Author Topic: Delta IV-H - NROL-71 - (19:10 UTC) January 19, 2019  (Read 90089 times)

Offline edkyle99

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Re: Delta IV-H - NROL-71 - (19:10 UTC) January 19, 2019
« Reply #420 on: 02/06/2019 01:02 pm »
To add it appears from that posting to be pretty likely a KH-11 (Block 5).
I'm skeptical.  It's not sun synchronous.  Every single KH-11 that has flown before went to a 97-98 deg sun synchronous orbit.  This one is at 73.6 degrees inclination.  Whatever this is, it has to be able to "see" at night. 

 - Ed Kyle
« Last Edit: 02/06/2019 01:07 pm by edkyle99 »

Offline Star One

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Delta IV-H - NROL-71 - (19:10 UTC) January 19, 2019
« Reply #421 on: 02/06/2019 03:04 pm »
To add it appears from that posting to be pretty likely a KH-11 (Block 5).
I'm skeptical.  It's not sun synchronous.  Every single KH-11 that has flown before went to a 97-98 deg sun synchronous orbit.  This one is at 73.6 degrees inclination.  Whatever this is, it has to be able to "see" at night. 

 - Ed Kyle

As has been discussed previously there are reasons for an electrooptical satellite to be in a non-sun synchronous orbit.
« Last Edit: 02/06/2019 03:05 pm by Star One »

Offline Star One

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Online FutureSpaceTourist

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Re: Delta IV-H - NROL-71 - (19:10 UTC) January 19, 2019
« Reply #423 on: 02/08/2019 12:31 pm »

Offline Lars-J

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Re: Delta IV-H - NROL-71 - (19:10 UTC) January 19, 2019
« Reply #424 on: 02/08/2019 04:52 pm »
Very cool rocketcam video!  8) Some observations/questions:
- booster (or camera) shake at MAX-Q
- dog leg turn at 1:24?
- what is the dark spot that grows on the central booster coupler, starting at 2:54? Ice melting? Paint flaking off?
- ring of ice on the RL-10 nozzle extension  :)
« Last Edit: 02/08/2019 04:53 pm by Lars-J »

Offline ugordan

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Re: Delta IV-H - NROL-71 - (19:10 UTC) January 19, 2019
« Reply #425 on: 02/08/2019 04:59 pm »
- dog leg turn at 1:24?

Probably just a result of wind shear at altitude.

- what is the dark spot that grows on the central booster coupler, starting at 2:54? Ice melting? Paint flaking off?

Most likely due to aeroheating caused by a localized shock-induced hotspot.

Offline Star One

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Offline eeergo

-DaviD-

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Offline Jdeshetler

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Re: Delta IV-H - NROL-71 - (19:10 UTC) January 19, 2019
« Reply #429 on: 03/08/2019 03:23 am »
Multi-views with my remote cameras and onsite audio recorder.


Online catdlr

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Re: Delta IV-H - NROL-71 - (19:10 UTC) January 19, 2019
« Reply #430 on: 03/15/2019 02:10 am »
NROL-71 Liftoff: A Vandenberg Story


National Reconnaissance Office
Published on Mar 14, 2019

On Jan. 19, 2019 at 11:10 a.m. PST, NROL-71 -- carrying a National Reconnaissance Office (NRO) payload -- successfully launched aboard a United Launch Alliance Delta IV Heavy rocket from Space Launch Complex-6, Vandenberg Air Force Base (VAFB), California. This video shares NROL-71's launch journey at VAFB.

https://www.youtube.com/watch?v=Ic_HECE_q4M?t=001

Tony De La Rosa

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