NASA Europa Missions, projects and proposals for the 2020s |
NASA Europa Missions, projects and proposals for the 2020s |
Mar 5 2014, 12:53 AM
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Forum Contributor Group: Members Posts: 1374 Joined: 8-February 04 From: North East Florida, USA. Member No.: 11 |
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Mar 17 2014, 11:17 PM
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#2
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Senior Member Group: Members Posts: 2106 Joined: 13-February 10 From: Ontario Member No.: 5221 |
But saving all that mass by not carrying a gigantic HGA has to count for something, right? Galileo navigated just fine with low-gain only.
The main issues in that case would be limiting data corruption on the trip to Earth. And of course, waiting years instead of hours to find out if an experiment had a payoff will play havoc with blood pressure back home! |
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Mar 18 2014, 02:22 AM
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#3
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Senior Member Group: Members Posts: 2542 Joined: 13-September 05 Member No.: 497 |
But saving all that mass by not carrying a gigantic HGA has to count for something, right? A lot of the mass in a telecom system is in the modulation and RF circuits. The "Small Deep Space Transponder" http://en.wikipedia.org/wiki/Small_Deep_Space_Transponder weighs 3 kg and doesn't include the output power amplifier. Define a detailed mass breakdown with components you can actually buy and I'll believe it. Until then you're just writing science fiction. -------------------- Disclaimer: This post is based on public information only. Any opinions are my own.
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