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
Unit cost
€80,000 (2015)
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)
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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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