Kaman K-225
| K-225 | |
|---|---|
 |
|
| XHTK-1 modified with a Boeing 502 (YT50) turboshaft engine | |
| Role | Experimental helicopter |
| Manufacturer | Kaman Aircraft |
| First flight | 15 January 1947 |
| Status | Retired |
| Primary user | United States Navy, United States Coast Guard |
| Number built | 7 |
| Unit cost |
$25,000
|
The Kaman K-225 was an experimental helicopter developed by Kaman Aircraft. One was modified to become the world's first gas turbine-powered helicopter.
The K-125 was Charles Kaman's first helicopter, which utilized intermeshing rotors and Kaman's patented servo-flap stability control. The K-125 first flew on 15 January 1947.
The K-190 and K-225 were an improved versions of the K-125, which first flew in April and July 1949 respectively. The U.S. Navy bought two and the Coast Guard one for $25,000 each. The United States Air Force evaluated one K-225 with the designation YH-22.
A modified K-225 equipped with a Boeing 502 (YT50) turboshaft engine became the world's first gas turbine- powered helicopter in December 1951. This aircraft is now at the Smithsonian Institution in Washington, D.C.
Data from
General characteristics
Performance
,Notes
...
Wikipedia