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Long March 6A

From Wikipedia, the free encyclopedia
Long March 6A
Rendering of Long March 6A
FunctionMedium-lift launch vehicle
ManufacturerShanghai Academy of Spaceflight Technology
Country of originChina
Size
Height50 m (160 ft)
52 m (171 ft) with extended fairing
Diameter3.35 m (11.0 ft)
Mass530,000 kg (1,170,000 lb)
Stages2
Capacity
Payload to LEO
Mass8,000 kg (18,000 lb)[1]
Payload to 700 km (430 mi) SSO
Mass4,500 kg (9,900 lb)
Associated rockets
FamilyLong March
ComparableAntares
Soyuz-2
Launch history
StatusActive
Launch sitesTaiyuan, LA-9A
Total launches9
Success(es)9
First flight29 March 2022
Last flight5 December 2024
Boosters – FG-112
No. boosters4
Height15.1 m (50 ft)
Diameter2.0 m (6 ft 7 in)
Maximum thrust1,214 kN (273,000 lbf)
Total thrust4,828 kN (1,085,000 lbf)
Propellantsolid
First stage
Height30.5 m (100 ft)
Diameter3.35 m (11.0 ft)
Powered by2 × YF-100
Maximum thrust2,376 kN (534,000 lbf) [2]
Specific impulse
  • SL: 300 s (2.9 km/s)
  • vac: 335 s (3.29 km/s)[3]
PropellantRP-1/LOX
Second stage
Diameter3.35 m (11.0 ft)
Powered by1 × YF-115
Maximum thrust180 kN (40,000 lbf)[2]
Specific impulsevac: 341.5 s (3.349 km/s)[4]
PropellantRP-1/LOX

The Long March 6A (Chinese: 长征六号甲运载火箭) or Chang Zheng 6A as in pinyin, abbreviated LM 6A for export or CZ 6A within China, is a Chinese medium-lift launch vehicle in the Long March family, which was developed by the China Aerospace Science and Technology Corporation (CASC) [5] and the Shanghai Academy of Spaceflight Technology (SAST).

The vehicle is a further development of the Long March 6, with two YF-100 engines on the first stage as opposed to one on the Long March 6, augmented by four solid rocket boosters. The Long March 6A is China's first rocket with solid rocket boosters. There also exists a shorter boosterless variant of the 6A called the Long March 6C.

The maiden launch of the Long March 6A took place on March 29, 2022, successfully reaching orbit.[6] It was also the first launch from the newly built launch complex 9A in Taiyuan.

Launch statistics

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5
2022
2023
2024
2025
  •   Failure
  •   Partial failure
  •   Success
  •   Planned

List of launches

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Flight number Serial number Date (UTC) Launch site Payload Orbit Result
1 Y1 29 March 2022
09:50[6]
Taiyuan, LA-9A Pujiang-2
Tiankun-2
SSO Success
2 Y2 11 November 2022
22:52
Taiyuan, LA-9A Yunhai-3 01 SSO Success
3 Y5 10 September 2023
04:30
Taiyuan, LA-9A Yaogan 40A
Yaogan 40B
Yaogan 40C
LEO Success
4 Y4 31 October 2023
22:50
Taiyuan, LA-9A Tianhui 5A
Tianhui 5B
SSO Success
5 Y3 26 March 2024
22:51
Taiyuan, LA-9A Yunhai-3 02 SSO Success
6 Y7 4 July 2024
22:49
Taiyuan, LA-9A Tianhui 5C
Tianhui 5D
SSO Success
7 Y21 6 August 2024
06:42
Taiyuan, LA-9A Qianfan × 18 (G60 Polar Group 01) Polar Success
8 Y20 15 October 2024
11:06
Taiyuan, LA-9A Qianfan × 18 (G60 Polar Group 02) Polar Success
9 Y22 5 December 2024
04:41
Taiyuan, LA-9A Qianfan × 18 (G60 Polar Group 03) Polar Success
10 Y? January 2025 Taiyuan, LA-9A Qianfan × 18 (G60 Polar Group 05) Polar Planned

Mishaps

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After the release of the Yunhai 3 following the Y2 launch of 11 November 2022, the Long March 6's upper stage broke up into more than 50 pieces of debris, which expanded to more than 781 pieces. The vehicle was supposed to re-enter in one piece and then burn up. [7][8] Following the November 2022 breakup, similar events were observed after the 26 March 2024, 4 July 2024, and 6 August 2024 launches. The reason for the break ups are unclear, but may be related to upper stage passivation or insulation.[9][10]

See also

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References

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  1. ^ "[Technology·Aerospace] Long March 6A carrier rocket and its technical features!". 2022-06-26. Retrieved 6 August 2024.
  2. ^ a b ZHANG Wei-dong, WANG Dong-bao (2016). "New Generation Cryogenic Quick Launching Launch Vehicle and Development". Aerospace Shanghai.
  3. ^ "Chinese YF-100 (Russian RD-120) to Power CZ-5". SPACEPAC, The Space Public Affairs Committee. Archived from the original on 2017-10-25. Retrieved 2015-07-02.
  4. ^ "中国新一代液氧煤油发动机3:YF100/115主要特性 - 深空网". www.shenkong.net (in Chinese). Archived from the original on 2016-03-04. Retrieved 2016-04-11.
  5. ^ "Development of China's new "Changzheng 6" carrier rocket commences". People's Daily Online. 2009-09-04. Retrieved 6 September 2009.
  6. ^ a b Beil, Adrian (29 March 2022). "China debuts Chang Zheng 6A, teases more variants". NASASpaceFlight. Retrieved 29 March 2022.
  7. ^ Jones, Andrew. "Chinese rocket body breaks up in orbit after successful satellite launch". Space.com. Retrieved 7 December 2022.
  8. ^ "Evolution of Major Debris Clouds in Low Earth Orbit" (PDF). NASA. Retrieved 8 August 2024.
  9. ^ Jones, Andrew (2024-07-12). "China's Long March 6A rocket appears to have an orbital debris problem". SpaceNews. Retrieved 2024-08-08.
  10. ^ @S4S_SDA (7 August 2024). "#S4S has confirmed the breakup of a Chinese Long March 6A rocket launched from the Taiyuan Satellite Launch Center, China, on Aug. 7, 2024. Analysis ongoing. #spacedebris #SDA @SpaceTrackOrg @US_SpaceCom" (Tweet). Retrieved 7 August 2024 – via Twitter.{{cite web}}: CS1 maint: numeric names: authors list (link)