4 ms·

1954

• dang 5y ago
  How do you know that?
  • pvg 5y ago
    Wikipedia has the first tethered test flight in late '54. It didn't fly untethered until 55, in 56 the US Army took over testing but this vehicle has no Army markings and is untethered. 1955 seems fairly likely. https://en.wikipedia.org/wiki/De_Lackner_HZ-1_Aerocycle#Testing https://en.wikipedia.org/wiki/De_Lackner_HZ-1_Aerocycle#Test...
  • thangalin 5y ago
    The DH-4 was made in 1954, followed by the HZ-1 in 1956. The video shows N64N in the video, but the N64N-1 didn't have water applications. Sources: https://abpic.co.uk/pictures/view/1140732 https://abpic.co.uk/pictures/view/1140732 > It is the only surviving HZ-1. The prototype, designated DH-4 ... https://transportation.army.mil/museum/coldwar/index.html https://transportation.army.mil/museum/coldwar/index.html > The HZ-1 was tested at Fort Eustis in 1956. https://archive.org/stream/ArmedForcesFilms1956/ArmedForcesFilms1956_djvu.txt https://archive.org/stream/ArmedForcesFilms1956/ArmedForcesF... > IESM-543 . Released July 1956 ... The Aerocycle is an experimental one man flying machine. http://www.aviastar.org/helicopters_eng/lockner_helicovector.php http://www.aviastar.org/helicopters_eng/lockner_helicovector... > DH-4 first flew in January 1955. https://asc.army.mil/docs/magazine2/armyalt-oct-dec-15.pdf https://asc.army.mil/docs/magazine2/armyalt-oct-dec-15.pdf > In 1954, he proposed that if the rotors of a helicopter were on the bottom, a pilot could use his own weight to steer the vehicle using kinesthetic control, similar to riding a bicycle. https://en.wikipedia.org/wiki/De_Lackner_HZ-1_Aerocycle https://en.wikipedia.org/wiki/De_Lackner_HZ-1_Aerocycle > First flight 22 November 1954 https://www.youtube.com/watch?v=VyBHM1vZLzc https://www.youtube.com/watch?v=VyBHM1vZLzc > The De Lackner DH-4 "Aerocycle", later renamed the HZ-1 Aerocycle