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Long March 10B

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Chinese commercial medium-lift rocket

"},"cpl":{"wt":""},"alt-cpl":{"wt":""},"height":{"wt":"{{cvt|70.2|m}}"},"diameter":{"wt":"{{cvt|5|m|ftin}}"},"mass":{"wt":""},"stages":{"wt":"2"},"capacities":{"wt":"{{Infobox rocket/payload\n |location = [[Low Earth orbit|LEO]]\n |altitude = {{cvt|200|km}} \n |mass = {{cvt|16000|kg}}\n }}{{Infobox rocket/payload\n |location = [[Low Earth orbit|LEO]]\n |altitude = {{cvt|900|km}} \n |mass = {{cvt|11000|kg}}\n }}"},"family":{"wt":"[[Long March (rocket family)|Long March]]"},"derived_from":{"wt":"[[Long March 10]]"},"comparable":{"wt":"{{plainlist|\n*[[Long March 7]]\n*[[Neutron (rocket)|Neutron]]\n*[[Zhuque-3]]\n*[[Falcon 9]]\n}}"},"status":{"wt":"Active"},"sites":{"wt":"[[Wenchang Commercial Space Launch Site|Wenchang Commercial]]"},"launches":{"wt":"1"},"success":{"wt":"1"},"fail":{"wt":""},"partial":{"wt":""},"other_outcome":{"wt":""},"first":{"wt":"10 July 2026"},"last":{"wt":""},"payloads":{"wt":""},"stagedata":{"wt":"{{Infobox rocket/stage\n | type = stage\n | diff = \n | stageno = First\n | name = \n | length = \n | empty = \n | gross = \n | propmass = \n | engines = 7 × [[YF-100#Versions|YF-100K]]\n | thrust = {{Abbr|SL|at sea level}}: {{cvt|8750|kN}}{{Abbr|vac|in vacuum}}: {{cvt|9772|kN}}\n | SI = {{Abbr|SL|at sea level}}: {{cvt|301.6|isp}}{{Abbr|vac|in vacuum}}: {{cvt|337|isp}}\n | burntime = 227 seconds\n | fuel = [[RP-1]]{{nnbsp}}/{{nnbsp}}[[LOX]]\n }}{{Infobox rocket/stage\n | type = stage\n | diff = \n | stageno = Second\n | length = \n | empty = \n | gross = \n | propmass = \n | engines = 1 × YF-219\n | thrust = \n | SI = \n | burntime = -->\n | fuel = [[Methane|CH4]]{{nnbsp}}/{{nnbsp}}[[LOX]]\n }}"}},"i":0}}]}'>Long March 10BFunctionMedium-lift launch vehicleManufacturerChina Academy of Launch Vehicle TechnologyCountry of originChinaSizeHeight70.2 m (230 ft)[1]Diameter5 m (16 ft 5 in)Stages2Capacity<br>Payload to LEOAltitude200 km (120 mi)Mass16,000 kg (35,000 lb)Payload to LEOAltitude900 km (560 mi)Mass11,000 kg (24,000 lb)<br>Associated rocketsFamilyLong MarchBased onLong March 10Comparable<br>Long March 7

Neutron

Zhuque-3

Falcon 9

Launch historyStatusActiveLaunch sitesWenchang CommercialTotal launches1Success(es)1First flight10 July 2026First stagePowered by7 × YF-100KMaximum thrustat sea level"}]]}'>SL: 8,750 kN (1,970,000 lbf)<br>in vacuum"}]]}'>vac: 9,772 kN (2,197,000 lbf)Specific impulseat sea level"}]]}'>SL: 301.6 s (2.958 km/s)<br>in vacuum"}]]}'>vac: 337 s (3.30 km/s)Burn time227 seconds[2]PropellantRP-1 / LOXSecond stagePowered by1 × YF-219[1]PropellantCH4 / LOX<br>[edit on Wikidata]

Long March 10B (Chinese: 长征十号乙) is a two-stage, medium-lift partially reusable launch vehicle with a first-stage powered by kerosene and liquid oxygen and a second-stage powered by liquid methane and liquid oxygen. It is the third in the Long March 10 series of rockets and is derived using technologies developed for the Long March 10A. It is operated by Chinarocket Co, Ltd, the commercial arm of CALT.[3]

The first launch of the rocket occurred at 4:15 (UTC) on 10 July 2026 from launch complex 2 of the Wenchang Commercial Space Launch Site and was fully successful. The first-stage booster was also successfully caught via a novel wire-system for the first time.[4]

Overview<br>[edit]

In December 2025, a representative from the commercial arm of CALT (Chinarocket Co., Ltd.) presented plans for a commercial variant of the Long March 10A during the Wenchang International Aviation and Aerospace Forum 2025. This new variant, the Long March 10B, will have a payload capacity of at least 16 tonnes, likely in a reusable mode, to a 200 km low Earth orbit, and at least 11 tonnes to a 900 km orbit at 50 degrees orbital inclination.[3]

The new CZ-10B inherits the first stage of the Long March 10A but reportedly will use a more powerful second stage that employs methane and liquid oxygen as fuel and oxidizer respectively. The Long March 10B's debut launch was on 10 July 2026. There may also be an additional commercial variant tentatively named the Long March 10C.[5][6] The first stage of the CZ-10B, just as the CZ-10A variant, will be recoverable via a "wire recovery apparatus" located on a recovery vessel after launch from the Wenchang Commercial Space Launch Site on Hainan island (the first-stage of the rocket is equipped with hooks that will catch the wire-network on the recovery ship; the tensioned wires are carried by rail-mounted dollies which automatically position themselves to optimize the likelihood that the rocket will successfully "catch" the wires).[3][7]

Illustration of flexible cable-net recovery of a landing rocket.

Launches<br>[edit]

Debut launch<br>[edit]

The first launch of the CZ-10B took place at 4:15 (UTC) on 10 July 2026 and successfully...