Author Topic: Orbital's Antares/Cygnus ORB-2 (CRS-2) July 13, 2014  (Read 67834 times)

Offline GClark

  • Full Member
  • ***
  • Posts: 348
  • Liked: 38
  • Likes Given: 5
Re: Orbital's Antares/Cygnus ORB-2 (CRS-2) July 11, 2014
« Reply #40 on: 05/23/2014 12:56 PM »
...shattered pieces of an engine...

We don't know that.  It may not have completely disassembled itself.

V/R,

Offline Norm38

  • Full Member
  • ****
  • Posts: 1129
  • Liked: 501
  • Likes Given: 712
Re: Orbital's Antares/Cygnus ORB-2 (CRS-2) July 11, 2014
« Reply #41 on: 05/23/2014 01:38 PM »
They should also have a full set of telemetry data from the test leading up to the moment of failure.  The engine hardware itself isn't all they have to work with.

Offline LouScheffer

  • Full Member
  • ****
  • Posts: 1866
  • Liked: 2420
  • Likes Given: 268
Re: Orbital's Antares/Cygnus ORB-2 (CRS-2) July 11, 2014
« Reply #42 on: 05/23/2014 02:05 PM »
Given how close it is to June 10 I'm guessing that the engine that RUDed was intended for a later Antares, not this flight. So if they determine the cause quickly and clear CRS-2's engine of the same defect they may not have to delay at all.

18 days to discover the root cause from shattered pieces of an engine and be convinced there's no chance they got it wrong, plus do whatever inspections are necessary to clear the CRS-2 engine and approve it for flight?  That seems awfully optimistic.


The last time this happened, it took about 3.5 months to figure out the cause, then plan and implement the better inspections.

[...] a fourth engine suffered a failure during a June 9, 2011 static test at Stennis Space Center's E-1 test stand.  The engine caught fire during the aborted test because of a kerosene fuel leak from an engine manifold.[...]  The replacement engine was successfully hot-fire tested on September 28, 2011 after improved inspection protocols had been implemented.

Offline edkyle99

  • Expert
  • Senior Member
  • *****
  • Posts: 12811
    • Space Launch Report
  • Liked: 3794
  • Likes Given: 741
Re: Orbital's Antares/Cygnus ORB-2 (CRS-2) July 11, 2014
« Reply #43 on: 05/28/2014 01:44 PM »
"Mission Update - May 28, 2014

Orbital has rescheduled the launch of its Antares rocket for the Orb-2 mission to a date of no earlier than (NET) June 17, 2014. Orb-2 is the second of eight cargo resupply missions to the International Space Station under Orbital’s Commercial Resupply Services (CRS) contract with NASA. The new launch schedule has been established to allow the engineering teams from the main stage propulsion supplier Aerojet Rocketdyne and Orbital to investigate the causes of an AJ26 engine failure that occurred last week at NASA’s Stennis Space Center during customary acceptance testing. That engine was designated for use in a mission slated for 2015 and was undergoing hot fire testing that all Antares AJ26 engines are subject to in order to ensure nominal performance and acceptance for use in Antares missions. The NET June 17 is a planning date. The determination of a new firm date will depend on progress of the investigation team, so please check back to this page for further updates."

http://www.orbital.com/NewsInfo/MissionUpdates/Orb-2/
« Last Edit: 05/28/2014 01:48 PM by edkyle99 »

Offline Chris Bergin

Per L2, looking at June 20.

Offline Alpha Control

  • Veteran
  • Full Member
  • ****
  • Posts: 1193
  • Washington, DC
  • Liked: 132
  • Likes Given: 74
Re: Orbital's Antares/Cygnus ORB-2 (CRS-2) July 11, 2014
« Reply #45 on: 06/06/2014 03:34 AM »
Does anyone have an EDT launch time for June 20th?
Space launches attended:
Antares/Cygnus ORB-D1 Wallops Island, VA Sept 2013 | STS-123 KSC, FL March 2008 | SpaceShipOne Mojave, CA June 2004

Offline Lee Jay

  • Elite Veteran
  • Global Moderator
  • Senior Member
  • *****
  • Posts: 6673
  • Liked: 980
  • Likes Given: 139
Re: Orbital's Antares/Cygnus ORB-2 (CRS-2) July 11, 2014
« Reply #46 on: 06/06/2014 03:55 AM »
Does anyone have an EDT launch time for June 20th?

