Category:Sikorsky S-69
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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.
experimental co-axial compound helicopter .JPEG) | |||||
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Media in category "Sikorsky S-69"
The following 5 files are in this category, out of 5 total.
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Sikorsky XH-59A.jpg 600 × 305; 47 KB
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XH-59 U.S. Army demonstrator.jpg 800 × 540; 176 KB
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XH-59A helicopter in 1981 (1).JPEG 1,986 × 3,000; 1.8 MB
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XH-59A helicopter in 1981 (2).JPEG 2,840 × 1,880; 2.23 MB
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XH-59A helicopter in 1981 (3).JPEG 3,000 × 1,986; 1.32 MB
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