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建立人际资源圈Flight
2013-11-13 来源: 类别: 更多范文
Flight
History of the Propeller
The aircraft propeller looks like a simple mechanism to the uneducated
individual. To the educated, an aircraft propeller represents the highest sophistication in
aerodynamics, mechanical engineering and structural design. This report will touch on the history of
the propeller, from early pioneers/experiments, advancement during/after the war, all the way up to
current applications of the propeller. The creation of the propeller can be traced back to Leonardo
da Vinci. Da Vincis helical screw helicopter is believed to be the ancestor of the air propeller and
the helicopter rotor. The first idea of a propulsive airscrew, however, belongs to J.P. Paucton, a
French mathematician. Paucton envisioned a flying machine that had two airscrews, one for
propulsion and the other for sustaining flight. The idea of using an airscrew for propulsion was
utilized during the late 1700s to early 1800s. Only after experimentation did the inventors conclude
that more propulsive power could be obtained by merely straightening out the surface of the
airscrew blades. Attempts to utilize the straight blade propeller were made by balloonists. These
contraptions were quite strange and hardly fulfilled their purpose of actually propelling the balloon.
The basic propeller had evolved from the simple
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