Author Topic: LIVE: PSLV C22, IRNSS-R1A, FLP, July 1, 2013 (1811UTC)  (Read 100434 times)

Offline beidou

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The IRNSS launch has been delayed for quite some time. The original plan was to deploy the whole constellation (with 7 satellites) by the end of this year.
« Last Edit: 04/05/2014 12:13 pm by input~2 »

Offline Stan Black

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Re: IRNSS-1, PSLV C22 FLP, Q1 2013
« Reply #1 on: 10/06/2012 01:07 pm »
Are they still planning two spares and where will they end up?

Offline Galactic Penguin SST

Re: IRNSS-1, PSLV C22 FLP, Q1 2013
« Reply #2 on: 12/30/2012 09:15 pm »
Do we know if this launch is still scheduled in Q1 2013?

Oh and has the navigation system's ICD (or something like that) ever been released?
Astronomy & spaceflight geek penguin. In a relationship w/ Space Shuttle Discovery.

Offline antriksh

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Re: IRNSS-1, PSLV C22 FLP, Q1 2013
« Reply #3 on: 12/31/2012 07:48 pm »
Do we know if this launch is still scheduled in Q1 2013?

Oh and has the navigation system's ICD (or something like that) ever been released?

One navigation sat is planned in 2013 as per ISRO.

Nasadiya Sukta:
Srishti se pehle sat nahin thaa, asat bhi nahin | Antariksh bhi nahin, aakaash bhi nahin thaa | chhipaa thaa kyaa, kahaan, kisne dhakaa thaa | us pal to agam, atal jal bhi kahaan thaa ||

From: 1st verse of 129th Hymn of the 10th Book of Rig Veda

Offline antriksh

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Re: IRNSS-1, PSLV C22 FLP, Q1 2013
« Reply #4 on: 12/31/2012 11:09 pm »
Nasadiya Sukta:
Srishti se pehle sat nahin thaa, asat bhi nahin | Antariksh bhi nahin, aakaash bhi nahin thaa | chhipaa thaa kyaa, kahaan, kisne dhakaa thaa | us pal to agam, atal jal bhi kahaan thaa ||

From: 1st verse of 129th Hymn of the 10th Book of Rig Veda

Offline beidou

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Re: IRNSS-1, PSLV C22 FLP, Q1 2013
« Reply #5 on: 01/15/2013 03:25 pm »
Do we know if this launch is still scheduled in Q1 2013?

Oh and has the navigation system's ICD (or something like that) ever been released?

ICD was finalized years ago but wasn't released yet.

Offline m.prasad

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Re: IRNSS-1, PSLV C22 FLP, May 2013
« Reply #6 on: 01/22/2013 09:47 am »
ISRO is planning IRNSS-1 in May 2013 as per the latest news! It is supposed to be launched on new PSLV variant HP version (with improved 4th stage along with other improvements) that carries 2000kg payload. Pls refer.

I guess, this is still on papers as there is no news about this till now. So, we can assume, ISRO uses XL version for this launch (since payload weight is within XL range).

Thx
~Prasad
« Last Edit: 01/22/2013 09:56 am by m.prasad »

Offline m.prasad

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Re: IRNSS-1, PSLV C22 FLP, May 2013
« Reply #7 on: 01/22/2013 09:54 am »
Just asking with enthu...How much is the payload gain if PSLV uses:

1. S200 for 1st stage (instead of S139)
2. S12 for 3rd stage (instead of S7)

I mean, a PSLV with the following config:
Stage 1: S200 + 6 S12 Strap ons
Stage 2: L40H
Stage 3: S12
Stage 4: L2.5

Any guess? Would that be around 1600Kg-1700Kg?

Thx
~Prasad

Offline antriksh

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Re: IRNSS-1, PSLV C22 FLP, May 2013
« Reply #8 on: 01/22/2013 07:19 pm »
ISRO is planning IRNSS-1 in May 2013 as per the latest news! It is supposed to be launched on new PSLV variant HP version (with improved 4th stage along with other improvements) that carries 2000kg payload. Pls refer.

I guess, this is still on papers as there is no news about this till now. So, we can assume, ISRO uses XL version for this launch (since payload weight is within XL range).

