The Long March 10 is larger and more powerful on paper than Vulcan Centaur, but it has not yet reached Earth orbit. China’s Moon rocket stands 92.5 meters tall, generates roughly 26,000 kilonewtons of liftoff thrust, and is designed to deliver 70,000 kilograms to low Earth orbit. United Launch Alliance (ULA) builds Vulcan Centaur as a smaller vehicle standing 61.6 to 67.3 meters tall with up to 27,200 kilograms of payload capacity, but Vulcan Centaur has flown operational missions since its first orbital launch in January 2024.
The two vehicles were designed around completely different requirements. Vulcan Centaur exists to secure satellite access for the United States Space Force and commercial satellite constellations, while the three-core Long March 10 is dedicated to carrying Chinese crews and landers toward the Moon.
The Comparison at a Glance
| Measure | Vulcan Centaur | Long March 10 |
|---|---|---|
| Builder | United Launch Alliance (Boeing and Lockheed Martin) | China Academy of Launch Vehicle Technology (CALT) |
| First orbital flight status | Operational (flown January 8, 2024) | Not yet flown to orbit (as of September 2026) |
| Height | 61.6 meters (standard) to 67.3 meters (extended) | About 92.5 meters |
| Liftoff mass | Not published as a single static figure | About 2,189 metric tons |
| Liftoff thrust | Roughly 1.1 million to 3.3 million lbf (4,900 to 14,700 kN) | Roughly 26,000 kN (about 5.8 million lbf, derived conversion) |
| First-stage propulsion | Two BE-4 engines (methane/LOX) plus 0 to 6 solid boosters | 21 YF-100K engines (kerosene/LOX) across three 5-meter cores |
| Upper stage | Centaur V with two RL10 engines (hydrogen/LOX) | Second stage (two YF-100M); third stage (three YF-75E) |
| Payload to LEO | Up to roughly 27,200 kg (VC6 Upgrade configuration) | 70,000 kg |
| Payload beyond LEO | Up to roughly 15,300 kg to GTO (VC6 Upgrade) | 27,000 kg toward trans-lunar injection |
| Reusability status | Fully expendable (SMART engine recovery proposed) | Expendable in three-core crewed configuration |
| Primary mission | US national security and commercial satellite launch | Chinese crewed lunar landing program |
Flight History Separates an Operational Booster from a Development Program
Vulcan Centaur has achieved orbital flight status and entered active service, while Long March 10 has not yet attempted an orbital launch. That operational distinction is the most important division between the two rockets as of September 2026. A launch vehicle that has delivered operational payloads to orbit has retired flight risks that ground-test articles still retain.
United Launch Alliance conducted the inaugural flight of Vulcan Centaur on January 8, 2024, from Cape Canaveral Space Force Station in Florida. That certification mission successfully delivered its primary payload into orbit, demonstrating the ignition and flight mechanics of the newly designed booster stage and the Centaur V upper stage. Vulcan Centaur has flown subsequent operational missions for both government and commercial manifest requirements, establishing a baseline of flown flight data.
China’s development program for the three-core Long March 10 follows a different timeline at the Wenchang Space Launch Site on Hainan Island. The China Academy of Launch Vehicle Technology completed tethered ground-ignition tests of the core propulsion system before conducting a low-altitude demonstration flight on 11 February 2026, as reported by CGTN. That test verified low-speed atmospheric flight characteristics and control software for the booster stage, but it was not an orbital mission.
The flight testing record also includes an offshoot variant that should not be confused with the crewed lunar configuration. On 10 July 2026, China tested the single-core Long March 10B variant, recovering its first stage at sea as documented by SpaceNews. The Long March 10B is an uncrewed, single-stick rocket designed for low Earth orbit satellite deployment. Its recovery demonstrated stage-return technology for that specific vehicle, but the heavy three-core Long March 10 being evaluated for lunar missions remains unflown to orbit.
When evaluating vulcan vs long march 10, operational readiness stands on the American side of the ledger. Vulcan Centaur is an active booster launching satellites. Long March 10 remains an orbital development project progressing through its qualification milestones.
Scale and Propulsion Architecture
The physical scale of Long March 10 substantially exceeds Vulcan Centaur across mass, height, and total thrust. A direct dimensional comparison makes the structural disparity clear to observers asking is long march 10 bigger than vulcan.
Long March 10 stands approximately 92.5 meters tall with a liftoff mass of about 2,189 metric tons. Its main propulsion stage consists of three identical 5-meter-diameter cores arranged side by side, resembling the tri-core configuration used on heavy-lift rockets like Falcon Heavy. Each of the three cores houses seven YF-100K engines burning kerosene and liquid oxygen (LOX), giving the rocket a total of 21 engines firing simultaneously at liftoff. The combined sea-level thrust generated by this cluster is roughly 26,000 kilonewtons. Using standard arithmetic conversion (one kilonewton equals approximately 224.8 pounds of force), this equates to roughly 5.8 million pounds of force. This converted imperial figure is derived mathematical arithmetic rather than a separately published specification from Chinese state agencies.
