PZL Bielsko SZD-12
| SZD-12 Mucha 100 | |
|---|---|
 SZD-12 Mucha 100 in the Polish Aviation Museum |
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| Type: | Glider |
| Design country: | |
| Manufacturer: | |
| First flight: |
November 14, 1953 |
| Production time: |
1952-1960 |
| Number of pieces: |
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The PZL Bielsko SZD-12 Mucha 100 is a Polish glider . The abbreviation SZD stands for Szybowcowy Zakład Doświadczalny (Glider Development Plant ).
development
The SZD-12 was created from 1952 as a further development of the IS-2 Mucha ( German fly ) from 1948 due to the demand for a single-seat school and performance sailor. Władysław Okarmus, Jan Dyrek and Zbigniew Badura were responsible for the construction. A prototype was built, which received the registration number SP-1400 and completed the first flight on November 14, 1953 with Adam Zientka. The tests were successful and so the model went into series production in Krosno , with 14 more being built in the SZD plant in Gdańsk . Overall, this first series, which ran until 1958, comprised 104 SZD-12s. In the meantime, an improved version with the main wheel moved backwards and metal air brakes had been developed, which was then issued as the Mucha 100A in 206 copies. 68 of them were exported to a total of 13 countries, which also included three SZD-12s delivered to the GDR . Of these, the first flew with the license plate GDR – 2013 from 1954 at the army sports club in Cottbus and broke there two years later; the other two ( GDR– , later DM – 2032 and DM – 2050 ) were delivered in 1956 and 1958 and used by GST until 1968 . An unknown number of aircraft were also produced under license in China. The successor was the SZD-22 Mucha Standard developed in 1958 .
construction
The SZD-12 is a cantilevered full- wood shoulder -wing aircraft with a plywood-planked fuselage with an oval cross-section. The wings are designed in two parts and have a spar and an inclined spar. The plywood cladding runs from the leading edge of the wing up to the level of the spar, behind which it is detached from the fabric covering. The cladding of the cantilever tail unit is made of plywood for the fins and fabric for the oars. The landing gear consists of the brakable main wheel (250 mm × 125 mm), a wooden skid on the bow and the steel stern spur.
Technical specifications
| Parameter | Data (Mucha 100) |
|---|---|
| crew | 1 |
| span | 15 m |
| length | 7 m |
| height | 1.60 m |
| Wing area | 15 m² |
| Wing swept | 4 ° |
| Wing extension | 15th |
| Wing loading | normal 17.3 kg / m² maximum 19.40 kg / m² |
| Empty mass | 195 kg |
| Payload | 95 kg |
| Takeoff mass | maximum 290 kg |
| Top speed | 220 km / h in a dive, 200 km / h in a dive with brakes |
| Towing speed | up to 94 km / h in winch tow up to 130 km / h in aircraft tow |
| Minimum speed | 50-55 km / h |
| Glide ratio | 24 at 70 km / h |
| Slightest sinking | 0.76 m / s at 67 km / h |
| profile | NACA 43012A (wing root) |
| Breaking load multiple | 10.5 |
literature
- Kazimierz Wojciech Chudzinski: Polish gliders. Volume 1: 1945-1970. Verlag für Technik und Handwerk, Baden-Baden 2014, ISBN 978-3-88180-454-7 .
- Heinz AF Schmidt: New aircraft from all over the world. In: Flieger-Jahrbuch 1959. Die Wirtschaft, Berlin 1958, p. 113.
Web links
Individual evidence
- ^ Detlef Billig, Manfred Mayer: Airplane of the GDR . III. Tape. TOM Modellbau, Friedland 2003, p. 162 .