Flying Plank EPB-1A Bachstrom   


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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
   
Performance:
L/DMax: 20@ 97 kph / 52 kt / 60 mph
   
MinSink: 1.07 m/s / 3.5 fps / 1.88 kt
   


 

Specifications:
Span Area Empty Weight Payload Gross Weight Wing Load Water Ballast
m ft sq.m sq.ft kg lb. kg lb. kg lb. kg
/sq.m
lb.
/sq.ft
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
Engine:

Comment:
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 οΎ–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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