Nacelles are structures that house the propulsion system. Nacelles can be
Fuel mass fraction is the ratio of fuel mass flow to the total mass flow of a fuel mixture. If an air flow is fuel free, the fuel mass fraction is zero
The weight escalation factor (WEF) is the rate of WTO growth with
respect to additional fixed weight.
In aerospace engineering, the propellant mass fraction is the portion of a vehicle’s mass which does not reach the destination, usually used as a measure of the vehicle’s performance.
Jet velocity is the highest velocity signal obtained from release point of Nozzle.