B&F Fk131 Bücker Jungmann
# B&F Fk131 Bücker Jungmann

The B&F Fk131 Bücker Jungmann (transl. freshman, young man) is a German ultralight and homebuilt 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.

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

## 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).

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.

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.

## Specifications (Fk131)

Data from Tacke

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)