Don't know, but it seems to be in plane in the neighborhood of 10pm.

Offline kirghizstan

  • Full Member
  • ****
  • Posts: 664
  • Liked: 139
  • Likes Given: 74
Re: Orbital's Antares/Cygnus ORB-2 (CRS-2) July 11, 2014
« Reply #47 on: 06/07/2014 11:03 AM »
Does anyone have a graphic of where you will be able to see this from. I'm going to Maryland that week but I can't drive 3.5 hours there with 4 & 1 year olds. Hoping the graphic might say we will be able to see the accent from our location. Thanks

Offline mvpel

  • Full Member
  • ****
  • Posts: 1124
  • New Hampshire
  • Liked: 1295
  • Likes Given: 1686
Re: Orbital's Antares/Cygnus ORB-2 (CRS-2) July 11, 2014
« Reply #48 on: 06/07/2014 01:34 PM »
Does anyone have a graphic of where you will be able to see this from. I'm going to Maryland that week but I can't drive 3.5 hours there with 4 & 1 year olds. Hoping the graphic might say we will be able to see the accent from our location. Thanks

Enjoy!

"Ugly programs are like ugly suspension bridges: they're much more liable to collapse than pretty ones, because the way humans (especially engineer-humans) perceive beauty is intimately related to our ability to process and understand complexity. A language that makes it hard to write elegant code makes it hard to write good code." - Eric S. Raymond

Offline srepetsk

  • Member
  • Posts: 70
  • Liked: 33
  • Likes Given: 52
Re: Orbital's Antares/Cygnus ORB-2 (CRS-2) July 11, 2014
« Reply #49 on: 06/09/2014 02:44 PM »
Doesn't look like this has already been posted...

https://twitter.com/OrbitalSciences/status/476011220235874305
< OrbitalSciences> We updated our #Orb2 CRS mission schedule from @NASA_Wallops to no earlier than July 1. See #Antares launch update: http://t.co/9TG3pspghV <orbital.com/NewsInfo/Missi?>

Offline Galactic Penguin SST

From OSC:

Mission Update - June 9, 2014

Orbital has updated its Antares launch schedule for the Orb-2 mission to a date no earlier than (NET) July 1, 2014. Orb-2 is the second of eight cargo resupply missions to the International Space Station (ISS) under the company’s Commercial Resupply Services (CRS) contract with NASA. The new launch schedule reflects the timing of the investigation into the cause of an AJ26 engine failure that occurred in late May at NASA’s Stennis Space Center during customary acceptance testing. All other elements of the Orb-2 mission are prepared to move forward, including the Cygnus spacecraft, which is fueled and, except for late-load cargo, is packed with its manifest of ISS cargo.

The engine that failed was designated for use in a 2015 CRS mission and was undergoing hot fire testing that all Antares AJ26 engines are subject to in order to ensure nominal performance and acceptance for use in Antares missions. The investigation into the failure is being led by the Antares main stage propulsion supplier, Aerojet Rocketdyne, with Orbital and NASA engineers also supporting the effort. Once the investigation team reaches the point in their process that they can clear Antares to launch the Orb-2 mission, a targeted launch date will be established. For now, NET July 1 is simply a planning date. Please check back to this page for further updates.
Chinese spaceflight is a cosmic riddle wrapped in a galactic mystery inside an orbital enigma... - (not) Winston Churchill

Offline Chris Bergin


Offline Chris Bergin

Another delay.

