Maximum trijet mass

[chornedsnorkack]

The heaviest twinjet is, I think, Boeing 777, with up to about 350 tons MTOW.

Probably because it is not possible for one engine to propel a bigger plane. Boeing 747 and Airbus 380 are quadjets and Mriya is a sexjet.

Can a big engine be mounted in the fin? And could a Boeing 747 or Airbus 380 derivative be built with three engines?

[Preston Watson]

DC10, B727, L1011 Tristar have a engine on the tail-fin.
The L1011 max weight I think is 211 tons. Engines are wing mounted these days as maintenance is cheaper and easier.

Airliners wound't use only one engine due to ETOPS, safety, performance and reliability issues.

[chornedsnorkack]

Engines

The L1011 max weight I think is 211 tons.

And that of MD-11 is 285 tons.

Airliners wound't use only one engine due to ETOPS, safety, performance and reliability issues.

Sure. That is why 2 is the minimum. But a plane with 1 engine out of 2 inoperative has 1/2 the total installed thrust, whereas a plane with 1 out of 3 inoperative has 2/3 of total and a plane with 1 out of 4 inoperative has 3/4 of total.

Isnīt the maximum size of twinjet defined by what one engine can climb out with if the other is inoperative? Rather than by the available total thrust of 2 engines?

[Groundloop]

"DC10, B727, L1011 Tristar have a engine on the tail-fin."

Actually the DC-10 and MD-11 have an engine mounted in the tail fin.

The TriStar and 727 have the engine in the rear fuselage with the intake in front of the fin with an S-duct down to the engine.

[mini]

Mriya is a sexjet.

Never a truer sentance written...

Sorry for the drift.