Keystone NK Pup
Keystone Aircraft · United States · first flew 1928 · light aircraft
The Keystone NK, or Keystone Pup, was a two-seat biplane trainer built by Keystone Aircraft for the United States Navy.
Recognition (WEFT)
| W — Wings | Mid-mounted, straight |
|---|---|
| E — Engines | 1 × piston, nose-mounted |
| F — Fuselage | 8.08 m fuselage |
| T — Tail | Conventional |
WEFT is AircraftIQ's four-point recognition method — how it works.
Spot it by:
- Open-cockpit two-seat biplane
- Convertible wheel or float landing gear
- Wright R-790 Whirlwind radial engine
An open-cockpit two-seat biplane powered by a 220 hp Wright R-790 Whirlwind, with landing gear that could be changed between wheels and floats.
Specifications
- The Keystone NK Pup has a length of 8.08 m (27 ft).
- It has a wingspan of 11.28 m (37 ft).
- Its maximum speed is 186 km/h (116 mph).
- Typical crew: 2.
Figures are for the representative variant described above; marks differ. See how AircraftIQ sources figures.
History
The company prototype, 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. It first flew in 1928, and a production batch followed.
Variants
The Pup was the Keystone prototype, one built. Three XNK-1 prototypes were built for the Navy, followed by 16 production NK-1s with minor changes.
Where you'll see it
The 16 NK-1s were delivered during 1930 to the United States Navy, which was the primary user. Twenty aircraft were built in all.
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- Bartel BM 5
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