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Quiet Fan Technology for Deep Space Missions ???
schmitt trigger:
In the mid to late 1990s, after the Soviet Union had broken up and funding for military and science projects had significantly diminished, there were many top-notch scientists available for lectures and research. For a very affordable fee.
My company was intent on designing a very high density PSU, where heat removal is one primary concern.
They brought this Russian thermal expert, who among other things had been involved in space borne equipment.
I could not attend, but those who did found the lectures fascinating. Some of the comments that I recall are similar to comments made by previous posters: Namely that everything one takes for granted on the earth's surface, is no longer a straightforward solution in space.
Uncommon solutions to common problems were the norm.
Jeroen3:
--- Quote from: schmitt trigger on May 11, 2018, 01:04:48 pm ---Namely that everything one takes for granted on the earth's surface, is no longer a straightforward solution in space.
--- End quote ---
When they dock the dragon capsule, they pressurize it, but they still enter with oxygen masks since the materials will make the air hazardous. Both from outgassing and debris separated by vibration. Then they ventilate it for some time to ensure there are not pockets of unbreathable air left.
Astronouts also require fresh air in their sleeping cabin, since otherwise they would suffocate from their own breath. Air is also weightless, and won't disperse as it does on earth by the classical though of "hot air moving upwards".
Recently a new type of wind turbine went up on Neeltje Jans, it has some strange fins at the end of the blades. This significantly reduces the "whoosh" sound. Fluid dynamics is strange.
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