Author Topic: LIVE: Chinese CE-5-T1 (Chang'e 5 precursor) - CZ-3C/G2, Xichang - Oct. 23, 2014  (Read 169166 times)

Offline tesla

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Offline limen4

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Re: Chang'e 5 precursor mission - CZ-3C/E - October 2014
« Reply #21 on: 09/24/2014 06:01 AM »
The philatelic association of China Aerospace Science and Technology Corporation  6th academy in Xian (responsible for liquid rocket engine development and production) issued some designs for Chang’e-5 T1 commemorative envelopes. Some information  are remarkable:
- The launch vehicle is called CZ-3C/G2
- The planned landing area seems to be in the vicinity of Huofutan Township (活福滩乡; Postal Code 011809) only few Kilometers eastwards from the primary Shenzhou landing area in the vicinity of  Honggeer Banner (红格尔苏木 Postal Code 011819)

Offline Skyrocket

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Re: Chang'e 5 precursor mission - CZ-3C/E - October 2014
« Reply #22 on: 09/24/2014 06:30 AM »
The philatelic association of China Aerospace Science and Technology Corporation  6th academy in Xian (responsible for liquid rocket engine development and production) issued some designs for Chang’e-5 T1 commemorative envelopes. Some information  are remarkable:
- The launch vehicle is called CZ-3C/G2
- The planned landing area seems to be in the vicinity of Huofutan Township (活福滩乡; Postal Code 011809) only few Kilometers eastwards from the primary Shenzhou landing area in the vicinity of  Honggeer Banner (红格尔苏木 Postal Code 011819)

The spacecraft shown on the 2nd envelope is the Soviet Zond or L1 spacecraft: http://space.skyrocket.de/doc_sdat/zond_l1.htm

Offline Galactic Penguin SST

I made some interesting discovery from LuxSpace's website, which has details of the ham radio transponder they are flying on the CZ-3C's 3rd stage:

Nominal mission duration: 196 hours (8.17 days)
Lunar fly-by: 97 hours after final orbit insertion (4.04 days) - one source claims the nominal time as 00:28 UTC on October 28
Perilune: ~13000 km from Moon surface
Distance of Moon from Earth at closest fly-by: ~373000 km

Also look at the graphs on this paper, it is interesting to see that the "orbital insertion" scenario shows a time of 20:04 UTC on October 23 - which seems legit for a launch out of Xichang as close to the lunar orbital plane as possible early on October 24 local time (I found this by using the Orbiter spaceflight simulator), so I guess the projected orbital insertion time won't be far away for that. Liftoff time would then be somewhere around 19:30 UTC I think? That leads to the closest flyby not far away from the time listed above (maybe 2-3 hours off) and return to Earth in Inner Mongolia around 23:00 UTC on October 31.

Does that sound legit?  ::)
Chinese spaceflight is a cosmic riddle wrapped in a galactic mystery inside an orbital enigma... - (not) Winston Churchill

Offline plutogno

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from the AMSAT ANS-278 bulletin http://amsat.org/pipermail/amsat-bb/2014-October/050932.html

Quote
Launched (sic!) is planned in a narrow window at 17:59:xx UTC on October 23 and flyby is to occur nominally on October 28 at 00:33 UTC

Offline Galactic Penguin SST

Some old news that I forgot to mention - for those who are asking where the rocket is, it has wrapped up all its pre-delivery tests by mid-September and has left for Xichang a few days later.

Unfortunately that's almost all the news this spacecraft has got in China since the last report. T-2 weeks....  :-X
Chinese spaceflight is a cosmic riddle wrapped in a galactic mystery inside an orbital enigma... - (not) Winston Churchill

Online Satori

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The last stage of the CZ-3C launch will tale the 4M - Manfred Memorial Moon Mission.

On October 10 the LuxSpace launch preparation team successfully finalized the system functional tests and health checks of 4M before integration with the launch vehicle.

Integration of the payload took place on October 12 (the flight cable was integrated on October 10).

Online Satori

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About the 4M mission...

Online Satori

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Images of the CZ-3C/G2 launcher posted on 9ifly Chinese space forum and taken on October 16

Offline Blackstar

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So what is the official name of this mission?

Offline Hungry4info3

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Chang'e 4M if this post is a good indication.

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Chang'e 4M if this post is a good indication.

No. '4M' is another mission that will be launched along with the Chang'e-5-T1 mission. 4M is the Manfred Memorial Moon Mission.
« Last Edit: 10/16/2014 05:18 PM by Satori »

Offline Blackstar

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The thread title is 5-T1, which I interpret as the first technology demonstrator for the CE-5 mission.

