Long March 8

Long March 8
Rendering of Long March 8 Y1
FunctionOrbital launch vehicle
ManufacturerChina Academy of Launch Vehicle Technology (CALT)
Country of originChina
Size
Height
  • CZ-8 (core only): 48 m (157 ft)[1]
  • CZ-8: 50.34 m (165.2 ft)
  • CZ-8A: 50.5 m (166 ft)[2]
Diameter3.35 m (11.0 ft)
Mass
  • CZ-8 (core only): 198,000 kg (437,000 lb)[1]
  • CZ-8: 356,000 kg (785,000 lb)
  • CZ-8A: 371,000 kg (818,000 lb)[2]
Stages2
Capacity
Payload to SSO
Altitude700 km (430 mi)
Mass
  • CZ-8 (core only): 3,000 kg (6,600 lb)[1]
  • CZ-8: 5,000 kg (11,000 lb)
  • CZ-8A: 7,000 kg (15,000 lb)[3]
Payload to LEO
Mass8,100 kg (17,900 lb)
Payload to GTO
Mass2,800 kg (6,200 lb)
Payload to TLI
Mass1,500 kg (3,300 lb)
Associated rockets
Comparable
Launch history
StatusActive
Launch sitesWenchang, LC-2
Wenchang Commercial, LC-1
Total launches6 (8: 4, 8A: 2)
Success(es)6 (8: 4, 8A: 2)
First flight
  • 8: 22 December 2020
  • 8A: 11 February 2025
Last flight
  • 8: 11 March 2025 (most recent)
  • 8A: 30 July 2025 (most recent)
Boosters – K2
No. boosters0 or 2
Height26.903 m (88.26 ft)
Diameter2.25 m (7 ft 5 in)
Powered by1 × YF-100
Maximum thrustSL: 1,200 kN (270,000 lbf)
vac: 1,340 kN (300,000 lbf)
Total thrustSL: 4,800 kN (1,100,000 lbf)
vac: 5,360 kN (1,200,000 lbf)
Specific impulseSL: 300 s (2.9 km/s)
vac: 335 s (3.29 km/s)
PropellantRP-1 / LOX
First stage – K3
Height25.083 m (82.29 ft)
Diameter3.35 m (11.0 ft)
Powered by2 × YF-100
Maximum thrustSL: 2,400 kN (540,000 lbf)
vac: 2,680 kN (600,000 lbf)
Specific impulseSL: 300 s (2.9 km/s)
vac: 335 s (3.29 km/s)
PropellantRP-1 / LOX
Second stage (CZ-8)
Height12.375 m (40.60 ft)
Diameter3 m (9.8 ft)
Powered by2 × YF-75
Maximum thrust167.17 kN (37,580 lbf)
Specific impulse438 s (4.30 km/s)
PropellantLH2 / LOX
Second stage (CZ-8A)
Height12.375 m (40.60 ft)
Diameter3.35 m (11.0 ft)
Powered by2 × YF-75H
Maximum thrust200 kN (45,000 lbf)
Specific impulse442.6 s (4.340 km/s)
PropellantLH2 / LOX

Long March 8 (Chinese: 长征八号运载火箭) is an orbital launch vehicle developed by the China Academy of Launch Vehicle Technology to launch up to 5000 kg to a 700 km altitude Sun-synchronous orbit (SSO).[4] The rocket is based on the Long March 7 with its first stage and two boosters, along with the existing liquid hydrogen burning third stage of the Long March 3A/3B/3C and 7A as its second stage. The boosters are omitted in the "core only" variant that first flew on its second launch in February 2022.[1]

A planned future launch vehicle variant of the Long March 8 will be partially reusable by featuring a combined booster recovery of the first stage and the boosters as a single unit.[5]

The maiden flight of the Long March 8 was launched on 22 December 2020 from the Wenchang Spacecraft Launch Site.[6]

CZ-8A variant

[edit]
Rendering of CZ-8A

An upgraded version of the Long March 8, the Long March 8A (Chinese: 长征八号甲运载火箭), has successfully debuted on February 11, 2025[7] with increased capability of up to 7 tonnes to a 700 km altitude sun-synchronous orbit. It implements a larger 3.35 meters diameter liquid hydrogen/liquid oxygen second stage, coupled with 2 upgraded version of the YF-75D engines (known as the YF-75H) with increased thrust to 10 tonnes each through measures such as increased turbopump speeds. The Long March 8A can also use a larger 5.2 meters diameter payload fairing.

