Raptor 3 Engines, Three Enlarged Grid Fins, Orbital Refueling Connections, 22 Starlink Simulators And A Brand New Launch Pad. SpaceX Flight 12 Is Not A Test. It Is A Statement.
This article was compiled and made possible with the help of the following source(s): Digital Galaxy, TESLARATI, Spaceflight Now, NewsBytes and Complex.
SpaceX builds rockets. It also occasionally rewrites what rockets are capable of. On May 19, 2026, at 6:30pm EDT from Starbase, Texas, Starship V3 will attempt its first flight, and the list of changes SpaceX disclosed in the days before launch makes clear that this is not an incremental improvement on what came before.
The upcoming mission will be the twelfth integrated test flight of Starship, yet this launch represents far more than another routine demonstration. Nearly every major system on the rocket has been modified, from the engine architecture to the aerodynamic surfaces used during descent.
Start with the engines. Raptor 3 engines deliver increased thrust, with sea-level variants now producing 250 tonnes-force, up from 230, while vacuum engines produce 275 tonnes-force, up from 258. Sensors and controllers are now internally integrated and covered by engine thermal protection, eliminating the need for individual engine shrouds.
Mass of the Raptor sea-level engines has been reduced to 1,525 kilograms from 1,630 kilograms. Overall vehicle-level mass savings reach approximately one tonne per engine through simplification of the engine itself, vehicle-side commodities and supporting hardware.
The Super Heavy booster has also been fundamentally redesigned. Earlier versions of the rocket used four grid fins to control atmospheric descent. Starship V3 reduces that number to three, though each fin is significantly larger and structurally reinforced.
SpaceX explained that these fins include a new catch point and have been re-clocked on the booster to support vehicle lift and catch operations, and have also been lowered to reduce heat exposure from Starship’s engines during hot-staging.
The upper stage Ship has been rebuilt for something beyond low Earth orbit. SpaceX described the upgrades as designed to enable a new Raptor startup method, increase propellant tank volume, and improve the reaction control system used for steering while in flight.
The spacecraft now includes dedicated propellant feed connections intended for fuel transfer operations in space, which will eventually allow Starship to refill its tanks in orbit before traveling toward the moon or Mars.
The new Starship is capable of longer duration flights, and there are now four docking drogues in place to allow, in the near future, docking with other Starships, along with propellant feed connections for ship-to-ship propellant transfer.
Both the Super Heavy booster and the Starship spacecraft now operate thanks to new avionics imagined with high flight-rate, full reusability and enhanced reliability in mind. Batteries, inverters and high-voltage electrical distribution systems deliver 9 megawatts of peak power between the two vehicles.
Flight 12 will also mark the debut of Launch Pad 2 at Starbase. SpaceX says the upgraded facility can fuel Starship faster and includes revised chopstick recovery hardware for future booster catches. Despite the new technology, SpaceX said this particular booster will not attempt a return catch because it is the first test flight for the redesigned system.
The mission profile itself is ambitious. Ship 39 will deploy 22 Starlink simulators, similar in size to next-generation Starlink satellites, into the same suborbital trajectory as the Ship itself. The last two satellites deployed will scan Starship’s heat shield and transmit imagery down to operators to test methods of analyzing Starship’s heat shield readiness for return to launch site on future missions. A relight of a single Raptor engine while in space is also planned.
At 124.4 metres tall with a payload capacity of 100,000 kilograms to low Earth orbit and 80,800 kilonewtons of liftoff thrust, Starship V3 is the most capable rocket ever built.
Following stage separation, the Ship upper stage will continue eastward on a suborbital trajectory before splashing down in the Indian Ocean roughly 65 minutes after launch. The booster will perform a controlled descent toward the Gulf of Mexico.
SpaceX is building toward NASA’s Artemis Moon missions, orbital refueling and eventually Mars. Flight 12 is the foundation everything else gets built on.
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