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AlexB23

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Hello folks. You guys know me as the guy who is into sci-fi. What is more interesting (or boring), depending on who you ask, than a space freighter?

So guys and gals, how would you design a space freighter? What would its limitations be, and the purpose of a cargo spaceship? What weapons would the ship have, if any? Would it be more efficient just to have a faster multipurpose spaceship that is a jack-of-all-trades instead of a dedicated, but slow freighter for smaller deliveries?

Background:
In my sci-fi universe, different species use freighters to deliver supplies between star systems that are too energy intensive to materialize, or for species that lack materialization technologies. Some freighters of certain alien species are fast, but the majority of freight ships are slow, as the energy required to bend space around a massive ship increases exponentially. One freighter, built in 2092, the Yanara class ship was built by the Xa'na species. Of course, I do not have any art for a space freight ship, as I suck at drawing, but the Yanara would be a long ship around 650 dist'als long (548 ft long, or 167 m long), have a slender frame in the middle where cargo pods could attach to, a detachable front section for the crew, and a rear section dedicated to propulsion. The Yanara is modular, so if any part (such as the graviton displacement drive) needs replacement, the ship can be taken apart, just as building cranes on Earth can be taken apart, or made taller.

Speed:
The Yanara is a slow freighter, as faster graviton drive technology was lost in the 2070s on Xanadu due to a ban on interstellar travel placed in 2065, just three short years after faster-than-light (FTL) interstellar travel was invented. This ban was put in place as a rogue robotic spaceprobe made by the Xa'na themselves in late 2062 decided to turn on their creators in the mid-2060s. The freighter could skirt this faster-than-light ban, as it was built in 2092 for the sole purpose of placing scanners and infrastructure in the outer Hesal system. These scanners could scan for the rogue probe's army of other probes, as the rogue probe was capable of limited self-replication. As long as the freighter stays within a two light-year boundary from Hesal, the ship can use FTL travel, provided the maximum speed is limited to discourage interstellar travel.

Yanara specs:

About Xanadu (Hesal III):
This is the Xa'na homeworld, Hesal III, more commonly known as Xanadu. It is an earth-like planet located 3 quadrillion miles (4.8 quadrillion km, or 507 light-years) from Earth in the constellation of Cancer, and has an orbital period around its host star, Hesal, in roughly 363.9 earth-days (almost 366-367 Xanadu days). It is only 200 miles smaller than Earth, and slightly cooler by a degree or two.

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Diamond72

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So guys and gals, how would you design a space freighter?
I think the talk about Mars is they want to harvest the rare elements in the astorids. Some of those elements are worth a million dollars an ounce. My son die work for NASA to build a robotic core sample. He even went to washington to show what they were working on to help secure funding.

The SpaceX Falcon Heavy is one of the most powerful rockets in operation today. It can carry a payload of 63,800 kg (140,660 lbs) to low Earth orbit (LEO) and 26,700 kg (58,860 lbs) to geostationary transfer orbit (GTO). This means it can launch multiple satellites in a single mission, depending on their combined weight.
 
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AlexB23

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I think the talk about Mars is they want to harvest the rare elements in the astorids. Some of those elements are worth a million dollars an ounce. My son did work for NASA to build a robotic core sample. He even went to washington to show what they were working on to help secure funding.

The SpaceX Falcon Heavy is one of the most powerful rockets in operation today. It can carry a payload of 63,800 kg (140,660 lbs) to low Earth orbit (LEO) and 26,700 kg (58,860 lbs) to geostationary transfer orbit (GTO). This means it can launch multiple satellites in a single mission, depending on their combined weight.
Mars could be a good idea to be a gateway to the asteroid belt. Then, one could send robotic probes to asteroids to start mining. The issue with asteroid mining is that only the rich would get the profits, not the poor or middle class. Also, congrats to your son for engineering a robotic core sample.

Sci-fi freighter for Xanadu:
In my sci-fi plot, asteroid mining is not common, as rare elements can be manufactured on demand since the 2040s, as the Xa'na race developed a machine to print items at an atomic level. The Molecular Additive Manufacturing Unit (MAMU) technology invented in 2041 can rearrange molecules and turn thin air into anything for free (rendering the planet's system of currency obsolete), such as food, tools, or medicine, or even heal cancers. The machine works by using miniature electromagnetic tractor beams to latch onto protons and atoms. This comes at an energy cost, as the MAMU uses about 150-400 kWh of electricity per kilogram of matter materialized or transformed.

However, for transporting items, it makes more sense to use a freighter, as freighters use less energy per kilogram when fully laden with cargo compared to manufacturing items on demand with the MAMU. New generations of MAMU in the later part of the 21st century and all of the 22nd century and beyond are more efficient, but newer faster-than-light systems on more advanced freighters are still the most efficient way of transporting goods between regions of the Hesal star system.

