The PZL Bielsko SZD-30 "Pirat" is a single-seat sailplane that was developed in Poland in the 1970s. Here's what I know about this aircraft:

## Development and Manufacturer
- Designed and built by PZL Bielsko (now PZL-Bielsko), a Polish aircraft manufacturer
- Part of the SZD (Szybowcowy Zakład Doświadczalny) series of gliders
- First flew in the mid-1970s

## Design Characteristics
- **Configuration**: Single-seat, high-performance sailplane
- **Construction**: Primarily fiberglass construction, which was becoming more common in glider design during this period
- **Wing design**: High aspect ratio wings optimized for soaring performance
- **Landing gear**: Retractable monowheel with outrigger wheels on wingtips

## Performance
- Designed as a competition-class sailplane
- Good glide ratio and thermal climbing capabilities typical of sailplanes from this era
- Intended for cross-country soaring and competition flying

## Production and Use
- Produced in relatively limited numbers
- Primarily used in Eastern European countries, particularly within the Soviet sphere of influence
- Used for both recreational soaring and gliding competitions

## Context
The SZD-30 was part of Poland's significant contribution to sailplane development during the Cold War era. PZL Bielsko produced several successful glider designs in the SZD series, and Polish sailplanes gained recognition for their quality and performance in the international soaring community.

I should note that specific technical details like exact dimensions, performance figures, and production numbers may require verification from specialized aviation sources, as information about some Eastern European aircraft from this period can be limited in Western documentation.
