Rockets.
physics puzzle no.2
- Thread starter noseall
- Start date
Rockets.
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Jets do not work in space, rockets do.
The only difference being, rockets provide their own oxygen.
Both work on Newtons third law of motion
Yes, I made that too simple!
In any case the current aeroplane engines get 70% of their thrust from the fan acting on the air. The remainder is the thrust from the jet part which although it needs air to burn does not use the air to provide the jet thrust.
Tony
In any case the current aeroplane engines get 70% of their thrust from the fan acting on the air. The remainder is the thrust from the jet part which although it needs air to burn does not use the air to provide the jet thrust.
Tony
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What ARE you talking about Tony?
Bear in mind that more conventional turbojets/fans with reheat can double their maximum dry thrust simply by burning fuel mixed with air from the fan which has bypassed the core stages of the compressor ... This expanded airflow produces its thrust at the nozzle.
Take it a stage further ... Ramjets have no compressor at all and produce ALL their thrust like reheat ... Though they need to be going pretty quick in the first place to get the airflow suitably compressed that it will burn with the fuel.
MW
The airflow through a gas turbine is a crucial element at all stages including the nozzle ... If there were no airflow to mix with the fuel, burn, expand and pass over the turbine there would be no turning fan producing your 70% of thrust and there would be no reaction against the nozzle ... So I'm not quite sure what it is you are saying ... Perhaps you could expand and provide a thrust to your point
Bear in mind that more conventional turbojets/fans with reheat can double their maximum dry thrust simply by burning fuel mixed with air from the fan which has bypassed the core stages of the compressor ... This expanded airflow produces its thrust at the nozzle.
Take it a stage further ... Ramjets have no compressor at all and produce ALL their thrust like reheat ... Though they need to be going pretty quick in the first place to get the airflow suitably compressed that it will burn with the fuel.
MW
