Author Topic: LIVE: IRNSS-1I - PSLV-XL (C41) - April 11, 2018 (22:34 UTC)  (Read 41131 times)

Offline vineethgk

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Re: LIVE: IRNSS-1I - PSLV-XL (C41) - April 11, 2018 (22:34 UTC)
« Reply #120 on: 04/11/2018 10:38 pm »
Aaaargh... The camera man zoomed in on people's faces in MCC when they had the airlit strapon separation and PS1 separation events..

Offline ZachS09

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Re: LIVE: IRNSS-1I - PSLV-XL (C41) - April 11, 2018 (22:34 UTC)
« Reply #121 on: 04/11/2018 10:39 pm »
We have SECO, second stage separation, and third stage ignition. Third stage will burn for 112 seconds.
Liftoff for St. Jude's! Go Dragon, Go Falcon, Godspeed Inspiration4!

Offline Steven Pietrobon

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Re: LIVE: IRNSS-1I - PSLV-XL (C41) - April 11, 2018 (22:34 UTC)
« Reply #122 on: 04/11/2018 10:39 pm »
Fairing separation.

T+4 minutes.

Second stage separation. Third stage ignition.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline ZachS09

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Re: LIVE: IRNSS-1I - PSLV-XL (C41) - April 11, 2018 (22:34 UTC)
« Reply #123 on: 04/11/2018 10:39 pm »
T+5 minutes. Third stage propulsion healthy; trajectory also is nominal.
Liftoff for St. Jude's! Go Dragon, Go Falcon, Godspeed Inspiration4!

Offline Steven Pietrobon

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Re: LIVE: IRNSS-1I - PSLV-XL (C41) - April 11, 2018 (22:34 UTC)
« Reply #124 on: 04/11/2018 10:40 pm »
T+5 minutes. Third stage performance normal.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline ZachS09

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Re: LIVE: IRNSS-1I - PSLV-XL (C41) - April 11, 2018 (22:34 UTC)
« Reply #125 on: 04/11/2018 10:40 pm »
Nominal flight so far.
Liftoff for St. Jude's! Go Dragon, Go Falcon, Godspeed Inspiration4!

Offline ZachS09

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Re: LIVE: IRNSS-1I - PSLV-XL (C41) - April 11, 2018 (22:34 UTC)
« Reply #126 on: 04/11/2018 10:40 pm »
Third stage has now burnt out. Between the burnout and third stage separation, there will be a 222-second coast phase. Ten seconds after third stage separation, the two fourth stage engines will start up.
Liftoff for St. Jude's! Go Dragon, Go Falcon, Godspeed Inspiration4!

Offline Steven Pietrobon

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Re: LIVE: IRNSS-1I - PSLV-XL (C41) - April 11, 2018 (22:34 UTC)
« Reply #127 on: 04/11/2018 10:41 pm »
T+6 minutes.

Third stage cutoff.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline ZachS09

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Re: LIVE: IRNSS-1I - PSLV-XL (C41) - April 11, 2018 (22:34 UTC)
« Reply #128 on: 04/11/2018 10:41 pm »
Coast phase is as expected.
Liftoff for St. Jude's! Go Dragon, Go Falcon, Godspeed Inspiration4!

Offline Steven Pietrobon

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Re: LIVE: IRNSS-1I - PSLV-XL (C41) - April 11, 2018 (22:34 UTC)
« Reply #129 on: 04/11/2018 10:41 pm »
T+7 minutes.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline ZachS09

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Re: LIVE: IRNSS-1I - PSLV-XL (C41) - April 11, 2018 (22:34 UTC)
« Reply #130 on: 04/11/2018 10:42 pm »
Very close to preflight predictions.
Liftoff for St. Jude's! Go Dragon, Go Falcon, Godspeed Inspiration4!

Offline Steven Pietrobon

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Re: LIVE: IRNSS-1I - PSLV-XL (C41) - April 11, 2018 (22:34 UTC)
« Reply #131 on: 04/11/2018 10:43 pm »
T+8 minutes. Still coasting.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline ZachS09

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Re: LIVE: IRNSS-1I - PSLV-XL (C41) - April 11, 2018 (22:34 UTC)
« Reply #132 on: 04/11/2018 10:43 pm »
According to the onboard rocketcam, PSLV has seen its first sunrise.
Liftoff for St. Jude's! Go Dragon, Go Falcon, Godspeed Inspiration4!

Offline Steven Pietrobon

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Re: LIVE: IRNSS-1I - PSLV-XL (C41) - April 11, 2018 (22:34 UTC)
« Reply #133 on: 04/11/2018 10:44 pm »
T+9 minutes.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline ZachS09

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Re: LIVE: IRNSS-1I - PSLV-XL (C41) - April 11, 2018 (22:34 UTC)
« Reply #134 on: 04/11/2018 10:44 pm »
T+10 minutes. Third stage has separated from the fourth stage. Standing by for engine start.
Liftoff for St. Jude's! Go Dragon, Go Falcon, Godspeed Inspiration4!

Offline ZachS09

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Re: LIVE: IRNSS-1I - PSLV-XL (C41) - April 11, 2018 (22:34 UTC)
« Reply #135 on: 04/11/2018 10:44 pm »
Engine start has been confirmed. This single burn of the fourth stage will last 514 seconds until T+1123 seconds.
Liftoff for St. Jude's! Go Dragon, Go Falcon, Godspeed Inspiration4!

Offline Steven Pietrobon

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Re: LIVE: IRNSS-1I - PSLV-XL (C41) - April 11, 2018 (22:34 UTC)
« Reply #136 on: 04/11/2018 10:45 pm »
T+10 minutes. Third stage separation.

Fourth stage ignition.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline worldtimedate

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Re: LIVE: IRNSS-1I - PSLV-XL (C41) - April 11, 2018 (22:34 UTC)
« Reply #137 on: 04/11/2018 10:45 pm »
Third stage has seprated at 597 secnods. Fourth stage has ignited at 600 seconds. Fourth Stage performance is normal.

Offline ZachS09

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Re: LIVE: IRNSS-1I - PSLV-XL (C41) - April 11, 2018 (22:34 UTC)
« Reply #138 on: 04/11/2018 10:45 pm »
Fourth stage propulsion healthy.

PSLV is orbital.
Liftoff for St. Jude's! Go Dragon, Go Falcon, Godspeed Inspiration4!

Offline ZachS09

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Re: LIVE: IRNSS-1I - PSLV-XL (C41) - April 11, 2018 (22:34 UTC)
« Reply #139 on: 04/11/2018 10:46 pm »
T+11 and a half minutes.
Liftoff for St. Jude's! Go Dragon, Go Falcon, Godspeed Inspiration4!

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