Bendix K
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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ArchivoAéreo Editorial Team
A group of aviation researchers and enthusiasts dedicated to documenting and preserving global aeronautical history. All articles are reviewed to ensure historical accuracy.
Sources & Accuracy
The information presented in this technical sheet has been compiled from declassified flight manuals, historical archives, and specialized literature. While we strive for maximum accuracy, some performance data may vary depending on the specific variant or operational conditions.