NET July 10 at 2:02pm Eastern   

Offline pericynthion

  • GNC / Comms Engineer
  • Full Member
  • **
  • Posts: 289
  • Liked: 425
  • Likes Given: 167
Re: Orbital's Antares/Cygnus ORB-2 (CRS-2) July 11, 2014
« Reply #53 on: 06/23/2014 04:26 PM »
Thanks Chris!

Offline Artyom.

NASA Wallops ‏@NASA_Wallops
@OrbitalSciences is targeting NET July 10 for its next ISS resupply mission from Wallops/MARS Pad 0A. 2:20:51 p.m. EDT scheduled lift-off.
"Earth is the cradle of humanity, but one cannot live in a cradle forever." - Konstantin Eduardovich Tsiolkovsky.

Offline psloss

  • Veteran armchair spectator
  • Senior Member
  • *****
  • Posts: 17302
  • Liked: 1774
  • Likes Given: 1014
Re: Orbital's Antares/Cygnus ORB-2 (CRS-2) July 11, 2014
« Reply #55 on: 06/23/2014 04:58 PM »
A little elaboration on Orbital's mission update page:
http://www.orbital.com/NewsInfo/MissionUpdates/Orb-2/

Quote
Mission Update – June 23, 2014

Orbital has updated its launch schedule for the Orb-2 mission to a date no earlier than July 10, 2014. Orb-2 is the second of eight cargo resupply missions to the International Space Station (ISS) under the company’s Commercial Resupply Services (CRS) contract with NASA. The new launch schedule reflects progress in the investigation into the cause of an AJ26 engine test failure and identification of specific actions to clear the Orb-2 mission for flight.

The Antares team will inspect the AJ26 engines installed on the Orb-2 rocket this week, and a decision to proceed toward launch will be based on the results of the inspections. All other elements of the Orb-2 mission are prepared to move forward, including the Cygnus spacecraft, which is fueled and, except for late-load cargo, is packed with its manifest of ISS cargo.

Offline Galactic Penguin SST

There goes that day - next Arianespace Soyuz launch is just 30 minutes after Cygnus launches (18:55 UTC vs 18:20 UTC).....   ;)
Chinese spaceflight is a cosmic riddle wrapped in a galactic mystery inside an orbital enigma... - (not) Winston Churchill

Offline Prober

  • Senior Member
  • *****
  • Posts: 10313
  • Save the spin....I'm keeping you honest!
  • Nevada
  • Liked: 701
  • Likes Given: 728
Re: Orbital's Antares/Cygnus ORB-2 (CRS-2) July 11, 2014
« Reply #57 on: 06/23/2014 05:06 PM »
There goes that day - next Arianespace Soyuz launch is just 30 minutes after Cygnus launches (18:55 UTC vs 18:20 UTC).....   ;)

Beats the 1st of July, now we can watch the Delta II  ;)
2017 - Everything Old is New Again.
I have not failed. I've just found 10,000 ways that won't work. ~ by Thomas Alva Edison

Offline psloss

  • Veteran armchair spectator
  • Senior Member
  • *****
  • Posts: 17302
  • Liked: 1774
  • Likes Given: 1014
Re: Orbital's Antares/Cygnus ORB-2 (CRS-2) July 11, 2014
« Reply #58 on: 06/23/2014 05:19 PM »
There goes that day - next Arianespace Soyuz launch is just 30 minutes after Cygnus launches (18:55 UTC vs 18:20 UTC).....   ;)
Still an emphasis on the No-Earlier-Than and they still have more work to do.

Online jacqmans

  • Moderator
  • Global Moderator
  • Senior Member
  • *****
  • Posts: 17524
  • Houten, The Netherlands
  • Liked: 3187
  • Likes Given: 192
Re: Orbital's Antares/Cygnus ORB-2 (CRS-2) July 11, 2014
« Reply #59 on: 06/25/2014 12:52 PM »
The mission patch

Tags: