Six additional, non-gimbaled, vacuum-optimized Raptors (Raptor Vacuum) would provide primary thrust for the second stage, for a total of nine engines. [65][21] Raptor Vacuums were envisioned to contribute a specific impulse of 382 s (3,750 m/s), using a much larger nozzle.

Raptor Vacuum (RVac) is a variant of Raptor with an extended, regeneratively-cooled nozzle for higher specific impulse in the vacuum of space. The vacuum-optimized Raptor engine is aiming for a specific impulse of ~380 s (3,700 m/s).

The Raptor engine is a reusable methane-oxygen staged-combustion engine that powers the Starship system and has twice the thrust of the Falcon 9 Merlin engine. Starship will be powered by six engines, three Raptor engines, and three Raptor Vacuum (RVac) engines, which are designed for use in the vacuum of space.

2024年9月8日 · As mentioned, there are two different versions of each generation Raptor engine: the Sea Level model and the RVac model. The recent unveiling was only for the Sea Level …

2020年9月25日 · An important piece of SpaceX's new Starship megarocket just got its first workout. The first vacuum Raptor — the in-space version of Starship's Raptor engine — blazed up in a debut test...

2025年1月22日 · Revised elements of the Block 2 upper stage include a new multifeedline fuel system for the vehicle’s Raptor vacuum engines and several redesigned vents. The Starship powered off the launchpad ...

A day after revealing the completion of the 200th Falcon upper stage and Merlin Vacuum engine, SpaceX has announced that it also recently finished building Starship’s 200th upgraded Raptor...

2021年10月22日 · SpaceX took another step on Thursday evening toward validating the rocket engine technology that will power its Starship rocket. For the first time, engineers at the company ignited a vacuum...

2023年9月18日 · NASA announced last week that SpaceX has now demonstrated an important capability of the vacuum-optimized Raptor engine that will be used for the lander: an extreme cold start.

2023年9月15日 · In preparation of landing humans on the Moon as part of the ongoing Artemis program, SpaceX recently ran a test of one of its lunar lander engines while simulating the cold temperatures of...