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Questions tagged [long-march]

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6
votes
0answers
362 views

Why does the YF-75D nozzle have such a strong spiral pattern?

Why does the YF-75D nozzle material have such a strong spiral pattern? Is it a result of manufacturing? Or added later? If it was only on the inside, I could imagine it was something to address ...
1
vote
2answers
94 views

First launch of Long March-5 using 4 RP-1/LOX boosters. First use of RP-1/LOX LRBs?

The Long March 5's first launch used a LH2/LOX main engine with four RP-1/LOX Liquid Rocket Boosters (LRBs). Is this the first time that RP-1/LOX LRBs have been used in a successful launch to orbit? ...
3
votes
1answer
266 views

CZ-5 plus YZ-2 put SJ-17 in GEO - third stage or separate spacecraft?

CZ-5 = Long March 5 YZ-2 = Yuanzheng 2 SJ-17 = Shijian 17 Gunter's Space Page says: SJ 17 (Shijian 17) is a Chinese experimental satellite flown on the maiden CZ-5/YZ2 launch. It is ...
13
votes
1answer
417 views

What's falling off the Shenzhou/Long March stack?

Watching the launch of the Shenzhou-11 mission on a Long March 2F, I noticed a number of items falling off the exterior of the rocket. I'm used to seeing chunks of ice sheet coming off of cryogenic ...