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What would commercial airtravel be like today if jet engines were never invented (or limited to military aircraft) and turboprops dominated the market? Granted I'm no sure how to keep jet engines from being discovered shot of ASB, but let's assume they don't exist for whatever reason. How big (& how long a range) could a turboprop be and still be commercially viable? How would other forms of transport be affected? I can see trains still being popular, even on long distance routes, but would we still have ocean liners as a mode of passenger trasnport?
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