Link here. This five-part article is a detailed review of SpaceX’s development of its new completely reusable heavy-lift rocket, with Super Heavy being the first stage booster and Starship being the orbital upper stage capable of returning to Earth, landing vertically, and being reused.
From the article’s conclusion:
The Starship program is unique and one of the most ambitious in the history of rocketry. The design has now gone through at least twelve known versions and four different names!
Its first version was a single or triple-core rocket back in 2013, which has evolved into the single-core stainless steel Starship design under construction today. Even as the design’s size has fluctuated dramatically, its repertoire of missions and roles has expanded.
It started out as a rocket meant to colonize Mars but now is envisioned as an all-purpose carrier rocket to replace the Falcon 9 rocket family. It is expected to launch satellites into Earth orbit, fly people point-to-point on Earth, ferry cargo and crew to and from the Moon, in addition to its original role as a Mars colonization vehicle.
Two significant points: First, SpaceX as a company has shown itself remarkably capable of shifting design and development tracks, on a dime, if it realized there was a better way to do things. Second, the company has also smartly rethought this big rocket’s reason for existing. In the beginning they focused on Musk’s goal of getting to Mars. That concept however had few if no customers, and therefore have little chance of producing profits. Overtime the company adjusted their design goals to expand the rocket’s purposes so that its capabilities would serve as many customers as possible.
The result is a useful product that still could take people to Mars.
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