4 ms·

The second engine's exahust is straight out the back of the tail.

• ghaff 5y ago
  I'd wonder how big an engine you can put back there. Designs like the 727 were before turbofans. I'm not aware of any turbofan designs with an engine built into the fuselage. (But that's a pretty fundamental question so I assume it's been looked at.)
  • sokoloff 5y ago
    The F-22 has fuselage-mounted turbofans (albeit ones with a lower bypass ratio than a typical modern airliner).
  • johntb86 5y ago
    The Lockheed L-1011 had an engine at the very rear of the fuselage, though bypass ratios were lower when it was built than today.
    • ghaff 5y ago
      That was my point though. It can be done but to achieve fuel savings, which is the objective, you probably need high bypass engines.