Author Topic: LIVE: Orbital ATK Minotaur 4 - ORS-5 - August 25 2017, SLC-46  (Read 61196 times)

Offline Skyrocket

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Any info on the three cubesats?
SN identifies them all in its article on the launch.

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The secondary payloads include two 1.5-unit CubeSats, weighing around 3.3 pounds (1.5 kilograms) each, from Los Alamos National Laboratory. A larger shoebox-sized CubeSat from the Defense Advanced Research Projects Agency, or DARPA, with a weight around 6.6 pounds (3 kilograms) is also hitching a ride.


Not really identified, but some interesting hints. My guesses on these are:
* The 2 LANL 1.5U Cubesats might two more Prometheus-2 cubesats
* The DARPA Cubesat might be PATRIOT.

Offline jcm

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I concur with Gunter's guess on the LANL cubesats.
Note that they will go in the intermediate orbit not the equatorial one.

Here is the only diagram I've seen of the rocket - ATK/USAF via Universe Today at https://www.universetoday.com/136900/threat-tracking-usaf-satellite-launching-nighttime-aug-25-on-cape-debut-of-retired-icbm-minotaur-rocket-watch-live/
But I thought the Orion 38 motors were cylindrical, not spherical, so I don't really have a lot of trust in this..
-----------------------------

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Offline edkyle99

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I concur with Gunter's guess on the LANL cubesats.
Note that they will go in the intermediate orbit not the equatorial one.

Here is the only diagram I've seen of the rocket - ATK/USAF via Universe Today at https://www.universetoday.com/136900/threat-tracking-usaf-satellite-launching-nighttime-aug-25-on-cape-debut-of-retired-icbm-minotaur-rocket-watch-live/
But I thought the Orion 38 motors were cylindrical, not spherical, so I don't really have a lot of trust in this..

Here's a family image from the old Orbital days, I think.  Add another Orion 38, roughly, to make tonight's rocket.

 - Ed Kyle
« Last Edit: 08/25/2017 10:00 PM by edkyle99 »

Offline cscott

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Still rainy and cloudy, but orbital's having a party at the exploration tower. (And SpaceX's Go Searcher and Go Quest are parked over by fish lips, but that's probably unrelated.)
« Last Edit: 08/26/2017 01:05 AM by cscott »

Offline ChrisGebhardt

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Current radar.  General storm movement is to the north.  T-2hrs to the opening of tonight's window.

Offline cscott

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https://spaceflightnow.com/2017/08/25/minotaur-4-ors-5-mission-status-center/
"The countdown is holding at this time, meaning launch will not occur on time at 11:15 p.m. EDT (0315 GMT). The launch window has been shortened slightly, now closing at 3 a.m. EDT (0700 GMT)."
« Last Edit: 08/26/2017 01:26 AM by cscott »

Offline ChrisGebhardt

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Current weather observations as of 21:18 EDT.

Temp: 79 F
Visibility: 10 miles
Clouds:  Few at 2000 ft; Mostly Cloudy at 3500 ft; Overcast at 6500 ft
Winds: SSE at 11kts (13mph)


Offline ChrisGebhardt

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https://spaceflightnow.com/2017/08/25/minotaur-4-ors-5-mission-status-center/
"The countdown is holding at this time, meaning launch will not occur on time at 11:15 p.m. EDT (0315 GMT). The launch window has been shortened slightly, now closing at 3 a.m. EDT (0700 GMT)."


Was just coming to post this as I heard it over the Launch Director loop.

Offline Steven Pietrobon

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Livestream from Florida Today. Starts in 25 minutes.

https://livestream.com/accounts/20522137/events/7675452
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline ChrisGebhardt

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https://spaceflightnow.com/2017/08/25/minotaur-4-ors-5-mission-status-center/
"The countdown is holding at this time, meaning launch will not occur on time at 11:15 p.m. EDT (0315 GMT). The launch window has been shortened slightly, now closing at 3 a.m. EDT (0700 GMT)."


Was just coming to post this as I heard it over the Launch Director loop.

Reason for the hold is the storms in the area.  Launch team is waiting for them to clear out before continuing.

Offline ChrisGebhardt

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Hearing new T0 of 00:15a EDT (04:15 GMT).

Offline ChrisGebhardt

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Hearing new T0 of 00:15a EDT (04:15 GMT).

Confirmed.  T0 is moving target at the moment, but it's NET 00:15 EDT.

Offline ChrisGebhardt

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This is the storm causing the issue.  It's been building for the last several minutes.  Movement is to the north.
« Last Edit: 08/26/2017 01:49 AM by ChrisGebhardt »

Offline Steven Pietrobon

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Florida Today is now waiting for event to go live.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline Steven Pietrobon

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Florida Today has reset their clock. Will go live in 1 hour 27 minutes, or 3:30 am UTC (11:30 pm local).
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline ChrisGebhardt

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Top storm is the old one from previous post.  The one closer to/over the pads is a new, building cell.

Offline russianhalo117

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Per OA's mission page:

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Mission Update - August 25, 2017

We are in a hold due to lightning in the area and we are assessing a new T-0. Minimum delay of one hour.

Offline ChrisGebhardt

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Liftoff now NET 01:00 EDT.

Offline ChrisGebhardt

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Count is at T-2hr 45mins and holding.  So launch is NET 01:20 EDT at this time.

And storm is continuing to lift north with nothing on the radar to the south.
« Last Edit: 08/26/2017 02:35 AM by ChrisGebhardt »

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Live coverage of #MinotaurIV launch will begin as planned at 10:55 p.m. EDT with a weather update. Tune in here: http://www.orbitalatk.com/news-room/feature-stories/MinotaurIV_ORS5_Mission-Page/default.aspx

https://twitter.com/orbitalatk/status/901272566119247872

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