Schempp-Hirth Janus
| Schempp-Hirth Janus | |
|---|---|
|
|
| Type: | Glider of seater class |
| Design country: | |
| Manufacturer: | |
| First flight: |
1974 |
| Production time: |
1974-1996 |
The Schempp-Hirth Janus is described by its manufacturer Schempp-Hirth as “the first series-built two-seater high - performance glider ever”.
Its features were GRP construction, one-piece plexiglass hood and flaps .
The Janus was manufactured from 1974 to 1996. The first variant, Janus A, had GRP wings with a span of 18.2 meters and a pendulum tail unit, while the Janus B, which was manufactured from March 1978, had a damped horizontal tail unit. The Janus C and Ce variants received a wing made of carbon fiber reinforced plastic with a span of 20 meters; the Ce also received a retractable landing gear. The sliding ratio was increased from an initial 1: 39.5 to 1:43.
A self-launching motor glider - the Janus CM, which first flew in 1978 - and a variant with a homecoming aid (Janus CT) were also developed. The last Janus CT to be built in series (registration D-KLAY) was built in 1996.
The gliding index of the different versions is between 102 and 108 points.
Technical specifications
| Parameter | Janus B. | Janus Ce |
|---|---|---|
| Pilot seats | 2 | |
| length | 8.62 m | |
| span | 18.2 m | 20.0 m |
| Wing area | 16.6 m² | 17.4 m² |
| Elongation | 23.0 | |
| Wing loading | 27-40 kg / m² | |
| Glide ratio | 39.5 at 110 km / h | 43 at 100 km / h (WK 0 °) |
| Slightest sinking | 0.7 m / s at 90 km / h | 0.61 m / s at 85 km / h (WK + 8 °) |
| Water ballast | 2 × 120 l | |
| Empty mass | approx. 370 kg | approx. 405 kg |
| Max. Takeoff mass | 620 kg | 700 kg |
| Maneuvering speed (V A ) | 170 km / h | 180 km / h |
| Maximum speed (V NE ) | 220 km / h | 250 km / h |
| Maximum speed Aircraft tow | 170 km / h | 180 km / h |
| Maximum speed Winch launch | 120 km / h | 150 km / h |
| Stall speed | approx. 70 km / h | |
| Max. Load multiple at V A | + 5.3 / −2.65 g | |
| Max. Load multiple at V NE | + 4.0 / −1.50 g | |
See also
Web links
- Schempp-Hirth: Historical Aircraft: Janus , accessed April 29, 2009.
Individual evidence
- ↑ From “Wolf” to “Discus-2” : Schempp-Hirth in the 1970s, accessed on December 2, 2010
- ↑ Schempp-Hirth KG: Flight and maintenance manual for the glider "Janus" - Janus B. series (1978)
- ↑ Schempp-Hirth Flugzeugbau GmbH: Flight manual for the Janus Ce glider. (June 1991)
