This page summarizes some typical specifications of the Sirocco. Two versions are shown: the current Sirocco NG prototype (for which all figures should be considered preliminary and informal), and the 1985 Sirocco with Rotax 377 model. Many other versions of the Sirocco exist, with different engines, etc., and these will have had variations in all the specifications. See also the notes at the bottom of this page.
Dimensions
| Sirocco NG | Sirocco 377GB | |
|---|---|---|
| Date introduced | 2009 | 1985 |
| Empty mass (kg) | 115–131 | 136 |
| MTOM (kg) (Maximum Take Off Mass) | 220 ? | 240 |
| Overall length (m) | 5.80 | 5.80 |
| Overall height (m) | 2 ? | 2.8 |
| Wing span (m) | 9.00 | 10.12 |
| Wing area (m2) | 12.15 | 14.1 |
| Wing loading (kg/m2) | 18.1 | 17.1 @ MTOM |
| Wing chord (constant) (m) | | 1.38 |
| Aspect ratio | 6.6 | 7.3 |
| Load factor (g) | | +4, −2 |
Performance
| Sirocco NG | Sirocco 1985 | |
|---|---|---|
| Cruise speed (kph) | 80–95 | 72–111 |
| Vs0 Stalling speed (kph) | ~55 | 45 |
| Vne Max speed (kph) | 120 | 138 |
| Max climb rate (m/s) | 2.5 @ 75 | 5.5 |
| Min sink rate (m/s @ kph) | 2.25 @ 85 | 1.7 @ 55 |
| Min sink glide ratio | 9? @ ? | 9.0 @ 55 |
| Best glide ratio | 10.5 @ 85 | 11 @ 65 |
| Take off distance (m) | | 152 |
| Landing distance (m) | | 152 |
| Fuel capacity (L) | 20/40 | 20 |
| Range (km) | 230/460 | 299 |
Engine
| Sirocco NG | Sirocco 1985 | |
|---|---|---|
| Make | Rotax 447 | Rotax 337 |
| Type | 2 stroke | 2 stroke |
| Engine power (hp) | 40 | 35 @ 6750rpm |
| Displacement (cc) | 427 | 366 |
| Propellor diameter (m) | | 1.32 |
| Propellor pitch (m) | | 0.81 |
| Consumption (L/hr) | 5–7 @ 75% | 6 @ 5000rpm |
- The take off and landing distance numbers above include clearance of a 15m obstacle.
- The 1985 figures vary with source; the numbers shown are a rough average.
- Other engines for early Siroccos include the 24 hp Koenig 43ORD, the 26 hp JPX PUL 425, and the 40 hp Rotax 447.
- Range distances given above are for raw cruise (no climb or reserve included).