Sikorsky S-61 prototypes and projects

[TsrJoe]

Sikorsky S.61 with BS. Gnome turboshaft engines

 

[riggerrob]

Sikorsky S.61 with BS. Gnome turboshaft engines

Rolls-Royce Gnome is a license-built version of the General Electric T-58-8F turbo-shaft engine that is standard on Sikorsky S-61.

 

[Apophenia]

Sikorsky S.61 with BS. Gnome turboshaft engines

Interesting to see the S.61R depicted.

 

[Kiltonge]

Avweek article, 21 Dec 1964 about the S-61R's evaluation and eventual rejection by the German army.

Modifications over the baseline S-61R included fixed undercarriage, increased tail rotor diameter and elliptical tips to main blades.

Pressure was apparently applied by US Army Europe to align with their use of Huey / Chinook / Mohawk rather than adopt a different, relatively unproven, type with a different air mobility doctrine.