Kaman HTK-1

Kaman Corporation · United States · first flew 1950 · helicopter

The Kaman HTK-1 was a twin-seat intermeshing-rotor helicopter trainer developed for the US Navy, representing Kaman's distinctive synchropter design philosophy with no tail rotor.

Recognition (WEFT)

W — Wings	High-mounted, rotary
E — Engines	1 × piston, fuselage-mounted
F — Fuselage	7.82 m fuselage
T — Tail	No tailplane

WEFT is AircraftIQ's four-point recognition method — how it works.

Spot it by:

Intermeshing twin-rotor helicopter trainer with no tail rotor
Used by US Navy as primary helicopter trainer in early 1950s
Synchropter layout with two overlapping counter-rotating rotors

Unmistakable intermeshing twin-rotor layout with two overlapping rotor systems angled outward from the fuselage — no tail rotor; bubble canopy and piston engine in the aft fuselage.

Specifications

The Kaman HTK-1 has a length of 7.82 m (26 ft).
It has a wingspan of 12.5 m (41 ft).
Its maximum speed is 148 km/h (92 mph).
Typical crew: 1 + 1 student.

Figures are for the representative variant described above; marks differ. See how AircraftIQ sources figures.

History

First flown in 1950 and entering US Navy service shortly after, the HTK-1 was used to train naval aviators in basic helicopter operations. Kaman's intermeshing rotor system, patented by Charles Kaman, eliminated the need for a tail rotor by using two counter-rotating rotors that mesh without touching.

Variants

The HTK-1 was Kaman's first production helicopter; it led directly to the more capable HOK-1 and HUK-1 rescue and utility variants, and ultimately to the famous HH-43 Huskie.

Where you'll see it

Served with the US Navy as a primary helicopter trainer through the early 1950s before being superseded by more capable Kaman and Sikorsky designs.

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