In 1944, Vincent Bendix founded the small helicopter manufacturing company Bendix Helicopters, later renamed Helicopters Inc. Designer Martin Jensen developed two similar projects for the company: the single-seat Bendix K and the four-seat Bendix J.
Both helicopters utilized a coaxial design featuring two two-bladed, contra-rotating coaxial rotors. This innovative configuration aimed to provide enhanced stability and control in flight.
Development and Maiden Flight
Two prototypes of the Bendix K helicopter were manufactured in 1946. The first prototype, bearing the registration NX41817, took to the air on June 30, 1945. This maiden flight marked a significant step in rotary-wing aviation.
Testing and Enhancements
During its testing phase, the Bendix K’s design continued to evolve. As a result of these evaluations, the aircraft received an enclosed cabin, enhancing pilot comfort and safety and refining its final design.
Technical Specifications
| Modification | Bendix K |
| Main rotor diameter, m | 7.62 |
| Length, m | 3.81 |
| Maximum takeoff weight | 907 |
| Engine type | 1 Piston engine Continental C100 |
| Power, kW | 1 x 75 |
| Maximum speed, km/h | 129 |
| Cruising speed, km/h | 97 |
| Crew | 1 |
Image and diagram gallery of the Bendix K
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