An expected engine burn on board the Soyuz capsule taking three astronauts to ISS did not take place as scheduled, forcing at minimum a two day delay in the rendezvous and docking.
An expected engine burn on board the Soyuz capsule taking three astronauts to ISS did not take place as scheduled, forcing at minimum a two day delay in the rendezvous and docking.
[NASA spokesman Rob] Navias said the engine burn was aborted due to a problem with the Soyuz’s attitude control system, but further details were not immediately available. “Right now we don’t understand exactly what happened,” a mission manager at Russian Mission Control told the Soyuz crew late Thursday. Ground controllers planned to download data from the Soyuz and determine whether the glitch was due to a hardware or software problem. [emphasis mine]
Though the astronauts are not in any immediate danger, this is very worrisome. Indications from various other news stories suggest the problem was software related, which in a sense is a good thing. They would still have the option to manually fire their engines to do a manual rendezvous and docking. However, if it isn’t a software issue, and the vagueness of the reports so far makes me wonder about this, they might instead be stranded. Let us hope not.
Update: This report gives a little more information. It appears the capsule itself was not in the right orientation at burn time, and the computer software, sensing this, canceled the burn. If so, the problem might be software (incorrectly gauging the position of the spacecraft) or mechanical (something failing so that the capsule is not oriented correctly). Engineers need to find out which.
On Christmas Eve 1968 three Americans became the first humans to visit another world. What they did to celebrate was unexpected and profound, and will be remembered throughout all human history. Genesis: the Story of Apollo 8, Robert Zimmerman's classic history of humanity's first journey to another world, tells that story, and it is now available as both an ebook and an audiobook, both with a foreword by Valerie Anders and a new introduction by Robert Zimmerman.
The print edition can be purchased at Amazon. from any other book seller, or direct from my ebook publisher, ebookit.
The ebook is available everywhere for $5.99 (before discount) at amazon, or direct from my ebook publisher, ebookit. If you buy it from ebookit you don't support the big tech companies and the author gets a bigger cut much sooner.
The audiobook is also available at all these vendors, and is also free with a 30-day trial membership to Audible.
"Not simply about one mission, [Genesis] is also the history of America's quest for the moon... Zimmerman has done a masterful job of tying disparate events together into a solid account of one of America's greatest human triumphs."--San Antonio Express-News
An expected engine burn on board the Soyuz capsule taking three astronauts to ISS did not take place as scheduled, forcing at minimum a two day delay in the rendezvous and docking.
[NASA spokesman Rob] Navias said the engine burn was aborted due to a problem with the Soyuz’s attitude control system, but further details were not immediately available. “Right now we don’t understand exactly what happened,” a mission manager at Russian Mission Control told the Soyuz crew late Thursday. Ground controllers planned to download data from the Soyuz and determine whether the glitch was due to a hardware or software problem. [emphasis mine]
Though the astronauts are not in any immediate danger, this is very worrisome. Indications from various other news stories suggest the problem was software related, which in a sense is a good thing. They would still have the option to manually fire their engines to do a manual rendezvous and docking. However, if it isn’t a software issue, and the vagueness of the reports so far makes me wonder about this, they might instead be stranded. Let us hope not.
Update: This report gives a little more information. It appears the capsule itself was not in the right orientation at burn time, and the computer software, sensing this, canceled the burn. If so, the problem might be software (incorrectly gauging the position of the spacecraft) or mechanical (something failing so that the capsule is not oriented correctly). Engineers need to find out which.
On Christmas Eve 1968 three Americans became the first humans to visit another world. What they did to celebrate was unexpected and profound, and will be remembered throughout all human history. Genesis: the Story of Apollo 8, Robert Zimmerman's classic history of humanity's first journey to another world, tells that story, and it is now available as both an ebook and an audiobook, both with a foreword by Valerie Anders and a new introduction by Robert Zimmerman.
The print edition can be purchased at Amazon. from any other book seller, or direct from my ebook publisher, ebookit. The ebook is available everywhere for $5.99 (before discount) at amazon, or direct from my ebook publisher, ebookit. If you buy it from ebookit you don't support the big tech companies and the author gets a bigger cut much sooner.
The audiobook is also available at all these vendors, and is also free with a 30-day trial membership to Audible.
"Not simply about one mission, [Genesis] is also the history of America's quest for the moon... Zimmerman has done a masterful job of tying disparate events together into a solid account of one of America's greatest human triumphs."--San Antonio Express-News
Scary and two days in one of those must be unpleasant.
Soyuz was designed for multi-week long missions. The descent capsule is cramped and tiny. The Orbital module on top has more room, and just having two rooms helps. Someone at the controls, and two others in the Orbital module can make things much more bearable.