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#120 by Steven Pietrobon on 11 Mar, 2016 08:45
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William's article - https://www.nasaspaceflight.com/2016/03/india-launches-irnss-1f
I wonder why it refers to this as India's sixteenth orbital launch though..
I believe the article is referring to the 16th geosynchronous transfer orbit (GTO) launch. Of course, ISRO has had a lot more than 16 orbital launches. -
#121 by russianhalo117 on 11 Mar, 2016 13:58
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maybe 16th on PSLV??William's article - https://www.nasaspaceflight.com/2016/03/india-launches-irnss-1f
I wonder why it refers to this as India's sixteenth orbital launch though..
I believe the article is referring to the 16th geosynchronous transfer orbit (GTO) launch. Of course, ISRO has had a lot more than 16 orbital launches. -
#122 by Steven Pietrobon on 12 Mar, 2016 04:53
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maybe 16th on PSLV??
I don't think that's it. PSLV (all versions) has launched 34 times. PSLV-XL has launched 12 times. -
#123 by seshagirib on 12 Mar, 2016 07:19
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William's article - https://www.nasaspaceflight.com/2016/03/india-launches-irnss-1f
I wonder why it refers to this as India's sixteenth orbital launch though..
I believe the article is referring to the 16th geosynchronous transfer orbit (GTO) launch. Of course, ISRO has had a lot more than 16 orbital launches.
I think this is correct.
http://www.isro.gov.in/launchers/list-of-pslv-launches
and
http://www.isro.gov.in/launchers/gslv
give a complete list of PSLV and GSLV launches.
I count 9, PSLV missions to GTO + GSO
and
7 successful GSLV launches.
16 GTO launches in all !
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#124 by Ohsin on 12 Mar, 2016 07:53
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Quote
Mar 12, 2016
The apogee raise maneuver of IRNSS-1F has been successfully carried out
The apogee raise maneuver of IRNSS-1F has been successfully carried out for 1192 sec from 16:16 hrs IST on March 11, 2016.
Orbit Determination results from this LAM firing are:
apogee X perigee height was changed to 35828 kmX 318.5 km. Inclination is 17.86 deg. Orbital period is 10hr 34min.
http://isro.gov.in/update/12-mar-2016/apogee-raise-maneuver-of-irnss-1f-has-been-successfully-carried-outQuoteMar 12, 2016
Second LAM firing of IRNSS-1F, at apogee for 1918.5 sec has been successfully completed on 12.3.2016 starting from 07:57:54 hr IST.
http://isro.gov.in/update/12-mar-2016/second-lam-firing-of-irnss-1f-apogee-19185-sec-has-been-successfully-completed -
#125 by Ohsin on 13 Mar, 2016 08:45
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Quote
Mar 13, 2016
http://www.isro.gov.in/update/13-mar-2016/irnss-1f-updateorbit-determination-results-second-lam-firing
IRNSS 1F UPDATE:Orbit Determination results from second LAM firing
Orbit Determination results from second LAM firing are:
apogee X perigee height was changed to 35737km, 9831 km, Inclination is 9.75deg. Orbital period now is 13h 46mQuoteMar 13, 2016
http://www.isro.gov.in/update/13-mar-2016/irnss-1f-update-third-lam-firing-of-irnss-1f-1561-sec-has-been-successfully
IRNSS 1F UPDATE: Third LAM firing of IRNSS-1F, for 1561 sec has been successfully completed on 13.3.2016 starting from 11:32 hr IST. -
#126 by seshagirib on 14 Mar, 2016 04:25
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^
http://www.isro.gov.in/update/14-mar-2016/irnss-1f-updateorbit-determination-results-third-lam-firingQuoteMar 14, 2016
IRNSS 1F UPDATE:Orbit Determination results from the third LAM firing
Orbit Determination results from the third LAM firing are:
apogee X perigee height was changed to 35749km, 33355km, Inclination is 5.271deg. Orbital period now is 22hr 53m -
#127 by arun289 on 14 Mar, 2016 10:40
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Hi,
The PSLV-C32 launch as seen from Chennai, India. I took these pictures from my terrace. Chennai is about 80 km from Sriharikota, the launch site.
Please find attached a picture which show strap on boosters 1,2,3 and 4 falling off.
