Rendering of a Long March 12 | |
| Function | Medium-lift launch vehicle |
|---|---|
| Manufacturer | Shanghai Academy of Spaceflight Technology |
| Country of origin | China |
| Size | |
| Height | 62 m (203 ft 5 in) |
| Diameter | 3.8 m (12 ft 6 in) |
| Mass | 433 t (954,602 lb) |
| Stages | 2 |
| Capacity | |
| Payload toLEO | |
| Altitude | 200 km (120 mi) |
| Mass | 12,000 kg (26,000 lb) |
| Payload toLEO | |
| Altitude | 300 km (190 mi) |
| Mass | 10,000 kg (22,000 lb) |
| Payload toSSO | |
| Altitude | 700 km (430 mi) |
| Mass | 6,000 kg (13,000 lb) |
| Associated rockets | |
| Family | Long March |
| Comparable | |
| Launch history | |
| Status | Active |
| Launch sites | Wenchang Commercial, LC-2 |
| Total launches | 3 |
| Success(es) | 3 |
| First flight | 30 November 2024 |
| Last flight | 10 November 2025 (most recent) |
| First stage | |
| Powered by | 4 × YF-100K |
| Maximum thrust | 5,000 kN (1,100,000 lbf) |
| Propellant | RP-1 / LOX |
| Second stage | |
| Powered by | 2 × YF-115 |
| Maximum thrust | 360 kN (81,000 lbf) |
| Propellant | RP-1 / LOX[1] |
TheLong March 12 (Chinese:长征十二号运载火箭;pinyin:Chang Zheng 12, abbreviatedLM-12 for export orCZ-12 within China), is a Chinesemedium-lift launch vehicle carrier rocket. Both stages use liquid fuel: refined kerosene (RP-1) and liquid oxygen (LOX).The manufacturer isShanghai Academy of Spaceflight Technology. It is capable of placing at least 12 tonnes (26,000 lb) of payload inlow Earth orbit and at least 6 tonnes (13,000 lb) in a 700 kilometres (430 mi)Sun-synchronous orbit. Its first launch took place on November 30, 2024 from the Hainan International Commercial Aerospace Launch Site onHainan island.[2][3]
There is also a planned reusable version of the rocket, the CZ-12A; efforts are currently underway to verify stage-reusability technology via vertical take-off, vertical landing (VTVL) tests.[4]
On 26 February 2024, theChina Aerospace Science and Technology Corporation (CASC) released its annual "Blue Book" which detailed the company's launch plans for the coming year; one of the projects revealed in the Blue Book is the new Long March 12 medium-lift rocket.[2] Long March 12 (CZ-12) is designed as a two-stage rocket: its first stage is powered by fourYF-100K 1250 KN engines usingRP-1 andliquid oxygen while its second stage is powered by twoYF-115 180 kN engines also using RP-1/LOX. The rocket offers two payload fairing choices, one with a diameter of 5.2 metres and another with a diameter of 4.2 metres.[5]
CZ-12 has a stage diameter of 3.8 metres, a first for China. It is launched from the new commercial launch site located at China's coastal spaceport inWenchang.[6]
The maiden launch of the new rocket occurred at 14:25UTC on 30 November 2024 from the Hainan International Commercial Aerospace Launch Site. There were two payloads on the launch: the “Satellite Internet Technology Test Satellite” and the “Technology Test Satellite-3”. Notably, this launch featured the newYF-100K rocket engine in its initial orbital launch attempt; the engine is a critical component of the under-development superheavy-liftLong March 10 lunar rocket. In addition, the maiden launch of the CZ-12 also constitutes the debut launch from the new Hainan commercial launch site.[3]
In the future, SAST plans to introduce a variant with a reusable first stage: the Long March 12A (CZ-12A). It is anticipated that theCZ-12A will use methane and liquid-oxygen rocket engines from commercial providers.
| Serial Number | Flight number | Date (UTC) | Launch site | Payload | Orbit | Result | Note |
|---|---|---|---|---|---|---|---|
| 1 | Y1 | 30 November 2024 14:25 | Wenchang Commercial, LC-2 | Hulianwang Jishu Shiyan 5A JSW-03 | LEO | Success | Maiden flight of Long March 12. - First flight ofYF-100K engines. - First launch from WC-LC-2 |
| 2 | Y2 | 4 August 2025 10:21 | Wenchang Commercial, LC-2 | Huliangwang × 9 (SatNet LEO Group 07) | LEO | Success | |
| 3 | Y3 | 10 November 2025 02:41 | Wenchang Commercial, LC-2 | Huliangwang × 9 (SatNet LEO Group 13) | LEO | Success |
| Flight No. | Rocket | Serial No. | Date/Time (UTC) | Payload | Orbit | Launch site | Outcome | Booster Recovery |
|---|---|---|---|---|---|---|---|---|
| 1 | CZ-12A | Y1 | NET December 2025 | JSLC | TBD | |||
| First flight of thereusable CZ-12A variant. | ||||||||