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…
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.
The size of the combustion chamber is determined by the requirement of the rate of at release. The heat release rate is expressed as Q.
The velocity, relative to a rocket at which exhaust gases leave the nozzle of the rocket's engine.