Vulcan Centaur uses a single-core booster structure with a diameter of 5.4 meters, standing between 61.6 meters with a standard payload fairing and 67.3 meters with an extended fairing. Its primary propulsion comes from two BE-4 engines developed by Blue Origin, which burn liquefied natural gas (liquid methane) and liquid oxygen. A baseline Vulcan Centaur flying without solid rocket boosters generates roughly 1.1 million pounds of force at liftoff from those two main engines alone.
To handle heavier satellite payloads, United Launch Alliance attaches strap-on solid rocket boosters manufactured by Northrop Grumman. The rocket can fly in several designated configurations:
- Zero solid rocket boosters (VC0) for lighter payloads to low Earth orbit (LEO).
- Two solid rocket boosters (VC2) for mid-weight national security missions.
- Four solid rocket boosters (VC4) for high-energy orbital deployments.
- Six GEM-63XL solid rocket boosters (VC6) for maximum lift capacity.
In its maximum VC6 configuration, Vulcan Centaur produces up to approximately 3.3 million pounds of force at liftoff. Even in this six-booster arrangement, the vehicle generates only about 57 percent of the liftoff thrust projected for the three-core Long March 10. The Chinese booster requires that power because it must lift more than 2,000 tons of propellant and dry structure off the pad to reach escape velocity.
The two vehicles also diverge sharply in upper-stage propulsion. Vulcan Centaur uses the Centaur V upper stage, powered by two RL10 engines burning liquid hydrogen and liquid oxygen. The RL10 engine family has decades of operational flight history, providing high specific impulse efficiency and the ability to restart multiple times after long coast phases lasting several hours. This capability enables precise orbital insertions directly into geostationary orbit without requiring the satellite to burn its own fuel to raise its orbit.
Long March 10 relies on a three-stage architecture for its lunar missions. The second stage uses two YF-100M engines burning kerosene and liquid oxygen. The third stage uses three YF-75E engines burning liquid hydrogen and liquid oxygen. This upper stage executes the high-energy burns required to send payloads out of Earth orbit toward the Moon.
Payload Capacities Reflect Divergent Mission Architectures
The payload capacities of the two rockets reflect the distinct operational jobs they were engineered to perform. Long March 10 was created specifically as a deep-space exploration launcher, whereas Vulcan Centaur was optimized for orbital satellite deployment.
Long March 10 is rated to deliver 70,000 kilograms (70 metric tons) into low Earth orbit and approximately 27,000 kilograms (27 metric tons) into a trans-lunar injection trajectory. China’s space program designed this lift capability around a two-launch lunar architecture. The nation has stated a formal goal of landing astronauts on the Moon before 2030. To accomplish this without building a single Saturn V-class super-heavy rocket, China plans to launch the Mengzhou crew spacecraft on one Long March 10 and the Lanyue lunar lander on a second Long March 10. The two spacecraft will travel separately to lunar orbit, dock together, and transfer the crew for the landing descent. The 27-metric-ton trans-lunar payload capacity is tailored precisely to the mass of each spacecraft element.
Vulcan Centaur’s payload envelope is scaled for orbital space access. In its most capable VC6 Upgrade configuration, Vulcan Centaur can deliver up to approximately 27,200 kilograms to low Earth orbit and up to roughly 15,300 kilograms to geostationary transfer orbit (GTO). It has no crew-carrying mandate and is not designed to support lunar landing architecture.
The primary manifest for Vulcan Centaur consists of three customer bases:
- The United States Space Force, which contracted Vulcan Centaur for National Security Space Launch missions requiring complex orbital insertions.
- Amazon’s Project Kuiper, which booked dozens of commercial Vulcan launches to deploy a broadband satellite constellation into low Earth orbit.
- Commercial spacecraft developers, including Sierra Space, which selected Vulcan Centaur to launch the Dream Chaser uncrewed cargo spaceplane to the International Space Station.
Comparing raw payload numbers without considering mission targets creates a distorted picture. Long March 10 lifts more than double Vulcan Centaur’s mass to low Earth orbit because sending a crewed capsule or lunar lander toward the Moon requires massive propellant reserves. Vulcan Centaur carries less total mass, but its high-energy Centaur V stage can place national-security satellites directly into high-altitude orbits that Long March 10 is not designed to service.
