| 词条 | PZL S-1 | ||||||||||||||||
| 释义 |
The PZL S-1 was a Polish trainer and liaison aircraft of 1945, which remained a prototype. It was the second aircraft built in Poland after World War II. Design and developmentThe aircraft was designed by engineer Eugeniusz Stankiewicz, being a teacher in the Aviation School in Zamość. Works started in late 1944, soon after the liberation of eastern Poland, when central and western parts were still occupied by the Germans. The design of a trainer and liaison plane was approved by the Polish military Aviation Command, and Stankiewicz completed documentation in an aircraft factory PZL-Mielec in Mielec (the factory was destroyed by the Germans and at that time existed as repair works only). There, a prototype was built, utilizing parts of the Soviet Polikarpov Po-2, like an engine with a propeller, wheels and seats, also a construction of a fuselage was similar to the Po-2. The plane, named S-1 (for Stankiewicz), was very simple. It was flown on 15 November 1945, by the Soviet pilot Piotr Kondratyenko. It was the second Polish-designed plane, that flew after the war (the first was LWD Szpak). Further aircraft were not produced. The prototype crashed on 14 May 1946 in Warsaw in a bad weather, its pilot, who was Stankiewicz himself, survived. DescriptionWooden construction braced high-wing (parasol wing) monoplane, conventional in layout. Fuselage built of a frame, plywood and cancas covered. Rectangular wing with rounded tips, two-spar. Crew of two, sitting in tandem, in open cockpits with windshields. Fixed conventional landing gear, with a rear skid. Radial engine M-11D in front, with a Townend ring, two-blade wooden propeller (2.4 m diameter). Fuel tanks 126 l. Operators
Specifications{{aircraft specifications|plane or copter?=plane |jet or prop?=prop |crew=1, instructor |capacity=1, student |length main=8.5 m |length alt= |span main=13 m |span alt= |height main=3.2 m |height alt= |area main=20 m² |area alt= ft² |empty weight main=700 kg |empty weight alt= |loaded weight main=950 kg |loaded weight alt= |useful load main= |useful load alt= |max takeoff weight main= |max takeoff weight alt= |engine (prop)=Shvetsov M-11D |type of prop= air-cooled 5-cylinder radial engine |number of props=1 |power main= 125 hp |power alt= 92 kW |max speed main=180 km/h |max speed alt= |cruise speed main= |cruise speed alt= |stall speed main= 55 km/h |stall speed alt= 34 kt, 39 mph |range main=600 km |range alt= |ceiling main=3,800 m |ceiling alt= |climb rate main=3 m/s |climb rate alt= |loading main=60 kg/m² |loading alt= |thrust/weight= |armament= }} See also{{aircontent||related=
|similar aircraft= |lists= |see also= }} References
External links{{commons category|PZL S-1}}
3 : Polish military trainer aircraft 1940–1949|Polish military utility aircraft 1940–1949|PZL aircraft |
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