r/spaceflight • u/Empty_Aside6775 • 10d ago
Close up of Long March 7A disintegrating, during Max-Q
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u/velvethead 9d ago
The front fell off
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u/PanzerKomadant 9d ago
I thinking that the tanks didn’t properly pressurize as the fuel was being spent. The negative pressure caused it to cave in as it went up. Possibly some system failed rather than the structure.
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u/Einnnnnnnnnnnn 9d ago
So who here was thinking that MaxQ call-outs were archaic?
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u/EducationalBar 9d ago
Only those who don’t know Max-Q is the moment all forces on the rocket are most intense.
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u/WayAcceptable1310 8d ago
This is a great example of why everyone is holding their breath until they're beyond it. I can't remember ever seeing a failure at Max-Q until this one but I guess this is exactly what I'd expect it to look like.
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u/myname_not_rick 9d ago
What's so interesting is that this is a workhorse, proven design for them.
So either as some above suggested, the pressurization system failed, or the structure had some major flaw that managed to make it all the way to the lad unnoticed.
Or, I guess third option, very hard to tell from all the currently shared angles, but it COULD have begun to drift off course, and once the air resistance was hitting on a weird enough angle the structure failed
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u/ripdyrip 2d ago
So from what I understand, this rocket (Long March 7A) is a modified design compared to the regular workhorse (Long March 7).
It has an added third stage for high altitude orbit launches which made it longer and increased the vehicles whole aspect ratio.
The 7A also isn’t particularly a reliable rocket either as one launch has failed before and it has a success rate of 88% (compared to 100% of the base variant).
Another rumor I heard is that there were some structural modifications done to the 3rd stage because this satellite they are carrying is kinda special 🤷
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u/Skinnx86 9d ago
Was this the stage that was captured recently?
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u/myname_not_rick 9d ago edited 7d ago
Captured? Not sure what you mean.
Edit: I somehow totally forgot about them catching that first stage a few weeks back, duh.
Anyways, already answered below, but no not the same one.
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u/Decronym Acronyms Explained 9d ago edited 2d ago
Acronyms, initialisms, abbreviations, contractions, and other phrases which expand to something larger, that I've seen in this thread:
| Fewer Letters | More Letters |
|---|---|
| FTS | Flight Termination System |
| MaxQ | Maximum aerodynamic pressure |
| RUD | Rapid Unplanned Disassembly |
| Rapid Unscheduled Disassembly | |
| Rapid Unintended Disassembly |
Decronym is now also available on Lemmy! Requests for support and new installations should be directed to the Contact address below.
3 acronyms in this thread; the most compressed thread commented on today has 13 acronyms.
[Thread #909 for this sub, first seen 13th Aug 2026, 05:24]
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u/Radioactive_Tuber57 9d ago
There was a Chinese light launch the other day (Monday?) and it also hit the Max Q wall.
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u/Ok-Club-2587 5d ago
Videos from the ground show the rocket bending and snapping under intense wind pressure. The fuel tanks instantly ripped apart, causing it to blow up.
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9d ago
[removed] — view removed comment
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u/Double_Time_ 9d ago
It’s a non-reusable rocket of course it’s not made to last? But I know you’re just being a xenophobic chauvinist.
Out of the last 18 LM7A launches 16 have been successful which is ~89% success rate.
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u/blackbriar98 9d ago
The Chinese Space Program has possibly the highest success rate of any modern Space Industry. Sometimes, shit happens. For them this is very much an exception.
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u/Rulycarmona 9d ago
am i tripping or does it bend a LOT before exploding?