Everyday Astronaut
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6 answers
18 votes
4k views
Would a higher air pressure on the ISS or elsewhere make it easier to "swim" in microgravity?
1 votes

There is some misconception involved in the phrasing of the question. Take a look at the ideal gas law: $$\frac{pV}{nT}=\rm constant$$ $p$: pressure; $V$: volume; $n$ amount of substance ("mass&...

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2 answers
5 votes
250 views
What happens in to the fuel in fuel-rich Lox-Kerosene?
1 votes

This issue deserves a lot more attention than it currently gets. According to research, microscopic soot particles develop that could persist in the atmosphere for a long time. This is essentially ...

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2 answers
3 votes
306 views
Would it be practical to add side payloads on top of Falcon Heavy's side boosters?
1 votes

The idea is to increase payload volume without (that much) changing drag during the lift off - max q ascent phase. Plan B to get more payload volume is to make the "fairing much longer" (emphasis ...

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2 answers
6 votes
333 views
Drawbacks and advantages of two slidable & rotatable control surfaces for BFS sized spaceships
1 votes

This question is opinion-based and answers have to be speculative, but I hope this remains open since it is great fun :-) Concerning the heat shield, I don't see any concern with the current BFS ...

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5 answers
10 votes
2k views
Are there serious business benefits to going to Mars?
1 votes

This question is still both up to date and unanswered. The plans for sending humans to Mars are still pursued without any obvious business plan behind it. As of today, Elon Musk keeps reiterating ...

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5 answers
7 votes
2k views
What sort of analysis was performed before "modern" computing and the invention of finite element analysis and computational fluid dynamics?
0 votes

A less noticed but very impactful branch of Computational Solid Mechanics was also developed during the 60's: model reduction techniques.(*) These are basically about a reduction of the number of ...

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2 answers
3 votes
127 views
Globally extensive overview of rocket startup companies
0 votes

At this year's IAC, there was a talk on the situation of startups developing "small launch vehicles". This excludes all launchers capable of delivering >1000kg of payload to LEO. [source] Bottom ...

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2 answers
2 votes
128 views
Resources for planning and schedule a launch-watching day-trip in Florida?
0 votes

The following video was quite well-received: Though I guess it's not “written“, as asked, but that might be more of an advantage in terms of motivation. This ...

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2 answers
4 votes
107 views
Budgetary mission considerations for a disembodied pilot/crew?
0 votes

It all boils down to weight ratio: How many kg of payload are currently needed to get an average human to the moon and back? Here, payload means the payload of the return capsule plus all mass that ...

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