"Previously phase one of construction took just short of twenty-nine months to build a liquid propellant multi-user launch pad and one exclusive to the Long March 8 series"
China's Space Program Thread II
- Thread starter Blitzo
- Start date
Hopefully they can get a move on then, because I read somewhere that LM10 was slated to launch in 2026.
Microsat shared some details about the DRO A/B mission.
"Through emergency orbit reconstruction, after 167 days of maneuvering, 5 orbit control adjustments, 5 trajectory corrections, and 3 gravity assists from the Sun and Moon, the DRO A/B composite successfully entered a DRO orbit, achieving successful separation of the dual satellites."
"Achieved the world's first large-scale autonomous constellation construction at a distance of millions of kilometers. Enabled low-energy orbital insertion with a velocity increment at hundreds m/s level, ensuring long-term stable DRO parking measured in years."
This seems to be the first official confirmation that the DRO A/B satellites have successfully entered DRO.
Some critical points:
"Through emergency orbit reconstruction, after 167 days of maneuvering, 5 orbit control adjustments, 5 trajectory corrections, and 3 gravity assists from the Sun and Moon, the DRO A/B composite successfully entered a DRO orbit, achieving successful separation of the dual satellites."
"Achieved the world's first large-scale autonomous constellation construction at a distance of millions of kilometers. Enabled low-energy orbital insertion with a velocity increment at hundreds m/s level, ensuring long-term stable DRO parking measured in years."
This seems to be the first official confirmation that the DRO A/B satellites have successfully entered DRO.
Some critical points:
by78
General
Some images from Deep Blue's VTVL test and the aftermath. Learn, try again, succeed.
Deep Blue's second VTVL test vehicle has arrived. Test flight expected soon.
This is an insane development..
China has achieved a breakthrough in laser communications that could pave the way for 6G and other applications including remote sensing with ultra-high resolution and next generation satellite positioning technology.
Chang Guang Satellite Technology Co, which owns Jilin-1, the world’s largest sub-metre commercial remote sensing satellite constellation, said it achieved a 100 gigabit per second ultra-high-speed image data transmission rate in testing last weekend.
The feat – 10 times the speed of its previous record – was accomplished between a truck-mounted ground station and one of the 117 satellites that currently make up the Jilin-1 constellation, the company said.
China has achieved a breakthrough in laser communications that could pave the way for 6G and other applications including remote sensing with ultra-high resolution and next generation satellite positioning technology.
Chang Guang Satellite Technology Co, which owns Jilin-1, the world’s largest sub-metre commercial remote sensing satellite constellation, said it achieved a 100 gigabit per second ultra-high-speed image data transmission rate in testing last weekend.
The feat – 10 times the speed of its previous record – was accomplished between a truck-mounted ground station and one of the 117 satellites that currently make up the Jilin-1 constellation, the company said.
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by78
General
A list of payloads to be carried by the Tianwen-2 spacecraft, which include infrared imaging spectrometer, thermal radiation spectrometer, multi-spectral camera, color camera, radar, magnetometer, charged and neutral particle analyzer, ejecta analyzer, and laser integrated navigation sensors, etc.
An illustration of the astroid dust detector and analyzer to be carried by the Tianwen-2 astroid sample return mission.
by78
General
Latest powerpoint slides on Jiuzhou's Lingyun and Longyun LOX/Methane engines. A few specs have been revised upward, while the weight of LY-70 has been reduced.
LY-70 Longyun:
– Ground thrust: 745kN
– Vacuum thrust: 811.7kN
– Ground specific impulse: 293.9s
– Vacuum specific impulse: 320.2s
– Weight: ≯750kg
– Maximum swing angle: ±8°
– Variable thrust range: 40%-100%
– Number of re-starts during a single flight: ≥3 times
The Longyun engine (LY-70) has accumulated 17,000 seconds of hot test runs, and its thrust has been increased to 785kN (from 745kN), with a thrust-to-weight ratio having reached 110:1.
