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- Backpack_helicopter abstract "A backpack helicopter is a helicopter motor and rotor and controls assembly that can be strapped to a person's back, so that they can walk about on the ground wearing it, and can use it to fly. It uses a harness like a parachute harness and should have a strap between the legs (so that the pilot does not fall out of the harness during flight). Some designs may use a ducted fan design to increase upward thrust. Several inventors have tried to make backpack helicopters, with mixed results.Typically, a backpack helicopter differs from a conventional helicopter in two main ways:First, there is no tail rotor, and the main rotors are contra-rotating. Yaw is controlled by fine adjustment of a differential gear in the rotor drive transmission. When one rotor is adjusted to spin slightly faster than the other, it induces yaw (turning motion).Second, the rotors are fixed pitch, which assists with simplicity; this means, however, that in the event of engine failure autorotation is impossible. Usually, a ballistic parachute would be incorporated for safety.An edition of Popular Science magazine in 1969 featured a backpack helicopter that used small jet engines in a tip jet configuration instead of contra-rotating rotors. This design could function in autorotation. Related are devices like a backpack helicopter which also include a seat and leg supports, which are small, open-topped helicopters. In theory, a helicopter would be more efficient than a rocket-powered jetpack, possessing a greater specific impulse, and being more suited to hovering, due to the lower velocities of the propelled gases.".
- Backpack_helicopter thumbnail Pentecost_Backpack_Helicopter.JPG?width=300.
- Backpack_helicopter wikiPageID "3594326".
- Backpack_helicopter wikiPageLength "7479".
- Backpack_helicopter wikiPageOutDegree "58".
- Backpack_helicopter wikiPageRevisionID "706488189".
- Backpack_helicopter wikiPageWikiLink Action_Man.
- Backpack_helicopter wikiPageWikiLink Agent_Cody_Banks.
- Backpack_helicopter wikiPageWikiLink Astrid_Lindgren.
- Backpack_helicopter wikiPageWikiLink Autorotation.
- Backpack_helicopter wikiPageWikiLink Ballistic_parachute.
- Backpack_helicopter wikiPageWikiLink Baumgärtl_Heliofly_III.
- Backpack_helicopter wikiPageWikiLink Beyond_Dark_Castle.
- Backpack_helicopter wikiPageWikiLink Category:Aircraft_configurations.
- Backpack_helicopter wikiPageWikiLink Category:Emerging_technologies.
- Backpack_helicopter wikiPageWikiLink Category:Helicopters.
- Backpack_helicopter wikiPageWikiLink Category:Ultralight_aircraft.
- Backpack_helicopter wikiPageWikiLink Comics.
- Backpack_helicopter wikiPageWikiLink Commodore_64.
- Backpack_helicopter wikiPageWikiLink Contra-rotating.
- Backpack_helicopter wikiPageWikiLink Dan_Dare.
- Backpack_helicopter wikiPageWikiLink Ducted_fan.
- Backpack_helicopter wikiPageWikiLink G.I._Joe.
- Backpack_helicopter wikiPageWikiLink Gadget.
- Backpack_helicopter wikiPageWikiLink Germany.
- Backpack_helicopter wikiPageWikiLink Gyrodyne_RON_Rotorcycle.
- Backpack_helicopter wikiPageWikiLink H.E.R.O..
- Backpack_helicopter wikiPageWikiLink Helicopter.
- Backpack_helicopter wikiPageWikiLink Helicopter_rotor.
- Backpack_helicopter wikiPageWikiLink Hero_Factory.
- Backpack_helicopter wikiPageWikiLink Hiller_YROE.
- Backpack_helicopter wikiPageWikiLink Hoppi-Copter.
- Backpack_helicopter wikiPageWikiLink Hovercar.
- Backpack_helicopter wikiPageWikiLink Inspector_Gadget_(1983_TV_series).
- Backpack_helicopter wikiPageWikiLink Jet_pack.
