Keystone NK
The Keystone NK or Keystone Pup was a two-seat biplane trainer built by Keystone Aircraft for the United States Navy.
Design and development
The NK was an open-cockpit two-seat biplane with a convertible wheel or float landing gear. It was powered by a 220 hp (164 kW) Wright R-790 Whirlwind. The company prototype designated the Pup was entered into a United States Navy design competition for a trainer and was awarded a contract for three prototypes designated XNK-1. Following evaluation a production batch of 16 was ordered designated NK-1 which were delivered during 1930.
Variants
- Pup
- Keystone prototype, one built.
- XNK-1
- Prototypes for Naval variant of Pup, three built.
- NK-1
- Production aircraft with minor changes, 16 built.
Operators
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Specifications (NK-1)
General characteristics
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References
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External links
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