IS-28B2 Data Sheet 
IS-28B2 Two Seat Glider
Performance and Limitations
Maximum All Up Weight 1146lb (Solo) 

1301lb (Dual)

Max. Glide Ratio 34:1 @ 51kts (solo) 

34:1 @ 54kts (dual)

Min. Sink Rate 118ft/min @ 43kts solo 

134ft/min @ 46kts dual

Stall Speed at max. weight dual 38kts without flaps 

35kts with +15 degrees flap

VNE 124kts
Load Factors +5.3g/-2.65g dual 

+6.5g/-4.0g solo

Wing Span 17m (55.77 ft)
Fuselage Length 8.45m (27.72ft)

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