- Backpack_helicopter wikiPageWikiLink Karlsson-on-the-Roof.
- Backpack_helicopter wikiPageWikiLink List_of_military_aircraft_of_Germany_by_manufacturer.
- Backpack_helicopter wikiPageWikiLink Macintosh.
- Backpack_helicopter wikiPageWikiLink Martin_Jetpack.
- Backpack_helicopter wikiPageWikiLink Parachute.
- Backpack_helicopter wikiPageWikiLink Popular_Science.
- Backpack_helicopter wikiPageWikiLink Ratchet_&_Clank.
- Backpack_helicopter wikiPageWikiLink Safety_harness.
- Backpack_helicopter wikiPageWikiLink Scribblenauts.
- Backpack_helicopter wikiPageWikiLink Sleeper_(1973_film).
- Backpack_helicopter wikiPageWikiLink SoloTrek_XFV.
- Backpack_helicopter wikiPageWikiLink Specific_impulse.
- Backpack_helicopter wikiPageWikiLink Spirou_et_Fantasio.
- Backpack_helicopter wikiPageWikiLink Spirou_et_les_héritiers.
- Backpack_helicopter wikiPageWikiLink Spy_film.
- Backpack_helicopter wikiPageWikiLink Super_Monkey_Ball_Deluxe.
- Backpack_helicopter wikiPageWikiLink Tecnologia_Aeroespacial_Mexicana.
- Backpack_helicopter wikiPageWikiLink The_Aerospace_Corporation.
- Backpack_helicopter wikiPageWikiLink Thrust.
- Backpack_helicopter wikiPageWikiLink Tip_jet.
- Backpack_helicopter wikiPageWikiLink Ultralight_aviation.
- Backpack_helicopter wikiPageWikiLink Woody_Allen.
- Backpack_helicopter wikiPageWikiLink File:Aa_helibackpack.jpg.
- Backpack_helicopter wikiPageWikiLink File:Pentecost_Backpack_Helicopter.JPG.
- Backpack_helicopter wikiPageWikiLinkText "Backpack helicopter".
- Backpack_helicopter wikiPageWikiLinkText "backpack helicopter".
- Backpack_helicopter wikiPageWikiLinkText "personal helicopter".
- Backpack_helicopter wikiPageUsesTemplate Template:Emerging_technologies.
- Backpack_helicopter wikiPageUsesTemplate Template:Reflist.
- Backpack_helicopter subject Category:Aircraft_configurations.
- Backpack_helicopter subject Category:Emerging_technologies.
- Backpack_helicopter subject Category:Helicopters.
- Backpack_helicopter subject Category:Ultralight_aircraft.
- Backpack_helicopter hypernym Motor.
- Backpack_helicopter type MotorsportSeason.
- Backpack_helicopter type Configuration.
- Backpack_helicopter type Page.
- Backpack_helicopter type Product.
- Backpack_helicopter type Technology.
- Backpack_helicopter comment "A backpack helicopter is a helicopter motor and rotor and controls assembly that can be strapped to a person's back, so that they can walk about on the ground wearing it, and can use it to fly. It uses a harness like a parachute harness and should have a strap between the legs (so that the pilot does not fall out of the harness during flight). Some designs may use a ducted fan design to increase upward thrust.".
- Backpack_helicopter label "Backpack helicopter".
- Backpack_helicopter sameAs Q282251.
- Backpack_helicopter sameAs Mochila-helicóptero.
- Backpack_helicopter sameAs m.09np79.
- Backpack_helicopter sameAs Ранец-вертолёт.
- Backpack_helicopter sameAs Nahrbtni_helikopter.
- Backpack_helicopter sameAs Q282251.
- Backpack_helicopter wasDerivedFrom Backpack_helicopter?oldid=706488189.
- Backpack_helicopter depiction Pentecost_Backpack_Helicopter.JPG.
- Backpack_helicopter isPrimaryTopicOf Backpack_helicopter.