
Gravity-1 (Chinese:引力一号) is asolid-propellant expendablemedium-lift launch vehicle designed, manufactured and launched by Chinese aerospace companyOrienspace. It can carry apayload of up to 6.5 tonnes (14,000 lb) toLEO or 4.2 tonnes (9,300 lb) toSSO, enabling the deployment of large-scalesatellite constellations. The rocket has a height of 30 meters, a take-off weight of 400 tonnes, a take-off thrust of 600 tonnes,[1] and afairing diameter of 4.2 meters.[2] Itsmaiden launch was conducted from asea launch platform in theYellow Sea on January 11, 2024, breaking records as both the world's most powerful solid-fuelcarrier rocket and China's most powerfulcommercial launch vehicle to date.[3] Large pieces of debris were seen during the launch, which carried 3 Yunyao-1 meteorological satellites built by theShanghai Academy of Spaceflight Technology, as part of the planned 90-satellite Yunyao constellation.[3][2]
Gravity-1 consists of sevensolid 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.[4] Gravity-1 is the most powerful rocket consisting of entirely solid-rocket motors.[5] Due to the huge solid rocket motors, large plumes of smoke were produced during the launch.
| 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 ofHaiyang Port | Yunyao-1 18–20 weather satellites | LEO (50° inclination, 500km circular) | Success[3] |
| 2 | Gravity-1 Y2 | 11 October 2025 02:20 UTC | Special converted barge (Dong Fang Hang Tian Gang) Offshore waters ofHaiyang Port | Jilin-1 Kuanfu-02B-07 Shutianyuxing 01 Shutianyuxing 02 | SSO | Success[3] |
| 3 | Gravity-1 Y3 | 2025 | Special converted barge (Dong Fang Hang Tian Gang) Offshore waters ofHaiyang Port | TBA | LEO | Planned[3] |
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