Author Topic: Atlas V 501- AFSPC-05 (X-37B OTV-4) - May 20, 2015 to May 7, 2017 - UPDATES  (Read 114431 times)

Online ZachS09

Re: LIVE: Atlas V 501- AFSPC-05 (X-37B) - May 20, 2015
« Reply #80 on: 05/17/2015 06:30 PM »
Weather forecast attached

Quote
Launch day overall probability of violating weather constraints: 60%
Primary concern(s): Cumulus Clouds, Anvil Clouds, Lightning

24-hour delay overall probability of violating weather constraints: 70%
Primary concern(s): Cumulus Clouds, Anvil Clouds, Lightning

Wow. Looks like there's a small chance of AFSPC-5 launching on time.
"Liftoff of Falcon 9: the world's first reflight of an orbital-class rocket."

Online FutureSpaceTourist

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Re: LIVE: Atlas V 501- AFSPC-05 (X-37B) - May 20, 2015
« Reply #81 on: 05/17/2015 07:40 PM »
Updated forecast issued today. No change to either summary or probability for either day.

Offline mdeep

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Re: LIVE: Atlas V 501- AFSPC-05 (X-37B) - May 20, 2015
« Reply #82 on: 05/17/2015 10:24 PM »
The discussion text makes it sound like the weather at the beginning of the launch window will be better than the overall numbers indicate.
Mike

Offline Galactic Penguin SST

Chinese spaceflight is a cosmic riddle wrapped in a galactic mystery inside an orbital enigma... - (not) Winston Churchill

Offline Steven Pietrobon

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Re: LIVE: Atlas V 501- AFSPC-05 (X-37B) - May 20, 2015
« Reply #84 on: 05/18/2015 05:01 AM »
UltraSat Cubesat update:

* LightSail A (3U)
* USS Langley (3U)
* AeroCube 8A, AeroCube 8B (both 1.5U)
* PSAT A, PSAT B  (both 1.5U)
* BRICsat-P (1.5U)

This leaves 3.5 PPODs (= 10.5U) still unknown

The Press Kit says there are 8 PPODs and 10 cubesats. That implies there are six 3U and four 1.5U cubesats. That leaves four 3U and one 1.5U cubesat unaccounted for. I think one of the 3U cubesats might be the Biarri Risk Mitigation Flight cubesat, but that's only an educated guess.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline ximig

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Re: LIVE: Atlas V 501- AFSPC-05 (X-37B) - May 20, 2015
« Reply #85 on: 05/18/2015 12:51 PM »
I just got one Launch Hazard Area  from http://www.patrick.af.mil/

Anyone have more detail notams?...

Offline fringe_dweller

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Re: LIVE: Atlas V 501- AFSPC-05 (X-37B) - May 20, 2015
« Reply #86 on: 05/18/2015 03:39 PM »
Anyone have more detail notams?...

NAVAREA IV 377/2015 (11,14,26)

WESTERN NORTH ATLANTIC.
ROCKETS.
1. HAZARDOUS OPERATIONS 201505Z TO 201730Z MAY, ALTERNATE 211518Z TO 211744Z MAY IN AREAS BOUND BY:
A. 28-36N 080-36W, 28-43N 080-19W, 28-41N 080-19W, 28-35N 080-26W, 28-34N 080-29W, 28-34N 080-35W.
B. 31-39N 073-56W, 32-18N 072-17W, 32-12N 072-14W, 31-31N 073-53W.
C. 36-17N 059-50W, 36-36N 058-31W, 36-30N 058-28W, 36-10N 059-49W.
2. CANCEL THIS MSG 211844Z MAY 15.

( 150350Z MAY 2015 )

HYDROPAC 1602/2015 (61,75)

SOUTHERN INDIAN OCEAN.
SPACE DEBRIS.
DNC 03.
1. HAZARDOUS OPERATIONS 201735Z TO 201939Z MAY, ALTERNATE 211748Z TO 211953Z MAY IN AREA BOUND BY
49-00S 073-48E, 54-18S 095-42E, 56-24S 094-24E, 51-06S 072-00E.
2. CANCEL THIS MSG 212053Z MAY 15.

( 150318Z MAY 2015 )

Offline zubenelgenubi

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Re: LIVE: Atlas V 501- AFSPC-05 (X-37B) - May 20, 2015
« Reply #87 on: 05/18/2015 09:08 PM »
Ted Molczan has a very informative new post on Seesat-l regarding
X-37B OTV 4 search elements
http://www.satobs.org/seesat/May-2015/0132.html

Some tidbits, paraphrased by me:
He's predicting an optimal launch time at 15:05 UTC (local time is EDT = UTC - 4 hours).

Launch azimuth is 61 degrees (east of north), from which he derives an orbital inclination (assuming no dogleg yaw steering) of 39 degrees.  He points out some yaw steering was performed on the 3 previous X-37B launches.

The Indian Ocean NOTAM appears to be for the Centaur stage (no heliocentric orbit disposal this time), but at a greater orbital inclination, approximately 56 degrees.  This matches information already released about the expected orbital parameters for the secondary payloads.  It appears that the Centaur stage will do some substantial maneuvering after OTV separation to provide this.

