Exhaust velocity measures how fast combustion products are expelled from an engine's nozzle. It is a primary indicator of engine efficiency, directly dictating the specific impulse and the total thrust generated for a given mass flow rate. Higher speeds mean the vehicle gets more momentum out of every kilogram of fuel burned.
We need to increase the chamber pressure to hit our target exhaust velocity.
Related terms
Delta-v
The total change in velocity a spacecraft can achieve using its available propellant.
Burn
A scheduled firing of a spacecraft propulsion system to alter its trajectory.
Chemical rocket
A propulsion system that generates thrust through the exothermic reaction of chemical propellants.
Ion engine
A spacecraft thruster that accelerates charged particles using an electric field to generate thrust.