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Questions tagged [feasibility]

the practicality of a proposed task

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11
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2answers
2k views

How feasible is the Delta-Glider?

In Dr. Martin Schweiger's freeware spaceflight simulator Orbiter 2016, a very popular(but fictional) spacecraft is the Delta-Glider. It is capable of take-off from a runway, has hover engines for ...
2
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1answer
73 views

Stabilization of Lagrange point asteroids

There are a couple discovered asteroids that orbit around L4 or L5 Sun-Earth Lagrange points https://en.wikipedia.org/wiki/(419624)_2010_SO16 https://en.wikipedia.org/wiki/2010_TK7 From what I read ...
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2answers
384 views

Is the Pulse detonation engine feasible

Now this is a big question and we'll need to fix it and make it more specific but I don't know how . I recently started reading up on alternative concepts and one that was talked about was pulse ...
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3answers
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Repurposing a nuclear submarine for space travel

Although a nuclear submarine might not make a great spacecraft, would it be possible to repurpose it for space travel? Benchmark: USS Illinois (SSN-786), Virginia-class submarine (born in Virginia, ...
4
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1answer
210 views

Could momentum transfer be practical (e.g., for orbital insertion at Pluto)?

Constraining exploration of outer bodies to flybys (such as New Horizons) seems unfortunate in terms of the amount of science that can be done per mission. Using a slower planetary approach has ...
1
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1answer
98 views

Probable future tech to sterilize an EVA suit as it is being worn

As far as I've been able to find (please correct me if I am wrong!), there is no current technology that would permit an EVA suit that is being worn to be sterilized without risk of damage to the suit ...
4
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1answer
268 views

How often can liquid hydrogen engines be restarted?

A proposal for lunar development, LunarCOTS, relies on a reusable shuttle running on LH2 and LOX to work. It lands, is refueled on the lunar surface, and then takes off again. Presumably it could sit ...
6
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1answer
302 views

Could oxygen be used in a resistojet in a vacuum environment?

Resistojets heat a compressed gas or vaporize a liquid to expand it through a nozzle for thrust. They improve a bit on the performance of cold gas thrusters. This experimental water resistojet managed ...
17
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3answers
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Are Armageddon's simultaneous shuttle launches feasible?

In Armageddon, two space shuttles launch from adjacent pads mere seconds after one another. This seems highly implausible for several reasons: Pressure, heat, vibration and debris from the first ...
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2answers
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Why haven't we returned samples from Mars?

So far, we have gotten rovers on Mars to take samples and analyze them and send data back to Earth. However, why haven't we gotten a rocket to land on Mars, collect a sample, and blast it off back to ...
6
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3answers
1k views

Mining a near-Earth passing asteroid with profit?

The answer by PearsonArtPhoto in this question got me thinking, particularly this line: Asteroids would be cheaper to go to than the Moon I suppose the subject here are asteroids that pass in the ...
3
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1answer
218 views

What barriers are there to creating a reusable rocket sled lanchpad? [duplicate]

The ideal rocket sled launch is building a track that accelerates a rocket (via linear motors or something like that) up the side of a tall mountain. Not only could this save huge amounts of fuel, but ...
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3answers
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Can a single Soyuz return a crew of six back to Earth?

Let's say that the ISS has to be immediately evacuated and that one of the two Soyuz is broken. Could the crew quickly remove "unnecessary weight" (seats maybe?) and fit six person to return back to ...
9
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3answers
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Are magnetic boots in space practical?

I can't count how many science fictions stories I have read where someone is strapping on magnetic boots to walk in or on a space ship without gravity. How realistic of a solution is this? Just for ...
5
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1answer
734 views

Suitability of Hydrogenated Boron Nitride Nanotubes for structural and shielding elements of spacecraft

I'm writing a novel set 100+ years in the future. I'm looking into future materials from which spacecraft may be built. I read an article about Hydrogenated Boron Nitride Nanotubes. I'm interested in ...
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3answers
596 views

Could a powerful enough laser or maser heat the core of Mars?

I think that if we could build a powerful enough laser/maser to heat the core of Mars up and melt it, it could generate a magnetic field, which would allow for easier living on Mars. Could this be ...
2
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3answers
194 views

Is it possible to have a satellite that bounces data back from sattelites farther out in the solar system?

Say we put a satellite in orbit around Neptune or Uranus that simply stores and sends data back to earth? Like as a big range extender for missions like New Horizons that work so far out that ...
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2answers
442 views

Should we use Mars as the main source of interplanetary fuel? [closed]

Robert Zubrin makes a compelling case for using Mars as a site to make methane fuel for the return trip back to Earth. However, maybe there is an additional refinement to this model; In addition to ...
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2answers
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Could magnetic “boots” be used to simulate the effects of gravity for asteroid ships?

I have been to the Wikipedia pages on alternatives to gravity, and found the usual alternative forces, with the potential for magnets and the specious Russian claims, but I'm wondering why not just ...
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2answers
212 views

Is it possible to make an Internet of Things device that works locally on Mars?

