Category:Sikorsky S-69

From Wikimedia Commons, the free media repository
Jump to: navigation, search
English: The Sikorsky S-69 was an experimental compound co-axial helicopter developed as part of the Advancing Blade Concept (ABC) program in the 1970ies.

Media in category "Sikorsky S-69"

The following 4 files are in this category, out of 4 total.