Jump to content

Gravity-1

From Wikipedia, the free encyclopedia
Gravity-1
引力一号
Gravity-1 mission 1 launch 11 January 2024
Functionexpendable medium-lift launch vehicle
ManufacturerOrienspace
Country of origin China
Size
Height29.4 metres (96 ft)
Diameter2.65 metres (8.7 ft)
Mass405 tonnes (893,000 lb)[1]
Stages3
Capacity
Payload to SSO (500km)
Mass4,200 kg (9,300 lb)[1]
Payload to LEO (200km)
Mass6,500 kg (14,300 lb)[1]
Launch history
StatusActive
Launch sitesChina Dongfang Spacecraft Launch Port
Total launches3
Success(es)3
Failure0
First flight11 January 2024
Last flight22 July 2026

Gravity-1 (Chinese: 引力一号 or YinLi-1) is a solid-propellant expendable medium-lift launch vehicle designed, manufactured and launched by Chinese aerospace company Orienspace. It can carry a payload of up to 6.5 tonnes (14,000 lb) to LEO or 4.2 tonnes (9,300 lb) to SSO, enabling the deployment of large-scale satellite constellations. The rocket has a height of 30 meters (98 ft), a take-off weight of 400 tonnes (880,000 lb), a take-off thrust of 600 tonnes (1,300,000 lb),[2] and a fairing diameter of 4.2 meters (14 ft).[3] Its maiden launch was conducted from a sea launch platform in the Yellow Sea on January 11, 2024, breaking records as both the world's most powerful solid-fuel carrier rocket and China's most powerful commercial launch vehicle to date.[4] Large pieces of debris were seen during the launch, which carried 3 Yunyao-1 meteorological satellites built by the Shanghai Academy of Spaceflight Technology, as part of the planned 90-satellite Yunyao constellation.[4][3]

Gravity-1 consists of seven solid rocket motors (SRB) in total. The first four side-mounted SRBs are ignited on the ground, while three core boosters are air-lit in sequence. The launch cost for Gravity-1 is around US$39 million. Gravity-1 has a quick-response-time of only five hours between manufacturing completion and launch. Orienspace has signed contracts for the launch of more than one hundred satellites.[5] Gravity-1 is the most powerful rocket consisting of entirely solid-rocket motors.[6] Due to the huge solid rocket motors, large plumes of smoke were produced during the launch.

List of launches

[edit]
Serial number Flight number Date (UTC) Launch site Payload Orbit Outcome
1 Gravity-1 Y1 11 January 2024
05:30 UTC
Special converted barge (Dong Fang Hang Tian Gang)
Offshore waters of Haiyang Port
Yunyao-1 18–20 weather satellites LEO (50° inclination, 500 km (310 mi; 270 nmi) circular) Success[4]
2 Gravity-1 Y2 11 October 2025
02:20 UTC
Special converted barge (Dong Fang Hang Tian Gang)
Offshore waters of Haiyang Port
Jilin-1 Kuanfu-02B-07
Shutianyuxing 01
Shutianyuxing 02
SSO Success[4]
3 Gravity-1 Y4 22 July 2026
02:54 UTC
Special converted barge (Dong Fang Hang Tian Gang)
Offshore waters of Shanghai[7]
9 Satellites SSO Success[4]

References

[edit]
  1. 1 2 3 Eastern Space (2024-01-11). "引力一号海上首飞成功! 创全球最大固体运载火箭纪录!" [Gravity-1's maiden sea flight is a success! Setting a new record for the world's largest solid-propellant launch vehicle!]. WeChat (in Chinese). Archived from the original on 2024-01-11. Retrieved 2024-01-11.
  2. Mansfield, Simon (2024-01-12). "China's Gravity 1 sets record for solid rocket fuels in maiden launch". Space Daily. Retrieved 2024-04-29.
  3. 1 2 Sesnic, Trevor (2024-01-09). "Maiden Flight | Gravity-1". Everyday Astronaut. Retrieved 2024-04-29.
  4. 1 2 3 4 5 Jones, Andrew (11 January 2024). "Orienspace breaks Chinese commercial launch records with Gravity-1 solid rocket". SpaceNews. Retrieved 11 January 2024.
  5. Gravity-1 rocket explained. SciNews. Retrieved 2024-04-07 via YouTube.
  6. Wall, Mike (2024-01-11). "China's record-breaking Gravity-1 rocket aces amazing debut launch from ship at sea (video)". Space. Retrieved 2025-10-03.
  7. CGTN. "China launches Gravity-1 Y4 rocket, sending 9 satellites into orbit". news.cgtn.com. Retrieved 2026-08-26.