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BKB-1 MAIN DESIGN DATA AND PERFORMANCE ESTIMATES
Span
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b = 39
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Wing Area
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S = 155 ft2
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Aspect Ratio
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AR = 9.81
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Wing Chord
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c = 4 ft
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Airfoil
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NACA 8-H-12
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L.E. Sweep
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13o
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Weight Empty
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We = 370 lb
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Flight Weight (max)
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W = 573 lb
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Wing Loading
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W/S = 3.68 lb/ft2
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Max. Glide Ratio
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L/Dmax = 28 @ Vc = 51 mph
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Min. Sink Rate
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wmin = 150 ft/min @ Vc = 43 mph
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Stall Speed
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Vc = 43 mph
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Max. Lift Coefficient
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CLmax = 1.24
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Min Drag Coefficient
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CDmin = 0.0125
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