Aérospatiale Hélicostat

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I have used the search tool and the only "Hélicostat" was the Oehmichen hélicopter of 1924 (see http://www.secretprojects.co.uk/forum/index.php/topic,2463.0.html )
In 1977 there was another Helicostat project, still unbuilt. Picture in "Science & Vie" magazine, N° Hors Série "Aviation 77". It's a compound airship-helicopter. I may translate the 12 lines of text from French is one is interested.
 

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Found this at eBay, apparently a 1977 manufacturers brochure:
 

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