More pictures in my post here:
http://indstronomy.com/pslv-c32-irnss-1f-successfully-launched/
and here:
http://wondroussky.blogspot.in/2016/03/pslv-c32-launch-as-seen-from-chennai.html
Regards,
Arun -
#128 by vineethgk on 14 Mar, 2016 11:24
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Hi,
Thats great Arun! Thanks and keep posting!
The PSLV-C32 launch as seen from Chennai, India. I took these pictures from my terrace. Chennai is about 80 km from Sriharikota, the launch site.
Please find attached a picture which show strap on boosters 1,2,3 and 4 falling off.
More pictures in my post here:
http://indstronomy.com/pslv-c32-irnss-1f-successfully-launched/
and here:
http://wondroussky.blogspot.in/2016/03/pslv-c32-launch-as-seen-from-chennai.html
Regards,
Arun
I myself visit Chennai frequently, maybe next time I should time my visit with launch schedules to see them with my own eyes. Can you tell me the places near Chennai (or to its north) that affords the best views? -
#129 by Ohsin on 14 Mar, 2016 14:18
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Magnificent side-view! This also makes me wonder if those red stripes are there for visibility rather than just pomp. Also have you ever managed to catch Ullage motors flying off? Thanks for sharing these.
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#130 by arun289 on 14 Mar, 2016 14:21
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Thats great Arun! Thanks and keep posting!
I myself visit Chennai frequently, maybe next time I should time my visit with launch schedules to see them with my own eyes. Can you tell me the places near Chennai (or to its north) that affords the best views?
Thanks Vineeth,
The launch is clearly visible from Chennai on a clear day. But the real beast is the sound. To hear the sound you have to head to Sriharikota. And it is an unforgettable experience. To go inside ISRO you need an invite. I have never been inside. I normally drive up to Pulikat lake where security will not allow you to proceed further. You need to take a small road parallel to the launch pad. You get a decent view from there. The launch pad itself is around 11 km from that location. When the sound arrives, it is an experience. I try to make it for most of the launches. This time I had to turn back because of traffic and I knew that I cannot make it before the launch.
Regards,
Arun
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#131 by arun289 on 14 Mar, 2016 14:42
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Magnificent side-view! This also makes me wonder if those red stripes are there for visibility rather than just pomp. Also have you ever managed to catch Ullage motors flying off? Thanks for sharing these.
Thanks Ohsin,
I am not sure. Please look at the attached picture. This was captured a few seconds after the rocket cruised for some time after first stage burnout. This happened just before the first stage separation and second stage ignition.
Regards,
Arun
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#132 by Ohsin on 14 Mar, 2016 15:20
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Just went through your blog. Really nice
This time around in launch coverage they zoomed into screen of Mission Director(attached) So ullage motors jettisoned ~11 seconds after first stage separation. In C29 launch I think those were seen.
I think we can see shaped charge going off as well!
People as far as Chennai reported seeing FOUR objects drop off after PS1 stage separation. First two I assume must have been Ullage motors and other two, halves of heat shield. Very rare to be seen.
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#133 by Ohsin on 15 Mar, 2016 10:21
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Quote
Mar 14, 2016
IRNSS 1F UPDATE: Fourth LAM firing of IRNSS-1F, for 78.8 sec has been successfully completed on 14.3.2016 starting from 11:42:44 hr (IST).
http://www.isro.gov.in/update/14-mar-2016/irnss-1f-update-fourth-lam-firing-of-irnss-1f-788-sec-has-been-successfullyQuoteMar 15, 2016
IRNSS 1F UPDATE: Orbit Determination results from fourth LAM firing
Orbit Determination results from fourth LAM firing are:
Apogee X perigee height was changed to 35749 km, 35605 km
Inclination is 5.097deg
Orbital period now is 23hr 50min 32sec
http://www.isro.gov.in/update/15-mar-2016/irnss-1f-update-orbit-determination-results-fourth-lam-firing
So all four burns complete. Should get co-located within a week or two. -
#134 by Ohsin on 24 Mar, 2016 01:20
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41384 IRNSS 1F 2016-015A 1436.13 5.09 35874 km 35700 km
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#135 by Ohsin on 30 Mar, 2016 13:56
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Quote
After successful completion of four station acquisition maneuvers and In Orbit Testing (IOT) of the spacecraft, IRNSS-1F has been placed in the intended Geo-synchronous orbit
http://www.isro.gov.in/update/30-mar-2016/irnss-1f-update-after-successful-completion-of-four-station-acquisition
