Spacecraft Definition and 216 Threads

For this problem, The solution for (a) is And (b) is, However, I'm confused by this calculation for (b). I get ##\Delta x = 11.9~c~years## and ##\Delta ct = \frac{c\Delta x}{v} = \frac{11.9 c^2 years}{0.5 c} = \frac{11.9~c~years}{0.5}## Does someone please know why they are missing the...

In discussions about simulating gravity in a spaceship by the use of tethered masses revolving around a common centre, the assumption appears to be that these masses must be equal. Would instabilities occur were this not the case? Or would the problem go away simply by placing the hub at an...

Hello, I want to learn how to design a spacecraft's thermal protection system. But I don't know where to start. Someone can help me?

Suppose a craft derived its energy from fusion— converting Hydrogen into Iron… If it started with a kilo of Hydrogen, how much mass of Iron would it have at the end and how much energy would be extracted?

Suppose in a different star system, a space shuttle sized spacecraft acquired a solar mass energy equivalent amount of kinetic energy, then passed through our solar system. While it was passing through the solar system would the craft’s gravitational effects be more similar to the space shuttle...

Hi, so I have no clue how to solve this problem but I started off by rewriting the issue as a dot product to find the angle. So; cos(θ)= RSC⋅RSun / ∣RSC∣⋅∣RSun∣ Where Rsc = space crafts position vector. Rsun is the Suns position vector. ∣RSC∣ is the length of the spacecrafts position...

Assuming there are four robot inside a stationary spacecraft (mass 2 ton) , robot A has an electric gun that can shoot iron balls weighing 1kg at a speed of 8m/s. These balls collide with red balls at a 45-degree angle in a two-dimensional elastic collision. Each ball has a mass of 1kg. The red...

Astronauts heading towards Mars (and hopefully return) will need protection against the harmful effects of gamma rays in space for this long trip. Apparently, much shorter trips have not caused enough bodily harm to be of much concern. However, a 6-month or longer trip might be a real problem. I...

Astronomers with the ATLAS project also chronicled the event. Short for Asteroid Terrestrial-impact Last Alert System, ATLAS is an asteroid impact early warning system based in Hawaii and funded by NASA. “ATLAS observations of the DART spacecraft at Didymos” exclaimed ATLAS in a tweet. A...

Hi guys, I'm about to start my degree in a few months and I know what field I want to major in but I don't know what track I should take. In the future I want to work with rockets and spacecraft engines, I want to help develop the new generation. Correct me if I'm wrong but it's called a...

An interesting article on some of the history of, and discoveries by, the 44+ year old Voyager spacecraft s. The bean counters originally planned a 4 year mission for Voyagers 1&2. However, the scientists and engineers involved saw a golden opportunity that wouldn't repeat for another 176...

The idea for the mission is that if we built a spacecraft small enough, we could push it with laser(s) to Alpha Centuri within a resonable amount of time, and once there it could send us back images of the star/planets. My question is, would a tiny spacecraft even able to transmit the data...

By "DART will have a relative speed of 6250 ms-1 when it collides with the asteroid", I assume it is the relative speed of the DART with respect to the asteroid. Using that assumption, I can answer question (a) For question (b), I don't understand the solution from the teacher. He did it like...

According to NASA the Space Shuttle required 12 GW to get it off the launch pad. So if a hypothetical rocket at the Second Lagrange Point (where the JWT is heading for right now) was producing the same amount of watts, all other things being equal, how far away in space could this output be...

I made an exercise whose question is like that: A spacecraft moves with speed v at the axis x. There are two target at the axis x, in which the distance between them is L at the ground frame. Suppose that the spacecraft shoot the target simultaneously when it passes by the target. A|so...

Is there a possibility of a celestial body colliding with the Voyager spacecraft ? Is there an alternative to the Voyager that runs faster and faster? For example, at a speed of 100 kilometers per second

Apparently, one of the solar arrays on the Lucy spacecraft failed to fully deploy. https://scitechdaily.com/nasas-lucy-stable-in-cruise-mode-problematic-solar-array-is-75-to-95-deployed/ The fault may not be fatal. They may have enough solar power to complete the mission. At the same time...