I know this is a weird question. I can't find a radiation hardened microcontroller (μC) that does Bluetooth Low Energy or even WiFi. Is there any reason this would not work on Mars, if a radiation ...
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1answer
1k views

Is it possible to put a satellite into geostationary orbit using a weather balloon? [duplicate]

I was wondering about the following situation: First, you send up a balloon with a satellite with some thrusters built-in. As soon as the balloon reaches the geostationary height, it deploys from the ...
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2answers
658 views

What existing life on Earth is best suited for the Martian environment?

What existing life on Earth is best suited for the Martian environment? By best suited, I mean it could theoretically be placed on Mars and easily adapt or thrive within the existing environment the ...
4
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1answer
303 views

Could a sling launcher be used on Mars?

A sling launcher (discussed in this write-up by Landis) is a tower with a motor that spins a hub with two or more cables attached. Payload(s) are attached to the end of one or more cables and ...
6
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5answers
850 views

Could the ISS be propelled to Mars?

As the ISS has shown the ability for human habitation for extended periods, might we be able to add a propulsion unit to the ISS that would be capable of providing delta-v to send ISS to a martian ...
18
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1answer
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Why explore Ceres?

The multi-target orbiter Dawn spacecraft, launched in 2007, is now approaching the dwarf planet Ceres and had recently sent high resolution images of Ceres from a distance of 46,000 km. What is so ...
6
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1answer
130 views

Is high velocity feathered configuration reentry possible?

Feather configuration for reentry used in SpaceshipOne, they say, significantly reduces heat loads on reentry by encountering most drag and significantly reducing a large amount kinetic energy at much ...
2
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2answers
388 views

In the near future, will spacecraft be able to carry the means to cook and serve traditional meals?

Just about every time I watch a sci-fi show or movie about space, there always seems to be "regular" food on board. That is, stuff that we on earth (and more specifically Americans) recognize as "home ...
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3answers
699 views

Why not land booster stages in a cone or net?

Why must you land the boosters on a flat surface? Why not aim for a cone a deep net that can accommodate rough seas, winds, etc? A picture is below - obviously I am not an artist nor an engineer.
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0answers
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What factors affect the thickness of EVA spacesuits?

Most current extravehicular activity spacesuits are very thick and chunky, like EMU or Orlan. Even though NASA/MIT work on something thinner (Bio Suit), it's not for EVA in vacuum of space, but for ...
20
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1answer
918 views

How far did Pan Am go with its plans to have passenger trips to the Moon?

It is well known that Pan American World Airways took more than 90,000 reservations for future passenger flights to the Moon from 1968 until its fall into bankruptcy. How far beyond that did Pan Am go?...
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1answer
115 views

Paperback Books in Space?

Would it be possible (not necessarily plausible) for an astronaut to bring a paperback novel along on a mission and accidentally leave it in space somehow? Would an astronaut even be allowed to bring ...
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2answers
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How feasible would it be to move the ISS to the surface of the Moon to recycle its components in future?

I see it as an awful waste of energy in not only creating the International Space Station (ISS) components, but also in getting them into space to only decommission the station by letting it fall back ...
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4answers
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Will any Indian in the final crew of the Mars One missions be in violation of Section 309 of the Indian Penal Code?

Last year the Mars One Foundation invited volunteers for a one-way trip to take up residence with the War-Lord. Over 200,000 humans volunteered; amongst them close to 20,000 Indians. A fraction of ...
8
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3answers
8k views

Could India Send a Lander to Mars?

India has recently sent a small spacecraft to Mars, as a technology demonstration mission. It has also subsequently successfully demonstrated its much-delayed cryogenic upper stage engine with the ...
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7answers
15k views

Why aren't linear aerospike engines in common use?

Linear aerospike engines are an old idea that seem so full of promise. Why are they not widely used today by the likes of Boeing, SpaceX, etc.?
17
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2answers
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How do we make a round-trip journey to Mars?

I've been to Kennedy Space Center in Florida, where I saw the huge Saturn V rocket... This was used to get to people to the moon. It had a Lunar Module to propel itself on and off the moon's surface ...
8
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1answer
199 views

Have Magnetorquers been used anywhere outside of the Earth?

On Earth, small satellites often include Magnetorquers. A magnetorquer allows the satellite to re-orient itself without using fuel in a way more permanent than magnets. While not every planet has a ...
32
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2answers
18k views

Would it have been possible to have sent the Space Shuttle around the Moon?

I'm curious about whether or not the Space Shuttle could have been used as a lunar orbit vehicle - basically, would have it been technically capable of getting to the Moon, entering orbit, then ...
20
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4answers
2k views

Any possible setbacks in deorbiting larger space junk and let it burn up upon reentry into atmosphere?

Space junk, orbital debris, or space waste pose a risk on functional satellites and space laboratories / stations in orbit around Earth. According to Wikipedia: Currently about 19,000 pieces of ...
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4answers
2k views

How would manned interstellar travel become feasible? [closed]

What is the actual feasibility of interstellar travel? For instance, a manned journey to Proxima Centauri, given the distance, what technology would need to be developed/perfected for such a journey?...