| Zeta | 21 | |
| 2013 | ||
| In-Flight-Weight | kg | 60 - 110 |
| Main-Use | Acro | |
| Certifications | ||
| Naked-Pilot | kg | 43 - 93 |
| Wing-Load | kg/m² | 2,9 - 5,2 |
| Wing-Weight | kg | 4,4 |
| Area | m² | 21,00 |
| Area proj | m² | 17,60 |
| Span | m | 10,40 |
| Span proj | m | 7,99 |
| Ratio | 5,15 | |
| Ratio proj | 3,62 | |
| Rows | 3 | |
| Boxes | 21 | |
| Cells | 45 | |
| Closed Cells | 10 | |
| Lines Ø diam. | 1,7 mm; 1,3 mm; 0,8 mm; 0,5 mm | |
| Lines distance | m | 6,79 |
| Lines total | ||
| Flattening | % | 16 |
| Accelerated speed | km/h | 52 |
| Basic speed | km/h | 40 |
| Minimum speed | km/h | 26 |
| Best-Sink-Rate | ||
| Best-Glide-Ratio | ||
| GR/Fmax Estimations | ||
| Upper-Surface | S9017-E25 38 g/m² | |
| Under-Surface | Dokdo 20 DMF 35 g/m² | |
| Lines type | Edelrid; Aramid | |
| Risers | 3(3A/3B/4C) | |
| Accelerator | cm | 13 |
| Trims | No | |
| Ears | Yes | |
| B Lines | Yes |