Flying Plank EPB-1A Bachstrom   

General Details
Manufacturer: Bachstrom
Plane Name:

Flying Plank EPB-1A

Classified as: Unclassified
Country Of Origin: U S A
Designer: A. A. Backstorm
No. of Seats 1
No. Built 16
L/DMax: 20@ 97 kph / 52 kt / 60 mph
MinSink: 1.07 m/s / 3.5 fps / 1.88 kt


Span Area Empty Weight Payload Gross Weight Wing Load Water Ballast
m ft sq.m sq.ft kg lb. kg lb. kg lb. kg
kg lb.
7.62 25 9.29 100 68 150 91 200 159 350 17.11 3.5 0 0
Aspect ratio: 6.25
Airfoil: Abrial 15%
Structure: wood / fabric

The flying plank was developed in 1954 by Al Backstrom assisted by Phil Easley and Jack Powell as an attempt to combine minimum size with reasonable performance. The prototype EPB-1 was used for drag reduction tests at Mississippi State University. Plans for the –1A development were sold and a number built, most with twin wingtip rudders, but some were completed with a central fin and rudder. Spans have varied up to 9.30 m. / 30.5 ft. A self-launching model was developed later. The Vintage Sailplane Association has plans.


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