Questions tagged [spacecraft]

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

Filter by
Sorted by
Tagged with
0
votes
0answers
37 views

Using the Clohessy-Wiltshire equation, what would be the expression for ' r '?

I'm looking for an expression for r. The difficulty I'm facing is simplifying the C-W equation
0
votes
1answer
46 views

When B is directly below A, as shown, what's B’s velocity (in vector notation) relative to A?

Spacecraft A and B are in coplanar circular orbits around the Earth. The orbital radii are as shown in the figure. (Not looking to use C-W equation. Just the equation describing relative velocity ...
1
vote
0answers
33 views

How does china (CASC or CAST) solve Groundsegment?

I was studying Queqiao space mission and I found a lot about how is Tracking, Telemetry and Command or TT&C solved for space component, but not how is secured Space-Ground connectivity - what type ...
1
vote
0answers
99 views

If the ISS went to the moon, what would fail first

If the ISS was propelled into an orbit (any orbit) around the moon, what would fail first?
1
vote
4answers
167 views

Are crewed spacecraft missions that appear stationary from the ground possible?

I've looked at https://en.wikipedia.org/wiki/Spacecraft and the following question arose. For crewed spacecraft missions, can a spacecraft remain stationary in the sky i.e. not moving once launched ...
5
votes
1answer
347 views

When will Voyager 2 overtake Pioneer 10 as the 2nd most distant spacecraft from the Sun?

As of November 2020, Pioneer 10 is the 2nd most distant spacecraft from the Sun and Voyager 2 is the 3rd. However Voyager 2's heliocentric velocity is significantly higher than Pioneer 10 and it seems ...
2
votes
1answer
68 views

How can we express velocity of the Apollo mission relative to a moon-centered reference frame instead of an inertial reference frame?

I am really interested in the Apollo mission and I was wondering how fast did the astronaut pass by relative to the moon. I wanted to compare it with the speed of the car. I have been able to ...
8
votes
1answer
917 views

Are there any accurate velocity plots of all spacecraft that achieved escape velocity from the solar system? (Pioneers, Voyagers, & New Horizons)

The answer to this question provides a seemingly accurate plot of the velocity of Voyager 2 over distance along with the heliocentric escape velocity. Are there similar graphs for the other 4 ...
1
vote
0answers
74 views

Does the door of spaceships such as ISS have locks? [duplicate]

Locks in the sense of keys and locks, not airlocks. Is there any international standards for such locks?
1
vote
2answers
124 views

Soyuz/spacecraft deceleration speed for reentry

I recently saw a program by Prof. Brian Cox (Human Universe Ep.1) where he mentioned that just by using two equations - f=ma and the universal law of gravitation, you could calculate how much a ...
4
votes
4answers
1k views

Quantum technology for starship communications and landing on Mars

Based on practically proven Quantum-Entanglement principle, any entangled quantum switch in this universe can be flipped instantaneously from elsewhere. Can it be used to send information from far off ...
1
vote
1answer
134 views

Could pressurized ionized oxygen be used as a fuel source for an ion thruster?

I am wondering if a canister of pressurized oxygen could be used as a fuel source for an ion thruster. To show how this could work on a conceptual basis, please reference the following drawing: I ...
1
vote
0answers
66 views

Have any satellites been decommissioned because of oxidization?

Comments on Are galvanised steel parts safe to use in space? mention that oxidation happens in the upper atmosphere because of the relatively high presence of oxygen ions. This is apparently to the ...
4
votes
1answer
106 views

Is GNU Radio being used for any Deep Space Missions in development?

GNU Radio is an open source collection of code and tools to build various radio elements for a "Software Defined Radio" or a radio implemented with the help of an FPGA that is programmed to ...
2
votes
0answers
63 views

How do deep-space spacecraft and space stations protect the crew and electronic equipment from radiation during long-duration missions?

Question: How would a deep-space spacecraft protect its crew and electronics from cosmic radiation, solar wind, and solar events? I'm trying to design a hypothetical space station and have been doing ...
9
votes
1answer
186 views

Is there an equivalent of the Dragon 'claw' and Apollo umbilical fairing between the Soyuz crew and service modules?

The Apollo service module provided power etc. to the command module through umbilical connections covered by a fairing. When the two modules were separated, a 'guillotine' cut through the cables and ...
0
votes
1answer
83 views

Can Virgin Galactic's Orbital ship reach ISS

We have all come across theories, concepts proposed missions of orbit tour as a part of space tourism. One such company is Virgin Galactic. I have had read that the SpaceShip2 will have merely 6 mins ...
2
votes
1answer
126 views

Wont any space battle fill up the system with supersonic lethal shrapnel, making space very dangerous?

