Author Topic: LIVE: IRNSS-1I - PSLV-XL (C41) - April 11, 2018 (22:34 UTC)  (Read 46067 times)

Offline Steven Pietrobon

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Re: IRNSS-1I, PSLV C41 , FLP, April 12 2018
« Reply #20 on: 04/06/2018 04:37 am »
How do you know that the recent failures are not just coincidental? I think its impossible to know! These could be just random failures. I'm sure ISRO is doing the best job they can. When there are failures, ISRO will learn from them so that the chance of them happening again is greatly reduced.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Re: IRNSS-1I, PSLV C41 , FLP, April 12 2018
« Reply #21 on: 04/06/2018 06:12 am »
NOTAM is out :)

A1116/18 NOTAMN
Q) WMFC/QWMLW/IV/BO /W /000/999/
A) WMFC B) 1804112145 C) 1804200145
D) APR 11 2145 - 2359
DLY FM APR 12 - APR 19 BTN 2145 - 2359 AND 0000 - 0145
APR 20 0000 - O145
E) TEMPO DNG AREA ESTABLISHED WI THE FLW COORD DUE TO THE LAUNCHING
OF PSLV-C41 ROCKET FM SHAR RANGE, SRIHARIKOTA, INDIA:
090500N 0945000E - 095500N 0950500E -
093500N 0960000E - 084500N 0954500E

Offline Star One

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Re: IRNSS-1I, PSLV C41 , FLP, April 12 2018
« Reply #22 on: 04/06/2018 06:22 am »
How do you know that the recent failures are not just coincidental? I think its impossible to know! These could be just random failures. I'm sure ISRO is doing the best job they can. When there are failures, ISRO will learn from them so that the chance of them happening again is greatly reduced.

Good point well made. Disappointed to see such negativity about ISRO expressed by some, perhaps have more faith in their capabilities.

Offline Galactic Penguin SST

Re: IRNSS-1I, PSLV C41 , FLP, April 12 2018
« Reply #23 on: 04/06/2018 03:09 pm »
Launch time is 04:04 local on April 12 = 22:34 UTC on April 11.
Astronomy & spaceflight geek penguin. In a relationship w/ Space Shuttle Discovery.

Offline vineethgk

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Re: IRNSS-1I - PSLV-XL (C41) - April 11, 2018 (22:34 UTC)
« Reply #24 on: 04/06/2018 04:49 pm »
If this launch happens as scheduled on April 12, it would mark the shortest gap between two successive Indian orbital launches yet - 14 days.

Previous record was 18 days by GSLV-F05/PSLV-C35 and GSLV Mk3-D1/PSLV-C38 flights.

http://space.skyrocket.de/doc_lau_fam/pslv.htm

http://space.skyrocket.de/doc_lau/gslv-mk3.htm

Edit: Thanks to Gunter Krebbs!
« Last Edit: 04/06/2018 04:52 pm by vineethgk »

Offline input~2

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Re: IRNSS-1I - PSLV-XL (C41) - April 11, 2018 (22:34 UTC)
« Reply #25 on: 04/09/2018 08:12 am »
BAY OF BENGAL, ANDAMAN SEA, PACIFIC OCEAN (.) CHARTS 32, 41, 356 INT 71 (.)
PSLV LAUNCH SCHEDULED FROM 11 – 19 APR 18 FOR 04 HRS FROM 2145 UTC
2. DANGER ZONE AS FOLLOWS
ZONE -1: CIRCLE OF 10 NM FROM 13-43.9N 080-14.2E
ZONE–2: 13-30N 080-30E, 13-50N 080-35E, 13-35N 081-30E, 13-15N 081-25E
ZONE–3: 13-00N 082-10E, 13-30N 082-15E, 12-55N 084-05E, 12-25N 084-00E
ZONE–4: 12-20N 084-05E, 13-00N 084-15E, 12-45N 085-10E, 12-05N 085-00E
ZONE–5: 11-10N 088-25E, 11-45N 088-35E, 11-25N 089-40E, 10-50N 089-30E
ZONE–6: 09-05N 094-50E, 09-55N 095-05E, 09-35N 096-00E, 08-45N 095-45E
ZONE–7: 19-00S 134-00W, 17-00S 134-00W, 13-00S 112-00W, 07-30S 090-00W,
09-30S 090-00W, 15-00S 112-00W
3. CANCEL THIS MSG 200245 UTC APR 18
« Last Edit: 04/09/2018 07:08 pm by input~2 »

Offline vineethgk

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Re: IRNSS-1I - PSLV-XL (C41) - April 11, 2018 (22:34 UTC)
« Reply #26 on: 04/09/2018 12:12 pm »
Mission brochure is up!

