China Space Military：Recon, Satcom, Navi, ASAT/BMD, Orbital Vehicle, SLV, etc.

[samsara]

Very unfortunately the launch was just stated as FAILED! It seemed the 2nd stage rocket experienced some problem.
A setback for China's aeronautical development :-(

This failure again reaffirms that any space exploration program is never simple and to be taken lightly. The most stringent practices must be applied at any program... yet after all of these measures, a zero-failure can still not be guaranteed. Space exploration program is indeed a risky endeavor!

A great loss and saddest moment, but life must go on and advancement must be moved forward after some moment of silence, introspection, investigation, correction, and so on...

~~~~~~
"Our greatest glory is not in never falling, but in rising every time we fall." - Confucius (551-479 BCE)

 

[Deino]

 

[Kiss_of_the_Dragon]

Very unfortunately the launch was just stated as FAILED! It seemed the 2nd stage rocket experienced some problem.

A setback for China's aeronautical development :-(

This failure again reaffirms that any space exploration program is never simple and to be taken lightly. The most stringent practices must be applied at any program.

A great loss and sad moment, but life must go on and advancement must be moved forward after some moment of silence, introspection, investigation, correction, and so on...

~~~~~~
"Our greatest glory is not in never falling, but in rising every time we fall." - Confucius (551-479 BCE)

I'm wondering if the satellite could be saved by using it own rockets and fuel to boost to the correct orbit, maybe the life service will shortened but at least we could save it for few years.

 

[星海军事]

There's something wrong with the SYSTEM.

 

[X_Killer]

China says launch of Long March-5 Y2 "unsuccessful". Anomaly was detected during its flight and further investigation will be carried out.
.
Source- CXN
.

 

[Han Patriot]

Guys, China is pushing the limits, 25-30 launches a year, 4 launch bases, we need to recheck the system. All the failures are coming in this past 1.5 years, ever since Wenchang was completed. i suspect alot of human resources are overstretch and reassigned, causing problems in management.

China says launch of Long March-5 Y2 "unsuccessful". Anomaly was detected during its flight and further investigation will be carried out.
.
Source- CXN
.

Thanks for showing restraint and maturity. We may have our differences but this satellite was a game changer for satellite technology. it was the most advanced satellite bus ever made.

 

[Akasa]

From Internet chatter, it seems that the cryogenic second-stage YF-75D engines prematurely shut down, leading to a late separation of the second stage from the first and the eventual inability to reach the designated orbit.

Interestingly, a similar incident occurred during the maiden launch of the LM-5 in November 2016, in which the (supposed) second stage put the YZ-2 third stage and its payload on an incorrect orbit that was later rectified using the YZ-2. These two anomalies could be related and warrant further investigation.

Better now than during the upcoming Chang'e-5 launch.

 

[Kiss_of_the_Dragon]

Can the sat be saved?

 

[X_Killer]

Thanks for showing restraint and maturity.

Don't get embarrassed dude.
My post didn't have even a single word of my own.

Anyways, good luck for next mission

 

[X_Killer]

Failures are the pre-steps towards success

Plz don't post trolls.
We want Asian countries to be the Space Giants in the world.

Good luck to all space aspirants....

 

[Akasa]

Newer data suggests that one of the core stage YF-77 cryogenic engines prematurely shut down, as indicated by a total loss of chamber pressure at T+350 seconds, leading to an insufficient boost in velocity. Additionally, the second-stage cryogenic YF-75D engines (two of them) ignited 20 seconds later than planned, which finally sealed the fate of the launcher, the outcome of which was that the launch vehicle no longer had the sufficient velocity required to enter a parking orbit.

 

[X_Killer]

Why only asian countries ?

Obviously Bcoz of regional interest.

It may enormously speed up if countries have brotherhood instead of prevailing master-slave practices.

 

[ChineseTiger1986]

Guys, China is pushing the limits, 25-30 launches a year, 4 launch bases, we need to recheck the system. All the failures are coming in this past 1.5 years, ever since Wenchang was completed. i suspect alot of human resources are overstretch and reassigned, causing problems in management.


Thanks for showing restraint and maturity. We may have our differences but this satellite was a game changer for satellite technology. it was the most advanced satellite bus ever made.

The primary problem was the second stage with the YF-75.

The YF-77 as a brand new product was working fine this time, yet we neglected the YF-75, and didn't expect it failed this time as a very mature product.

 

[Han Patriot]

The primary problem was the second stage with the YF-75.

The YF-77 as a brand new product was working fine this time, yet we neglected the YF-75, and didn't expect it failed this time as a very mature product.

As highlighted by Bussard, it is precisely matured products and overconfidence which led to failures in the Russian system.

 

[ChineseTiger1986]

As highlighted by Bussard, it is precisely matured products and overconfidence which led to failures in the Russian system.

All products can be faulty by default, no matter how mature it is.

Just look at the Trident D5 missile, it was touted to be 100% reliable, yet it recently got several failed tests as well.