EVA #3 spacewalkers were Dave Wolf and Christopher Cassidy. EVA #3 was cut short due to high levels of CO2 in Cassidy\’s suit. EVA #3 total time was five hours and fifty-nine minutes.
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| Credits: Orbital |
The Orbiting Carbon Observatory (OCO) failed to reach orbit on February 24, 2009. OCO launched aboard a Taurus XL vehicle from Vandenberg Air Force Base in California.
OCO was to provide global CO2 measurements from space. The data collected during the mission would have helped scientists understand the global carbon cycle. This understanding is essential to improve the predictions of future atmospheric CO2 increases and its impact on the climate.
NASA appointed an investigation board on March 3, 2009. The members of the Mishap Board for the OCO Investigation are: Rick Obenschain, deputy director at NASA’s Goddard Space Flight Center in Greenbelt, Md., head of the investigation board, Jose Caraballo, safety manager at NASA’s Langley Research Center in Hampton, Va., Patricia Jones, acting chief of the Human Systems Integration Division in the Exploration Technology Directorate at NASA’s Ames Research Center at Moffett Field, Calif., Richard Lynch, Aerospace Systems Engineering, Goddard Space Flight Center, Dave Sollberger, deputy chief engineer of the NASA Launch Services Program at NASA’s Kennedy Space Center in Florida.
The official report of the board contains restricted information, so there is a summary of the report available to the public. The summary contains findings and recommendations regarding the OCO mission failure.
Quote from NASA press release:
“The board identified four potential causes that could have resulted in the fairing not separating:
* A failure of the frangible joint subsystem. A frangible joint is an explosive device that provides instantaneous separation of flight vehicle structures while maintaining confinement of explosive debris.
* A failure in the electrical subsystem that prevented sufficient electrical current to initiate the required ordnance devices.
* A failure in the pneumatic system, which supplies pressure to thrusters which separate the fairing.
* A cord snagged on a frangible joint side rail nut plate”.
The scientific community is also making a strong case for reproducing the OCO mission as soon as possible:
“I think a strong case can be made that the [Orbiting Carbon Observatory] should be reproduced as soon as possible. Here we are, on the verge of new international agreements, without thinking about how to monitor them. We are neglecting climate as an element of national security. We’re not getting the information we need. Where are [climate] changes happening, and where are they going to happen?”
-Ralph Cicerone, President of the National Academy of Sciences
Speaking to Congress, 4 March 2009
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| Credits: NASA |
Carnival of Space #112 – The Big Moon Day Show – is hosted by Ken Murphy at Out of the Cradle – Chronicles of the New Space Age.
This week you can listen to a podcast on the Apollo 11 adventure, see stunning images of the Apollo landing sites taken by NASA’s Lunar Reconnaissance Orbiter, read about the Total Solar Eclipse on July 22, 2009, space-based solar power, plans to de-orbit the International Space Station in 2016, orbital debris, and much more.
STS-127 EVA #2 total time was six hours and fifty-three minutes. EVA #2 spacewalkers were Dave Wolf and Tom Marshburn.
STS-127 EVA #1 total time was five hours and thirty-two minutes. STS-127 EVA #1 is the 126th EVA in support of ISS assembly and maintenance. It was the first EVA for Timothy Kopra and the fifth for David Wolf.
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