In the old days, pilots had only a parachute pack. (In the really old days they might not even have that.) They had to open the canopy manually and jump out.
Today, fighter jets have zero-zero ejection seats. They can save the pilot even at zero airspeed and zero altitude. They do this with solid rockets to eject the pilot upwards.
I would like to know what is the average weight of this system for a single-pilot fighter jet? That way we can compare it's weight to the total weight of the plane and see what fraction it is.
Really the weight would include only the rockets and explosive bolts on the canopy, and I guess the ejection handle too. It would not include the weight of the seat or the pilot, as those have to be there even without an ejection system.