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Sikorsky S-70 Black Hawk: A Legend in Military AviationA New Era in Helicopter Design The Sikorsky S-70 Black Hawk transformed military aviation when it entered service in the ...
Unither Bioélectronique test pilot Ric Webb lifted off in a Robinson R44 helicopter powered by a hydrogen fuel cell propulsion system at Roland-Désourdy Airport in Bromont, Québec, Canada, on ...
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