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Rubber Powered
Free Flight
A Rubber-Powered
Free Flight Airplane is a flying model powered by an elastic band. The elastic band is wound to store kinetic energy. Built carefully, some can stay aloft for forty minutes
or longer and can cover hundreds of feet. Today, this activity is educator's first choice for
developing appreciation for the technicalities of flight and other
scientific principles. Children and teachers can discover and appreciate the
usefulness of mathematical principles, scientific principles, problem
solving methods and team development through competition. |
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History of Rubber Power
The Wright Brothers received a simple free flight rubber powered aircraft when
they were 8 and 12 years old. This fuelled their fascination for flight and they
eventually embarked on a journey resulting in the invention of man made flight.
One of the most important inventions leading up to the invention of the airplane
was the rubber-powered airplane. This may seem surprising but its true. In 1871,
French scientist Alphonse Penaud astounded members of the French Academy of
Sciences by flying a rubber-powered aircraft he called a planaphore for 131
feet. It was the first recorded flight of an inherently stable, heavier than air
aircraft.
For the next 50 years, rubber-powered (then called torsion-powered) airplanes
were a key research tool for aerodynamic engineers. It allowed them to test
numerous configurations of flying surfaces for airworthiness without having to
build full-size airplanes.
Torsion-powered aircraft also became a popular toy in the late 1800s. After
Penaud's demontration, toy makers immediately started to create rubber-powered
flying toys. One of the most popular of these toys was a torsion-powered
helicopter. In 1878, Bishop Milton Wright brought this toy home to his sons
Wilbur (age 12) and Orville (age 8) and started them dreaming of flight. It soon
wore out, but they made copy after copy. They were still making copies to
delight their nieces and nephews in 1903 just before they made their first
powered flights in a real airplane.
Amazing But True! Elastic Band Facts
A rubber band is an extremely capable engine for an aircraft, and the
science of torsion motors for model airplanes has progressed at the same amazing
pace as gasoline and jet engines in real airplanes.
In 1909, as Wilbur and Orville Wright were coming home from a triumphant tour of
Europe, the American record for distance flown with a rubber band-powered
airplane was just over 200 feet.
In 1916, as World War 1 was at its height, Thomas Hall if the Illinois Model
Aero Club flew a model 5337 feet -- over a mile!
In 1924, just a few years before Lindbergh flew the Atlantic, Robert V. Jaros
(also from the Illinois Model Aero Club) flew a model 7920 feet in 10 minutes
and 14 seconds.
Today, model airplanes in the competitive FID class can fly for more than 40
minutes.
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