GalaxyFlyer wrote:It’s burning fuel, not detonating it.
jetstar wrote:I always like to explain the basics of a jet engine comparing it to a blow torch, once the fuel is ignited the fire remains lit until the fuel is shut off, increase the amount of fuel, the larger the flame.
the fuel burning section of a running jet turbine engine
Wacker1000 wrote:Some of this energy is converted into mechanical energy in the turbine and the rest goes to waste out of tailpipe.
rjsampson wrote:Energy going out the tailpipe is hardly wasted: It provides THRUST.
GalaxyFlyer wrote:If you look at the velocities of true explosives and deflagrating fuels, the line is very broad—orders of magnitude.
GalaxyFlyer wrote:Actually, the thrust that causes the plane to go forward is almost entirely in the expanding gases in the turbine section. The jet efflux does little to propel the plane, it’s the reaction inside the engine that causes thrust.
GalaxyFlyer wrote:No, it is not correct as there are no explosions. It’s burning fuel, not detonating it.
convair880mfan wrote:Would it be correct or incorrect to describe what is happening in the fuel burning section of a running jet turbine engine as a "continuous explosion."?
I am thinking that piston engines are often described as operating by means of regular but intermittent explosions.
Thanks for any and all responses.
IFlyVeryLittle wrote:So, the roar we hear from an engine is largely the sound of rushing air or the sound of fuel very-nearly-but-not-quite exploding?
zeke wrote:I understand it is mainly due to the shear between the high speed exhaust gas and the “stationary” atmosphere. To reduce this noise various forms of mixing is used to disrupt this shear layer, or to make the surface area between the two layers larger.
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