Author Topic: Long March-11 first launch - Jiuquan - September 25, 2015 (01:41 UTC)  (Read 36521 times)

Online Phillip Clark

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When was the last time that a major space power had two consecutive launches, each one being the debut of a different launch vehicle?   (I don't consider North Korea as a major space power!)
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Offline Liss

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First three elsets arrived.

A -- 97.31°, 475.7 x 482.5 km, 94.21 min
B -- 97.31°, 474.0 x 482.2 km, 94.20 min
E -- 97.34°, 141.8 x 576.8 km, 91.75 min

This message reflects my personal opinion based on open sources of information.

Offline Galactic Penguin SST

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Offline input~2

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First three elsets arrived.

A -- 97.31°, 475.7 x 482.5 km, 94.21 min
B -- 97.31°, 474.0 x 482.2 km, 94.20 min
E -- 97.34°, 141.8 x 576.8 km, 91.75 min


C and D have arrived:
2015-051C/40927 in 466 x 486 km x 97.32°
2015-051D/40928 in 467 x 485 km x 97.30°

E could be CZ-11 upper stage

Offline Galactic Penguin SST

First three elsets arrived.

A -- 97.31°, 475.7 x 482.5 km, 94.21 min
B -- 97.31°, 474.0 x 482.2 km, 94.20 min
E -- 97.34°, 141.8 x 576.8 km, 91.75 min


C and D have arrived:
2015-051C/40927 in 466 x 486 km x 97.32°
2015-051D/40928 in 467 x 485 km x 97.30°

E could be CZ-11 upper stage

Speaking of the CZ-11 4th stage....it looks like official reports are saying that it is a solid stage as well (specifically derived from GSO satellite apogee kick motors).
Chinese spaceflight is a cosmic riddle wrapped in a galactic mystery inside an orbital enigma... - (not) Winston Churchill

Offline jcm

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First three elsets arrived.

A -- 97.31°, 475.7 x 482.5 km, 94.21 min
B -- 97.31°, 474.0 x 482.2 km, 94.20 min
E -- 97.34°, 141.8 x 576.8 km, 91.75 min


C and D have arrived:
2015-051C/40927 in 466 x 486 km x 97.32°
2015-051D/40928 in 467 x 485 km x 97.30°

E could be CZ-11 upper stage

Speaking of the CZ-11 4th stage....it looks like official reports are saying that it is a solid stage as well (specifically derived from GSO satellite apogee kick motors).

The low perigee of E suggests that it also carries a liquid RCS system used for the disposal burn, at about 0153 UTC
The article I saw was comparing the launch technique (stage 1-3 sending stack to elliptical orbit, then coast to apogee
for stage 4 burn) to the GTO apogee kick motor technique. Can you point me to the bit where it's saying that the
actual hardware is derived from apogee motors?

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Offline Satori

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TW-1A Tianwang-1A (aka Shangkeda-2 aka SECM-1) and TW-1B Tianwang-1B (aka NJUST-2) are 0.114 × 0.114 × 0.239 m, 1.7 kg. TW-1C Tianwang-1C (aka NJFA-1) is 0,114 × 0,114 × 0,3433 m, 2.9 kg.

Offline savuporo

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Speaking of the CZ-11 4th stage....it looks like official reports are saying that it is a solid stage as well (specifically derived from GSO satellite apogee kick motors).
I saw reports with three stage solid with YF-50 powered orbital stage for maneuvering.
Certainly looks like Epsilon and Vega have 'fierce competition' now ..
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Online Skyrocket

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TW-1A Tianwang-1A (aka Shangkeda-2 aka SECM-1) and TW-1B Tianwang-1B (aka NJUST-2) are 0.114 × 0.114 × 0.239 m, 1.7 kg. TW-1C Tianwang-1C (aka NJFA-1) is 0,114 × 0,114 × 0,3433 m, 2.9 kg.

i.e. TW-1A and 1B are 2U cubesats, while TW 1C is a 3U cubesat

Offline Satori

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TW-1A Tianwang-1A (aka Shangkeda-2 aka SECM-1) and TW-1B Tianwang-1B (aka NJUST-2) are 0.114 × 0.114 × 0.239 m, 1.7 kg. TW-1C Tianwang-1C (aka NJFA-1) is 0,114 × 0,114 × 0,3433 m, 2.9 kg.

i.e. TW-1A and 1B are 2U cubesats, while TW 1C is a 3U cubesat

Yes, that was already mentioned on the NSF article about the launch.

Online edkyle99

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Is CZ-11 based on DF-31 or DF-41, or something else? Is it related to the Kuaizhou launch vehicle in any way?

