Author Topic: Delta IV-H - NROL-71 - (19:10 UTC) January 19, 2019  (Read 90058 times)

Online Opie

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Re: Delta IV-H - NROL-71 - January 19, 2019
« Reply #400 on: 01/22/2019 11:34 am »
Yes. Excess hydrogen on startup ignites and causes the plume. The black smoke is from the foam insulation burning from the plume.

Online ZachS09

Re: Delta IV-H - NROL-71 - January 19, 2019
« Reply #401 on: 01/22/2019 01:17 pm »
This blackening of the insulation is actually more frequent in Vandenberg as opposed to Cape Canaveral launches.

For example, during the EFT-1 mission, all three booster cores looked nearly 100% clean after ignition.

My reasoning for the blackening during this launch and all other Vandenberg launches is because there’s not that much moisture in the air and the elevation is slightly higher.
« Last Edit: 01/22/2019 01:18 pm by ZachS09 »
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Offline IanO

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Re: Delta IV-H - NROL-71 - January 19, 2019
« Reply #402 on: 01/22/2019 03:36 pm »
Three additional NROL-71 patches
...
patches NROL-71 (2).jpg   (Don't Blink)
...
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Offline Kansan52

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Re: Delta IV-H - NROL-71 - January 19, 2019
« Reply #403 on: 01/22/2019 03:47 pm »
Me neither!!

Offline Kansan52

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Re: Delta IV-H - NROL-71 - January 19, 2019
« Reply #404 on: 01/22/2019 03:52 pm »
Is there an image of the "We Don't Blink" patch that can be shared on Facebook?

Offline russianhalo117

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Re: Delta IV-H - NROL-71 - January 19, 2019
« Reply #405 on: 01/22/2019 10:06 pm »
This blackening of the insulation is actually more frequent in Vandenberg as opposed to Cape Canaveral launches.

For example, during the EFT-1 mission, all three booster cores looked nearly 100% clean after ignition.

My reasoning for the blackening during this launch and all other Vandenberg launches is because there’s not that much moisture in the air and the elevation is slightly higher.
The pads have a few differences that have some influence.

Offline TJL

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Re: Delta IV-H - NROL-71 - January 19, 2019
« Reply #406 on: 01/22/2019 11:03 pm »
If I remember correctly the Delta IV Heavy that launched NROL 49 from VAFB on Jan. 20, 2011 had the most insulation burn. Actually looked like the boosters were on fire long after it cleared the tower.


Online DaveS

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Re: Delta IV-H - NROL-71 - January 19, 2019
« Reply #407 on: 01/23/2019 12:58 am »
If I remember correctly the Delta IV Heavy that launched NROL 49 from VAFB on Jan. 20, 2011 had the most insulation burn. Actually looked like the boosters were on fire long after it cleared the tower.


I doin't know, I still think the very first DIVH still is the leader with near complete charring of all three CBC LH2 tanks: https://spaceflightnow.com/delta/d310/041221launch/02.html
https://spaceflightnow.com/delta/d310/041221launch/07.html
« Last Edit: 01/23/2019 12:59 am by DaveS »
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Offline TJL

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Re: Delta IV-H - NROL-71 - January 19, 2019
« Reply #408 on: 01/23/2019 11:46 pm »
If I remember correctly the Delta IV Heavy that launched NROL 49 from VAFB on Jan. 20, 2011 had the most insulation burn. Actually looked like the boosters were on fire long after it cleared the tower.


I doin't know, I still think the very first DIVH still is the leader with near complete charring of all three CBC LH2 tanks: https://spaceflightnow.com/delta/d310/041221launch/02.html
https://spaceflightnow.com/delta/d310/041221launch/07.html
You may be right, Dave.

Offline Norm38

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Re: Delta IV-H - NROL-71 - (19:10 UTC) January 19, 2019
« Reply #409 on: 01/28/2019 07:46 pm »
With all the delays I lost sight of this one and just watched the launch video today.  I don't recall ever getting ride-along camera views from the Delta IV Heavy before.  Was nice to get to see booster sep and staging.  Were those cameras new?  Or they just hadn't televised them before?

