Thermodynamic cycle of jet engine

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Discussion Overview

The discussion revolves around the selection of a thermodynamic cycle for designing a new jet engine, focusing on the relevant parameters and considerations involved in the design process. The scope includes theoretical aspects of thermodynamics as applied to jet engine design.

Discussion Character

  • Technical explanation, Conceptual clarification, Debate/contested

Main Points Raised

  • One participant questions how to choose a thermodynamic cycle for a new jet engine and what parameters are important in this selection.
  • Another participant asserts that gas turbine engines are fundamentally described by the Brayton Cycle, suggesting that deviating from this cycle would not result in a jet engine.
  • It is noted that while the Brayton Cycle is essential, the operating parameters depend on specific requirements such as the type of aircraft, required speed, thrust, altitude, and the type of jet engine being designed.
  • A participant highlights critical parameters for design, including combustion chamber temperature and compression ratio, emphasizing their importance to avoid turbine damage.

Areas of Agreement / Disagreement

Participants generally agree on the significance of the Brayton Cycle in jet engine design, but there are varying opinions on the specific parameters and considerations that should be prioritized in the design process.

Contextual Notes

Some assumptions about the specific requirements for different aircraft types and operational conditions remain unspecified, which may influence the design parameters discussed.

vincentryan
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How to choose thermodynamic cycle for designing new jet engine?
While designing new jet engine what parameters are important for choosing thermodynamic cycle?
what other parameters are important for jet engine designing?
 
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Gas Turbine (Jet) Engines are described by the Brayton Cycle:
http://en.wikipedia.org/wiki/Brayton_cycle

You don't really get to choose what cycle you're using. If you use a different cycle, then you have something that's not a jet engine. Check out the link to get some more information on what happens inside.
 
as minger said you have to keep in mind the brayton cycle while designing the jet engine ,
but the operating parameters are depending upon your initial requirements, i.e. for which aircraft are you designing, what is the speed of it, how much force required to propel it, its altitude, which type of jet engine you using, etc.

from that you have some parameters of the nods of the cycle and from that you an go further.
 
Brayton Cycle.
Parameters for designing : Combustion chamber temperature ( you do not want to damage
your turbine ), Compression ratio. I think those two are quite important.
 

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