6.5吨物资、保障两个乘组 “天舟快递”豪华礼包有多丰富？一起来看

Core Points - The Tianzhou-9 cargo spacecraft is being prepared for launch, with a vertical transfer process that began at 8 AM on July 12, expected to take between 2.5 to 3 hours [1] - Tianzhou-9 is carrying 6.5 tons of supplies to support two astronaut crews [1][2] Group 1: Tianzhou-9 Cargo Spacecraft - Tianzhou-9 is specifically designed for resupplying the space station, with a total length of 10.6 meters and a maximum diameter of 3.35 meters [2] - The spacecraft's primary tasks include transporting cargo, replenishing propellant, and returning waste to the atmosphere for incineration [2] - It is the fourth cargo spacecraft produced during the application and development phase of the space station, tasked with delivering supplies for the Shenzhou-20 and Shenzhou-21 missions [2][4] Group 2: Long March 7 Rocket - The Long March 7 rocket, which is 53.1 meters long and 3.35 meters in diameter, is responsible for launching the Tianzhou-9 spacecraft [6] - It has a near-Earth orbit payload capacity of 14 tons, making it suitable for transporting cargo to the space station [6] - This launch marks the tenth flight of the Long March 7 rocket and the eighth time it has executed a cargo mission for the Chinese space station [8] Group 3: Launch Precision and Future Missions - The Long March 7 rocket is designed for high reliability and safety, utilizing environmentally friendly propellants [6] - It can maintain an orbital insertion accuracy within a 4-second error margin, which is crucial for fuel efficiency [10][11] - The Long March 7 series rockets, including the Long March 7A, are scheduled for multiple launches this year, continuing to support the space station's operational needs [10]