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Dusk for Dawn: NASA Mission to the Asteroid Belt
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09-07-2018, 11:18 PM
I found the brief video at the link below to be interesting and downright uplifting.
https://www.youtube.com/watch?v=Hth3nKGKTFc
“More than any other time in history, mankind faces a crossroads. One path leads to despair and utter hopelessness. The other, to total extinction. Let us pray we have the wisdom to choose correctly.” – Woody Allen
09-09-2018, 05:05 AM
Nice!
It's great to see people doing constructive and imaginative things. 
09-09-2018, 04:42 PM
Too bad it couldn't stay in orbit and continue transmitting. Solar or nuclear power? Wonder why that wasn't incorporated.
09-09-2018, 05:08 PM
09-10-2018, 03:08 AM
(This post was last modified: 09-10-2018, 03:11 AM by doubletroublejim.)
Does anyone know what IM propulsion is?
(09-09-2018, 05:08 PM)ModestProposals Wrote:(09-09-2018, 04:42 PM)doubletroublejim Wrote: Too bad it couldn't stay in orbit and continue transmitting. Solar or nuclear power? Wonder why that wasn't incorporated. I thought it was still in orbit, but not transmitting.
09-10-2018, 05:40 AM
Ion drives use a tiny amount of a gas , charge it and then spit it out the back at very high velocity, thereby creating a thrust. The trouble is that the thrust created is tiny and eventually the store of gas is exhausted.
09-11-2018, 02:05 AM
(09-10-2018, 05:40 AM)andrew_o Wrote: Ion drives use a tiny amount of a gas , charge it and then spit it out the back at very high velocity, thereby creating a thrust. The trouble is that the thrust created is tiny and eventually the store of gas is exhausted. Yes, the basic idea is rather than an explosive reaction as is typically used, it is just a charged gas repelled by an electrical charge. |
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