China's Space Program News Thread

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taxiya

Brigadier
Registered Member
I am specially happy about the application of the "plasma blackout communication" on the NGSV (Next Generation Space Vehicle).

I don't know if this have been mentioned in this forum, but it is the first time I come across the technical detail of it and its real life application.

In short, it is special shape of the vehicle + S band (10 cm wavelength) + relying satellite/space station. It is nothing new, Space shuttle did it on its back, but it is significant in that, China made it to a much smaller platform similar in size of a ballistic missile reentry vehicle. That basically revealed the mystery of terminal guiding method of DF-21D and DF-26 warhead.

Regarding the relay, I would guess that one of the purpose of the ongoing Devine Eagle project is to complement the satellite relay system as a robust backup/enhancement. The Devine Eagle UAV and probably other smaller low flying UAV will lock on the target with precision of meters and then control the warhead to the target. The warhead does not need to slow down (as hypnotized in other method to allow target acquisition) and therefor maintain the advantage of kinetic power and speed of a ballistic missile.
 
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mr.bean

Junior Member
escobar i want to thank you for posting all the great stuff here in the China space thread. my like button doesn't work but i'd like you to know i really appreciate your posts, good job brother.

what a glorious day for China's space program. no better way to begin a new chapter by launching a brand new rocket, the CZ-7 in a brand new launch center in Wenchang. to all of China's space workers, we salute you.
 

SinoSoldier

Colonel
Amid all the well-warranted excitement and back-patting, does anybody feel a bit unnerved by the fact that the Chinese chose to test a prototype launch vehicle on a prototype pad?
 

antiterror13

Brigadier
how much cheaper this new LM-7 compared to old LM-2 series ... i.e $/kg cargo

LM-2 series is already one of the most reliable rockets in the world. LM-2D and 2F have 100% succes rate and LM-2C has 98% succes rate. These 3 rockets are still active.

Hopefully LM-7 will maintain or even better succes rate than LM-2 series
 

taxiya

Brigadier
Registered Member
Amid all the well-warranted excitement and back-patting, does anybody feel a bit unnerved by the fact that the Chinese chose to test a prototype launch vehicle on a prototype pad?
Let me try to answer your question.

The new launch vehicle use LOX and Kerosene, the old mature LM-2 and LM-3 use
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(N2O4) and
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(N2H4),
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, or
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etc. they are corrosive and poisonous. Besides, LOX demand cooling. So the piping, valves and monitoring devices are totally different from each other. This makes the new launch pad incompatible to the old vehicle. So there is no other choice but to do what they did.
 

SinoSoldier

Colonel
Let me try to answer your question.

The new launch vehicle use LOX and Kerosene, the old mature LM-2 and LM-3 use
Please, Log in or Register to view URLs content!
(N2O4) and
Please, Log in or Register to view URLs content!
(N2H4),
Please, Log in or Register to view URLs content!
, or
Please, Log in or Register to view URLs content!
etc. they are corrosive and poisonous. Besides, LOX demand cooling. So the piping, valves and monitoring devices are totally different from each other. This makes the new launch pad incompatible to the old vehicle. So there is no other choice but to do what they did.

Yes, I understand that the semi-cryogenic fuel requires different plumbing and cooling schemes, but that did not preclude them from testing out their pad using a proven LM-6 rocket, which uses the same semi-cryogenic fuel as the LM-7.
 
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