I'm just wondering if CE-4 is on the schedule in any way. A Space.com article refers to this mission as CE-4, which I'm pretty sure is wrong.

Online Satori

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The thread title is 5-T1, which I interpret as the first technology demonstrator for the CE-5 mission.

I'm just wondering if CE-4 is on the schedule in any way. A Space.com article refers to this mission as CE-4, which I'm pretty sure is wrong.

Chang'e-4 is being evaluated by the Chinese scientists at this time. The probe was developed as a back-up to Chang'e-3 and I suppose that the actual evaluation of the mission is related to the problems registered with the Yutu rover.

From http://news.xinhuanet.com/english/china/2014-10/10/c_127083174.htm "China's ailing moon rover weakening: designer"

"Yu said the Chang'e-4 mission is under further analysis.

As the backup probe of Chang'e-3, Chang'e-4 will verify technology for Chang'e-5. The more sophisticated Chang'e-5/6 missions are aimed for tasks including unmanned sampling and returning to Earth.

China plans to launch an experimental recoverable moon orbiter before the end of this year to test technology vital for the success of Chang'e-5."
« Last Edit: 10/16/2014 06:05 PM by Satori »

Offline Blackstar

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Thanks. That is what I thought. Good to have it confirmed.


Offline Hungry4info3

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No. '4M' is another mission that will be launched along with the Chang'e-5-T1 mission.
Thanks for the correction!

Offline Galactic Penguin SST

Thanks. That is what I thought. Good to have it confirmed.

Well I'm not surprised by the mix up in other places - the Chinese really keeps this one under the blanket (even by the China Lunar Exploration Program standards!) with literally almost no information even in Chinese - in fact we still have not seen any pictures/diagrams that show how does the spacecraft looks like!  :-X
Chinese spaceflight is a cosmic riddle wrapped in a galactic mystery inside an orbital enigma... - (not) Winston Churchill

Offline Dalhousie

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The thread title is 5-T1, which I interpret as the first technology demonstrator for the CE-5 mission.

I'm just wondering if CE-4 is on the schedule in any way. A Space.com article refers to this mission as CE-4, which I'm pretty sure is wrong.

Chang'e-4 is being evaluated by the Chinese scientists at this time. The probe was developed as a back-up to Chang'e-3 and I suppose that the actual evaluation of the mission is related to the problems registered with the Yutu rover.

From http://news.xinhuanet.com/english/china/2014-10/10/c_127083174.htm "China's ailing moon rover weakening: designer"

"Yu said the Chang'e-4 mission is under further analysis.

As the backup probe of Chang'e-3, Chang'e-4 will verify technology for Chang'e-5. The more sophisticated Chang'e-5/6 missions are aimed for tasks including unmanned sampling and returning to Earth."

That's quite ambiguous.  It could mean that Cahng'e 4 is being used as a ground simulator.

I really would like to see another lunar rover.
"There is nobody who is a bigger fan of sending robots to Mars than me... But I believe firmly that the best, the most comprehensive, the most successful exploration will be done by humans" Steve Squyres

Offline Blackstar

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So I conversed a bit with a reporter about this issue. He says that he has a source who has provided some information on the CE-4 mission (lander/rover) and will be writing an article about that soon.

So maybe we will learn something new soon.

Offline plutogno

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more infors on CE-5T1 and the 4M experiment: http://amsat.org/pipermail/amsat-bb/2014-October/051011.html

Quote
4M (Manfred Memorial Moon Mission)

4M or Manfred Memorial Moon Mission is a mission dedicated to
LuxSpace founder, Prof. Manfred Fuchs, who died early this year. The
mission is a lunar flyby of a spacecraft that is attached to the last
stage of a Chinese Long March 3C rocket. The launch is scheduled for
October 23, 2014 at 1800 UTC.

Beijing plans to launch a Lunar spacecraft on a journey lasting 196
hours that should take it around the Moon before returning and re-
entering the Earth's atmosphere. It will carry a 14 kg payload known
as 4M-LXS which was developed at LuxSpace.

The 4M-LXS amateur radio payload will transmit on 145.980 MHz +/-
2.9kHz (-40°C to +125°C), Doppler max: -2200Hz, +1000Hz. The
continuous transmissions will start 4670s (77.8 minutes) after launch
(-0, +600s). Five successive 1 minute sequences are sent during the 5
minutes cycle. The digital mode JT65B will be used, this can be
decoded by radio amateurs using the free WJST software, there will
also be 'human readable' tone transmissions. See the transmit
sequence description on page 14 of 4M Mission: a Lunar FlyBy
experiment available at
https://ukamsat.files.wordpress.com/2014/09/lxs-4m-eme2014-a4-v3.pdf

During the lunar flyby, the range will be 399,636 km at the most and
the distance to the Moon will be between 12,000 and 24,000 km
depending on the final injection vector. The transmitter produces 1.5
watts to a simple Monopole antenna which should give a Signal to
Noise ratio ( S/N) comparable to amateur moon bounce (EME) signals at
the Earth's surface.

