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See through jet engine

Or, as a mate said at an interview in reply to a question about jet engines

“Suck, push, bang, blow, all in a straight line, all at the same time.”

He got the job.
 
The "bang" is a hangover from reciprocating engines which do produce series of explosions.
Jet egines just have a very hot fire burning continuously (hopefully).
 
A bang is a fire with nowhere to go!

A bang is, probably most frequently, a violent evolution of a volume of gas with nowhere to go. You can get a hell of a bang by putting some dry ice into a sealed can or bottle, or just connect a sealed container to a compressor.
There is no bang in a jet engine as there is ample opportunity for the gas to escape - through the turbine and beyond. The last thing you want in a jet engine, is a bang.
 
Just like a 4-stroke, they have the four steps, rather than cycles, as they all happen simultaneously along one axis, rather than sequentially in seperate cylinders.

And the benefit (in aviation least) of not having to bear the penalty of having to carry around a heavy engine engine that generates no power for 75% of its working cycle :)
 
And the benefit (in aviation least) of not having to bear the penalty of having to carry around a heavy engine engine that generates no power for 75% of its working cycle :)

Trent engines weigh in the ball-park of 10 tonnes each.

They are more than phenominally complicated today - I could find out the total weight of the rotors plus the essential stationary bits, but it won't be especially close to 10 tonnes.
So far as effciency is concerned, modern high bypass turbofans only reached parity with piston engines as bypass ratios increased from the 1960/70s.
 
Each engine in our Apaches weighs about 250kg dry, delivers max of 2400 shaft horsepower. And, touching wood, they’re very reliable. Makes petrol and Diesel engines look silly.
 
Each engine in our Apaches weighs about 250kg dry, delivers max of 2400 shaft horsepower. And, touching wood, they’re very reliable. Makes petrol and Diesel engines look silly.

Horses for courses - military engines above all else need a whole raft of things that get labelled as performance, but they have frighteningly short lives before overhaul is needed compared to both civil jets and also diesel engines. You would not look to plough a field using a thoroughbred, or go to sea using marine turbines for anything but emergency or hot pursuit.

Data online for the Apache engines suggest around 2000shp
 


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