The ASK 21 is a two-seater midwing with
17m span. This aircraft stands out for its
wide range of
flying tasks, being good for student instruction up to first cross-country
or competition flights. It is easy to handle on the ground as well
as in flight.
Span 17 m 55.77 ft
Wing loading (85 kg payload) 24.5 kg/m2 5.01
lbs/sqf
Wing Area 17.95 m2 193.21 sqft Wing loading (200 kg payload) 31.0
kg/m2 6.34 lbs/sqf
Wing aspect ratio 16.1 16.1
Payload cockpit front max. 110 kg 242.5 lbs
Fuselage length 8.35 m 27.39 ft Payload cockpit rear max. 110 kg
242.5 lbs
Cockpit height 0.90 m 2.95 ft
Cockpit width (clear width) 0.68 m 2.23 ft Max. speed 280 km/h 151
kts
Height at tailplane 1.55 m 5.08 ft Min. speed (single-seated) 62
km/h 33.4 kts
Min. speed (two-seated) 65 km/h 35 kts
Wing airfoil Wortmann FX S 02-196
and FX 60-126 Maneuvering speed 180 km/h 97 kts
Dive brakes extended up to 250 km/h up to 135 kts
Maximum load factor (180 km/h) +6.5 -4.0
Maximum load factor (311 km/h) +5.3 -3.0 Minimum sink (single-seated)
0.65 m/s 128 ft/min
Empty mass with min. equipment appr. 360 kg ~ 794 lbs Glide ratio
(single-seated, at 85 km/h) 34 34
Max. take-off mass 600 kg 1323 lbs Glide ratio (two-seated, at 90
km/h) 34 34
ASK
21 Spec Sheet
