Brayton Cycle is named after American Engineer George Brayton.
- A theoretical thermodynamic cycle describing the working of a constant pressure heat engine.
- Gas turbines and Air-breathing jet engines use this cycle.
- It is also called Joule cycle.
- It consists of two reversible adiabatic or isentropic process and two constant pressure process.
Efficiency is given by
η = 1- [1/rp((γ-1)/γ)]
where rp is Pressure Ratio and Gamma (γ) is Heat Capacities (Cp/Cv) Ratio