Warne Bubble Plane

Bubble Plane
General information
TypeSporting aircraft
National originAmerican
ManufacturerMonte Warne
Number built1
RegistrationN11TH
History
Introduction date1995

The Bubble Plane was a sporting monoplane constructed by Monte Warne of Tennessee. It was notable for being made using components sourced from several different aircraft.

Design and development

The Bubble Plane was a high-wing pusher monoplane. It was constructed using the fuselage of a pre-owned RLU-1 Breezy, which had been equipped with the wings of a Piper PA-11 lightplane, and the wing-struts from a Piper PA-18, and was powered by a 160 hp (120 kW) Lycoming O-320 engine.[1]

In creating the Bubble Plane, Warne retained those components, but modified the fuselage to increase its length, changed the tandem seating arrangement to being side-by-side, and also replaced the original tricycle undercarriage with one that had a conventional tail-dragger layout. A bubble canopy sourced from a Bell 47 helicopter was located at the front of the fuselage, and provided excellent all-round visibility. A fairing was built between the canopy and the engine.[1] It had capacity to carry up to 200 lb (91 kg) of luggage, and sufficient fuel to fly for 32 hours.[2]

The Bubble Plane was given the FAA registration N11TH, with an airworthiness test taking place in 1995. The registration was kept active through to 2011.[3]

Specifications

Data from Sport Aviation[1]

General characteristics

  • Crew: 1
  • Capacity: 2
  • Empty weight: 1,050 lb (476 kg)
  • Gross weight: 1,850 lb (839 kg)
  • Fuel capacity: 36 US gal (30 imp gal; 140 L)
  • Powerplant: 1 × Lycoming O-320 , 160 hp (120 kW)
  • Propellers: 3-bladed IVO Magnum

Performance

  • Maximum speed: 115 mph (185 km/h, 100 kn)
  • Cruise speed: 90 mph (140 km/h, 78 kn)
  • Stall speed: 40 mph (64 km/h, 35 kn)
  • Endurance: 32 hours
  • Rate of climb: 1,000 ft/min (5.1 m/s)
  • Takeoff distance: 200 ft (61 m)
  • Landing distance: 300 ft (91 m)

See also

Aircraft of comparable role, configuration, and era

References

  1. 1 2 3 Cox, Jack (July 1996). "The Bubble Plane: A Homebuilt With A View". Sport Aviation. Vol. 38, no. 7. Hales Corners, WI: EAA. pp. Front cover, 20–26.
  2. ↑ Hiles, Bill (18 August 1996). "Have Bubble Plane, ready to cruise". The Tennessean. Nashville, Tennessee. p. 36.
  3. ↑ "Aircraft N11TH Data". Airport-Data.com. Retrieved 6 February 2026.