Technical Services Division (TSD) Involvement with Shuttle Columbia, Mission STS-107 http://www.orbital.com
The MEIDEX (Mediterranean Israeli Dust Experiment) project began in late 1999 for Tel-Aviv University. Tel-Aviv supplied TSD with a special Radiometric camera, which is like a video camera with a spinning filter wheel to measure reflected light intensity at different wavelengths from aerosols (dust particles). The data is correlated with ground based and airborne observations. The experiment is aimed at dust storms that come off the Sahara desert. As secondary science MEIDEX was to obtain data on Sprites and Elves, which are lightning bolts that go into space from thunderstorms.
TSD was responsible for the overall implementation of the MEIDEX instrument. This included system design, technical reviews, testing and Shuttle integration. Technical reviews for the scientists and engineers from Tel-Aviv University (our customer) were held here in Greenbelt, MD. Col. Ramon attended several of the engineering meetings.
The development included integration of the Tel-Aviv provided cameras and digital VCRs into a Hitchhiker Canister. TSD also developed the overall system concept including: a power system, C&DH processor, video switching systems, a pointing mechanism, a vibration isolated optical bench to carry the camera, and flight software for the control of the experiment from the crew’s cabin on a laptop computer. Secondary control of the camera was also possible from a laptop at the Payload Operations Control Center, at NASA GSFC, where Israeli scientists could monitor the video and control the experiment if necessary.
As part of the development process, TSD also prepared the safety data package and safety analyses of the hardware, including the Israeli provided COTS hardware that had been hardened for space flight. This analysis was used to obtain Payload Safety Review Panel approval for Ground Processing/Flight by NASA/JSC and KSC.
MEIDEX was only one of six experiments carried in the Shuttle’s cargo bay as part of the Fast Reaction Experiments Enabling Science, Technology, Applications and Research (FREESTAR) payload that was mounted to a Hitchhiker Bridge. The other experiments were:
- Solar Constant Experiment
- Shuttle Ozone Limb Sounding Experiment
- Critical Viscosity of Xenon
- Low Power Transceiver
- Space Experimental Module
TSD personnel working on the Mechanical Systems Engineering Services (MSES) Contract at NASA/GSFC, under subcontract to Swales were responsible for the electrical interfaces between the FREESTAR experiments and the Shuttle; the electrical integration of the FREESTAR to the Orbiter; and the performance of the integrated comprehensive performance test at NASA KSC.
Press information from CNN.com (January 20, 2003):
Israel scientists in charge of Space Shuttle Columbia’s desert dust-monitoring experiment said Monday they have yet to find any dust storms but are zooming in on thunderstorms with electrifying results. A pair of cameras aboard Columbia have captured video images of an elf—a luminous red, bagel-shaped electrical phenomenon that occurs above a thunderstorm in less than a millisecond, said Yoav Yair, an atmospheric scientist at the open University of Israel in Tel Aviv.
These are the first scientific images of an elf ever recorded from space, and they were captured by chance, Yair said…It was not until the images were transmitted to Yair and other scientists back on Earth that they realized what they had. “It’s causing really great excitement”, Yair said from NASA’S payload control center in Greenbelt, MD. “bingo, we nailed one almost in the first data take. It was amazing.”
The astronauts beamed images of these other electrical phenomena in the atmosphere to the Ground Station. Tel Aviv University scientists have focused on plumes of pollution coming from Europe. Their goal is the same; to see how the particles affect cloud formation and, consequently, climate.
Press information from CNN.com (January 26, 2003):
Most of the pre-launch media attention focused on Ramon, who is Israel's first astronaut and the son of a Holocaust survivor… an Israeli Air Force colonel chosen in 1998 to be his nation's first spaceman... Invariably described as a modest family man, he acknowledged the symbolic importance of his flight, but always tried to steer attention to the scientific goals of the mission and their potential for human progress…
Since the January 16 launch, with the exception of a few brief exchanges with reporters and a pre-planned Earth-to-orbit hook-up with Israeli Prime Minister Ariel Sharon, Ramon has mostly been heard reading out various measurements and describing progress on research projects…Ramon is not the only Israeli performing well in space, though.
The Israeli MEIDEX camera last week captured the first calibrated images from space of elusive electrical phenomena known as elves that occur on top of thunderclouds. Scientists may also have captured a similar but never-before-seen phenomenon that has yet to be named… especially good news for the tiny Israel Space Agency, which gets only about $1 million a year from its government, and wants to someday fly a version of the MEIDEX on the International Space Station.
Postscript:
On January 29, the last day of observations, the MEIDEX, concurrently with airplane imaging, observed a phenolic dust storm over the Sahara desert near Tel-Aviv, thus satisfying all mission objectives.
7:06:26 PM
|