Igor Ivanovich Sikorsky (1889 – 1972) was a Russian pioneer of aviation who designed the first four-engine aeroplanes and the first modern helicopter. drawing by Thanos / 1st Primary School of Kozani “Georgios Kontaris” Joseph-Michel
MoreIgor Ivanovich Sikorsky (1889 – 1972) was a Russian pioneer of aviation who designed the first four-engine aeroplanes and the first modern helicopter. drawing by Thanos / 1st Primary School of Kozani “Georgios Kontaris” Joseph-Michel
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