Share this postDiscovery DoseScience Sundays #18Copy linkFacebookEmailNotesMoreScience Sundays #18Here’s your daily dose of Engineering Facts!Discovery DoseMay 07, 20234Share this postDiscovery DoseScience Sundays #18Copy linkFacebookEmailNotesMoreShareThe first successful helicopter flight was made by Igor Sikorsky in 1939.Loading...Help us spread the knowledge by sharing our content with your favorite people!ShareIf you haven’t already, join thousands of discoverers who are becoming smarter every day!SubscribePreviousNext
