an airport in College Park, Maryland as the first armed flight in
the world.
The airport had existed since
1909 when the Wright Brothers took their government-purchased airplane there to
teach Army officers to fly.
On
July 18, 1914, an Aviation Section of the Signal Corps (part of the Army) was
established, and its flying unit contained airplanes made by the Wright
Brothers as well as some made by their chief competitor, Glenn Curtiss.
That
same year, the U.S. Court has decided in favor of the Wright Brothers in a
patent suit against Glenn Curtiss.
The issue concerned lateral
control of aircraft, for which the Wrights maintained they held patents.
Although Curtiss' invention,
ailerons (French for "little wing"), was far different from the
Wrights' wing-warping mechanism, the Court determined that use of lateral
controls by others was "unauthorized" by patent law.
Airplane Advancements After the Wright Brothers
In 1911, the Wrights' Vin Fiz was the first airplane to cross
the United States.
The flight took 84 days,
stopping 70 times. It crash-landed so many times that little of its original
building materials were still on the plane when it arrived in California.
The Vin Fiz was named after a
grape soda made by the Armour Packing Company.
After
the Wright Brothers, inventors continued to improve airplanes.
This led to the invention of
jets, which are used by both the military and commercial airlines. A jet is an
airplane propelled by jet engines.
Jets fly much faster than
propeller-powered aircraft and at higher altitudes, some as high as 10,000 to
15,000 meters (about 33,000 to 49,000 feet).
Two engineers, Frank Whittle
of the United Kingdom and Hans von Ohain of Germany, are credited with the development
of the jet engine during the late 1930s.
Since
then, some firms have developed electric aircraft that run on electric
motors rather than internal combustion engines.
The electricity comes from
alternative fuel sources such as fuel cells, solar cells, ultracapacitors,
power beaming and batteries.
While the technology is in
its infancy, some production models are already on the market.
Another
area of exploration is with rocket-powered aircraft.
These airplanes use engines
that run on rocket propellant for propulsion, allowing them to soar at higher
speeds and achieve faster acceleration.
For example, an early
rocket-powered aircraft called the Me 163 Komet was deployed by the
Germans during World War II.
The Bell X-1 rocket
plane was the first plane to break the sound barrier in 1947.
Currently,
the North American X-15 holds the world record for the highest speed ever
recorded by a manned, powered aircraft.
More adventurous firms have
also begun experimenting with rocket-powered propulsion such as SpaceShipOne,
designed by American aerospace engineer Burt Rutan and Virgin Galactic's
SpaceShipTwo.
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