Grob Twin Astir: VH-IKU, VH-IKO
Two seat training and cross country glider
The
Twin Astirs are comfortable, well equipped training gliders. Once a student can
fly the Twin, he or she can advance easily to fibreglass single seaters.
Twin Astirs are one of the few mid-class two seat glider types that have
retractable undercarriage and carry water ballast.
They are of tail wheel configuration, the same as most solo gliders, and have an average glide ratio of 37:1.
The Twin's performance is good enough for cross country training with
an instructor. They are equipped with the same instruments as our single seat
gliders - Borgelt B20 audio vario, speed director and glide computer.
Waikerie Twin Astirs hold the following Australian records:
Speed Triangles:Performance
At 505 kg: minimum sink speed is 41 knots, best glide is 1:37 at 52 knots
At 650 kg: minimum sink speed is 49 knots, best glide
speed is 60 knots
Specifications
Wingspan 17.6 m. Retractable mainwheel, no flaps.
Wing area: 17.8 m2
Empty weight: 430 kg
Minimum pilot weight: 76 kg (ballast weights can be added if you weigh less)
Maximum pilot weight: 110 kg
Max. Load in Fuselage: 213 kg (VH-IKU), 218 kg (VH-IKO)
Maximum ballast: 100 kg
Wing loading range: 28.5 to 36.5 kg/m2
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