Keystone NK

Keystone NK
General information
Type	Biplane trainer
National origin	United States
Manufacturer	Keystone Aircraft
Primary user	United States Navy
Number built	20
History
Introduction date	1930
First flight	1928

The Keystone NK or Keystone Pup was a two-seat biplane trainer built by Keystone Aircraft for the United States Navy.

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.

Pup

Keystone prototype, one built.

XNK-1

Prototypes for Naval variant of Pup, three built.

NK-1

Production aircraft with minor changes, 16 built.

 United States

• United States Navy

General characteristics

• Crew: 2
• Length: 26 ft 6 in (8.08 m)
• Wingspan: 37 ft 0 in (11.28 m)
• Powerplant: 1 × Wright R-790 Whirlwind , 220 hp (164 kW)

Performance

• Maximum speed: 116 mph (186 km/h, 101 kn)
• Range: 375 mi (603 km, 326 nmi)

• Taylor, Michael J. H. (1989). Jane's Encyclopedia of Aviation. London: Studio Editions.
• The Illustrated Encyclopedia of Aircraft (Part Work 1982-1985). Orbis Publishing.
• Andrade, John (1979). U.S.Military Aircraft Designations and Serials since 1909. Midland Counties Publications. ISBN 0-904597-22-9.

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• Aerofiles