"Совсем сдурел!" - скажет читатель - "Какая весна, когда за окном морозяка и сугробы по шею?" Да, действительно, календарная весна начинается первого марта, а астрономическая - аж 20-21 марта. Но если мы построим график долготы дня и скорости его изменения, то увидим, что на конец января - начало февраля приходится участок, когда в большинстве
(
Read more... )
URL:
www.americaspace.com/
?p=30905
from 'Just Fix It': The Unlikely Mission of STS-60 (Part 2)
By Ben Evans
.....
As for Spacehab-2, many of its experiments produced exceptionally pleasing results. Perhaps the most obvious “problem” was the partial collapse of the flexible rubber duct between Discovery’s environmental control and life-support system supply line to the Spacehab floor fitting. In his post-flight press conference, Bolden referred to it as the “collapsed rubber duck.” It was significantly “crimped” and Chang-Díaz and Davis were sufficiently concerned that it might restrict airflow into the module.
Bolden called the ground and advised them of the crimped duct. A little investigation identified the cause as a blockage in Spacehab’s atmospheric revitalisation system fan inlet debris screen in the fan inlet muffler. The blockage increased the suction in the environmental control and life-support system line and caused the duct to collapse. Whilst Mission Control mulled over the issue, Sergei Krikalev floated over to find out what was happening. As a cosmonaut with two long-duration Mir missions behind him, Krikalev had nine times more flight experience than the rest of the shuttle crew put together. He was perplexed at the Americans’ stance. His question was simple: “Why don’t we fix it?” As logical as the question seemed, it did not fit in with the normal shuttle protocols, which required support and consensus from the ground. “The stuff you guys do just doesn’t make any sense,” he said, paraphrased by Bolden in his oral history. “On Mir, I wouldn’t even have called them. I’d have fixed it and then I’d let them know what we had done.”
Several days later, Chang-Díaz happened to be running a televised guided tour of the orbiter, speaking in Spanish, for a Costa Rican audience. As he passed through the tunnel from Discovery’s middeck into the Spacehab module, he happened upon the crimped duct. He mentioned it in passing to his audience. Not long afterwards, Mission Control called Bolden in surprise: “You guys didn’t tell us it was that bad!” Proposals to fix the duct were quickly sent up to the crew, but the astronauts found them unsatisfactory. Then the orbiter passed out of direct communications with the ground and Krikalev suggested an impromptu repair to clean the screen and insert the stiff plastic cover of the on-board atlas to reinforce the collapsed duct. “If you … rolled it up and stuck it inside the hose,” explained Bolden, “then it expands. It wants to go back to being flat … and makes the hose stand out.” Upon seeing videotaped footage of the fix, Mission Control made no comment, but after the flight someone approached Bolden. “We wish you hadn’t just gone ahead and done it,” he said. “We wouldn’t have disagreed with it if you’d told us that’s what you were planning to do!” In the minds of both Bolden and Krikalev, it was a lesson in the different working practices of the Americans and the Russians.
It was a lesson that both sides would learn through bitter experience as they got down and dirty with the Shuttle-Mir programme in the next few years.
Reply
Reply
чистых еуропейцев?
Впрочем, соотносится с точки зрения исторической
правды примерно вот так (если у вас 3 метра,
то наш рост считайте сами):
Reply
Leave a comment