Source

Offline ZachS09

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Re: IRNSS-1I - PSLV-XL (C41) - April 11, 2018 (22:34 UTC)
« Reply #27 on: 04/09/2018 12:58 pm »
Just looked at the mission brochure; the second stage will not use the HTVE-Vac engine (846.8 kilonewtons), but rather the Vikas 2B engine (803.78 kilonewtons).
Liftoff for St. Jude's! Go Dragon, Go Falcon, Godspeed Inspiration4!

Offline vineethgk

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Re: LIVE: IRNSS-1I - PSLV-XL (C41) - April 11, 2018 (22:34 UTC)
« Reply #28 on: 04/10/2018 02:19 am »
Just looked at the mission brochure; the second stage will not use the HTVE-Vac engine (846.8 kilonewtons), but rather the Vikas 2B engine (803.78 kilonewtons).
They may still have a few of the older Vikas-vacs lying around and may make the switch in a later flight.

An alternate possibility is that they do not intend to use the HTVE in PS2 at all, as unlike the case of GSLV MkII/III they haven't explicitly stated that they would use the new engine in a PSLV. But that would mean they would have to keep producing two different versions of Vikas-vacs which would seem like an additional overhead, not to mention the (perhaps remote) possibility of the two getting mixed up in a flight, with catastrophic results.

But I'm guessing its the former.

Offline ZachS09

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Re: LIVE: IRNSS-1I - PSLV-XL (C41) - April 11, 2018 (22:34 UTC)
« Reply #29 on: 04/10/2018 04:40 am »
Well, let's say that ISRO eventually does use the HTVE-Vac in the PSLV. I think the payload capacity will be increased by a couple hundred kilograms in this scenario.
Liftoff for St. Jude's! Go Dragon, Go Falcon, Godspeed Inspiration4!

Offline vineethgk

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Offline vineethgk

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Re: LIVE: IRNSS-1I - PSLV-XL (C41) - April 11, 2018 (22:34 UTC)
« Reply #31 on: 04/10/2018 11:53 am »
Mission gallery has been updated with some rather nice night time shots of the rocket on pad.

Offline vineethgk

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Re: LIVE: IRNSS-1I - PSLV-XL (C41) - April 11, 2018 (22:34 UTC)
« Reply #32 on: 04/10/2018 04:02 pm »
Quote
The 32 hr countdown activity has commenced at 20:04hr IST on Tuesday, April 10, 2018 for the launch of PSLV-C41/IRNSS-1I Mission scheduled at 04:04 hr IST on April 12, 2018
Source

Offline vineethgk

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Re: LIVE: IRNSS-1I - PSLV-XL (C41) - April 11, 2018 (22:34 UTC)
« Reply #33 on: 04/10/2018 05:53 pm »
Quote
On addition of any new safety mechanism in IRNSS-1I to avoid power failure, the chairman said, “Power systems used in GSAT-6A and IRNSS-1I are totally different. The power system being used in IRNSS-1I is very simple and proven as all seven navigation satellites launched earlier are working successfully.”
Source

Online catdlr

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Re: LIVE: IRNSS-1I - PSLV-XL (C41) - April 11, 2018 (22:34 UTC)
« Reply #34 on: 04/11/2018 05:45 am »
India ISRO : Rocket Launch of PSLV-C41/IRNSS-1I Mission


space googlevesaire
Scheduled for Apr 11, 2018



It's Tony De La Rosa, ...I don't create this stuff, I just report it.

Offline worldtimedate

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Re: LIVE: IRNSS-1I - PSLV-XL (C41) - April 11, 2018 (22:34 UTC)
« Reply #35 on: 04/11/2018 06:01 am »
The countdown has started. We are barely 17 hours away for the launch of PSLV C41 - IRNSS-1I Mission.

PSLV C41 - IRNSS-1I Mission Countdown

--- [ --- ]

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Offline ZachS09

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Re: LIVE: IRNSS-1I - PSLV-XL (C41) - April 11, 2018 (22:34 UTC)
« Reply #37 on: 04/11/2018 09:34 pm »
One hour until launch.
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 #38 on: 04/11/2018 09:51 pm »
https://www.isro.gov.in/pslv-c41-irnss-1i/launch-of-pslv-c41-irnss-1i-mission

On ISRO's website, the webcast is technically up, but it's showing static shots of the Mission Control Centre's interior.

Actual coverage will start at 22:00 UTC.
« Last Edit: 04/11/2018 09:51 pm by ZachS09 »
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 #39 on: 04/11/2018 09:57 pm »
Countdown is in progress, obviously.
Liftoff for St. Jude's! Go Dragon, Go Falcon, Godspeed Inspiration4!

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