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Originally posted by RichardPrice
THe engine is designed to propel (in a 2 engine format) a 240 seat aircraft to Mach 1.8 with afterburner and sustain without afterburner, supercruise to Mach 1.1 and also cruise at a second speed of Mach 0.9. The engines efficiency is supposed to be the same at Mach 1.8 as that of a 400 seat 747 fully laden over the same route, and a range that makes it capable of doing transpacific routes, which the Concorde wasnt capable of.
The engine is designed as both a turbojet at highspeed and as a turbofan at low speed, which is an innovative new solution to fuel consumption issues. As more speed is required, the engine silently reconfigures itself internally to produce the best airflow, fuel efficiency and thrust for the desired speed.
Originally posted by Aether
From a mechanical point of view, can you describe how you turn a turbofan into a turbojet engine? What happens to your fan?
Originally posted by RichardPrice
Originally posted by Aether
From a mechanical point of view, can you describe how you turn a turbofan into a turbojet engine? What happens to your fan?
I dont quite know the ins and outs, but the main difference between the two types of engine is that in a turbofan engine, as much as 90% of the intake air is blown out the side of the engine and not passed into the actual reaction chamber for burning, whereas in a turbojet engine, all the intake air is burnt with fuel and expanded.
Technically I guess that the fan doesnt go anywhere, its what happens to the air afterward that defines the type of engine.
Originally posted by FredT
It could just be a revisit of future engine design with no tenative plans to develop a plane.
If indeed these engines pan out they are the equiv. of the holy grail. Speed of sound transport at subsonic efficency.
However, If it is possible, I wonder if the military would step in and same mememememememe and not allow comercial apps for a bit???
From a mechanical point of view, can you describe how you turn a turbofan into a turbojet engine? What happens to your fan?