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  2. Coaxial-rotor aircraft - Wikipedia

    en.wikipedia.org/wiki/Coaxial-rotor_aircraft

    He had developed a small helicopter model with coaxial rotors in July 1754 and demonstrated it to the Russian Academy of Sciences. [1] In 1859, the British Patent Office awarded the first helicopter patent to Henry Bright for his coaxial design. From this point, coaxial helicopters developed into fully operational machines as we know them today ...

  3. File:NASA-MarsIngenuityHelicopter-FirstFlightVideo-20210419.webm

    en.wikipedia.org/wiki/File:NASA-MarsIngenuity...

    As one of NASA’s technology demonstration projects, the 19.3-inch-tall (49-centimeter-tall) Ingenuity Mars Helicopter contains no science instruments inside its tissue-box-size fuselage. Instead, the 4-pound (1.8-kg) rotorcraft is intended to demonstrate whether future exploration of the Red Planet could include an aerial perspective.

  4. Human-powered helicopter - Wikipedia

    en.wikipedia.org/wiki/Human-powered_helicopter

    The American Helicopter Society (AHS) International's Igor I. Sikorsky Human Powered Helicopter Competition was a competition to achieve the first human-powered helicopter flight to reach an altitude of 3 m (10 ft) during a flight lasting at least 60 seconds, while remaining within a 10 m (32.8 ft) x 10 m (32.8 ft) square, and complying with other competition requirements. [1]

  5. Startling video shows moment man survives helicopter crash ...

    www.aol.com/shocking-moment-man-survives...

    Science & Tech. Sports. Weather. 24/7 Help. ... Startling video shows a helicopter spinning out of control and crashing into a small plane at a Texas airport — with the pilot miraculously ...

  6. Science Olympiad - Wikipedia

    en.wikipedia.org/wiki/Science_Olympiad

    Since 2012, a Global Ambassador Team from Japan has been invited to attend the national tournament as part of a partnership between Science Olympiad, MEXT and JST.Each year, the Grand Prize for winning the Japan High School Science Championships (JHSSC), a competition styled after the U.S.-based Science Olympiad is a trip to the U.S. to participate in the Science Olympiad National Tournament.

  7. International Science Olympiad - Wikipedia

    en.wikipedia.org/wiki/International_Science_Olympiad

    The International Science Olympiads are a group of worldwide annual competitions in various areas of the formal sciences, natural sciences, and social sciences.The competitions are designed for the 4-6 best high school students from each participating country selected through internal National Science Olympiads, with the exception of the IOL, which allows two teams per country, the IOI, which ...

  8. Ukrainian forces release video of downed Russian Mi-8 ... - AOL

    www.aol.com/ukrainian-forces-release-video...

    Ukraine’s military has released a video of the burning wreckage of a Russian Mi-8 helicopter on the war’s southern frontline, saying the aircraft was shot down by paratroopers. “The Russian ...

  9. Collision with geese may have caused deadly Air Evac ...

    www.aol.com/collision-geese-may-caused-deadly...

    Several pieces of the Bell 206 helicopter's propulsion system were found scattered around the crash site, including the transmission, main rotor hub and blades. The safety board said one of the ...