Thx
~Prasad

XL version cannot be used for placing IRNSS sat in 240x24000 km (GTO) because its max payload capacity is 1300 kgs for GTO (refer attached PSLVvariants pic) and lift-off wt of the sat is around 1400-1425 kgs (from various isro ppts). HP version on the other hand has the required launch capacity (1440 kgs to GTO).

The two spare IRNSS sats will be launched into the 19140 km circular (i = 64.8 deg.) orbit by the GSLV MK2c (4 stages with PAM-G being the fourth stage, refer meo mission and PAM-G-Hot test)
« Last Edit: 01/23/2013 04:20 am by antriksh »
Nasadiya Sukta:
Srishti se pehle sat nahin thaa, asat bhi nahin | Antariksh bhi nahin, aakaash bhi nahin thaa | chhipaa thaa kyaa, kahaan, kisne dhakaa thaa | us pal to agam, atal jal bhi kahaan thaa ||

From: 1st verse of 129th Hymn of the 10th Book of Rig Veda

Offline antriksh

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Re: IRNSS-1, PSLV C22 FLP, May 2013
« Reply #9 on: 01/22/2013 07:45 pm »
Just asking with enthu...How much is the payload gain if PSLV uses:

1. S200 for 1st stage (instead of S139)
2. S12 for 3rd stage (instead of S7)

I mean, a PSLV with the following config:
Stage 1: S200 + 6 S12 Strap ons
Stage 2: L40H
Stage 3: S12
Stage 4: L2.5

Any guess? Would that be around 1600Kg-1700Kg?

Thx
~Prasad

probably around 1200-1500 kgs
Nasadiya Sukta:
Srishti se pehle sat nahin thaa, asat bhi nahin | Antariksh bhi nahin, aakaash bhi nahin thaa | chhipaa thaa kyaa, kahaan, kisne dhakaa thaa | us pal to agam, atal jal bhi kahaan thaa ||

From: 1st verse of 129th Hymn of the 10th Book of Rig Veda

Offline Stan Black

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Re: IRNSS-1, PSLV C22 FLP, May 2013
« Reply #10 on: 01/23/2013 08:59 pm »
The two spare IRNSS sats will be launched into the 19140 km circular (i = 64.8 deg.) orbit by the GSLV MK2c (4 stages with PAM-G being the fourth stage, refer meo mission and PAM-G-Hot test)

That was originally planned for two Russian GLONASS Uragan-M?

Offline antriksh

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Re: IRNSS-1, PSLV C22 FLP, May 2013
« Reply #11 on: 01/23/2013 09:59 pm »
The two spare IRNSS sats will be launched into the 19140 km circular (i = 64.8 deg.) orbit by the GSLV MK2c (4 stages with PAM-G being the fourth stage, refer meo mission and PAM-G-Hot test)

That was originally planned for two Russian GLONASS Uragan-M?

Yes you are right. I got it wrong from the attached slide. Or May be ISRO is planning the 2 spare IRNSS sats (apart from the 7 sats to be launched by PSLV) in the same 19100 km orbit?

Nasadiya Sukta:
Srishti se pehle sat nahin thaa, asat bhi nahin | Antariksh bhi nahin, aakaash bhi nahin thaa | chhipaa thaa kyaa, kahaan, kisne dhakaa thaa | us pal to agam, atal jal bhi kahaan thaa ||

From: 1st verse of 129th Hymn of the 10th Book of Rig Veda

Offline isro-watch

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Re: IRNSS-1, PSLV C22 FLP, May 2013
« Reply #12 on: 02/26/2013 03:58 am »
ISRO is planning IRNSS-1 in May 2013 as per the latest news! It is supposed to be launched on new PSLV variant HP version (with improved 4th stage along with other improvements) that carries 2000kg payload. Pls refer.

I guess, this is still on papers as there is no news about this till now. So, we can assume, ISRO uses XL version for this launch (since payload weight is within XL range).

Thx
~Prasad

XL version cannot be used for placing IRNSS sat in 240x24000 km (GTO) because its max payload capacity is 1300 kgs for GTO (refer attached PSLVvariants pic) and lift-off wt of the sat is around 1400-1425 kgs (from various isro ppts). HP version on the other hand has the required launch capacity (1440 kgs to GTO).

