Home›Supersonic and Experimental Aircraft›Engine Class›TurbopropBrowse ByTurbopropFactsTurbopropSourcesComments (0)Reader Challenges (0)FactsComparisonEra of EmergenceWell-attested1947 1TurbopropFilter Results1 entryVehicle TypeAllVertical Takeoff and Landing Research Aircraft (1)ManufacturerAllBell Textron (1)MakeAllBell Helicopter (1)YearAll1977 (1)Country of OriginAllUnited States (1)Body StyleAllAircraft (no road body style) (1)StatusAllSurviving (1)Show ResultsBell XV-15TurbopropSources1. Wikipedia: Sound barriertier 2WikipediaSound barrier, lead section, Yeager 1947 sentenceQuote, Sound barrier, lead section, Yeager 1947 sentenceIn 1947, American test pilot Chuck Yeager demonstrated that safe flight at the speed of sound was achievable in purpose-designed aircraft, thereby breaking the barrier.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.