Sikorsky XH-39

XH-39 (S-59)
Sikorsky XH-39
Role Helicopter
Manufacturer Sikorsky Aircraft
First flight 26 August 1954
Introduction not produced
Primary user United States Army
Number built 3
Developed from Sikorsky S-52

The Sikorsky XH-39 (manufacturer designation S-59), developed by Sikorsky Aircraft in 1954, was the U.S. Army's first turbine-powered helicopter. It was fast and innovative, but ultimately rejected by the United States Army in favor of the Bell UH-1 Iroquois.