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SpaceX's Starship Can Launch 400 Starlink Satellites at Once

Accepted submission by takyon at 2019-10-28 16:59:16

SpaceX President and COO Gwynne Shotwell has revealed that Starship can carry 400 Starlinks satellites [] into orbit, up from the 60 recently launched using a Falcon 9 rocket. The cost per launch may be negligible:

Beyond Shotwell's clear confidence that Starlink's satellite technology is far beyond OneWeb and years ahead of Amazon's Project Kuiper clone, she also touched on yet another strength: SpaceX's very own vertically-integrated launch systems. OneWeb plans to launch the vast majority of its Phase 1 constellation on Arianespace's commercial Soyuz rockets, with the launch contract alone expected to cost more than $1B for ~700 satellites.

SpaceX, on the other hand, owns, builds, and operates its own rocket factory and high-performance orbital launch vehicles and is the only company on Earth to have successfully fielded reusable rockets. In short, although Starlink's voracious need for launch capacity will undoubtedly require some major direct investments, a large portion of SpaceX's Starlink launch costs can be perceived as little more than the cost of propellant, work-hours, and recovery fleet operations. Boosters (and hopefully fairings) can be reused ad nauseum and so long as SpaceX sticks to its promise to put customer missions first, the practical opportunity cost of each Starlink launch should be close to zero.

[...] Shotwell revealed that a single Starship-Super Heavy launch should be able to place at least 400 Starlink satellites in orbit – a combined payload mass of ~120 metric tons (265,000 lb). Even if the cost of a Starship launch remained identical to Starlink v0.9's flight-proven Falcon 9, packing almost seven times as many Starlink satellites would singlehandedly cut the relative cost of launch per satellite by more than the 5X figure Musk noted.

In light of this new figure of 400 satellites per individual Starship launch, it's far easier to understand why SpaceX took the otherwise ludicrous step of reserving space for tens of thousands more Starlink satellites []. Even if SpaceX arrives at a worst-case-scenario and is only able to launch Starship-Super Heavy once every 4-8 weeks for the first several years, that could translate to 2400-4800 Starlink satellites placed in orbit every year. Given that 120 tons to LEO is well within Starship's theoretical capabilities without orbital refueling, it's entirely possible that Starship could surpass Falcon 9's Starlink mass-to-orbit almost immediately after it completes its first orbital launch and recovery: a single Starship launch would be equivalent to almost 7 Falcon 9 missions.

The Starlink constellation can begin commercial operations [] with just 360-400 satellites, or 1,200 for global coverage. SpaceX has demonstrated a 610 Mbps connection [] to an in-flight U.S. military C-12 aircraft. SpaceX is planning to launch [] 60 additional Starlink satellites in November, marking the first reuse of a thrice-flown Falcon 9 booster.

Also at CNBC [].

Previously: Third Time's the Charm! SpaceX Launch Good; Starlink Satellite Deployment Coming Up [Updated] []
SpaceX Provides Update on Starship with Assembled Prototype as the Backdrop []
SpaceX Requests Permission to Launch an Additional 30,000 Starlink Satellites, to a Total of 42,000+ []
Elon Musk Sends Tweet Via SpaceX's Starlink Satellite Broadband []
SpaceX: Land Starship on Moon Before 2022, Then Do Cargo Runs for 2024 Human Landing []

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