Home›Lighter-Than-Air Craft and Rotorcraft›Engine ClassBrowse ByEngine ClassFactsEngine ClassSourcesComments (0)Reader Challenges (0)FactsComparisonEra of EmergenceWell-attested1852 1Era of EmergenceWell-attested1936 2Engine ClassElectric motorEngine Class2 entriesGas turbineEngine Class3 entriesJetEngine Class3 entriesPistonEngine Class27 entriesRotaryEngine Class1 entryTurbopropEngine Class1 entryTurboshaftEngine Class90 entriesSources1. Wikipedia: Henri Giffardtier 2WikipediaHenri Giffard, lead section, 1852 dirigible sentenceQuote, Henri Giffard, lead section, 1852 dirigible sentenceIn 1852 he invented the steam injector and the powered Giffard dirigible airship.View the Source2. Wikipedia: Helicoptertier 2WikipediaHelicopter, lead section, Focke-Wulf Fw 61 sentenceQuote, Helicopter, lead section, Focke-Wulf Fw 61 sentenceThe Focke-Wulf Fw 61 was the first successful, practical, and fully controllable helicopter in 1936, while in 1942, the Sikorsky R-4 became the first helicopter to reach full-scale production.View the SourceComments (0)No comments yet. Be the first to share a thought.Sign in to join the discussion.Reader Challenges (0)No disputes yet. Spotted an error or a better source? Open the first one.Sign in to dispute this or suggest a correction.