Questions tagged [spacecraft]

Questions regarding the craft that house humans or equipment during space exploration.

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1answer
48 views

Artificial Gravity [closed]

Is it possible to make the artificial gravity for space station to work by using the Permanent Magnet (PM) technology to float/rotate and balance out the inner floor/living quarters to counter-rotate ...
2
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1answer
174 views

Can jet engines be used to launch a rocket?

Following up on my previous question Can a VASIMR Plasma engine be used to launch a rocket?, I was told that VASIMR plasma thrusters are inefficient in an atmosphere. I then had the idea of using jet ...
7
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1answer
415 views

What about orion ISS missions?

I remember that the Orion spacecraft was a thing when it had its maiden voyage in 2014. Nowadays, all I read about is the SpaceX Crew Dragon and Boeing Starliner, which are both running late. Soyuz ...
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0answers
40 views

What would happen if the universe suddenly stop moving? [closed]

I know we’re not only rotating on our own axis but around the sun and around the center of the Milky Way. But we’re also moving at incredible speed through the universe. What would happen if that ...
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4answers
230 views

What exactly makes PHP CLI fundamentally unsuitable to power all the math on board a space craft?

Let's say that there is an eccentric multi-trillionare who made his fortune by coding a very popular service in PHP. He knows it very well, and has such a love for it that he makes a rather unorthodox ...
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1answer
73 views

What would be the cost of a thorium reactors at the core of a large starship? [closed]

Thorium is a high power substance that can contains large amounts of energy in a small space. How much would it cost to install and maintain one on a large starship? As well as using solar panels, ...
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2answers
81 views

How to use specific impulse for multiple stages

I am given a scenario where I need to create a program to give the initial launch mass of a spacecraft that can vary between 4 and 20 stages. I am given that the "specific impulse for all stages is ...
19
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4answers
4k views

How does a Spacecraft change its orbit?

I am a high school student. I saw the latest Indian spacecraft "CHANDRYAANN 2", which was in orbit around the Earth for 14 days..... I am so curious to know how a spacecraft changes its orbit. I ...
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2answers
230 views

What form of Electric Current Powers Spacecrafts - Alternating Current (AC) or Direct Current (DC)?

Almost all spacecrafts launched by humanity consist of electrical components which require electricity to run. Usually, spacecrafts are either powered by a Solar Panel or using Radioisotope ...
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0answers
84 views

How many Starship launches would it take to build this simple centrifugal space station concept?

Every centrifugal space station design I have seen uses either a large curved material or an inflatable structure. There have been no large scale curved material construction in space and only one ...
4
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1answer
200 views

What will happen to the rocket exhaust particles fired by spacecrafts?

During the launch, when the rocket is itself yet to attain a stable orbit, the exhaust from the launch vehicle is directed approximately in the opposite direction of its velocity. So, there is no ...
6
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2answers
343 views

Orbital mechanics: Jump from ISS, where will I meet again?

This is a hypothetical question, and I hope it is on-topic here. If an astronaut would stand on the surface of the ISS, and they will make a jump directed perfectly towards the earth, what will their ...
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0answers
100 views

Help: Specific Quote for Interstellar Spaceship

I know that this quote exists, i just don't know who said it or the specific language. The quote goes something like this: If we ever decided to send a manned spaceship (generational ship) to ...
3
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1answer
347 views

Rover vs pathfinder vs lander?

I am confused in difference between rover and pathfinder and lander I have often read/heard all these three terms when searching/studying about Mars Although all 3 of these are parts of space craft ...
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0answers
143 views

Cable lacing in spaceflight, when was waxed cord forbidden?

During the sixties of last century traditional cable lacing was done using a thin cord, traditionally made of waxed linen. The wax should improve knot retention. From NASA-STD-8739-4. Using waxed ...
14
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2answers
3k views

Could a complex system of reaction wheels be used to propel a spacecraft?

