Comments by "mpetersen6" (@mpetersen6) on "Spin Gravity Compared" video.

  1. In an article in Analog Niven suggested a structure similiar to the one in the Bobiverse. With multitudes of loops. Name of the article was Bigger than Worlds iirc. Probably around 1979. No, 1974.
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  2. It's farcical that we have ZERO data on how lower g affects human physiology. We have enormous amounts of data for 1gee. And quite a bit for zero gee. But nothing for the in-between. Two points on a graph. And we could have had some data in the last 4 decades. If we had wanted to. NASA to could have cobbled together an orbital facility that would have allowed gathering some data. Using mostly existing hardware. But getting such a program past the US Congress would have been impossible. Yes here has been a few experiments in LEO using centrifuges and mice etc. Big freaking deal. I'm not saying we should put a ring shaped station in orbit for this purpose. But we could have done it using either tethers (1) or spent stages and a small hab module. My favorite would've been two Shuttle External Tanks docked nose to nose. Attach a Hab Module to the bottom of one ET. After crew transfer spinup the assembly for .17 gee. Later spin it up for .34 gee. When plotted on a graph are the effects from 0 gee to 1 gee a straight line. Or some sort of curve. If a curve does the data show a slow rise then steepen radily as we apptoach 1 gee. Or does the data rapidly rise and then flatten out. And yes l know about the spin gravity experiments that took place on Earth. Both the US and the Soviets did this. But the experiments were more to see if humans could adapt to spin gravity. Not what the effects would be at lower gee. 1) One of the earliest tether methods l remember was in a Harry Harrison novel.
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  3. @bbartky  It would be a lot cheaper to do the research in LEO than on the Moon or Mars. Another area where spin "gravity" should be useful is on orbit refueling. Unless we could develop a fuel bladder one could pump fuel out off using gas pressure spin "gravity" should make it a lot simpler to pump fuel and oxidizer around.
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