Realistic space freighter for Earth: If I were to design a space freighter that is realistic, it would be slower than light (cos FTL does not exist in real life). It would be about the size of Musk's Starship, and be situated on the moon. That means, it could weigh 6x less, and be able to launch more cargo. Factories could be built on the moon that could manufacture goods, and then the freighter could deliver those goods to Mars. A journey to Mars would take 7 months or so. Yes, that is a lot slower than my sci-fi freighter (which could do the same distance journey in minutes, plus an hour or so to keep to slower-than-light speed limits near planets), but a lot more feasible. Finally, the freighter could be remotely operated by a team of scientists on Earth, or operated using a rudimentary form of artificial intelligence.
 
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Diamond72

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Also, congrats to your son for engineering a robotic core sample.
It is really amazing what he is a part of. He is really on the cutting edge. He was working on a factory that will build nano resisters for the electronics in cars.

Wolfspeed, Inc. is a company that develops and manufactures wide-bandgap semiconductors, primarily focusing on silicon carbide (SiC) and gallium nitride (GaN) materials and devices1. These semiconductors are used in various applications, including transportation, power supplies, power inverters, and wireless systems.

There was no way I could help him with his homework when he was in school. It was all formulas and I am a lot more into physics and geometry.

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AlexB23

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It is really amazing what he is a part of. He is really on the cutting edge. He was working on a factory that will build nano resisters for the electronics in cars.

Wolfspeed, Inc. is a company that develops and manufactures wide-bandgap semiconductors, primarily focusing on silicon carbide (SiC) and gallium nitride (GaN) materials and devices1. These semiconductors are used in various applications, including transportation, power supplies, power inverters, and wireless systems.

There was no way I could help him with his homework when he was in school. It was all formulas and I am a lot more into physics and geometry.

View attachment 356186
Cool stuff. But alien space freighters are more interesting. :)

The space freighter Yanara in my sci-fi universe uses hydrogen fusion technology, much more powerful compared to a battery. Energy storage for the ship's onboard laser weapon is provided by a graphene supercapacitor, however the laser is pretty weak for 2090s standards, at only 10 megawatts continuous power, or a 50 MW burst. The graviton displacement drive has a power rating around a few hundred megawatts to maintain speeds of 5.9 billion mph. For reference, if the Yanara was placed in our solar system, it would take 62 seconds to get from Earth to Mars. The Yanara could sprint for 20 minutes at a maximum speed of 8.4 billion mph, which if placed in our solar system, would take 43 seconds to get from Earth to Mars.

Dangerous levels of muon particles would destabilize the graviton displacement drive at high speeds, causing the ship to drop to sublight speeds during the best case scenario, or the ship gets ripped apart by unbalanced gravitational forces at the worst.

For reference, it takes light 9 minutes to go from Earth to Mars at the current distance of 101.6 million miles (163.5 million km)

Calculation:
 
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AlexB23

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So, @rockytopva , what are your thoughts on sci-fi spaceships, and my concept for a space freighter for an alien race? We both like space.

Does the space freighter concept make sense, or is it too slow? Six billion miles per hour is a bit slow (almost 10 times the speed of light, cos fiction), but the speed seems reasonable for a space freighter when the alien civilization recovered from a technological slowdown in the 2070s. Perfect for setting up sensor arrays in the outer parts of the Hesal system (where the sci-fi plot is set up).

The freighter is not designed for interstellar travel, but is designed for travel in the Oort Cloud (the outer region of comets) of the system to place sensor arrays that could be used to detect incoming vessels from other star systems.
 
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Diamond72

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The space freighter Yanara in my sci-fi universe uses hydrogen fusion technology

Tesla Unveils Plan For First Hydrogen-Powered Vehicle, Model H By 2026.


We have a saying that the true test is when the rubber meets the road. We have the leading Polymer Science College at the university here. Which is essential if you want to develop hydrogen fusion technology.

People like Neil Degrasse looks at Science Fiction to see if it is based on true science or not.
 
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AlexB23

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Tesla Unveils Plan For First Hydrogen-Powered Vehicle, Model H By 2026.


We have a saying that the true test is when the rubber meets the road. We have the leading Polymer Science College at the university here. Which is essential if you want to develop hydrogen fusion technology.

People like Neil Degrasse looks at Science Fiction to see if it is based on true science or not.
I like realistic sci-fi also. Hydrogen fuel cells will be used in my sci-fi as well, during the late 20th century plot, but will also be used in the late 21st century on space stations that lack fusion power. Just like in real life, we still use coal (old technology) in 2024 in places where renewables are hard to come by, it would be expected that futuristic space stations in my sci-fi plot would still use old technology as well when new tech is hard to come by. I have been wondering when Tesla will release a hydrogen car, so I am glad that Tesla will finally do this. Hopefully, the car stays in one piece and does not rust.
 