 - Ed Kyle
« Last Edit: 09/26/2015 08:03 PM by edkyle99 »

Online Kryten

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Is CZ-11 based on DF-31 or DF-41, or something else? Is it related to the Kuaizhou launch vehicle in any way?

 - Ed Kyle
It's 2m in diameter, so it appears not. DF-31 and -41 are 1.7m, and Kuaizhou is 1.4m.

Offline jcm

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Is CZ-11 based on DF-31 or DF-41, or something else? Is it related to the Kuaizhou launch vehicle in any way?

 - Ed Kyle
It's 2m in diameter, so it appears not. DF-31 and -41 are 1.7m, and Kuaizhou is 1.4m.

I've seen a variety of claims for the diameter of DF-31/41: 1.7m, 2.0m, 2.25m as well as disagreement on whether the DF-41 and DF-31 have the same diameter or not.
What do you think is an authoritative source for the DF-31 and DF-41 diameters?

And the 2m diameter quoted for CZ-11 might be including some slop.

So I don't think we can rule out the identity, and my guess is that in fact CZ-11's lower stages are taken with minor mods
from DF-31 or 41, given the short development time and the fact that the diameter *might* be the same
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http://planet4589.org

Online Kryten

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Is CZ-11 based on DF-31 or DF-41, or something else? Is it related to the Kuaizhou launch vehicle in any way?

 - Ed Kyle
It's 2m in diameter, so it appears not. DF-31 and -41 are 1.7m, and Kuaizhou is 1.4m.

I've seen a variety of claims for the diameter of DF-31/41: 1.7m, 2.0m, 2.25m as well as disagreement on whether the DF-41 and DF-31 have the same diameter or not.
What do you think is an authoritative source for the DF-31 and DF-41 diameters?
I'm just going off what Norbert Brügge has, but I don't see anything further on his site about where those figures are sourced from, or how he derived them if he came up with them himself.
« Last Edit: 09/27/2015 04:43 PM by Kryten »

Online edkyle99

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The DF-31 transporter erector launch tube has some similarities to the launch tube used by CZ-11.  The transporter itself is different and, of course, DF-31 only has three stages (reportedly).  The comparison becomes better if the CZ-11 image is stretched horizontally to a 4:3 format.

 - Ed Kyle
« Last Edit: 09/27/2015 05:23 PM by edkyle99 »

Offline Prober

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Some linkage materials (info?) coming out of the 3D Printer interests.

http://forum.nasaspaceflight.com/index.php?topic=33141.msg1430449#msg1430449

lots of models shown in Chinese.
« Last Edit: 09/30/2015 07:33 PM by Prober »
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Offline savuporo

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Here are some screen captures from

http://tv.cntv.cn/video/C10601/0ce9d9c6698140eca259f761d50843c1


Another video here, hot fire test and more complete animation. They show whats clearly a liquid engine which i'm assuming is the upper stage YF-50, but just guessing

http://v.ifeng.com/news/tech/201509/012d1da9-5081-4eab-964d-305ca0cc1a7b.shtml

Original thread:
http://lt.cjdby.net/thread-2079159-1-1.html
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Offline Steven Pietrobon

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Another video here, hot fire test and more complete animation. They show whats clearly a liquid engine which i'm assuming is the upper stage YF-50, but just guessing

That looks way too big to be an upper stage engine for a vehicle this size. Here's the payload fairing separation.
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Offline baldusi

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Here are some screen captures from

http://tv.cntv.cn/video/C10601/0ce9d9c6698140eca259f761d50843c1


Another video here, hot fire test and more complete animation. They show whats clearly a liquid engine which i'm assuming is the upper stage YF-50, but just guessing

http://v.ifeng.com/news/tech/201509/012d1da9-5081-4eab-964d-305ca0cc1a7b.shtml

Original thread:
http://lt.cjdby.net/thread-2079159-1-1.html
That looks to me like the totally unrelated YF-100. Which I guess an ENG editor might mix in the reel just because he had it. Specially if he was covering the LM-6 launch, too.

Offline Prober

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Here are some screen captures from

http://tv.cntv.cn/video/C10601/0ce9d9c6698140eca259f761d50843c1


Another video here, hot fire test and more complete animation. They show whats clearly a liquid engine which i'm assuming is the upper stage YF-50, but just guessing

http://v.ifeng.com/news/tech/201509/012d1da9-5081-4eab-964d-305ca0cc1a7b.shtml

Original thread:
http://lt.cjdby.net/thread-2079159-1-1.html

sure these pics don't belong on the model 6?
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