B&F Fk131 Bücker Jungmann

The B&F Fk131 Bücker Jungmann (transl. Young Man) is a German ultralight and experimental aircraft with the project design headed by B&F Technik Vertrieb GmbH of Speyer and the aircraft produced by Podesva Air of the Czech Republic, introduced at the AERO Friedrichshafen show in 2013. The aircraft was built in a production run of ten aircraft and supplied complete and ready-to-fly. By 2017 it was no longer advertised for sale.[1][2]

Fk131 Bücker Jungmann
Role Ultralight aircraft
National origin Germany
Manufacturer Podesva Air
Designer Peter Funk
Introduction 2013
Status Production completed (2017)
Produced 2013
Number built 10
Developed from Bücker Bü 131 Jungmann

The aircraft is a replica of the 1934 Bücker Bü 131 Jungmann.[1]

Design and development

The project to produce a batch of Bücker Bü 131 Jungmann replicas was headed by B&F's Peter Funk. Production commenced in 2013 with an initial batch of ten aircraft. The aircraft were to be eligible for the Fédération Aéronautique Internationale microlight rules at a gross weight of 472.5 kg (1,042 lb) and experimental aircraft rules at a gross weight of 520 kg (1,146 lb).[1]

The design features a wire and strut-braced biplane layout, a two-seats in tandem open cockpit, fixed conventional landing gear and a single engine in tractor configuration.[1]

The aircraft duplicates the original 1934 Bü 131's construction. Its 7.25 m (23.8 ft) span wing is supported by cabane struts and a single set of parallel interplane struts outboard on the wings, with wire bracing. The standard engine used is the 82 hp (61 kW) Walter Micron IIIC four-stroke, inverted four cylinder, air-cooled powerplant.[1]

Specifications (Fk131)

Data from Tacke[1]

General characteristics

  • Crew: one
  • Capacity: one passenger
  • Wingspan: 7.25 m (23 ft 9 in)
  • Empty weight: 297 kg (655 lb)
  • Gross weight: 472.5 kg (1,042 lb)
  • Fuel capacity: 70 litres (15 imp gal; 18 US gal)
  • Powerplant: 1 × Walter Micron IIIC four cylinder, inverted, air-cooled, four stroke aircraft engine, 61 kW (82 hp)
  • Propellers: 2-bladed fixed pitch

Performance

  • Cruise speed: 150 km/h (93 mph, 81 kn)
  • Rate of climb: 2.9 m/s (570 ft/min)

References
  1. Tacke, Willi; Marino Boric; et al: World Directory of Light Aviation 2015-16, page 51. Flying Pages Europe SARL, 2015. ISSN 1368-485X
  2. FK-Lightplanes (2017). "FK-Lightplanes". Retrieved 19 February 2017.
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