Reusability and Hardware Recovery Approaches
Neither rocket provides operational reusability in the heavy-lift configurations compared here. Both vehicles operate primarily as expendable hardware, discarding their booster stages and engines during flight.
Vulcan Centaur flies as an expendable booster as of 2026. Every launch drops the main booster core, the two BE-4 engines, any attached GEM-63XL solid rocket motors, and the Centaur V stage into the ocean. United Launch Alliance has discussed a conceptual recovery architecture named Sensible Modular Autonomous Recovery Technology (SMART). Under the SMART proposal, the thrust structure containing the two BE-4 engines would detach from the booster propellant tanks after burnout, re-enter the atmosphere protected by an inflatable heat shield, deploy parachutes, and be captured mid-air or recovered from the water. United Launch Alliance has not implemented or flight-tested this recovery system on operational Vulcan missions, leaving the current vehicle fully expendable.
The three-core Long March 10 is similarly designed as an expendable vehicle for crewed lunar missions. The 21 YF-100K engines and three 5-meter booster cores will be discarded after staging, falling into designated drop zones in the ocean. The structural margins and fuel reserves needed to propel 27 metric tons toward trans-lunar injection leave no excess payload capacity for landing legs, grid fins, or recovery propellant on the lunar variant.
Recovery hardware does exist within the broader Long March 10 development tree, but it belongs to an alternate variant. The China Academy of Launch Vehicle Technology developed the Long March 10B as a single-core vehicle with grid fins and landing legs. As demonstrated during its test on 10 July 2026, the 10B is designed to return its booster to an offshore landing platform for uncrewed satellite launches. That sea recovery represents a significant technical milestone for Chinese rocketry, but it applies to the single-stick commercial variant, not the heavy three-core Moon rocket.
Why Observers Compare Two Rockets Built for Different Jobs
Defense analysts and space policy researchers compare Vulcan Centaur and Long March 10 because both vehicles serve as the strategic bellwethers of their respective national launch capabilities. They do not compete against each other for commercial satellite contracts, nor do they bid on the same government manifests. The comparison exists at the level of geopolitical space capability.
For the United States, Vulcan Centaur represents assured access to space for high-priority defense assets. The Department of Defense requires two independent launch systems capable of deploying national security satellites to prevent a ground halt of one rocket fleet from stranding critical military infrastructure. Vulcan Centaur shares that burden with SpaceX’s Falcon family. If Vulcan Centaur encounters production delays or flight anomalies, American national security space architecture experiences direct launch bottlenecks. Detailed analysis of Vulcan Centaur’s sibling heavy-lift vehicles can be explored on the Vulcan Centaur vs. New Glenn page.
For China, the three-core Long March 10 is the linchpin of the nation’s crewed lunar timeline. If Long March 10 experiences extended testing delays or engine qualification failures, China’s stated timeline of landing astronauts on the Moon before 2030 becomes unachievable. The entire lunar architecture, from the Mengzhou spacecraft to the Lanyue lander, is dimensioned around the mass limits of this rocket. The wider context of China’s lunar infrastructure is detailed on the China Moon Landing 2030 page.
Examining ula vulcan vs china long march 10 is a comparison of two national priorities. The American vehicle prioritizes operational reliability for defense payloads in Earth orbit. The Chinese vehicle prioritizes heavy-lift mass performance to execute an international space prestige mission to the lunar surface.
Evaluating Operational Flight Heritage Against Projected Capability
Choosing how to evaluate Vulcan Centaur against Long March 10 depends on whether the assessment prioritizes proven flight operations or raw lift capacity.
Vulcan Centaur wins on operational status and mission execution. It is a certified, flown rocket with real flight data, operational hardware production, and active launch manifests for the US military and commercial satellite operators. For any mission requirement that exists in the real world today, Vulcan Centaur is a functioning launch vehicle, whereas the three-core Long March 10 remains an unflown development program. Readers looking for a complete vehicle breakdown can review the Vulcan rocket guide.
Long March 10 wins on paper performance and total mission energy. If its flight test program proceeds through successful orbital qualification, it will enter service as a far larger and more capable rocket than Vulcan Centaur in terms of raw thrust and payload mass. It can send entire spacecraft stacks toward the Moon, a capability far outside Vulcan Centaur’s design scope. Readers tracking China’s super-heavy vehicle development can review the Long March 10 explained guide and the Long March 10 vs. SLS analysis.
The balance of this comparison will shift decisively the day Long March 10 conducts its first successful orbital launch from Hainan. Until that orbital milestone occurs, Vulcan Centaur remains an active heavy-lift rocket, while Long March 10 remains a projected capability on a test stand. Readers evaluating global rocket capabilities can compare both vehicles against other global launchers on the most powerful rockets compared reference page.