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"One-Man Amphibious 'Copter"

De Lackner HZ-1 Aerocycle, also known as the YHO-2 and by the manufacturer's designation DH-4 Heli-Vector.

The Idea[]

De Lackner built a flying platform as a possible civil and military transport, but the main idea was as a battlefield transport for Army and Navy personnel. It was seen as a way of flying over trenches, berms,  rivers,  barriers, locations of blown-up bridges, minefields, etc.

The device[]

Above the rotors it was a small metal foot plate with a waist high tubular metal handrail and metal control shaft, with a small control panel and handle bars on it. A small motor was also on the footplate, beneath the handrail and control shaft. Below the metal foot plate as short metal drive shaft and then the 2 sets of 2  ~7ft long counter rotating rotor-blades. A short way below them is a

The "Basic US GI factor"[]

It was assumed by the US Army that a 19 year old recruit with only basic training must be able to use the kit after a brief chat and couple of demonstrations without killing or seriously injuring himself or others. It was thought to be too complex.

In addition, the low-mounted rotors had proved to be prone to kicking up small rocks and other debris.


De Lackner HZ-1 Aerocycle.
Category. Statistic.
First flight on. 22 November 1954.
Retired on.  1956 or 1957.
Major contractor(s).  De Lackner Helicopters.
Passengers and cargo capacity. 0.
Fight ceiling. 5,000 ft (1,524 m).
Top speed. 75 mph (121 km/h; 65 kn).
Dose it use nukes. No.
Range. 15 mi (13 nmi; 24 km).
Crew. 1 (a pilot).
Nationality(s). American........
Class. Direct-lift rotor aircraft.
Disc loading. Probably very low.
Number of rotor main blades. 4.
Links. https://en.wikipedia.org/wiki/De_Lackner_HZ-1_Aerocycle, http://www.aviastar.org/helicopters_eng/lockner_helicovector.php, https://images.search.yahoo.com/search/images;_ylt=AwrBT8oelhBZsCEAvhVXNyoA;_ylu=X3oDMTByMjB0aG5zBGNvbG8DYmYxBHBvcwMxBHZ0aWQDBHNlYwNzYw--?p=De+Lackner+HZ-1+Aerocycle&fr=yset_chr_cnewtab, https://video.search.yahoo.com/search/video;_ylt=AwrBT8oelhBZsCEAyBVXNyoA;_ylu=X3oDMTByMDgyYjJiBGNvbG8DYmYxBHBvcwMyBHZ0aWQDBHNlYwNzYw--?p=De+Lackner+HZ-1+Aerocycle&fr=yset_chr_cnewtab, http://military.wikia.com/wiki/De_Lackner_HZ-1_Aerocycle, http://www.transchool.lee.army.mil/museum/transportation%20museum/delackner.htm, https://infogalactic.com/info/De_Lackner_HZ-1_Aerocycle, http://www.tested.com/tech/454420-secret-and-experimental-military-planes-around-world/item/de-lackner-hz-1-aerocycle/, http://www.transportation.army.mil/museum/transportation%20museum/delackner.htm, https://commons.wikimedia.org/wiki/Category:HZ-1_Aerocycle, https://infogalactic.com/info/De_Lackner_HZ-1_Aerocycle and http://military.wikia.com/wiki/De_Lackner_HZ-1_Aerocycle.

Also see[]

  1. Bell Pogo
  2. Bell Helli-jeep
  3. Avro Flying Car
  4. Bell Helli-Vector
  5. KGB Chita Jet Belt
  6. Bell Textron Rocket Belt
  7. Bensen B-10
  8. Williams X-Jet
  9. HZ-1 Aerocycle
  10. VZ-1 Pawnee