Concept C-70 Berkshire   

General Details
Manufacturer: Berkshire
Plane Name:

Concept C-70

Classified as: Unclassified
Country Of Origin: U S A
Designer: A. Zimmermann
No. of Seats 1
No. Built 21
L/DMax: 39


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.
15 49.2 12.26 132 250 550 147 325 397 875 32.38 6.63 91 200
Aspect ratio: 18.3
Airfoil: Wortmann
Structure: fiberglass

The C-70 which first flew in 1971, is a 15-meter racing class ship of molded fiberglass construction. The fuselage incorporates a tubular- steel framework that ties together the landing gear, wing fittings and a protective cage around the pilot. Differing in a number of respects from the prototype, the production version emerged with a Wortmann airfoil, full-span flaps, no brakes and a conventional horizontal tail. The 90- degree flaps allow a very steep landing approach. The ship also features retractable gear, in- flight adjustable rudder pedals, adjustable seat- back and (optional) 91 kg./ 200 lb. Water ballast. Production ceased in 1974.


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