LuxSpace encourages radio amateurs around the world to receive the
transmissions and send in data. There will be a number of Experiments
and Contests with prizes to the winners in each experiment and
category. Details are given on page 19 of 4M Mission: a Lunar FlyBy
experiment.

A Java client will be made available to automatically send the WSJT
ALL.TXT and the decoded.txt files to a central database.

The orbiter is one of the test models for Beijing's new lunar probe
Chang'e-5, which will be tasked with landing on the moon, collecting
samples and returning to Earth. The launch is aimed at testing the
technologies that are vital for the success of Chang'e-5. The orbiter
will be launched into Lunar Transfer Orbit (LTO) then will perform a
flyby around the Moon and re-enter the Earth's atmosphere after 196
hours (9 days).

The orbiter arrived by air in Xichang, Sichuan on Sunday, August 10
and was then transported to the Xichang Satellite Launch Center.

The integration of the LX0OHB-4M amateur radio payload was completed
on Sunday night, October 12 and is now ready to launch

The onboard clock has been adjusted to start JT65B (145.980 MHz) at
the UTC minute +/-1 second. It is likely to drift during the mission,
and manual offset introduction will be required after a week or so.
The launch date is October 23 at 1800 UTC.

Beginning of transmission of 4M will start between 1917 UTC and 1927
UTC. Refer to the provided maps and animations links in the blog
section (see also older messages) to determine your visibility.
Alternatively, use the 'tracking' section where you can compute your
tracking elements by introducing your geographic coordinates. The
table can be copied/pasted into a text file. As the apparent movement
will be close (and closer) to the one one of the Moon, manual
pointing is easy but for the largest arrays.

The link budget is quite tight, but the first hours should give
comfortable signals. QSB is to be expected.

As JT65B is used: please remind those not yet too familiar with it
that the receiver must not be tuned during the transmission. A
dedicated webpage is being written to detail the procedure.

A dedicated java application is also available to automatically
transmit the decoded messages to the 4M website and ease the data
collection. (Thanks to LSE Space). Alternatively, you can also send
the decoded messages by eMail, sending the ALL.txt file.

For those not wishing to use JT65B, please record the signals
(11025s/s, 8or 16 bits, mono), taking care not to saturate the
recording and NO MP3 please.

SpectrumLab is an excellent choice, although some may wish to use
simpler recording software.

You can imagine that the team is quite eager to receive the first
reports, so, do not hesitate to mail immediately, send decoded
messages or even phone or text me at +352 661 678 986.

Our friends of IC CMalaga are also quite eager to receive the
results of their radiation dosimeter experiment.

Basic rules of the contest have been delineated in the blog section.
Complete rules will be published soon.

Stay tuned on our website or Facebook page.

The following is a tentative set of orbital elements that should
remain valid from the launch to at least up to the October 27 when
using usual classical and simple tracking software which does not
integrate Moon.

1 99999U          14298.79728009  .00000066  00000-0  00000-0 0 00006
2 99999 030.6553 295.6956 9746689 147.2577 071.9585 00.10600338000010

The following set is to be used after the flyby from October 28
onwards

1 99999U          14301.79728009  .00000000   00000-0 00000-0 0 00009
2 99999 049.9434 067.2017 6639865 045.9865 124.5019 00.06612018000010

Details on receiving signals from the Manfred Memorial Moon Mission
(4M) can be found at
http://moon.luxspace.lu/receiving-4m/

Ghislain Ruy LX2RG
Email ruy at luxspace.lu with "4M Amateur" in the subject

Manfred Memorial Moon Mission (4M) http://moon.luxspace.lu/
Facebook https://www.facebook.com/LuxSpaceSarl

The launch will be broadcast by CNTV/CCTV:
http://www.cntv.cn/ or
http://english.cntv.cn/ or
http://english.cntv.cn/live/p2p/index.shtml

Information animations and some JT65B test files at
http://tinyurl.com/ANS292-Animations

AMSAT-UK http://amsat-uk.org/
Facebook https://www.facebook.com/amsatuk
Twitter https://twitter.com/AMSAT_UK

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