Author Topic: Delta IV-H - NROL-71 - January 19, 2019  (Read 81328 times)

Online jacqmans

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December 19, ULA photos

Online jacqmans

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Online Jdeshetler

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Check out the unusual clear views shot from hill above SpaceX pad before the Delta Heavy NROL-71 was scrubbed last night.

Offline Galactic Penguin SST

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Online TGMetsFan98

Re: Delta IV-H - NROL-71 - NET December 30, 2018
« Reply #244 on: 12/26/2018 08:22 pm »
If anyone knows a T-0 for a potential Sunday attempt, please do share!
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Offline Ted Molczan

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Re: Delta IV-H - NROL-71 - NET December 30, 2018
« Reply #245 on: 12/26/2018 09:34 pm »
If anyone knows a T-0 for a potential Sunday attempt, please do share!

To-date the publicly released launch time has moved earlier at the mean rate of 12.9 min/d. On that basis, launch would be near 2018 Dec 30 15:22 PST (23:22 UTC).

Ted Molczan

Online Chris Bergin

Re: Delta IV-H - NROL-71 - NET Jan 6, 2019
« Reply #246 on: 12/28/2018 03:20 pm »
NET Jan 6:

 The United Launch Alliance Delta IV Heavy carrying the NROL-71 mission will launch no earlier than Sunday, Jan. 6, 2019

https://twitter.com/ulalaunch/status/1078686393755467777

Offline TJL

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Re: Delta IV-H - NROL-71 - NET Jan 6, 2019
« Reply #247 on: 12/28/2018 03:47 pm »
NET Jan 6:

 The United Launch Alliance Delta IV Heavy carrying the NROL-71 mission will launch no earlier than Sunday, Jan. 6, 2019

https://twitter.com/ulalaunch/status/1078686393755467777
Too bad...once again there will not be two Delta IV Heavy launches in the same calendar year.

Offline Newton_V

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Re: Delta IV-H - NROL-71 - NET Jan 6, 2019
« Reply #248 on: 12/28/2018 04:26 pm »
Too bad...once again there will not be two Delta IV Heavy launches in the same calendar year.
Possible if you use Chinese calendar.
Anyways, I just don't see this launching before F9, unless F9 slips quite a few days.
« Last Edit: 12/28/2018 04:31 pm by Newton_V »

Offline zubenelgenubi

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Re: Delta IV-H - NROL-71 - NET Jan 6, 2019
« Reply #249 on: 12/28/2018 05:42 pm »
To-date the publicly released launch time has moved earlier at the mean rate of 12.9 min/d.<snip>
Ted Molczan

Dec. 30 + 7 days = Jan. 6 (NET date)

7 days x 12.9 min/day = (rounded) 90 min

Previous launch time - interval minutes = approx. launch time on new date

23:22 - 0:90 = 21:52 (UTC)

(Progression works with original launch UTC dates/times on Dec. 8, Dec. 9, Dec. 19, Dec. 20, Dec. 30.)

21:52 UTC = 13:52 PST
« Last Edit: 12/28/2018 05:46 pm by zubenelgenubi »
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Offline Llian Rhydderch

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Re: Delta IV-H - NROL-71 - NET Jan 6, 2019
« Reply #250 on: 12/29/2018 03:53 am »
Too bad...once again there will not be two Delta IV Heavy launches in the same calendar year.
Possible if you use Chinese calendar.
Anyways, I just don't see this launching before F9, unless F9 slips quite a few days.

It doesn't really matter what the delays are here.  It's not like there has been much demand for use of the Delta IV launch pad; only five launches scheduled for the one monopsony DIV customer over the the next five years, out to 2023. 

It is quite the opposite with the competition for pad use from the new entrant(s) into the space launch market.

Great graph in this article showing that phenomenon over the past few years.  The Boeing/LockMart, Proton, and "other" are all losing share; Ariane is holding about even. 
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Offline Newton_V

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Re: Delta IV-H - NROL-71 - NET Jan 6, 2019
« Reply #251 on: 12/29/2018 01:27 pm »
Too bad...once again there will not be two Delta IV Heavy launches in the same calendar year.
Possible if you use Chinese calendar.
Anyways, I just don't see this launching before F9, unless F9 slips quite a few days.

It doesn't really matter what the delays are here.  It's not like there has been much demand for use of the Delta IV launch pad; only five launches scheduled for the one monopsony DIV customer over the the next five years, out to 2023. 

It is quite the opposite with the competition for pad use from the new entrant(s) into the space launch market.

Great graph in this article showing that phenomenon over the past few years.  The Boeing/LockMart, Proton, and "other" are all losing share; Ariane is holding about even.
What's the point you are trying to make regarding L-71?  We already know the demand for heavy lift launch from WR is about 1 launch every 2 to 3 years.  Even though another LV now exists, it still can't meet the mission requirements (not talking about weight to orbit).
« Last Edit: 12/29/2018 01:30 pm by Newton_V »

Offline zubenelgenubi

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Re: Delta IV-H - NROL-71 - NET Jan ? 2019
« Reply #252 on: 01/01/2019 04:24 pm »
Cross-post:
https://twitter.com/MXSOCAL/status/1079806167071612929
Quote
Latest information from #Vandenberg regarding the #DeltaIV-  the rocket continues to have issues and the launch schedule is now indefinite.  They expect to have an update next week.
« Last Edit: 01/01/2019 04:29 pm by zubenelgenubi »
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Online Jdeshetler

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Re: Delta IV-H - NROL-71 - NET Jan 6, 2019
« Reply #253 on: 01/02/2019 04:18 pm »
ULA - Delta Heavy - NROL 71 - Pre Launch - Timelapse 720

Very windy the day before the latest scrubbed due to leaking hydrogen.


Online Chris Bergin

Re: Delta IV-H - NROL-71 - NET Jan 6, 2019
« Reply #254 on: 01/03/2019 03:43 pm »
Tanking test today, per L2.

Online ZachS09

Re: Delta IV-H - NROL-71 - NET Jan 6, 2019
« Reply #255 on: 01/03/2019 04:13 pm »
Quick question: why does the thread title list the launch data as January 6th?

Wasn't it indefinitely delayed a while ago?
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Online gongora

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Re: Delta IV-H - NROL-71 - NET Jan 6, 2019
« Reply #256 on: 01/03/2019 04:21 pm »
Quick question: why does the thread title list the launch data as January 6th?

Wasn't it indefinitely delayed a while ago?

The thread says "NET" Jan. 6, which technically is still true, although not for much longer.  I guess I can just change it to NET January.

Offline Newton_V

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Re: Delta IV-H - NROL-71 - NET Jan 6, 2019
« Reply #257 on: 01/03/2019 04:57 pm »
Quick question: why does the thread title list the launch data as January 6th?

Wasn't it indefinitely delayed a while ago?

The thread says "NET" Jan. 6, which technically is still true, although not for much longer.  I guess I can just change it to NET January.
The launch date has been on hold, so to speak, since 19 December.  Some of these changing NET dates are just placeholders until this test today could be scheduled.  Because of the holidays, etc. it was difficult to nail down a test date.  And with the SpX hot fire and launch, the NET ILC is now the 11th.   If all goes well today, I expect that date to be good.  We shall see.


Offline zubenelgenubi

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Re: Delta IV-H - NROL-71 - NET January 11, 2019
« Reply #259 on: 01/04/2019 09:14 pm »
<snip> And with the SpX hot fire and launch, the NET ILC is now the 11th. <snip>

ILC = Initial Launch Capability
« Last Edit: 01/04/2019 09:17 pm by zubenelgenubi »
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