Offline Targeteer

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Re: Delta IV-H - NROL-71 - (19:10 UTC) January 19, 2019
« Reply #410 on: 01/28/2019 10:16 pm »
Still hasn't been seen but it's been heard enough to generate update search elements...

http://www.satobs.org/seesat/Jan-2019/0126.html
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Offline MATTBLAK

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Re: Delta IV-H - NROL-71 - (19:10 UTC) January 19, 2019
« Reply #411 on: 01/28/2019 10:45 pm »
Anyone know how many Delta IV-H launches there are left before the Vulcan launcher has it's debut? I imagine the D4-H would be retired around about then?
« Last Edit: 01/28/2019 10:46 pm by MATTBLAK »
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Offline Newton_V

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Re: Delta IV-H - NROL-71 - (19:10 UTC) January 19, 2019
« Reply #412 on: 01/28/2019 11:14 pm »
With all the delays I lost sight of this one and just watched the launch video today.  I don't recall ever getting ride-along camera views from the Delta IV Heavy before.  Was nice to get to see booster sep and staging.  Were those cameras new?  Or they just hadn't televised them before?
Both.  Relatively new, and just not televised before.

Offline Newton_V

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Re: Delta IV-H - NROL-71 - (19:10 UTC) January 19, 2019
« Reply #413 on: 01/28/2019 11:16 pm »
Anyone know how many Delta IV-H launches there are left before the Vulcan launcher has it's debut? I imagine the D4-H would be retired around about then?
They will overlap with Vulcan.  How many are left, is still possibly TBD.

Offline eeergo

Re: Delta IV-H - NROL-71 - (19:10 UTC) January 19, 2019
« Reply #414 on: 01/29/2019 12:58 am »
With all the delays I lost sight of this one and just watched the launch video today.  I don't recall ever getting ride-along camera views from the Delta IV Heavy before.  Was nice to get to see booster sep and staging.  Were those cameras new?  Or they just hadn't televised them before?
Both.  Relatively new, and just not televised before.

They were used already in the first few flights of DIV-H, weren't they? I thought most of the flights featured them but only some select major ones were broadcast.

-DaviD-

Offline Newton_V

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Re: Delta IV-H - NROL-71 - (19:10 UTC) January 19, 2019
« Reply #415 on: 01/29/2019 02:50 am »
Yeah, I was thinking of the suite that's now common on Atlas and Delta.

Online ZachS09

Re: Delta IV-H - NROL-71 - (19:10 UTC) January 19, 2019
« Reply #416 on: 01/29/2019 04:46 am »
eeergo, to my knowledge, Delta IV Heavy rocketcams were used on five missions:

- The demo flight carrying a dummy payload and two microsats (12/21/2004)

- DSP 23 (11/11/2007)

- EFT-1 (12/5/2014)

- Parker Solar Probe (8/12/2018)

- NROL-71 (01/19/2019)
« Last Edit: 01/29/2019 04:47 am by ZachS09 »
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Offline Targeteer

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Re: Delta IV-H - NROL-71 - (19:10 UTC) January 19, 2019
« Reply #417 on: 02/02/2019 04:51 pm »
Finally seen by the amateur observer network    392 X 418km

http://www.satobs.org/seesat/Feb-2019/0003.html

I don't get a chance until Feb 10

https://www.heavens-above.com/PassSummary.aspx?satid=43941&
« Last Edit: 02/02/2019 05:13 pm by Targeteer »
Best quote heard during an inspection, "I was unaware that I was the only one who was aware."

Offline Star One

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Delta IV-H - NROL-71 - (19:10 UTC) January 19, 2019
« Reply #418 on: 02/02/2019 07:25 pm »
Finally seen by the amateur observer network    392 X 418km

http://www.satobs.org/seesat/Feb-2019/0003.html

I don't get a chance until Feb 10

https://www.heavens-above.com/PassSummary.aspx?satid=43941&

To add it appears from that posting to be pretty likely a KH-11 (Block 5).
« Last Edit: 02/02/2019 07:28 pm by Star One »

Offline Star One

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Re: Delta IV-H - NROL-71 - (19:10 UTC) January 19, 2019
« Reply #419 on: 02/06/2019 06:47 am »
Updated elements for USA 290.

http://www.satobs.org/seesat/Feb-2019/0011.html

http://www.satobs.org/seesat/Feb-2019/0014.html

Mr Molczan states more commentary to come soon.

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