Author Topic: LIVE: Delta IV-M+(5,2) - NROL-47 - Vandenberg - January 12, 2018  (Read 74477 times)

Offline Jdeshetler

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ULA - Delta IV NROL-47 - Shot w/ 4K camera - Highlights

Unlike the previous Delta IV flights, the payload fairing separation occurred before the 1st stage separation.


Offline Targeteer

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and finally cataloged

43145   USA 281   2018-005A US   2018-01-12   AFWTR
Best quote heard during an inspection, "I was unaware that I was the only one who was aware."

Offline Lewis007

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Another NROL-47 patch.
Was the launch mission name "Perseus"?

Offline Steven Pietrobon

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Another NROL-47 patch.
Was the launch mission name "Perseus"?

That probably is the 30th Space Wing code name for the mission.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline input~2

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For the record, these were the maritime restricted zones:

EASTERN NORTH PACIFIC.
1. HAZARDOUS OPERATIONS, ROCKET LAUNCHING
122030Z TO 130126Z JAN, ALTERNATE
2030Z TO 0126Z COMMENCING DAILY
13 THRU 16 JAN IN AREAS BOUND BY:
A. 26-25N 123-12W, 26-46N 124-20W,
27-43N 123-59W, 27-22N 122-50W.
B. 11-38N 128-57W, 11-50N 129-33W,
13-57N 128-51W, 13-46N 128-15W.
2. CANCEL NAVAREA XII 4/18.
3. CANCEL THIS MSG 170226Z JAN 18.//

Authority: WESTERN RANGE 120305Z JAN 18.

Date: 120350Z JAN 18
Cancel: 17022600 Jan 18

SOUTHWESTERN INDIAN OCEAN.
DNC 02, DNC 29.
1. HAZARDOUS OPERATIONS SPACE DEBRIS
122323Z TO 130339Z JAN, ALTERNATE
2323Z TO 0339Z COMMENCING DAILY
13 THRU 16 JAN IN AREA BETWEEN
51-30S 62-00S AND 034-30E 046-12E.
2. CANCEL HYDROPAC 47/18.
3. CANCEL THIS MSG 170439Z JAN 18.//

Authority: WESTERN RANGE 120305Z JAN 18.

Date: 120413Z JAN 18
Cancel: 17043900 Jan 18

Offline FutureSpaceTourist

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Quote
NROL47 post flight. Another bulls eye

https://twitter.com/torybruno/status/958740820596637696

Offline Steven Pietrobon

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That bullseye reads 0% for the centre and 100% for the edge. Shouldn't it be the other way around? 100% for the centre and 0% for the edge? A bullseye is 100% of the requirement?
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Online DaveS

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That bullseye reads 0% for the centre and 100% for the edge. Shouldn't it be the other way around? 100% for the centre and 0% for the edge? A bullseye is 100% of the requirement?
I think the bullseye represent 0% delta from the targets. So the further from the center the dot is, the further away from the target the payload ended up. So you want to be 0% off, IE a bullseye.
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Offline AncientU

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That bullseye reads 0% for the centre and 100% for the edge. Shouldn't it be the other way around? 100% for the centre and 0% for the edge? A bullseye is 100% of the requirement?

If the 'requirement' is stated in deviation from target orbit parameters allowed, then the target makes sense.
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Offline Steven Pietrobon

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I think the bullseye represent 0% delta from the targets. So the further from the center the dot is, the further away from the target the payload ended up. So you want to be 0% off, IE a bullseye.

Thanks! So the label should really read "Percent deviation of requirement".
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline Newton_V

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I think the bullseye represent 0% delta from the targets. So the further from the center the dot is, the further away from the target the payload ended up. So you want to be 0% off, IE a bullseye.

Thanks! So the label should really read "Percent deviation of requirement".

It's the guidance accuracy requirement, not the target orbit requirement.  It's always been clear on the postflight chart that this was taken from.  But you know what happens when management or graphics decides to then go make their own chart, taking bits and pieces from others.....

Offline AncientU

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I think the bullseye represent 0% delta from the targets. So the further from the center the dot is, the further away from the target the payload ended up. So you want to be 0% off, IE a bullseye.

Thanks! So the label should really read "Percent deviation of requirement".

Yes, with 100% being the specification -- maximum deviation allowed for 'successful' insertion.
"If we shared everything [we are working on] people would think we are insane!"
-- SpaceX friend of mlindner

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