Home›Airliners and Commercial Jet Aircraft›Status›AbandonedBrowse ByAbandonedFactsAbandonedSourcesComments (0)Reader Challenges (0)FactsComparisonEra of EmergenceWell-attested1950 1AbandonedFilter Results1 entryVehicle TypeAllPiston and Turboprop Airliners (1)ManufacturerAllLockheed Corporation (1)MakeAllLockheed Corporation (1)Country of OriginAllUnited States (1)Body StyleAllAircraft (no road body style) (1)Engine ClassAllPiston (1)Show ResultsLockheed Model 44 ExcaliburAbandonedSources1. Wikipedia: Jet airlinertier 2WikipediaJet airliner, lead section, 1950s turbojet sentenceQuote, Jet airliner, lead section, 1950s turbojet sentenceThe first jetliners, introduced in the 1950s, used the simpler turbojet engine; these were quickly supplanted by designs using turbofans, which are quieter and more fuel-efficient.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.