Keystone NK

Keystone NK

Role	Biplane trainer
National origin	United States
Manufacturer	Keystone Aircraft
First flight	1928
Introduction	1930
Primary user	United States Navy
Number built	20

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

United States

United States Navy

Specifications (NK-1)

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)
Range: 375 miles (603 km)

References

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.

External links

Wikimedia Commons has media related to Keystone NK.

Aerofiles

Aircraft produced by Huff-Daland Aero, Keystone Aircraft, and Keystone-Loening

Manufacturer designations	K-47 K-55 K-78 K-84 K-85 Air Yacht Commuter Pathfinder Pronto

Bombers	LB-1 XLB-3 LB-5 LB-6 LB-7 LB-8 LB-9 LB-10 LB-11 LB-12 LB-13 LB-14 XB-1 B-3 B-4 B-5 B-6

Trainers	TA-6 TW-5 AT-1 AT-2 NK

Patrol aircraft	PK

USN/USMC trainer aircraft designations 1922-1948

Boeing	NB N2B

Curtiss	NC¹ N2C

Piper	NE

Huff-Daland	HN

Howard	NH

North American	NJ

Keystone	NK

Langley	NL

Martin	NM¹ N2M

Naval Aircraft Factory	NN¹ N2N N3N N4N¹ XN5N

Spartan	NP

Fairchild	NQ

Ryan	NR

Stearman	NS N2S

New Standard	NT

Timm	NT² N2T

Consolidated	NY N2Y N3Y N4Y

¹ Not assigned ² Assigned to a different manufacturer's type

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