| 词条 | Rotorwing-Aero 3D-RV | |||||||||||||||||||
| 释义 |
The Rotorwing-Aero 3D-RV is an American autogyro that was designed by Monte Hoskins and produced by Rotorwing-Aero of Salt Lake City, Utah, introduced in 1989. Now out of production, when it was available the aircraft was supplied in the form of plans for amateur construction.[1] Design and developmentThe 3D-RV was designed to comply with the US FAR 103 Ultralight Vehicles rules, including the category's maximum empty weight of {{convert|254|lb|kg|0|abbr=on}}. The aircraft has a standard empty weight of {{convert|250|lb|kg|0|abbr=on}} when equipped with a Rotax 503 or Rotax 582 engine. With heavier engines it can be registered in the US Experimental - Amateur-built category.[1] The 3D-RV features a single main rotor, a single-seat open cockpit without a windshield, tricycle landing gear with hydraulic disk brakes, plus a tail caster. The acceptable power range is {{convert|50|to|65|hp|kW|0|abbr=on}} and the standard engines used are twin cylinder, air-cooled, two-stroke, single-ignition {{convert|50|hp|kW|0|abbr=on}} Rotax 503 engine and the twin cylinder, liquid-cooled, two-stroke, single-ignition {{convert|64|hp|kW|0|abbr=on}} Rotax 582 engine, mounted in pusher configuration.[1] The aircraft fuselage is made from bolted-together aluminum tubing and welded 4130 steel tubing. Its two-bladed rotor has a diameter of {{convert|25|ft|m|1|abbr=on}} and may use either manufactured metal blades or homemade Gyrotor wooden blades. The prototype was originally flown with wooden blades of {{convert|8|ft|m|1|abbr=on}} each, with a {{convert|5|ft|m|1|abbr=on}} hub bar, for a diameter of {{convert|21|ft|m|1|abbr=on}}. In this configuration the aircraft flew acceptably, but did not climb well on hot days at higher density altitudes. The minimum control speed is {{convert|10|mph|km/h|0|abbr=on}}[1] The initial propeller used was a {{convert|64|in|cm|0|abbr=on}} two bladed ground adjustable unit, but the plans specify a three-bladed ground adjustable design of {{convert|56|in|cm|0|abbr=on}} diameter.[1] The prototype used a conventional low landing gear design, but this was later developed into a high landing gear to set the vertical center of gravity to the prob hub height to prevent longitudinal stability issues and bunt "push-over" accidents. The final design features a tall aluminium rudder.[1] The aircraft has a typical empty weight of {{convert|250|lb|kg|abbr=on}} and a gross weight of {{convert|550|lb|kg|abbr=on}}, giving a useful load of {{convert|300|lb|kg|abbr=on}}. With full fuel of {{convert|5|u.s.gal}} the payload for the pilot and baggage is {{convert|270|lb|kg|abbr=on}}.[1] The standard day, sea level, no wind, take off roll with a {{convert|50|hp|kW|0|abbr=on}} engine is {{convert|1000|ft|m|0|abbr=on}}.[1] The manufacturer estimated the construction time from the supplied plans as 400 hours.[1] Operational historyBy 1998 the company reported that 35 sets of plans had been sold and three aircraft were completed and flying.[1] One builder reported an eight-month completion time.[1] Specifications (3D-RV){{Aircraft specs|ref=Purdy[1] |prime units?=imp
See also
References1. ^1 2 3 4 5 6 7 8 9 10 11 Purdy, Don: AeroCrafter - Homebuilt Aircraft Sourcebook, Fifth Edition, page 331. BAI Communications, 15 July 1998. {{ISBN|0-9636409-4-1}} External links
7 : Rotorwing-Aero aircraft|United States sport aircraft 1980–1989|United States ultralight aircraft 1980–1989|United States civil utility aircraft 1980–1989|Homebuilt aircraft|Single-engined pusher autogyro|Aircraft first flown in 1989 |
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