Why air is compressed in Gas Turbine Engines ?
Here is an extremely abbreviated answer to a technologically complex question as it pertains to aircraft operation: As previously noted the density of air being combined with fuel is detrimental in the balance of energy necessary for mechanical operation. As the air is introduced to the compression stage (via ram induction), the stator vanes compress the molecular density of the air, which incidentally cools it, and centrifugal force feeds it to a combustion chamber where it is mixed with an electronically measured output of fuel for immediate combustion and discharge. That discharge (exhaust) provides thrust and upon exit spins the turbine keeping the process going over and over again. At higher altitudes the density of the atmosphere rapidly dwindles to nil. If the air becomes too thin the engine will struggle to breathe and will compensate by introducing more fuel to the mix. As the excess fuel is ignited the oxygen deprived surge will eventually result in a flame-out which is the e
