Word: oxygenating
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Dates: during 1980-1989
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...pounding of the surf, or the whine of a chainsaw. The only bits of excitement were the occasional long periods of silence, each one of which caused me to look up from my notes, half-expecting it to be followed by a dull thud and a cry for oxygen or a taxidermist...
Pioneer will continue to observe Halley's, measuring water loss and looking for oxygen, carbon, sulfur and other elements in the coma's gases, until March 6, when the sun will begin blocking the Venusian view of the comet. On that day, however, the first of an international flotilla of spacecraft will take over Halley's vigil. The Soviet probe Vega 1 will fly through the coma, passing within 6,000 miles of the nucleus. It will be followed by another Soviet craft, two Japanese probes, and the European Space Agency's Giotto, which will make the most daring pass...
...Feynman probed further, he was told by NASA that the surface temperature of the external tank, which contains supercold liquid oxygen (-297 degrees ) and hydrogen (-423 degrees ) had not been abnormally cold, casting doubt on a theory that liquid fuel, leaking unnoticed from the tank, had chilled the nearby booster. He also discovered that the wind on the morning of the launch had been blowing across the cold surface of the tank toward the right booster. As one NASA engineer explained, "Even a slight breeze, wafting over the external tank full of those cryogens (supercold fluids) may have been enough...
...side of Challenger's right booster had either melted or wrenched loose the struts that held the booster to the lower end of the external tank. The booster then pivoted on its still intact upper-attachment fitting and crashed its nose into the tank wall. The escaping liquid oxygen and liquid hydrogen ignited, causing the fatal explosion. At week's end NASA had not commented on the report...
...flights for 18 months and extensively redesigned the Soyuz capsule. NASA was also cautious. It suspended manned flights for 21 months after the Apollo fire, a period of agonizing self-appraisal. Admitting that no one had realized the extent of the fire hazard in a capsule full of pure oxygen, NASA switched to cabin atmospheres that consisted of 60% oxygen and 40% nitrogen while the spacecraft was on the pad. The agency also developed a new type of hatch that could be opened in five seconds. As NASA workers last week searched for answers to the Challenger tragedy and pondered...