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helicopter
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helicopter; vertical flight helicopter: history boatswain; helicopter helicopter: rotor
Know how a helicopter stays up in the air and how its rotor generates lift
helicopter: steering helicopter Bell Jet Ranger 206-B police helicopter Mi-12 helicopter
For Students
police helicopter
helicopter summary
Quizzes
NASA's Reduced Gravity Program provides the unique weightless or zero-G environment of space flight for testing and training of human and hardware reactions. NASA used the turbojet KC-135A to run these parabolic flights from 1963 to 2004.
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Hindenburg zeppelin crashing, 1937
Transportation and Technology Firsts Quiz
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German Hindenburg Zeppelin Explodes while trying to dock at station in Lakehurst, New Jersey on May 6, 1937. It was the worlds largest airship
Defying Gravity: 7 of the Biggest Things That Ever Flew
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10 Famous Artworks by Leonardo da Vinci
A Factory Interior, watercolor, pen and gray ink, graphite, and white goache on wove paper by unknown artist, c. 1871-91; in the Yale Center for British Art. Industrial Revolution England
Inventors and Inventions of the Industrial Revolution
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Baseball laying in the grass. Homepage blog 2010, arts and entertainment, history and society, sports and games athletics
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The Cheshire Cat is a fictional cat from Lewis Carroll's Alice's Adventures in Wonderland. (Alice in Wonderland)
11 Banned Books Through Time

helicopter: Media

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Videos

Know how a helicopter stays up in the air and how its rotor generates lift
Learn how a helicopter rotor generates lift.
Video: © Open University (A Britannica Publishing Partner)
Know about the various helicopter rotor blade design using advanced aerodynamic technology
Learn about advanced helicopter rotor blade design.
Video: © Open University (A Britannica Publishing Partner)
The rise of air taxis in Istanbul
An overview of helicopter air taxis in Istanbul.
Video: Contunico © ZDF Studios GmbH, Mainz
View Christoph Kessler of the German Space Agency working on a helicopter's rotor blades to reduce the noise
Efforts to reduce the noise generated by a helicopter's rotor blades.
Video: Contunico © ZDF Studios GmbH, Mainz

Images

helicopter; vertical flight
Components of a helicopter.
Encyclopædia Britannica, Inc.
helicopter: history
Milestones in the history of the helicopter.
Encyclopædia Britannica, Inc.
boatswain; helicopter
A boatswain's mate directing a Seahawk helicopter as it delivers supplies to a U.S....
DVIDSHUB
helicopter: rotor
Parts of a helicopter rotor.
Encyclopædia Britannica, Inc.
helicopter: steering
Controlling the direction of flight in a helicopter.
Encyclopædia Britannica, Inc.
helicopter
A helicopter in flight.
© André Wißbrock/Fotolia
Bell Jet Ranger 206-B
Charles Butler Associates undertook a complete redesign of the military prototype...
© 1998 Textron All Rights Reserved.
police helicopter
Bell Helicopter Textron 206B-3 JetRanger III civil helicopter, in police service,...
© 1998 Textron All Rights Reserved.
Mi-12 helicopter
Mil Mi-12 heavy-lift transport helicopter. Powered by two pairs of turboshaft engines,...
© Sovfoto/Eastfoto
Sikorsky R-4
Sikorsky R-4, the world's first production helicopter, which served U.S. and British...
U.S. Coast Guard
Figure 9: Low-volume spraying of pesticide on a field of corn.
Grant Heilman
Turboshaft engine driving a helicopter rotor
Figure 2: Turboshaft engine driving a helicopter rotor as propulsor.
Encyclopædia Britannica, Inc.
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