IS28
IS-28
B2 "Lark"
Specifications and
performance:
- Wingspan: 55.7 ft.
- Length: 27.7 ft.
- Height: 6.1 ft.
- Empty weight: 893.16
lbs.
- Minimum Pilot Weight
w/o Ballast: 180 lbs.
- Maximum Combined Pilot
Weight: 396 lbs.
- Max weight: 1300.71
lbs. (normal)
- Max weight: 1146.39
lbs. (aerobatic)
- Maximum l/d solo: 34:1
@ 60 mph
- Maximum l/d dual: 34:1
@ 63 mph
- Minimum sink solo: 1.93
ft/s @ 50 mph
- Minimum sink dual: 2.23
ft/s @ 53 mph
- Maximum Dive Speed: 144
mph
- Maximum Rough Air
Speed: 103 mph
- Maximum Aerotow Speed:
87 mph
- Maximum Winch or
Autotow Speed: 78 mph
- Maximum Dive Brakes
Open: 144 mph
- Maximum Gear Down
Speed: 144 mph
- Maximum +15 Degree Flap
Speed: 81 mph
Notes:
The Lark is a two-place
tandem, all-metal, training and performance sailplane with flaps (+15 degrees to
-5 degrees), top-surface airbrakes, T-taiil, and semi-retractable landing gear.
These figures are not
guaranteed to be accurate. Consult your owners manual and relevant placards for
specifics for your particular aircraft.
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