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Grob GF 109 performance
and specifications
Data for G 109B
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TYPE: 2-seat motor-glider.
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PERIOD BUILT: 1980-
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COUNTRY OF ORIGIN: Germany
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ENGINE: One Grob 2500 piston engine of 70 bhp /
67 kW.
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DIMENSIONS:
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Wing span: 57 ft 2 in / 17.42 m.
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Length: 25 ft 9 in / 8.1 m
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Height: unknown
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WEIGHTS:
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Empty: 1,362 lb / 645 kg
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Gross: 1,874 lb / 850 kg
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PERFORMANCE:
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Max. speed: 130 kts / 241 kph
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Max. cruising speed: 103 kts / 118 mph / 190
kph
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Rate of climb: 670 ft/min.
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Endurance: Normally 5 hrs.
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Service ceiling: 17,770 ft.
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CAPACITY: Pilot plus 1 passenger
Germany's light aircraft industry has strong roots
in the pre-war glider era, and has not lost the
expertise in sailplane construction developed in
that time. Grob Flugzeugbau, a successful builder
of sailplanes, was able to enter the expanding
1970s sailplane market with its own design, the
G.109, which first flew in 1980.
Some 154 G.109 and 322 G.109B's were built.
Although manufacture ceased, it was taken up again
in 1990 when the RAF placed an order for a number
of aircraft as elementary trainers.
The aircraft is reported to handle well, to have
excellent visibility and to be cosy but
comfortable in the cockpit, which has standard
dual controls. With the throttle closed and prop
feathered the G.109 claims a 30:1 glide ratio, but
has a low fuel consumption of about 12 litres per
hour.
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