The Grob Astir CS 77 is very similar to the Astir CS, and is an early single seat glider. The handling is identical to the Astir CS. The cockpit is lower than the Astir CS and not quite as roomy.
Performance
At 338 kg: minimum sink speed is 43 knots, best glide is 1:37 at 52 knots
At 420 kg: minimum sink speed is 48 knots, best glide speed is 56 knots
With 4 knot thermals, an average cross country speed of 80 km/hour is possible
Specifications
Standard class: wingspan 15 m, retractable main wheel, no flaps
Wing Area: 12.4 m²
Empty weight: 280 kg
Maximum weight: 450 kg
Minimum pilot weight: 62 kg
Maximum pilot weight: 99.5 kg
Maximum water ballast: 100 kg
Wing loading range: 27.5 to 36.3 kg/m²
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