PZL Bielsko SZD-30
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| SZD-30 | |
|---|---|
 SZD-30 Pirat |
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| Type | glider |
| Manufacturer | WSK-Świdnik |
| Designed by | Jerzy Smielkiewicz |
| Maiden flight | 19 May 1966 |
The SZD-30 Pirat was designed by Jerzy Smielkiewicz as a single-seat multi-purpose sailplane capable of fulfilling the needs of every area from training to competition flying. It is cleared for cloud flying, and basic aerobatics.
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[edit] Design and development
The prototype flew for the first time on 19 May 1966 and production started in 1967. A total of 776 of all versions had been built by the beginning of 1980, including 430 completed at the WSK-Świdnik works where production was undertaken until October 1977.
The Pirat is a T-tailed cantilever high wing monoplane of wooden construction, the initial production version having mass-balanced ailerons larger than those of the current improved SZD-30C, which has epoxy/glassfibre partially mass-balanced ailerons. The first SZD-30C made its maiden flight on 10 January 1978, and was preceded by the SZD-30B Pirat 75, which was only a prototype . The high-set wing has a rectangular centre section which is a plywood covered multi-spar structure, and ply-covered tapered outer panels of single-spar torsion box construction; there are double-plate air brakes in the centre section in both upper and lower surfaces.
The fuselage is a plywood monocoque, all versions having a glassfibre nose and cockpit floor, and the cantilever wooden tail unit has a tab in the elevator trailing edge. On the C variant the forward fuselage is reinforced with a thick layer of glassfibre, which replaces the removable front skid with shock absorber of the initial production SZD-30. The nonretractable monowheel of the later had a band brake instead of the C's disc brake, the C also having a tailwheel which can be replaced by a tailskid and a roomier cockpit with an enlarged canopy. The pilot sits under a jettisonable sideways-hinged blown Perspex canopy, and has an adjustable seat back rest and rudder pedals, as well as two baggage compartments; there is provision for radio and oxygen.
[edit] Operators
The type was operated by 24 countries including following:
Argentina
Australia
East Germany
Egypt
North Korea
New Zealand
Poland
Soviet Union
United States
Venezuela
[edit] Specifications
| Type designation | SZD-30 |
| Competition class | Club, formerly Standard |
| Number built | |
| Crew | 1 |
| Length | 6.86 m (23 ft) |
| Height | |
| Cockpit width | |
| Cockpit height | 0.96 m (3 ft) |
| Wingspan | 15 m (49 ft) |
| Wing area | 13.8 m² |
| Aspect ratio | 16.3 |
| Wing profile | FX-61-168/60-1261 |
| Empty mass | ca. 260 kg |
| Maximum mass | 370 kg |
| Wing loading | ca. 25 - 27 kg/m² |
| Maximum speed | 250 km/h (135 kts) |
| Rough air speed | 140 km/h (75.5 kts) |
| Stall speed | 60 km/h (32.5 kts) |
| Minimum sink rate | ca. 0.7 m/s |
| Best glide ratio | 33 |
[edit] References
[edit] Related content
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