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Old Today, 06:44 AM   #121
fountainkopf
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Quote:
Originally Posted by AcesHigh View Post
your section cut shows only a narrow passage inside the tubes for people. Anyway, people are too close to axis of rotation. You can´t have a slow roll at that diameter from the axis to get 1g and even worse, people will feel dizzy because of coriolis effect.

There will be a tube extended to make the connection in space. I only claimed ½ G to get used to Mars conditions. 0,2 G could also be better than no G.


I have the radius 7500 mm so the G when known will the v ( rotational speed ) easy to calculate.


https://en.wikipedia.org/wiki/Centripetal_force


On each rotation the distance the sleeper travels is 47 meters.


0.2 Gs is 1,962 m/s^2 => so the F is 8.15 N if the astronaut is 80 kg.


So the equation gives us rotational speed of 0.87 m/s...which means => 0.87x60 = 52.2 meters in a minute...just one round per minute...hardly making anyone dizzy I would say.


For the sleeping problems I would recomment melatonin in capsules for each.
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Old Today, 12:00 PM   #122
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Here a NASA lady explains that 800 kW is enough for a Mars mission; https://www.youtube.com/watch?v=W8SUrR8Rb7o


My craft has about that in Mars and much more on Earth distance from the Sun.
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Old Today, 01:34 PM   #123
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Here the interconnecting tube explained and frontal area reduction compared to space shuttle.

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Old Today, 05:45 PM   #124
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No way the radius of rotation to where astronauts sleep is 7 meters, looking at your cross section.

Also, it seems you are not understanding the part about Coriolis force.

The problem is the gravity gradient created between upper and lower body parts when the axis of rotation is too close to the surface where the astrout stands.
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Old Today, 06:02 PM   #125
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Here a NASA lady explains that 800 kW is enough for a Mars mission; https://www.youtube.com/watch?v=W8SUrR8Rb7o


My craft has about that in Mars and much more on Earth distance from the Sun.
What time in the video?
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Old Today, 07:01 PM   #126
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What time in the video?
09:10
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Old Today, 07:23 PM   #127
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My " big plan " is this.

The faster ship sends a crew to check a landing site on Mars ( there are really smooth 20-30 km dia craters that seem even for landing ). The lander with 2 persons ( and 2 electric cars ) drive back and forth the crater to check anything dangerous and flags a landing strip for the big ship that carries the building material for a habitat. The habitat has to be somewhere near there too ( valley that can be covered with a greenhouse ).

The two man crew of the big ship departs ( with the scout team ) after initial build up has been done. Big ship stays in the crater to be refuelled later after the fuel production has been put to action. Later Elon Musk brings folks there with his 50 m high 100 people IST ship.

This is a low risk job as there will be more players to be able to help one another in colonizing the planet.


http://orbiterchspacenews.blogspot.f...8_archive.html

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Old Today, 07:28 PM   #128
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Quote:
Originally Posted by AcesHigh View Post
No way the radius of rotation to where astronauts sleep is 7 meters, looking at your cross section.

Also, it seems you are not understanding the part about Coriolis force.

The problem is the gravity gradient created between upper and lower body parts when the axis of rotation is too close to the surface where the astrout stands.

The beds are on the outer wall of the habitat. Plane can be tuned to have even 18 m distance if needed.


Nothing mystical about coriolis; https://en.wikipedia.org/wiki/Coriolis_force
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