Dependence of propulsion efficiency (η) upon the vehicle speed/exhaust velocity ratio (v/vₑ) for air-breathing jet & rocket engines. Efficiency increases as vₑ
Attribution-Share Alike 4.0 truetrue English Propulsive efficiency comparison for various gas turbine engine configurations French Comparaison des rendements
set used is from Brinkman, N.D.: Ethanol Fuel-A Single-Cylinder Engine Study of Efficiency and Exhaust Emissions. SAE transactions, *90*, 1410-1424. (1981)
engine
has a greater efficiency than an
irreversible engine acting on the
same reservoirs, and that all
reversible engines have the same
efficiency for