Bartel BM 1
# Bartel BM 1

The Bartel BM 1 Maryla, originally Bartel M.1 was a fighter aircraft design for the Polish military that did not advance beyond the design stage. It was designed in response to a Polish War Ministry competition in 1925 and was placed third, netting Bartel a zł 1,000 prize. Maryla was the name of Bartel's wife. The design was a single-seat parasol-wing monoplane similar in configuration to the Nieuport-Delage sesquiplanes of the era. A distinctive feature were Y-shaped struts joining wing with an undercarriage. It was not built.

## Specifications (as designed)

Data from Polish Aircraft 1893–1939 Bartel BM-1 "Maryla", 1925

General characteristics

* Crew: 1
* Length: 7 m (23 ft 0 in)
* Wingspan: 11 m (36 ft 1 in)
* Height: 3 m (9 ft 10 in)
* Wing area: 22 $m^2$ (240 sq ft)
* Airfoil: Bartel 37/IIa
* Empty weight: 1,020 kg (2,249 lb)
* Gross weight: 1,500 kg (3,307 lb)
* Powerplant: 1 × Lorraine 12E Courlis W-12 cylinder liquid-cooled piston engine, 340 kW (450 hp)

Performance

* Maximum speed: 285 km/h (177 mph, 154 kn)

Armament

* 2 × fixed, forward-firing 7.7 mm (0.303 in) Vickers machine guns in the fuselage
* 2 × fixed, forward-firing 7.5 mm (0.295 in) Darne machine guns in wings
