Pegna-Bonmartini Rondine

The Pegna-Bonmartini Rondine, or Pegna Rondine, is a single-seat ultralight sport aeroplane designed by Giovanni Pegna and built by Piaggio in Italy during 1923.[1][2]

Rondine
Role Single-seat ultralight sport aeroplane
National origin Italy
Manufacturer Piaggio & Co[1][2]
Designer Giovanni Pegna[1][2]
First flight 1923[1][2]
Number built 1[1][2]

Development

Probably inspired by the success of entrants to the Lympne ultra-light aeroplane trials, Signore Pegna designed the Rondine to take advantage of small low-powered light weight engines available at the time.[1][2]

Design

The Rondine is a mid-winged cantilever monoplane built primarily of wood with fabric-covered wings. The fuselage is noteworthy in being clinker or carvel built similar to boat building techniques. The single piece two-spar wings are of low aspect ratio and relatively thick so external bracing is unnecessary. Control is provided by conventional ailerons and rudder, with a small fixed fin and an all-flying tailplane and elevator mounted above the rear fuselage forward of the fin. The fixed undercarriage consists of braced trousered main legs and a tail-skid.[1][2]

Several powerplants were tested with poor results until the 404 cc (24.65 cu in) ABC 8 hp, used successfully in other contemporary ultra-light aircraft, fitted with a 3:1 reduction gear, was found to be satisfactory.[1][2]

Accommodation for the pilot is in an open cockpit, set at mid chord, with padded edges, protected from the slipstream by a three-piece windscreen.[1][2]

Specifications (Rondine)
Pegna-Bonmartini Rondine 3-view drawing from NACA-TM-301

Data from Flight, 23 December 1923[1][2]

General characteristics

  • Crew: 1
  • Length: 6 m (19 ft 8 in)
  • Wingspan: 10 m (32 ft 10 in)
  • Wing area: 20 m2 (220 sq ft)
  • Aspect ratio: 5
  • Empty weight: 131 kg (289 lb)
  • Gross weight: 211 kg (465 lb)
  • Powerplant: 1 × ABC 8hp 2-cyl. air-cooled horizontally opposed piston engine, 6.0 kW (8 hp)
  • Propellers: 2-bladed fixed pitch propeller with 3:1 reduction gearing

Performance

  • Maximum speed: 70 km/h (43 mph, 38 kn)
  • Landing speed: 40 km/h (25 mph; 22 kn)
  • Lift-to-drag: 14
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gollark: I am leaning toward the idea of still having a pages table, but putting all the actual content into revisions.
gollark: It would also introduce special casing for some things, which is æ.

See also

Aircraft of comparable role, configuration and era

References
  1. "THE PEGNA "RONDINE" LIGHT MONOPLANE 400 c.c A.B.C. Engine" (PDF). Flight: 779. 27 December 1923. Retrieved 17 October 2013.
  2. "THE PEGNA "RONDINE" LIGHT MONOPLANE 400 c.c A.B.C. Engine" (PDF). Flight: 780. 27 December 1923. Retrieved 17 October 2013.
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