The interstellar spacecraft Voyager 1 was launched in 1977 and left the solar system to reach the endless interstellar space in 2012. It is now 2021. Voyager 1 has been sailing in space for 44 years. Why does it still have energy to send electromagnetic signals back to the earth? What does...

Hi, Does anyone by any chance have a link to a blueprint-design for an interplanetary spacecraft , either existing or planned. My reason for asking is I am simulating various aspects of the propulsion and reaction control systems. I would like to use an existing design to model then experiment...

Hi everybody, I would like to share with you a crewed interstellar spacecraft which I have designed and called Solar One. It employs a combination of 3 propulsion methods: nuclear fusion, beam-powered propulsion , and photon propulsion. Basically, several compact fusion reactors power a...

Hi. I'm not expert in physics. Recently I have written an article how a spacecraft will remain in orbit forever. However need review if there is any mistake using formulas or the term escape velocity. Here is it, Layman question: So what will happen if we use sci-fi spacecraft to takeoff...

Could a hybrid airship like spacecraft ever so slowly shed speed using Mars' atmosphere while remaining low orbit while buoyant enough to serve as a glider?

Tell me if I'm right: A) Angular momentum is conserved because there are no external torques. Linear momentum isn't conserved because gravity is acting on the spacecraft . Mechanical energy isn't conserved because it has to change between different orbits. B) Parabolic orbit...

https://www.space.com/nasa-juno-dodges-death-jupiter-polar-storm.html Includes a video.

So what I am really asking is... what is the highest acceleration missile we could make for space that would not crush itself under it's own weight? Assume any engine thrust level is truly possible, we are only limited by material constraints that would crush the missile under the weight of...

Homework Statement: Actually I'm in my last year of Material Engineer, and I have been asked to choose a topic for studying the evolution of the materials involved. With some emphasis on surface. Homework Equations: --- Hey everyone, I'm in my last year of Material Engineer, and I have been...

So I've seen many similar questions like this on the internet, but they all involve using Kepler's law, which is not in my syllabus in my case. However, they do give me the mass of the Sun. which I assume involves gravitational force/field/circular motion? The question also gave me a hint that I...

Reading recently a Russian MOD aerospace journal, i stumbled upon (pretty unrealistic) scheme to hard-land payloads (metal ingots) on moon. It involve catching 1.7 km/s slugs with the pipe filled by regolith or water, and even more hardcore option of digging up the payloads embedded in the...

I've been interested in relativistic spacecraft since news of the Breakthrough Starshot project announcement a few years ago. Breakthrough Starshot's method of laser propulsion still has many technical hurdles needed to be crossed. So I'm wondering what you guys think the first forms of...

Find acceleration vi=20.0 m/s[E] vf= 0 t= 12 s a= ? 0 =20+ a(12) 0-20 = a(12) -20/12=a -1.7m/s2 [E]= a textbook says it's 1.7m/s [W] Is it because when velocity decreases, it increases west (opposite direction)? Is -1.7m [E] same as 1.7m [W]??

Homework Statement Say you're launching a spacecraft of mass m from the surface of the Earth (mass Me and radius re) to a low height h (h is much smaller than r, so h is essentially negligible). How much work is required to move the spaceship from its low orbit to a great distance from earth...

Principle, scheme, images of a flying saucer. Reusable spaceship of the future. Spaceship with a solar sail.

Homework Statement https://i.hizliresim.com/Bzp05M.jpg " spacecraft " Now you're in other space.No gravity at all.You 're going to make your own artifical gravity R = 100m Quest 1-) With which angular velocity, g is equal to 10 (g = 10) 2-)Can you walk from b to a? Why is that 3-)Can you...

How will the NASA spacecraft resist when approaching the Sun?

