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Goodbye, Galileo
In message , Pat Flannery
writes Michael R. Grabois ... change $ to \"s\" wrote: "All these worlds are yours except Europa. Attempt no landings there." Giant floating Jovian "Windbag" creatu "The pizza's here! But watch it, the damn thing's hot! Brilliant, as always. I hope someone writes a serious (or not) short story on this theme, like "A Song for Skyfall" that came out after SL-9. We are dropping things on these hypothetical aliens they've never seen before - refined metals, shaped parts, isotopes. We are doing what the aliens did for us in "2001". -- "Forty millions of miles it was from us, more than forty millions of miles of void" Remove spam and invalid from address to reply. |
#12
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Goodbye, Galileo
In article ,
Jonathan Silverlight wrote: The umbrella-antenna technology has a long history of successful use, e.g. on TDRS. The Galileo HGA disaster was (probably) a mistake in the details of how the technology was applied, not an indication that the technology is fundamentally flawed. (And had Galileo been launched using Shuttle-Centaur as originally planned, the antenna would have been opened before separation from the shuttle...) How does that work? The antenna wasn't exactly strong, though it was presumably stronger than the motor :-( What sort of jolt does it get when the engine fires? Not very much on a Centaur, which does not have terribly high acceleration. The fully deployed antenna is reasonably strong, and it is so light that the acceleration does not induce large forces. And just to add another question (sorry everyone) wasn't there some concern that the same type of antenna was used in other satellites (TDRS ??) There was indeed, but since it invariably worked fine on TDRS, the conclusion was that the problem was *probably* something unique to Galileo. The prime suspect is redistribution of lubricant due to vibration from all the traveling Galileo did while awaiting launch, but nobody can be really sure. -- MOST launched 1015 EDT 30 June, separated 1046, | Henry Spencer first ground-station pass 1651, all nominal! | |
#13
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Goodbye, Galileo
"Diane Wilson" wrote in message .. . In article , says... In article , says... The Spacecraft Elapsed Time countdown clock has reached zero. In less than an hour, Earth will notice that the signal has disappeared. So long, Galileo Orbiter. I had some good times watching your journey. Many thanks to all the people who built and operated you, and brought us your science. Farewell, Galileo, and we thank you. She sure was a good ship. Godspeed Galileo |
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Goodbye, Galileo
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