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SU34 has two Turbofan engines, with adjustable nozzeles.
These engines allow to accelerate the plane to the speed of 1900 km/h.
Ufa engine industrial association and MMPP "SALUT" together produce this type of engine.
We went there to learn how the engines of war aircrafts are being tested.
Modern aviation engine is the most comlex element in all design of the plane.
It consists of 36000 different details.
And all these details are being produced at one place - here - in MMPP "SALUT" in Moscow.
To produce only one aviation engine there is need the work of 20000 hands of the workers.
Before the engine will be installed on the plane, it must be tested in all modes, including at afterburning. It's made on special stand.
Here engine is connecting to the system of fuel supply and to special measuring complex.
All the data of indicators and system of control are in special point of tests control.
So let's begin!
Put the lever on small gas!
Is this the first mark?
Yes, first mark!
We lift it up and fix.
And press - start!
We press - START.
I"m hearing pleasant sound!
First several seconds turbo-starter begins to rotate the turbine and with the help of that creates high pressure in combustion chamber
After that the ignition of the fuel happens.Now we are at "small gas" level.
All indicators are in norm!
Yes, now slowly we will lift up the lever.
93
That's enough!
For five minutes the engine will get warm. There must be now vibration, the oil must be warm, this engine is like a sportsman before the run.
When the air gets into the engine, it first gets into the compressor of low pressure.
After that the stream is divided into two parts.
First part goes through external contour to combustion chamber, second part gets into the chamber of high pressure.
Compressed air gets into the combustion chamber, where the kerosene (fuel) comes too.
Fuel-air mix is burning and increases the temberature in the combustion chamber to 1600 degrees Celsius.
Thermal expansion of an air forces the turbine to rotate with very high speed, and with the help of all this is being created the Jet Thrust.
We are bringing the engine to the maximum turns.
Working in this mode the engine uses more than 5 tonn of kerosene, at the same time the Thrust is less than 7000 kg
But when the 'afterburner' begins to work, both this parameters increase very much.
We turn full gas on, forcing.
What a stream!! This is the jet stream!
Consumption of fuel has grown and reached 22000 kilogramms per hour
That means that two engines of SU34 are able to use almost 50 tons of aviation kerosene during one hour.
The Thrust is 11.5 tonn
The Thrust is 11.5 tons, this is the reason why the SU34 is able to accelerate the speed and reach supersonic
I'm slowly turning off.
Now we'll imitate the situation - the enemy is trying to fly away from us, and we need not to lose him.
Let's speed up -from "small gas" to "forcing", and we will see how much time it will take
Go, go, go!
It's very easy to fry the sausages or chicken there
That's all, easy up.
To get forcing mode, the engine needed only some seconds.
Forcing chamber with regulable nozzle allow to get more than 12000 kilogram of Thrust.