Engineering:Long March 6A

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Short description: Launch vehicle
Long March 6A
长征六号改遥一点火.png
The moment of the ignition of CZ-6A Y1
FunctionLaunch vehicle
ManufacturerShanghai Academy of Spaceflight Technology
Country of originChina
Size
Height50 m (160 ft)
Diameter3.35 m (11.0 ft)
Mass530,000 kg (1,170,000 lb)
Stages2
Capacity
Payload to 700 km (430 mi) SSO4,500 kg (9,900 lb)
Associated rockets
FamilyLong March
ComparableAntares
Soyuz-2
Launch history
StatusActive
Launch sitesTaiyuan LA-9A
Total launches4
Successes4
First flight29 March 2022
Last flight31 October 2023
Boosters
No. boosters4
Diameter2.0 m (6 ft 7 in)
Thrust1,214 kN (273,000 lbf)
Total thrust4,828 kN (1,085,000 lbf)
Fuelsolid
First stage
Diameter3.35 m (11.0 ft)
Engines2 YF-100
Thrust2,376 kN (534,000 lbf) [1]
Specific impulse300 seconds (sea level)
335 seconds (vacuum) [2]
FuelRP-1/LOX
Second stage
Diameter3.35 m (11.0 ft)
Engines1 YF-115
Thrust180 kN (40,000 lbf) [1]
Specific impulse341.5 seconds (vacuum) [3]
FuelRP-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 launch vehicle of the Long March family, which was developed by the China Aerospace Science and Technology Corporation (CASC) [4] and the Shanghai Academy of Spaceflight Technology (SAST).

The vehicle is a further development of the Long March 6, with 2 YF-100 engines on the first stage as opposed to 1 on the Long March 6, augmented by 4 solid rocket boosters. The Long March 6A is China's first rocket with solid rocket boosters.

The maiden launch of the Long March 6A took place on March 29, 2022, successfully reaching orbit.[5] It was also the first launch from the newly built launch complex 9A in Taiyuan.

Launch statistics

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List of launches

Main page: Engineering:List of Long March launches
Flight number Serial number Date (UTC) Launch site Payload Orbit Result
1 Y1 29 March 2022
09:50[5] 		Taiyuan, LA-9A Pujiang-2
Tiankun-2 		SSO Success
2 Y2 11 November 2022
22:52 		Taiyuan, LA-9A Yunhai-3 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

Mishaps

After the release of the Yunhai 3 following the Y2 launch of 11 November 2022, the Long March 6's upper stage exploded and broke into more than 50 pieces of debris, which expanded to more than 350 pieces. The vehicle was supposed to re-enter in one piece and then burn up and it's unclear why it exploded instead.[6][7]

See also

References

  1. ↑ 1.0 1.1 ZHANG Wei-dong, WANG Dong-bao (2016). "New Generation Cryogenic Quick Launching Launch Vehicle and Development". Aerospace Shanghai. 
  2. ↑ "Chinese YF-100 (Russian RD-120) to Power CZ-5". SPACEPAC, The Space Public Affairs Committee. http://spacepac.org/wp/china/chinese-yf-100-russian-rd-120-to-power-cz-5. 
  3. ↑ "中国新一代液氧煤油发动机3：YF100/115主要特性 - 深空网" (in Chinese). Archived from the original. Error: If you specify |archiveurl=, you must also specify |archivedate=. https://web.archive.org/web/20160304055915/http://www.shenkong.net/Explore/1410/ZGXYDYYMYFDJ3-YF100-115ZYTX26045110.htm. 
  4. ↑ "Development of China's new "Changzheng 6" carrier rocket commences". People's Daily Online. 2009-09-04. http://english.people.com.cn/90001/90776/90881/6748699.html. 
  5. ↑ 5.0 5.1 Beil, Adrian (29 March 2022). "China debuts Chang Zheng 6A, teases more variants". NASASpaceFlight. https://www.nasaspaceflight.com/2022/03/cz-6a-debut/. 
  6. ↑ Jones, Andrew. "Chinese rocket body breaks up in orbit after successful satellite launch". https://www.space.com/chinese-rocket-body-breaks-up-after-satellite-launch. 
  7. ↑ Passant, Rabie. "Chinese Rocket Stage Now a Cloud of Orbital Debris After Disintegrating in Space". https://gizmodo.com/space-space-junk-starlink-chinese-rocket-march-6a-1849884756. 



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