I was think about different ways spacecraft could feasibly move around and I came across Reaction Wheels as a way they can rotate. So I was curious if a complex system of them could be used to propel ...
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1answer
151 views

Magnetic force-driven propulsion system for an interplanetary/interstellar spacecraft

I have come up with a conceptual idea of a magnetic force-driven space propulsion system. What I believe is very unique about this propulsion system concept is that its working principle should not ...
2
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3answers
436 views

Why don't launcher rockets ordinarily have names?

There are names for the class or family of launcher, e.g. Delta IV, Electron, Falcon. Sometimes the launcher is "named" for a specific configuration of a class, e.g. "Delta IV Medium+ (4,2)", "Chang ...
6
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2answers
650 views

Why isn't LOX/UDMH used in staged combustion rockets now-a-days?

Liquid rockets usually use a propellant pair of fuel and oxidizer. I've seen some rockets from 1960's that used LOX/UDMH as propellant pair but why they are not used any more although it is mentioned ...
5
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1answer
524 views

Which Voyager spacecraft “mutinied”, and what really happened?

The August 2017 BBC News Science in Action podcast The Algae that Changed the Earth includes other topics, including the following: In August and September 1977, Nasa's probes Voyager 2 and ...
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1answer
222 views

Could a CubeSat be propelled by this low-tech electromagnetic propulsion system?

I have come up with a conceptual idea for a low-tech electromagnetic propulsion system for a CubeSat, and I would like to know if it would create (on a theoretical basis) a net force strong enough to ...
2
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0answers
80 views

What was the volume of the Space Shuttle orbiter, not just the crew cabin or cargo bay but the total volume of the entire craft?

For context, after an in-depth Google search, I asked the question "What was the volume of the Space Shuttle orbiter, not just the crew cabin or cargo bay but the total volume of the entire craft?" on ...
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0answers
77 views

How do you calculate burns needed to land?

Assume I was landing a rocket and wanted to do calculations on how to correctly land. How do you determine at what time you fire the engine and at what power to successfully land on a predetermined ...
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0answers
114 views

Recalculate Orbital Elements after a ΔV

I would like to write a program able to simulate a keplerian orbite given an initial position and velocity (r0, v0) and able to manage accelerations in different directions. To simulate the orbit, I ...
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1answer
91 views

How to become an astronaut?

I am a pure/applied mathematics student at Tehran University. About 2 or 3 years later I will get my bachelor's degree and start studying master's in applied math or theoretical physics. And maybe I ...
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1answer
149 views

Did the heat shield of the Vostok 1 capsule ablate during reentry?

This Wikipedia article (in german) has some information about the heat shield of Vostok 1. The heat shield was made from asbestos, its thickness was increased from 3 cm to up to 18 cm. The weight of ...
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1answer
95 views

what would happen to an ohio Class nuclear sub if it was launched into Space [duplicate]

Years ago I read a neat Syfi Book about a special warp phase engine that was thrown into a sub and used for space travel..I also grew up Watching Star Blazers.. lets say a late model Nuclear Sub was ...
12
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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 ...
14
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5answers
7k views

What are the benefits of cryosleep?

NASA is working on a so-called 'Cryosleep Chamber', but why do they need it so badly? There must be a lot of benefits attached to this technology..
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133 views

ECI to LVLH transformation [duplicate]

I am working on a transformation of ECI coordinates to LVLH (Local Vertical Local Horizontal) coordinates in order to calculate satellite maneuvers. Does anybody know how should I approach the problem?...
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0answers
35 views

application of optimal control for spacecraft control on elliptical orbits

I want to start writting paper for spacecraft control on elliptical orbits, start with introduction of what is orbits and different object out of earth and on orbits(currently and till now) so I want ...
4
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1answer
159 views

What might be a viable avenue of propulsion research in aiming for mission delta-V north of 100 km/s?

This question was inspired by some comments of mine I left on an answer here: Is it better to develop more powerful rockets instead of seeking and developing new technologies? and thus in turn both ...
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1answer
104 views

Is it better to develop more powerful rockets instead of seeking and developing new technologies? [closed]

I have question about Space Industry and Era. I'm aiming to being Rocket Scientist but I think it looks like will be so hard to reach far planets with these rocket technology that uses Newton's Laws ...
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1answer
542 views

How did the Venus Express detect lightning?