Any explosion in space might produce very fast moving projectiles, that after getting slingshotted by planets may pick up way more speed. Same might happen with every bullet that misses. They are ...
1
vote
1answer
52 views

How does JWSTs ISIM direct light into its detectors?

I came across this diagram in the JWST User documentation which explains how light is directed into the ISIM (Integrated Scientific Instrument Module): But the ISIM contains four detectors (MIRI, ...
2
votes
3answers
1k views

Why haven’t we landed probes on Neptune, Jupiter, Saturn and Mercury with onboard cameras?

Why haven’t we landed probes on Neptune, Jupiter, Saturn and Mercury with onboard cameras? Voyager 1 and Voyager 2 were sent out in the 70’s, with 70’s technology, is there technology available that ...
2
votes
1answer
78 views

Did the Mars Science Laboratory do any science that wasn't done by Curiosity proper?

This answer to What is the equivalent of Curiosity's “MSL” in the context of Perseverance? What's the official name of the mission? Are the distinctions similar? got me thinking that answers to Where ...
2
votes
1answer
120 views

How to design heatshield bluntness?

How is the bluntness or curvature of a heat shield of a reentry spacecraft designed? If the answer depends on size and mass, consider a deep space sample return "mini capsule" 50 cm in ...
-3
votes
1answer
201 views

Why soviet didn't bring back “laika” to earth & how re-entry logic works?

Was technology not developed that time to do reentry ? When was the first attempt made to re-enter orbit ? How did Soviet successfully did re-entry for Gagarin but not earlier missions ?
0
votes
0answers
56 views

How is it possible to reduce the weight of a high-energy laser?

To provide some context.. I have designed an interstellar spacecraft called Solar One. It employs a combination of 3 propulsion methods: nuclear fusion, beam-powered propulsion , and photon propulsion....
7
votes
2answers
1k views

Sending a camera to space?

I’m trying to get some interesting footage of the earth from space. I’m considering a weather balloon (preferably available online) with helium. I’d rather it be actually on the border of space, 100km ...
-2
votes
1answer
113 views

Orbiting the earth

What is the minimum speed in Km/hour (tangential to earth's surface) required to orbit the earth, at an altitude of 111 Km (well beyond Karman line), where there is no atmospheric drag. Can we achieve ...
9
votes
2answers
619 views

How do space blankets (thermal blankets) work?

On earth, blankets serve to primarily buffer temperature changes / heat transfer that would occur via convection (e.g. a blanket traps air near you so that after your body warms it, it doesn't just ...
-7
votes
1answer
82 views

How did the first astronauts/kosmonauts in the 1940s/1950s *know* that the sky isn't actually a dome with “little dots” (stars)?

This may sound ridiculous, like a joke question, but I'm for real. I've been thinking a lot about things like this, but I always return to this question: Those early "space explorers" who ...
9
votes
1answer
495 views

What were the first Soviet spacecraft to use an internal docking tunnel?

The first crew transfer between space vehicles was from Soyuz 5 to Soyuz 4. It was done outside the spacecraft by Aleksei Yeliseyev and Yevgeny Khrunov. The first U.S. crew transfer was during Apollo ...
2
votes
4answers
298 views

Have space probe gone to unplanned destinations?

Reading this question about multiple gravity assists (Why is Voyager 1 faster than all other space probes?), it caused me to wonder if any probes have been redirected to additional (or alternate) ...
18
votes
2answers
2k views

Which parts of a spacecraft are joined by adhesives?

Where in a spacecraft are adhesives most commonly or routinely used? Are there specific spacecraft components or assemblies that are regularly built by using adhesives rather than other methods of ...
20
votes
3answers
3k views

Is there any way that real stars would move like they do in the classic Windows 3.x screensaver if traveling through space at extreme speed?

In old versions of Windows, such as 3.1, there was this screensaver called "Starfield". It looked like this: However, in movies and TV series, it usually looks like ...
5
votes
1answer
89 views

How does the Bias Momentum Wheel and the Reactive Momentum Wheel differ?

