SpaceX
DraftFounded in 2002, and now the dominant launch provider by flight count and by mass to orbit, and the largest satellite operator by satellite count.
- Founded
- 2002
- Vehicles
- Falcon 9, Falcon Heavy, Starship in development
- Spacecraft
- Dragon for cargo and crew, Starlink satellites
- Structural position
- Both the largest launch provider and its own largest launch customer
Falcon 9
The vehicle that established propulsive booster recovery as routine.
| Property | Value |
|---|---|
| Payload to LEO | 22.8 t expendable; roughly 17.5 t with droneship recovery |
| Payload to GTO | 8.3 t expendable |
| Engines | Nine Merlin on the first stage, one vacuum Merlin on the second |
| Propellant | Kerolox |
| Cycle | Gas generator |
| Recovery | First stage and fairings; second stage expended |
Individual boosters have flown more than twenty times. The properties that made this work, rather than the fact of reuse itself, are covered in Reusable launch systems: an entry burn that removes the need for a dedicated heat shield, engines designed for repeated firing, dry landing rather than seawater recovery, and a flight rate high enough to amortise the recovery infrastructure.
Falcon Heavy uses three Falcon 9 first stages and reaches 63.8 t to LEO expendable. It flies rarely, because few payloads need it and Falcon 9 covers most of the market.
Starship
A fully reusable super-heavy vehicle under development, and the largest technical bet in the industry.
| Element | Description |
|---|---|
| Super Heavy | First stage, roughly 33 Raptor engines |
| Ship | Second stage and spacecraft, intended to be reusable |
| Raptor | Full-flow staged combustion, methalox; the first of that cycle to fly |
| Structure | Stainless steel rather than composites or aluminium-lithium |
Two choices distinguish it. Methalox rather than kerolox, for the reasons in Chemical propulsion: methane does not coke, which matters for engine reuse, and it can be manufactured on Mars. And stainless steel, which is heavier than the alternatives but cheap, weldable in the open, and retains strength at high temperature, reducing the thermal protection burden.
The programme’s critical dependency is orbital cryogenic refuelling, which has never been demonstrated at scale. Starship in low Earth orbit lacks the propellant to reach the Moon and return, so a lunar mission requires a series of tanker flights and propellant transfer in microgravity. This is on the critical path for Artemis and is the most consequential unproven capability in current human spaceflight. See Refueling and propellant depots.
Starlink
The largest satellite constellation ever operated, and the reason the company’s launch cadence is largely self-supplied.
| Property | Value |
|---|---|
| Orbit | Shells around 550 km, mostly at 53 degrees |
| Scale | Thousands of satellites operational |
| User link | Ku-band to an electronically steered phased array terminal |
| Gateway link | Ka-band |
| Inter-satellite links | Optical, which removes the requirement for a gateway in view |
| Propellant | Krypton on earlier satellites, argon on later ones |
The move to argon Hall thrusters is the first operational use at scale, and it was an economic decision rather than a technical improvement: argon performs worse than xenon and costs far less, which matters when thousands of satellites are flown. See Hall thrusters.
Two elements deserve emphasis because they are frequently underweighted.
The user terminal is arguably the harder achievement than the satellites. A consumer-priced electronically steered phased array that tracks fast-moving satellites and hands over between them without interrupting a session did not previously exist, and the architecture depends on it.
Optical inter-satellite links solve the gateway problem, allowing service over oceans and polar regions where no ground station can be placed. See Communications satellites.
Dragon
Cargo Dragon flew under the COTS and CRS programmes; Crew Dragon under Commercial Crew. Both were developed under firm fixed-price contracts with NASA specifying outcomes rather than designs, which is the procurement model discussed in Space agencies.
Dragon is the only operational vehicle returning significant downmass from the ISS, which matters more than it appears: most cargo vehicles are destroyed on re-entry, so returning samples and failed hardware for analysis depends on it.
The structural position
The company’s competitive position follows from a combination that is difficult to replicate.
| Factor | Effect |
|---|---|
| Vertical integration | Engines, vehicles, satellites and terminals built in-house |
| Captive demand | Starlink supplies launch cadence independent of the external market |
| Reuse plus cadence | Both conditions for reuse economics met simultaneously |
| Government anchor | COTS, CRS, Commercial Crew and national security contracts funded development |
The captive demand term is the structurally decisive one. A launch provider whose largest customer is itself decouples its flight rate from external market demand, which sustains the cadence loop described in The launch market regardless of what competitors or customers do.
This raises questions that are commercial rather than technical: pricing power in a concentrated market, and the position of satellite operators who must buy launch from their largest competitor. These are noted in Commercial providers and are live concerns for regulators.
References
- SpaceX Falcon User’s Guide, current revision.
- FAA Office of Commercial Space Transportation launch records.
- NASA Commercial Crew and Commercial Resupply Services programme documentation.
- FCC filings for Starlink constellation parameters and modifications.