Ted M's analysis also assisted Craig Covault in his article at AmericaSpace:
Fourth Atlas-V Spaceplane Launch Heralds X-37B Program Shift As Centaur To Deploy Naval Satellites at Higher Inclination
http://www.americaspace.com/?p=82099

Zubenelgenubi
« Last Edit: 05/18/2015 09:09 PM by zubenelgenubi »
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Offline Star One

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Re: LIVE: Atlas V 501- AFSPC-05 (X-37B) - May 20, 2015
« Reply #88 on: 05/18/2015 09:31 PM »
Do we know for definite yet which of the two vehicles is going up on this launch?

Online FutureSpaceTourist

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Re: LIVE: Atlas V 501- AFSPC-05 (X-37B) - May 20, 2015
« Reply #89 on: 05/18/2015 11:44 PM »
Significant improvement in weather forecast for Wednesday, now 60% go (still only 30% go for Thursday).

Offline Skyrocket

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Re: LIVE: Atlas V 501- AFSPC-05 (X-37B) - May 20, 2015
« Reply #90 on: 05/18/2015 11:56 PM »
concerning the Cubesats:

NRO has posted the Cubesat Passengers on Twitter: https://twitter.com/NatReconOfc/status/600408238438240256

Now we know:

The CubeSats are (by PPODs):

* LightSail-A
* Aercoube 8A & 8B
* GEARRS 2
* PSAT 1, 2 (and BRICSat <not cubesat>)
* USS Langley
* O/C 1
* O/C 2
* O/C 3

« Last Edit: 05/18/2015 11:57 PM by Skyrocket »

Offline jcm

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Re: LIVE: Atlas V 501- AFSPC-05 (X-37B) - May 20, 2015
« Reply #91 on: 05/19/2015 12:47 AM »
concerning the Cubesats:

NRO has posted the Cubesat Passengers on Twitter: https://twitter.com/NatReconOfc/status/600408238438240256

Now we know:

The CubeSats are (by PPODs):

* LightSail-A
* Aercoube 8A & 8B
* GEARRS 2
* PSAT 1, 2 (and BRICSat <not cubesat>)
* USS Langley
* O/C 1
* O/C 2
* O/C 3




ULALaunch posted details on the cubesats

They suggest it's PSAT 1 only, with BRICSAT (no PSAT 2)


http://www.ulalaunch.com/atlas-v-to-launch-afspc5.aspx

-----------------------------

Jonathan McDowell
http://planet4589.org

Offline jcm

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Re: LIVE: Atlas V 501- AFSPC-05 (X-37B) - May 20, 2015
« Reply #92 on: 05/19/2015 12:52 AM »
The OptiCubes (O/C) are very puzzling. Is there any info about them anywhere? Cal Poly, but presumably under
contract to DoD in some form??
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Offline Star One

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Re: LIVE: Atlas V 501- AFSPC-05 (X-37B) - May 20, 2015
« Reply #93 on: 05/19/2015 06:29 AM »
The OptiCubes (O/C) are very puzzling. Is there any info about them anywhere? Cal Poly, but presumably under
contract to DoD in some form??

Wouldn't have thought so as assuming then to be the classified passengers?
« Last Edit: 05/19/2015 06:37 AM by Star One »

Offline Skyrocket

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Re: LIVE: Atlas V 501- AFSPC-05 (X-37B) - May 20, 2015
« Reply #94 on: 05/19/2015 06:33 AM »
concerning the Cubesats:

NRO has posted the Cubesat Passengers on Twitter: https://twitter.com/NatReconOfc/status/600408238438240256

Now we know:

The CubeSats are (by PPODs):

* LightSail-A
* Aercoube 8A & 8B
* GEARRS 2
* PSAT 1, 2 (and BRICSat <not cubesat>)
* USS Langley
* O/C 1
* O/C 2
* O/C 3




ULALaunch posted details on the cubesats

They suggest it's PSAT 1 only, with BRICSAT (no PSAT 2)


http://www.ulalaunch.com/atlas-v-to-launch-afspc5.aspx



This seems to be correct - i had always got the impression, that the two PSATs would be launched together, but apparently this had changed.

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Re: LIVE: Atlas V 501- AFSPC-05 (X-37B) - May 20, 2015
« Reply #95 on: 05/19/2015 12:33 PM »
The weather forecast update issued today attached; no real change from yesterday. Conditions at the start of tomorrow's launch window still looking the most favourable.

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Re: LIVE: Atlas V 501- AFSPC-05 (X-37B) - May 20, 2015
« Reply #96 on: 05/19/2015 01:43 PM »
Atlas V is now rolling to the pad

Online FutureSpaceTourist

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Re: LIVE: Atlas V 501- AFSPC-05 (X-37B) - May 20, 2015
« Reply #97 on: 05/19/2015 01:47 PM »
And now on the pad!

Online ZachS09

Re: LIVE: Atlas V 501- AFSPC-05 (X-37B) - May 20, 2015
« Reply #98 on: 05/19/2015 07:00 PM »
Will the OTV-4 portion of AFSPC-5 stay in space for 800 days or maybe a thousand?
"Liftoff of Falcon 9: the world's first reflight of an orbital-class rocket."

Offline jacqmans

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Re: LIVE: Atlas V 501- AFSPC-05 (X-37B) - May 20, 2015
« Reply #99 on: 05/19/2015 07:31 PM »

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