Rocket Staging

InRocket staging Sect.  1.3.1 , we found out that there are limits to the obtainable payload massPayload mass because of the finite structural massMassstructural (ratio). This limit is crucial for the construction of a rocket. If a rocket is to reach the low Earth orbit, a propulsion demand of about 9 km s−1 has to be considered (see end of Sect.  6.4.7 ), which is at the limit of feasibility for today’s chemical propulsions.