SpaceX's Next Steps after Starship Test: More Hops, then 20 km "Skydiver" Landing
takyon writes:
SpaceX's next Starship starts to take shape as Elon Musk talks next steps
Less than a day after SpaceX successfully hopped a full-scale Starship prototype for the first time, the company has begun stacking the next rocket and Elon Musk is talking next steps.
[...] According to Musk, SpaceX intends to perform at least several more smaller hops (a la SN5) "to smooth out [the] launch process." It's unclear which prototype(s) will be involved in that series of hops but after SpaceX is satisfied with the state of launch operations, the plan is to "go high altitude with body flaps." Based on past comments, it's safe to assume that Musk is referring to a plan to launch a Starship to 20 km (~12 mi).
After reaching 20 km, Starship would orient itself belly down - a bit like a skydiver - and quite literally fall its way to ~1 km altitude before attempting an aggressive Raptor-powered pitch-over maneuver and last-second landing. By using Earth's atmosphere much like a skydiver trying to slow down, Starship will theoretically be able to dramatically reduce the amount of propellant it needs to land.
That high-altitude launch and landing demonstration will also be the first time a Starship truly needs aerodynamic control surfaces (i.e. "body flaps") to safely complete a flight test. According to NASASpaceflight.com info, Starship SN8 - also the first full-scale prototype to be built out of a different steel alloy - will be the first ship to receive functional flaps and a nosecone. If initial tests go according to plan, SN8 will also be the first ship to attempt a skydiver-style landing as described above. As far as full-scale aerodynamics goes, such a landing is loosely understood at best. For an orbital-class spacecraft, it's even more of a wildcard.
Regardless, just hours after Starship SN5's successful hop debut, SpaceX began stacking the first of several already finished Starship SN8 sections. Based on the assembly of past prototypes, the ship's tank section could reach its full height just a few weeks from now, while subsequent nosecone and flap installations are uncharted territory.
Previously: SpaceX Completes Static Fire of Starship Prototype, Will Hop Next
SpaceX's Starship SN5 Conducts Successful 150-Meter Flight Test
[Ed. note: Check out https://forum.nasaspaceflight.com/index.php?topic=51332.760 for developments at Boca Chica. Lots of pictures and videos of the sites (launch and construction), deliveries, component construction (e.g. nosecone, thrust ring, main body, etc.), and assembly of these components into actual Starships. And the occasional test firing or launch, too!]
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