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?
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
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 onsStage 2: L40HStage 3: S12Stage 4: L2.5Any guess? Would that be around 1600Kg-1700Kg?Thx~Prasad
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)
Quote from: antriksh on 01/22/2013 07:19 pmThe 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?
Quote from: m.prasad on 01/22/2013 09:47 amISRO 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~PrasadXL 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)
Quote from: antriksh on 01/22/2013 07:19 pmQuote from: m.prasad on 01/22/2013 09:47 amISRO 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~PrasadXL 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 Kghttp://www.isro.org/pslv-c17/pdf/pslv-c17-brochure.pdf#PSLV-C17
About the sat:Type/Applications: Navigation Orbit Location: 55°E Geo http://www.sac.gov.in/SACSITE/IRNSS-1A.html