---One of the few aircraft, which first resisted Nazi Luftwaffe in 1939---
The PZL P.7 was the Polish fighter aircraft designed in early-1930s in the PZL factory in Warsaw. A state-of-the-art construction, one of the first all-metal monoplane fighters in the world, in 1933–1935 it was a main fighter of the Polish Air Force. It was replaced in Polish service by its follow-up design, the PZL P.11c. More than 30 P.7 fighters remained in service in the Polish Defensive War of 1939, scoring several kills despite their obsolescence.
The all-metal, duralumin metal-covered monoplane aircraft was conventional in layout, with braced, high gull wing and fixed undercarriage with a rear skid. The two-spar wing of trapezoid shape, thinner by the fuselage, was covered with a rimmed Wibault type duralumin sheet (upper surfaces were smooth) and supported by two struts on either side. The fuselage was framed in a front section and semi-monocoque in mid and tail sections, oval in cross-section. In keeping with the period, the pilot's cockpit was open with a windshield. The armament was two 7.92 mm machine guns mounted on the fuselage sides (initially 7.7 mm Vickers E, then re-bored to 7.92 mm). The aircraft was powered by the Bristol Jupiter VII F radial engine (normal power: 480 hp (360 kW), maximum: 520 hp (390 kW) and fitted with a Townend ring and two-blade propeller. A main 290 l fuel tank in the fuselage, behind engine, could be dropped in case of fire emergency. The second fuel tank was 7 l.
