Author Topic: Apstar-7 CZ-3B/E launch - March 31, 2012  (Read 30766 times)

Online Satori

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Apstar-7 CZ-3B/E launch - March 31, 2012
« on: 03/22/2012 03:29 pm »
From the 9ifly Chinese space forum... looks like we have a rocket on the launch pad!

Offline beidou

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Re: Apstar-7 CZ-3B/E launch - March 31, 2012
« Reply #1 on: 03/23/2012 10:53 am »
Where was the rocket? Can't see it.

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Re: Apstar-7 CZ-3B/E launch - March 31, 2012
« Reply #2 on: 03/23/2012 10:56 am »
Where was the rocket? Can't see it.

On the center of the moving parts of the service structure one can see a white form, isn't that the rocket?

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Re: Apstar-7 CZ-3B/E launch - March 31, 2012
« Reply #3 on: 03/29/2012 03:03 am »
I really hate how the Chinese hide the launch date and time until the last minute....  :-X

Quote
A0222/12 - A TEMPORARY RESTRICTED AREA ESTABLISHED BOUNDED BY N272159E1083650-N273125E1074313-N271528E1073946-N270603E1083315 BACK TO START. VERTICAL LIMITS: SFC-UNL.ALL ACFT ARE PROHIBITED TO FLY INTO THE AREA. SFC - UNL, 31 MAR 10:20 2012 UNTIL 31 MAR 11:04 2012. CREATED: 29 MAR 02:56 2012

A0223/12 - A TEMPORARY RESTRICTED AREA ESTABLISHED BOUNDED BY N260808E1142921-N261444E1140013-N255857E1135553-N255223E1142456 BACK TO START. VERTICAL LIMITS: SFC-UNL.ALL ACFT ARE PROHIBITED TO FLY INTO THE AREA. SFC - UNL, 31 MAR 10:21 2012 UNTIL 31 MAR 11:14 2012. CREATED: 29 MAR 02:57 2012

Launch time: March 31, 2012 @ 10:25 UTC +- 5 minutes
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Online Galactic Penguin SST

Re: Apstar-7 CZ-3B/E launch - March 31, 2012
« Reply #4 on: 03/29/2012 05:48 am »
A mission overview webpage by CGWIC: http://cn.cgwic.com/APSTAR-7/

Target orbit: 200 x 50281 km x 24.7 deg.

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Offline input~2

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Re: Apstar-7 CZ-3B/E launch - March 31, 2012
« Reply #5 on: 03/29/2012 09:25 am »
A mission overview webpage by CGWIC: http://cn.cgwic.com/APSTAR-7/

Target orbit: 200 x 50281 km x 24.7 deg.

The 3sigma accuracies of the parameters of this injection orbit are worth noting:
±30km for perigee altitude
±451km for apogee altitude
±0.21° for inclination
±0.60° for argument of perigee (179.0°)

The altitude of the first apogee crossing (after injection) is planned to be 50000km

Online Galactic Penguin SST

Re: Apstar-7 CZ-3B/E launch - March 31, 2012
« Reply #6 on: 03/29/2012 09:27 am »
A mission overview webpage by CGWIC: http://cn.cgwic.com/APSTAR-7/

Target orbit: 200 x 50281 km x 24.7 deg.

The 3sigma accuracies of the parameters of this injection orbit are worth noting:
±30km for perigee altitude
±451km for apogee altitude
±0.21° for inclination
±0.60° for argument of perigee (179.0°)

The altitude of the first apogee crossing (after injection) is planned to be 50000km


Apparently there's a typo: for 24.7 degrees, read 27.4 degrees.
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Offline input~2

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Re: Apstar-7 CZ-3B/E launch - March 31, 2012
« Reply #7 on: 03/30/2012 07:03 am »
27.4° inclination confirmed from CZ-3B/E user's manual

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Re: Apstar-7 CZ-3B/E launch - March 31, 2012
« Reply #8 on: 03/30/2012 01:25 pm »
The rocket is CZ-3B s/n Y22. (source)

This will be the 50th flight of the CZ-3A family (CZ-3A/B/C).
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Re: Apstar-7 CZ-3B/E launch - March 31, 2012
« Reply #9 on: 03/31/2012 08:57 am »
The access platforms on the pad are retracting for the launch at T-90 minutes...
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Offline input~2

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Re: Apstar-7 CZ-3B/E launch - March 31, 2012
« Reply #10 on: 03/31/2012 09:54 am »
« Last Edit: 03/31/2012 10:00 am by input~2 »

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Re: Apstar-7 CZ-3B/E launch - March 31, 2012
« Reply #11 on: 03/31/2012 09:57 am »
We are around T-30 m for launch.

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Re: Apstar-7 CZ-3B/E launch - March 31, 2012
« Reply #12 on: 03/31/2012 10:03 am »
Assuming a launch time of 1025UTC, at this time we are a T-22 when Stage-3 Engines pre-cooling takes place.

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Re: Apstar-7 CZ-3B/E launch - March 31, 2012
« Reply #13 on: 03/31/2012 10:17 am »
At this time the spacecraft umbilical must have been disconnected.

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Re: Apstar-7 CZ-3B/E launch - March 31, 2012
« Reply #14 on: 03/31/2012 10:18 am »
Looks like launch time is 1027UTC

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Re: Apstar-7 CZ-3B/E launch - March 31, 2012
« Reply #15 on: 03/31/2012 10:23 am »
T-4m The telemetry and tracking systems power are switch-over;
Fueling pipes disconnection of LV Stage-3.

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Re: Apstar-7 CZ-3B/E launch - March 31, 2012
« Reply #16 on: 03/31/2012 10:25 am »
T-2m Gas pipes disconnection of LV Stage-3.

Offline input~2

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Re: Apstar-7 CZ-3B/E launch - March 31, 2012
« Reply #17 on: 03/31/2012 10:25 am »
Looks like launch time is 1027UTC

yes
Quote
在西昌卫星发射基地观看亚太卫星七号发射。18点27分准时发射。

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Re: Apstar-7 CZ-3B/E launch - March 31, 2012
« Reply #18 on: 03/31/2012 10:26 am »
T-60s Control System power switch-over; Umbilical disconnections of Control System & TT&C Swing off of supporting arms of Umbilical Tower

Offline input~2

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Re: Apstar-7 CZ-3B/E launch - March 31, 2012
« Reply #19 on: 03/31/2012 10:27 am »

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