Viking Dragonfly

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Dragonfly
VH-DBL Viking Dragonfly Mk.2 (7529629670).jpg
Role Light aircraft
National origin United States of America
Manufacturer Viking Aircraft/Slipstream Industries
First flight June 16, 1980[1]
Number built 500+ (2003)[1]
Unit cost
US$8,500 (kit, 1998)
Developed from Rutan Quickie

The Viking Dragonfly is an American amateur-built aircraft, designed by Bob Walters [2] and produced by Viking Aircraft of Elkhorn, Wisconsin. The aircraft is supplied as a kit or as plans for amateur construction.[3]

Design and development[edit]

The Dragonfly is a two-seater variant of the Rutan Quickie. The aircraft features a tandem wing layout with a forward wing mounted low and the other behind the cockpit in a shoulder position, a two-seats-in-side-by-side configuration enclosed cockpit under a bubble canopy, fixed landing gear and a single engine in tractor configuration. The cockpit is 43 in (109 cm) wide[3]

The aircraft is made from composites. Its forward 20 ft (6.1 m) span wing employs a GU25-5(11)8 mod airfoil, when the aft wing (span 22 ft) uses an Eppler 1212 airfoil.[4] Both wings have a total area of 92.2 sq ft (8.57 m2). Standard engines used include the 60 hp (45 kW) Volkswagen air-cooled engine and the 85 hp (63 kW) Jabiru 2200 four-stroke powerplants. Construction time from the supplied kit is estimated as 700 hours, while from plans is estimated at over 1200 hours.[1][3]

Operational history[edit]

The Dragonfly was given the Outstanding New Design Award at the EAA Convention in 1980.[5] By 1998, 500 examples of all variants were reported as flying.[3]

Variants[edit]

Dragonfly Mk 2
Dragonfly Mk I
Original version with main landing gear mounted in fairings at the lower wing tips. Operations require paved runways and wide taxiways due to widely spaced main wheels.[3]
Dragonfly Mk II
Version with conventional landing gear.[3]
Dragonfly Mk III
Version with tricycle landing gear.[3]

Specifications (Mark III Millenium)[edit]

Data from [1]

General characteristics

  • Crew: 1
  • Capacity: 1 passenger
  • Length: 19 ft 0 in (5.79 m)
  • Wingspan: 22 ft 0 in (6.71 m)
  • Height: 5 ft 6 in (1.68 m)
  • Wing area: 92.1 sq ft (8.56 m2)
  • Empty weight: 600 lb (272 kg)
  • Gross weight: 1,250 lb (567 kg)
  • Powerplant: 1 × Jabiru 2200 air-cooled flat-four

Performance

  • Cruise speed: 130 mph (113 kn; 209 km/h)
  • Stall speed: 55 mph (48 kn; 89 km/h)
  • Never exceed speed: 180 mph (156 kn; 290 km/h)
  • Range: 500 mi (434 nmi; 805 km)
  • G limits: +4.4, -2.0
  • Rate of climb: 850 ft/min (4.3 m/s)

See also[edit]

Similar aircraft

References[edit]

  1. ^ a b c d Jackson 2003, pp. 734–735.
  2. ^ Bill Cox : "...Bob Walters, an ex-Navy fighter pilot with a penchant for designing his own airplanes. Walters came up with his two-seat adaptation of the Quickie..." in Homebuilt Aircraft, March 1985, "New legs for a Dragonfly", page 18
  3. ^ a b c d e f g Purdy, Don: AeroCrafter - Homebuilt Aircraft Sourcebook, page 284-285. BAI Communications, 15 July 1998. ISBN 0-9636409-4-1
  4. ^ Lednicer, David (2010). "The Incomplete Guide to Airfoil Usage". Retrieved 4 December 2012. 
  5. ^ "General Flight" Flight International, 1 November 1980 p1681
  • Jackson, Paul. Jane's All The World's Aircraft 2003–2004. Coulsdon, UK: Jane's Information Group, 2003. ISBN 0-7106-2537-5.

External links[edit]