I have done a lot of searches on the types of momentum wheels, but I couldn't find too much answers. What are the differences between a Bias Momentum Wheel and Reactive Momentum Wheel, and what they ...
0
votes
4answers
65 views

Relating Rocket Propellant Selection to Specific Impulse

Is it possible to directly relate a fuel/oxidizer selection to specific impulse at vacuum? I have tried a few different methods, but cannot seem to directly relate the two.
2
votes
2answers
103 views

Using heated water as propellant for a DT-He3 fusion thruster

Not sure if this would be best placed here or in World building SE, but I'll try here. Let's say I have a Dueterium-Helium 3 fusion pulse engine (similar to what is in the Expanse) that will use ...
6
votes
2answers
1k views

Encryption in radio system

We know that radio waves are used in communication with rockets, space crafts and satellites. Now, radio system basically consists of transmitter and receiver. If there is frequency match between ...
17
votes
3answers
4k views

If the Earth spun clockwise, how would that affect Space Exploration?

If viewed from the North Pole, the Earth spins counter-clockwise. Because of this, many satellites also orbit in the same direction as you can take advantage of the Earth's rotation and essentially ...
3
votes
1answer
105 views

Is it possible to create an overridable inflatable airlock seal?

If the information I obtained is correct, inflatable airlocks are sealed by the air pressure and cannot be unlocked unless the pressure is lowered(correct me if I'm wrong). Additionally, airlocks ...
2
votes
1answer
116 views

Could a carbon arc lamp help to propel a spacecraft through interstellar space?

I would like to know, on a theoretical basis, if the electron flow entering into the anode of a carbon arc lamp would impart enough kinetic energy to the anode, and thus to the spacecraft, to help ...
2
votes
1answer
98 views

How are satellite operating modes implemented?

It is pretty simple to find documentation about satellite operating modes behaviour when trying to develop satellite onboard software (example of safe mode behaviour on wikipedia, or on researchgate), ...
5
votes
1answer
139 views

Proposed spacecraft propulsion with particle accelerator

With the new particle acceleration technology of plasma accelerator, electrons or protons can be accelerated to relativistic speed in a device much smaller than current Linac (According to wikipedia, ...
2
votes
0answers
52 views

Aldrin cycler mission to Mars in MATLAB [closed]

I am planning to do a mission project on Aldrin Cycler (Earth to Mars) in MATLAB. Can you please suggest me where to start. I tried reading few research paper related to this topic, any other advice?
3
votes
1answer
129 views

Were there any spacecraft with nitrogen-oxygen atmosphere, but without a system for nitrogen replenishment?

When watching the Vintage Space video Apollo’s Flammable Oxygen Atmosphere Explained, I started to think: was there ever any spacecraft proposed with nitrogen-oxygen atmosphere, but without a system ...
3
votes
1answer
70 views

Is there potential for Trident to visit a KBO like New Horizons did?

After its flyby of Pluto, New Horizons was also able to visit 486958 Arrokoth achieving secondary scientific goals and providing a picture of a KBO snowman. Could Trident potentially also be able to ...
8
votes
1answer
2k views

Are there any photo(s) of International Space Station (ISS) captured from above its altitude? [duplicate]

Are there any attempts made to capture an image of the whole ISS in one take? Or is it not currently practically possible? If Soyuz, SpaceX Dragon, etc. have cameras installed on them, images can be ...
1
vote
1answer
69 views

Would a space rocket launching from Ceres in a path to Jupiter be faster relatively to the sun than one launching from Earth?

Suppose you have a space rocket which when launching from Earth its speed relatively to Earth it's 11 km/s. For what I've read in another topic in Space SE, the orbital velocity of the planet where a ...
-5
votes
1answer
124 views

How to heat up the inside of a metal ball in space

Ok, they say third times the charm. Say you had a metal ball around 30 feet in diameter. At a distance of 143 million miles from the sun and you were trying to heat the air up inside the ball using ...
1
vote
1answer
151 views

How can the download speed increase from space probes?

It always seems to be a genuine question that is How can we download data from far away probes in instant. When New Horizons reached Ultima Thule, it took us quite a few months to have a great picture ...
1
vote
0answers
74 views

Defining overshoot and undershoot boundary of entry corridor

I have been reading up on the mathematic of atmospheric entry. I have found different methods to theoretically calculate the corridor width but I don't understand how to define the overshoot and ...
3
votes
0answers
57 views

What is the proper terminology for the process of a satellite entering a planet's shadow? [closed]

What is the proper terminology for when a satellite or spaceship passes into a planet's shadow or night side? Is it crossing the terminator? Passing into eclipse (or something better)? If there is a ...

1
2 3 4 5
9