Launch statistics

[edit]

Launch outcomes

[edit]
1
2
3
2020
'21
'22
'23
'24
'25
  •   Failure
  •   Partial failure
  •   Success
  •   Planned

Rocket configurations

[edit]
1
2
2020
'21
'22
'23
'24
'25
  •   CZ-8 core only
  •   CZ-8 standard
  •   CZ-8A

List of launches

[edit]

See also

[edit]

References

[edit]
  1. ^ a b c d "长征八号遥二运载火箭飞行试验取得圆满成功". people.cn (in Chinese (China)). 27 February 2022. Retrieved 18 March 2023.
  2. ^ a b Zhengyu, Song; Lidong, Liu; Xiaofei, Chen; Shanshu, Xu; Yitian, Wu (April 2023). "Development and Key Technologies of Long March 8 Family: China's Next-generation Medium-lift Launchers". Journal of Astronautics. 44 (4): 476–485. doi:10.3873/j.issn.1000-1328.2023.04.002. Retrieved 7 June 2024.
  3. ^ "长征八号改进型火箭二子级暨通用氢氧末级全系统试车成功!长征八号改进型火箭今年首飞 (All-Systems testing of upgraded Long March 8 second stage/universal LH2/LOX upper stage a success! Upgraded Long March 8 will first launch this year)" (in Chinese). CALT. Retrieved 7 June 2024.
  4. ^ 贾平凡 (28 December 2020). "长征八号首飞成功 中国运载火箭家族再添新成员" (in Simplified Chinese). 新华社. Retrieved 27 February 2022.
  5. ^ Jones, Andrew (30 April 2018). "China to test rocket reusability with planned Long March 8 launcher". SpaceNews. Retrieved 6 December 2020.
  6. ^ a b Jones, Andrew (22 December 2020). "China launches first Long March 8 from Wenchang spaceport". SpaceNews. Retrieved 22 December 2020.
  7. ^ Jones, Andrew (11 February 2025). "First launch of Long March 8A sends second group of Guowang megaconstellation satellites into orbit". SpaceNews. Retrieved 12 February 2025.
  8. ^ "长征八号运载火箭首次飞行试验取得圆满成功" [First Long March 8 rocket test flight was a complete success]. CNSA (in Chinese). 22 December 2020. Retrieved 22 December 2020.
  9. ^ a b Jones, Andrew (27 February 2022). "China launches national record 22 satellites on Long March 8 commercial rideshare". SpaceNews. Retrieved 1 March 2022.
  10. ^ "China launches new relay satellite for Earth-Moon communications". Xinhua. 20 March 2024. Retrieved 21 March 2024.
  11. ^ Jones, Andrew (11 February 2025). "First launch of Long March 8A sends second group of Guowang megaconstellation satellites into orbit". SpaceNews. Retrieved 11 February 2025.
  12. ^ "长征八号运载火箭完成转场合练,海南商发一号发射工位将迎来首飞任务" [Long March 8 rocket completed pad dress rehearsal ahead of first launch from Wenchang Commercial Launch Site Pad No. 1]. Sina.com. 8 November 2024. Retrieved 9 November 2024.
  13. ^ Jones, Andrew (11 February 2025). "First launch of Long March 8A sends second group of Guowang megaconstellation satellites into orbit". SpaceNews. Retrieved 11 February 2025.
  14. ^ "长征八号运载火箭完成转场合练,海南商发一号发射工位将迎来首飞任务" [Long March 8 rocket completed pad dress rehearsal ahead of first launch from Wenchang Commercial Launch Site Pad No. 1]. Sina.com. 8 November 2024. Retrieved 9 November 2024.