Author Topic: LIVE: PSLV(XL) C26, FLP, IRNSS-1C, October 15 2014 (2002UTC) (Read 69481 times)

vineethgk · « **Reply #20 on:** 10/07/2014 10:27 am »

Quote from: vyoma on 10/07/2014 06:11 am

Quote
“A technical snag has been observed in the tele-command system. We will review the exact condition on Tuesday and then decide a new date for the launch,” an Isro official said.

http://www.hindustantimes.com/india-news/isro-delays-launch-of-satellite-due-to-technical-snag/article1-1272434.aspx

Is the tele-command system that they are referring is something that the satellite has, or is it the ground infrastructure that they use for telemetry?

vyoma · « **Reply #21 on:** 10/08/2014 03:02 am »

Quote from: vineethgk on 10/07/2014 10:27 am

Quote from: vyoma on 10/07/2014 06:11 am
Quote
“A technical snag has been observed in the tele-command system. We will review the exact condition on Tuesday and then decide a new date for the launch,” an Isro official said.

http://www.hindustantimes.com/india-news/isro-delays-launch-of-satellite-due-to-technical-snag/article1-1272434.aspx

Is the tele-command system that they are referring is something that the satellite has, or is it the ground infrastructure that they use for telemetry?

Not sure. They say a small anomaly was found during launch rehearsal. May be something in the LV itself.

Quote

Asked about the reasons for the postponement, a senior ISRO official said, "The rehearsal of the launch was done last night. We have observed a small anomaly. A particular item was not functioning properly."

"After some brainstorming, we decided that all the tests would be done to ensure perfection before launch.The defective item will be replaced. We have to open the heat shield and work, so it will require at least two to three days," he said.

http://www.newindianexpress.com/cities/chennai/IRNSS-1C-Launch-Postponed-Due-to-Technical-Reasons/2014/10/06/article2464694.ece

seshagirib · « **Reply #22 on:** 10/08/2014 06:04 am »

^Since they plan to open the heat shield to fix the issue, the problem is for sure in the LV or S/C and is definitely not in the ground infrastructure.

input~2 · « **Reply #23 on:** 10/09/2014 09:07 am »

New launch time: October 15 at 2002UTC

ISRO @isro ·

Based on the mission requirements, the launch window for PSLV C26/IRNSS 1C is 01:32 AM to 01:47 AM (IST) on 16/10/14.

Websorber · « **Reply #24 on:** 10/10/2014 01:40 pm »

FYI

Nozzle End Segment of the first stage of PSLV C26 photographed along with the launch pedestal

Source:@ISRO

antriksh · « **Reply #25 on:** 10/12/2014 02:50 pm »

ISRO ‏@isro

LaunchAuthorizationBoard has authorized the launch of PSLV C26/IRNSS 1C & the countdown is all set to commence tomorrow morning@06:32AM(IST)

sanman · « **Reply #26 on:** 10/12/2014 03:19 pm »

http://www.financialexpress.com/news/isro-to-launch-navigation-satellite-irnss-1c-countdown-begins-tomorrow/1297678?rhnews

I think it's great that another IRNSS satellite will go into orbit with this launch. But as a space fan, I just want this launch out of the way so that the main focus will return to the upcoming GSLV Mk3 launch. I'm really fed up of waiting on all the launch postponements for Mk3.

worldtimedate · « **Reply #27 on:** 10/12/2014 09:25 pm »

Quote

http://www.financialexpress.com/news/isro-to-launch-navigation-satellite-irnss-1c-countdown-begins-tomorrow/1297678?rhnews

I think it's great that another IRNSS satellite will go into orbit with this launch. But as a space fan, I just want this launch out of the way so that the main focus will return to the upcoming GSLV Mk3 launch. I'm really fed up of waiting on all the launch postponements for Mk3.

This is my feeling too. In spite of the PSLV being established as reliable and workhorse Launch Vehicle, ISRO should focus on complete the development and operationalization of GSLV MK3 as soon as possible. I have been crying foul over this matter in the last 5 years since G. Madhavan Nair who retired as ISRO chief was quoted as saying that it is the domain of the launch vehicles where India is lagging behind China and the widening gap could be reduced once the GSLV MK3 development and operationalization is complete. But that did not happen.

Otherwise until GSLV MK3 fructifies, ISRO will further fall by the wayside as far as the launching of the Heavy Satellites are concerned.

Ohsin · « **Reply #28 on:** 10/13/2014 01:23 am »

Quote

The 67 hour countdown for the launch of PSLV C26 with IRNSS 1C has just begun

ISRO Tweet

vineethgk · « **Reply #29 on:** 10/13/2014 04:28 am »

As per latest update, MMH propellant loading for PS4 has started

Source

vineethgk · « **Reply #30 on:** 10/13/2014 04:41 am »

Quote from: worldtimedate on 10/12/2014 09:25 pm

Quote

http://www.financialexpress.com/news/isro-to-launch-navigation-satellite-irnss-1c-countdown-begins-tomorrow/1297678?rhnews

I think it's great that another IRNSS satellite will go into orbit with this launch. But as a space fan, I just want this launch out of the way so that the main focus will return to the upcoming GSLV Mk3 launch. I'm really fed up of waiting on all the launch postponements for Mk3.

This is my feeling too. In spite of the PSLV being established as reliable and workhorse Launch Vehicle, ISRO should focus on complete the development and operationalization of GSLV MK3 as soon as possible. I have been crying foul over this matter in the last 5 years since G. Madhavan Nair who retired as ISRO chief was quoted as saying that it is the domain of the launch vehicles where India is lagging behind China and the widening gap could be reduced once the GSLV MK3 development and operationalization is complete. But that did not happen.

Otherwise until GSLV MK3 fructifies, ISRO will further fall by the wayside as far as the launching of the Heavy Satellites are concerned.

worldtimedate [ http://www.world-timedate.com/ ]

In a different perspective, it may not really matter much if the GSLV-III-X flight is conducted this year or early next, unless there are chances of major flaws with the lower stage design. The C-25 upper stage has got another 2 years at the minimum before it gets ready. On the other hand, the apparent urgency seen in getting IRNSS up and running indicates that the Govt considers an independent navigation satellite system as of utmost priority for the Indian military. Just my thoughts..

vineethgk · « **Reply #31 on:** 10/13/2014 08:15 am »

Mono-Methyl Hydrazine (MMH) Propellant filling operation of Fourth Stage (PS4) of PSLV-C26 is completed.
Propellant (MMH) filling of Reaction Control Thrusters (RCT) of First Stage (PS1) is completed.

Source

vineethgk · « **Reply #32 on:** 10/15/2014 06:24 am »

Nitrogen Tetroxide (N2O4) Propellant filling operation of Second Stage (PS2) is completed.
Mobile Service Tower (MST) withdrawal upto 50 m is completed.

Source