The two spare IRNSS sats will be launched into the 19140 km circular (i = 64.8 deg.) orbit by the GSLV MK2c (4 stages with PAM-G being the fourth stage, refer meo mission and PAM-G-Hot test)

PSLV-C17 an XL version carried GSAT-12 which was 1450 Kg
http://www.isro.org/pslv-c17/pdf/pslv-c17-brochure.pdf#PSLV-C17

Offline m.prasad

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Re: IRNSS-1, PSLV C22 FLP, May 2013
« Reply #13 on: 03/08/2013 06:45 am »
ISRO is planning IRNSS-1 in May 2013 as per the latest news! It is supposed to be launched on new PSLV variant HP version (with improved 4th stage along with other improvements) that carries 2000kg payload. Pls refer.

I guess, this is still on papers as there is no news about this till now. So, we can assume, ISRO uses XL version for this launch (since payload weight is within XL range).

Thx
~Prasad

XL version cannot be used for placing IRNSS sat in 240x24000 km (GTO) because its max payload capacity is 1300 kgs for GTO (refer attached PSLVvariants pic) and lift-off wt of the sat is around 1400-1425 kgs (from various isro ppts). HP version on the other hand has the required launch capacity (1440 kgs to GTO).

The two spare IRNSS sats will be launched into the 19140 km circular (i = 64.8 deg.) orbit by the GSLV MK2c (4 stages with PAM-G being the fourth stage, refer meo mission and PAM-G-Hot test)

PSLV-C17 an XL version carried GSAT-12 which was 1450 Kg
http://www.isro.org/pslv-c17/pdf/pslv-c17-brochure.pdf#PSLV-C17
Yes! You are right. I think it is the special orbit (not the payload weight) that mandates ISRO to use PSLV-HP (incl improved 4th stage with PAM-G) instead of XL version.

Thx
~Prasad
« Last Edit: 03/08/2013 06:46 am by m.prasad »

Offline input~2

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Offline antriksh

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Re: IRNSS-R1A, PSLV C22 FLP, June 2013
« Reply #15 on: 04/18/2013 02:44 am »
The launch campaign started (15th of this month), PS1-NES has been moved to Mobile Service Tower (MST).


About the sat:

Type/Applications:    Navigation
 
Orbit Location: 55E Geo
 
Mission Life: 12 Years
 
Equipments: L5 & S-band Navigation payload
                     C-band Ranging Payload
 Frequency:
C-band: U/L:     6700 6725 MHz (RHCP)      D/L:     3400 3425 MHz (LHCP)
L5-band: D/L:     1176.45 MHz (BW-24 MHz) (RHCP)
S-band: D/L:     2492.028 MHz (BW-16.5 MHz) (RHCP)

http://www.sac.gov.in/SACSITE/IRNSS-1A.html
Nasadiya Sukta:
Srishti se pehle sat nahin thaa, asat bhi nahin | Antariksh bhi nahin, aakaash bhi nahin thaa | chhipaa thaa kyaa, kahaan, kisne dhakaa thaa | us pal to agam, atal jal bhi kahaan thaa ||

From: 1st verse of 129th Hymn of the 10th Book of Rig Veda

Offline input~2

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Re: IRNSS-R1A, PSLV C22 FLP, June 2013
« Reply #16 on: 04/23/2013 06:30 am »
Launch planned for the second week of June
(source)

Offline input~2

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Re: IRNSS-R1A, PSLV C22 FLP, June 2013
« Reply #17 on: 04/23/2013 06:41 am »
About the sat:

Type/Applications:    Navigation
 
Orbit Location: 55E Geo
 
http://www.sac.gov.in/SACSITE/IRNSS-1A.html

Per ISRO annual report 2012-13, 55E will be used for inclined (29 degrees) geosynchronous operation

Offline Galactic Penguin SST

Astronomy & spaceflight geek penguin. In a relationship w/ Space Shuttle Discovery.

Offline input~2

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Re: IRNSS-R1A, PSLV C22 FLP, June 11, 2013
« Reply #19 on: 05/15/2013 02:21 pm »
Launch now planned on June 12, at 01:01am LT (June 11, at 1931UTC)
(source in Telugu)
« Last Edit: 05/15/2013 02:29 pm by input~2 »

 

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