I hope they allowed you to keep the shoes!
Attached is a picture of a group of my colleagues and myself at OSC's Dulles facility, posing in front of the OCO flight article.
As somebody said earlier, still a lot of bones in the herringbone.
Quote from: antonioe on 02/24/2009 02:44 pmAs somebody said earlier, still a lot of bones in the herringbone.I'm just wondering how long it might be before we hear if the pruning of the fault tree is going swiftly or not.
I've laid eyes on a draft copy of the OSC Mishap Investigation Board's report. After a quite extensive effort involving lab tests and telemetry analysis, the team has reached some conclusions. It is believed that the fairing separation failure was caused by a failure in the Hot Gas Generator mechanism. The HGG is a pyro-activated device which generates the pressure to actuate pistons which set the fairing in motion. Analysis indicates that mechanical shocks from earlier pyro events which start the fairing jettison process caused the HGG's pyros to malfunction. The two initiators did not do their job of "starting a fire" in the HGG, hence no pressure was built up to drive the pistons.Recommended corrective actions include changing from a hot-gas system to a cold-gas system. If the HGG is retained, it is recommended that the shock environment be reduced somehow, along with modification to the initiators to preclude the potential for shock damage. There are other recommendations, but those are the key ones.No word yet on what solution will be chosen, nor how this will impact preparations for the T9/Glory mission.
It is believed that the fairing separation failure was caused by a failure in the Hot Gas Generator mechanism. The HGG is a pyro-activated device which generates the pressure to actuate pistons which set the fairing in motion. Analysis indicates that mechanical shocks from earlier pyro events which start the fairing jettison process caused the HGG's pyros to malfunction. The two initiators did not do their job of "starting a fire" in the HGG, hence no pressure was built up to drive the pistons.Recommended corrective actions include changing from a hot-gas system to a cold-gas system. (snip)
Bump due to the actual cause of the launch failure being found almost 4 years after the accident: http://www.aviationweek.com/Blogs.aspx?plckController=Blog&plckScript=blogScript&plckElementId=blogDest&plckBlogPage=BlogViewPost&plckPostId=Blog%3a04ce340e-4b63-4d23-9695-d49ab661f385Post%3abcb6c326-46f0-44ef-a0ea-334de6a1e090
Quote from: Galactic Penguin SST on 11/20/2012 11:17 amBump due to the actual cause of the launch failure being found almost 4 years after the accident: http://www.aviationweek.com/Blogs.aspx?plckController=Blog&plckScript=blogScript&plckElementId=blogDest&plckBlogPage=BlogViewPost&plckPostId=Blog%3a04ce340e-4b63-4d23-9695-d49ab661f385Post%3abcb6c326-46f0-44ef-a0ea-334de6a1e090Does anyone have an illustration or photograph of the part being discussed?