One of the few primary endeavors of Kaman, initially developed in August 1994 before getting shut down in 2001. In 2017, however, the production of the K-MAX has started up again. The synchrocopter made its first flight in 1991 .
A primary design feature of the K-MAX is successfully providing Vertical Reference Flight (VRF), meaning the pilot has a visual of the external load, pick-up, target and surrounding area from the cockpit . The K-MAX has also been operated as an unmanned aircraft.
Source 1: Moorman, Robert W. "Coming Full Circle". Vertiflite, July/August 2015. Published by AHS International. Page 30.
Source 2: Haliscak, George. "Vertical Reference Flight (VRF) The Kaman K-1200 'K-MAX' Helicopter Design". Presented at the AHS 55th Annual Forum, 1999. Page 1.
VTOL type: Helicopter
Lift configuration: Synchropter (x2)
Crew required: 1
Crew seating: Single seater
Landing gear: Wheels (non-retractable)
Overall Height: 4.10 m (13.5 ft)
Overall Length: 15.85 m (52.0 ft)
Overall Width: 16.00 m (52.5 ft)
Max Gross Weight (ground): 3175 kg (7000 lb)
Max Gross Weight (airborne): 5443 kg (12000 lb)
Max Range: 495 km (267 nm)
Max Endurance: 2.7 hrs (2.7 hrs)