This probe is designed to fly closer than 4 million miles from the sun's 'surface'. Is it possible in principle to cool the spacecraft 's inner facing surface by transferring heat to a cooler part and then radiating it into space from the far surface? I don't think it is equipped with such tech...

The basic concept is to have your space probe(s) - likely nanocraft [1] on a spinning object in space which allows you to preserve the momentum you give it while accelerating it faster. Then once you are at a speed you can simply release the nanocraft in the direction you want it to go in. More...

Homework Statement The stability of a spinning body may be explored by using equation (3.40), with no torque components present. It will be assumed here that the spin is about the z -axis and has a rate ωZ = S. Homework Equations $$I_{xx}\dot{ω} - (I_{yy}-I_{zz})Sω_y = 0$$ $$I_{yy}\dot{y} -...

https://phys.org/news/2018-03-world-first-air-breathing-electric-thruster.html If it dipped into the atmosphere temporarily on an elliptical orbit, could the air gathered be stored for a long flight? Then maybe get more fuel from another planet's atmosphere or moon for the return trip?

Is it possible to spin a tiny spacecraft to near c speeds, and then have it eject from the object it's spinning on into space? I came with this idea after seeing the Starshot project that involved lasers and thought there might be a better way. What are your thoughts on this? Thanks

Homework Statement If a spacecraft is traveling to a star which is located at a distance of 1 lightyear and it would take the spacecraft 1 year to reach the star in its own frame, how fast would the spacecraft actually fly? Also, how long would the journey take for an observer on Earth...

Homework Statement I need help getting started with this problem At what altitude above the surface of the Moon must a lunar module orbit in order to complete each orbit in 1 h 49 min 39 s? Homework Equations g= Gm/r^2 ? The Attempt at a Solution Not quite sure how to start or anything , any...

The suggestion is a fifth force to counter these anomalies is this generally excepted? arXiv:1711.02875 [pdf, ps, other] Anomalous accelerations in spacecraft flybys of the Earth L. Acedo Comments: 41 pages, 11 figures (Accepted for publication in Astrophysics and Space Science) Subjects...

I've been working on this passion project for a couple of years now and was wondering if you guys have any tips all I can say right now is.Its lunar capable,going to carry 8-10 crew and 2 landers or cargo,reusable,and easily modifiable for Earth orbit operations.

I've always been fascinated with space and space travel and want to see humanity advance in that area. I've always thought the best way for me to contribute is to work in research and development for propulsion systems (which I'm interested in), however, my main passion in physics is...

Hi guys. I'm new to this forum so I'm not sure if I'm posting this in the right place or correctly, but I was totally stumped on a Physics 12 question as I was studying for my exam. The question is: An explorer spacecraft is descending towards Mars using a rocket engine for braking. The...

The spacecraft "Helios 2" (with 100 kg of mass) used the Sun to get a speed of 250.000 km/h using gravitational assistance, I want to know if the mass of the spacecraft influences the result of the speed. I mean, if the spacecraft mass 10.000 tons, the speed would be less of more?

Homework Statement The closest star system is about 4.3 light years away from Earth. A spacetug is able to move a cargo ship at a constant force of g=9.8N/kg times the mass of the cargo ship for many years. Starting from rest, speed up the cargo ship until you're halfway to the nearest stars...

I've been watching "The Expanse" and considered, if the spaceships are some sort of fusion powered drive, why aren't they covered in radiator panels to reject all the heat from the reactor/drive system? How many square meters of radiator panels would a 20MW (thermal) fission reactor require? An...

Homework Statement I am doing a MATLAB simulation for a spacecraft that splits into two near a planet, and one part enters the planet's orbit while the other part avoids the orbit. I am a bit unsure about the physics of the split. Since there is a net force due to gravity, I guess momentum is...

Homework Statement Spacecraft, with vacuum inside, in free-fall, contains a small mass captured against a fully-compressed compression spring against one wall of the craft. Release the spring and mass. Mass is accelerated by recovering spring (elastic potential energy turning to kinetic)...