I found it very interesting (especially the sound recording) of the Venus Express detecting lightning on the planet Venus. I found it strange watching the ' national geographic ' video about the ...
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3answers
1k views

When do aircraft become solarcraft?

Any body travelling through particles undergoes drag. Any body able to generate lift (for instance spheres cannot generate lift) can generate lift if it undergoes drag. First by assuming one body in ...
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2answers
171 views

Were there any spacecraft not configured for a spacewalk?

Since the first spacewalks were preformed, have there been any spacecraft that didn't allow for a spacewalk?
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1answer
138 views

How would molten or liquid metal be transported in open space? [closed]

How to transport a ball of liquid, molten metal nearest to the Sun possible? It must be close to the Sun for the metal to stay molten. However, to stay safely cool enough, the spacecraft must always ...
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2answers
829 views

Can the Right Ascension and Argument of Perigee of a spacecraft's orbit keep varying by themselves with time?

I came across the orbital data for a low Earth orbit spacecraft and one thing which I am not able to understand is why does its Right Ascension of ascending node and Argument of Perigee keep changing ...
4
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1answer
153 views

Why do GEO satellites need different types of antenna?

Why do GEO satellites like the one shown in the picture below need different types of antenna? Is there a reference library or website where we can get more information on different antenna types, ...
25
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9answers
6k views

Would a grinding machine be a simple and workable propulsion system for an interplanetary spacecraft?

I am wondering if any space agency has ever considered using a grinding machine as a propulsion system for an interplanetary spacecraft. This system would not be used to lift the spacecraft off of a ...
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3answers
189 views

Does it make sense to invest money on space investigation? [closed]

I recently saw this picture - drawn by the excellent Spanish cartoonist 'El roto' Translated (please, don't hesitate to edit the question if you find a better translation) They looked for signals ...
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1answer
156 views

Astrophysics on “The Martian”

In the movie the martian what was the purpose of the hermes crew in blasting a part of the ship? Was that explosion on the front or back of the ship? After the explosion what happened to the speed ...
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2answers
95 views

What is a safe speed in space for spacecraft?

Does traveling fast as possible shortening the duration of the mission lessen chances of collision or mechanical failure, or does traveling slower in space in some way safer?
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1answer
175 views

If a MarCO-type CubeSat were in orbit around Bennu, what kind of power would it need to communicate with the Deep Space Network?

This is a follow-up question to: What is the lowest power signal that the DSN can detect? Essentially, I have determined that the asteroid Bennu (ranging from 25 to 350 million kilometers from Earth) ...
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1answer
126 views

What is the lowest power signal that the DSN can detect?

It is said that the Deep Space Network can detect low-power signals sent from Voyager in the range of 10^-16 W. I can't seem to find any sources that indicate what the minimum power requirement of a ...
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2answers
205 views

Sources of Xenon or other noble gases in space?

Xenon is a common choice for ion thrusters, though other heavy noble gases could work due to their low ionization potentials. I got thinking about building or refilling future space travel ion ...
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3answers
393 views

Walking in a rotating spacecraft and Newton's 3rd Law of Motion

I am wondering how Newton's 3rd Law of Motion would apply in the case of a man walking the length of a rotating spacecraft. Please reference the drawing below. Say that there was a spacecraft ...
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1answer
108 views

Would it be possible to reach Mars using the same fuel-saving method SpaceIL's Beresheet is using?

A few minutes before SpaceIL's Beresheet spacecraft was launched into space, Israeli prime minister Netanyahu congratulated SpaceIL and all those involved and said: "We are already waiting for you to ...
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1answer
139 views

How would you eject an object from an airlock for maximum velocity? [closed]

If a space explorer needed to eject an inert object from a cylindrical airlock that was roughly barrel shaped (length >> diameter) at maximum velocity, would they be better suited to position the ...
4
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1answer
117 views

How to calculate the kilowatt hours (kW-h) needed for a solar-electric engine to produce a given delta-v?

A spacecraft is in LEO and I would like to reach a certain point in space; let's say Mars. If I look at the diagram in this answer I see that the delta-v from low Earth orbit to low Mars orbit is ...