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Diamond72

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The Yanara could sprint for 20 minutes at a maximum speed of 8.4 billion mph
You can not go faster than the speed of light. According to Einstein's theory of relativity, the speed of light is the universal speed limit. As an object's speed approaches the speed of light, its mass effectively becomes infinite, making it require infinite energy to accelerate further. So yeah, we're stuck with warp speeds only in sci-fi for now.
 
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AlexB23

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You can not go faster than the speed of light. According to Einstein's theory of relativity, the speed of light is the universal speed limit. As an object's speed approaches the speed of light, its mass effectively becomes infinite, making it require infinite energy to accelerate further. So yeah, we're stuck with warp speeds only in sci-fi for now.
That is true, the speed of light is an impossible barrier to break, even particles inside of an accelerator travel a fraction slower than light. The sci-fi plot will stick to realism for the most part, except for faster-than-light travel. FTL is used to get the plot going. :)

Remember the adage, ships travel at the speed of plot? Same will happen in my sci-fi plot.
 
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AlexB23

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I would build it with an open top, much like the Earth, and have the Sun as it's thrusters.
I would attach other planets to the thruster, and have all the elements in abundance.
That sounds like a cool concept for your freighter. Sounds like a solar sail, with maybe four or so large spheres around 10 to 50 meters across attached to the craft. It would be slow to accelerate, as solar sails are slow, but eventually your spacecraft could make it to a few fractions of the speed of light.

Mine is like hundreds of times faster bro. :)
 
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That sounds like a cool concept for your freighter. Sounds like a solar sail, with maybe four or so large spheres around 10 to 50 meters across attached to the craft. It would be slow to accelerate, as solar sails are slow, but eventually your spacecraft could make it to a few fractions of the speed of light.

Mine is like hundreds of times faster bro. :)
Now there was a turtle and a rabbit...
 
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AlexB23

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Now there was a turtle and a rabbit...
Yep, and the turtle won. Solar sails are much more reliable compared to my freighter. In fact, for the sake of the plot, the freighter only lasts around 40 years, and over those four decades, the fusion reactor had to be replaced, and the graviton displacement drive needed to be fixed.

Solar sails do not require any onboard energy source for propulsion, so your ship wins the reliability contest. Your sci-fi ship is powered by a star in space, while my sci-fi ship is powered by hot plasma inside of a reactor. I'd trust the solar sail over some hot plasma inside of metal.
 
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Diamond72

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the speed of light is an impossible barrier to break
That is why Sagan in his book and movie with Jody Foster uses worm holes.

With quantum entanglement and quantum teleportation we can be there in less than an instant. With your freighter you could carry a payload that could be worth a lot of money. Asteroid mining is a concept that's gaining traction as technology advances. Some asteroids contain significant amounts of rare earth elements, including neodymium. Extracting these elements from asteroids could help meet the growing demand for materials used in high-tech applications like electric vehicles and wind turbines.

SpaceX is developing the Starship spacecraft and Super Heavy rocket, which are designed to be fully reusable and capable of carrying both crew and cargo to Earth orbit, the Moon, Mars, and beyond.

Are there any aliens in this story or just the space ship itself? In the movie "Contact," Jodie Foster's character, Dr. Ellie Arroway, makes contact with an advanced extraterrestrial civilization. The aliens she encounters are highly intelligent and technologically advanced, and they communicate with her through a series of complex messages and a journey through a wormhole.

The film, based on Carl Sagan's novel, explores themes of science, faith, and the search for meaning in the universe. It's a fascinating story that delves into the possibility of life beyond Earth.

Projects like NASA's Kepler mission and the Transiting Exoplanet Survey Satellite (TESS) have identified thousands of exoplanets, some of which lie in the habitable zones of their stars, where conditions might be right for life. Additionally, the Search for Extraterrestrial Intelligence (SETI) is actively scanning the cosmos for signals from intelligent civilizations.
 
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rockytopva

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@AlexB23 - My thoughts on spaceships... The first question God asked Job out of the whirlwind was... Where was thou when I laid the foundations of the earth? Out of the land came places to make our existence. If man were to travel from planet earth he would miss all the benefits that came out of the earth's crust. Including all the elements that have been placed there for our benefit.
 
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If man were to travel from planet earth he would miss all the benefits that came out of the earth's crust. Including all the elements that have been placed there for our benefit.
The size of the sun, the distance of the earth from the sun and our dance with the moon does make the Earth Unique. But it is possible for there to me many Earth like Planets in the solar system.

Different planets can have varying compositions based on their formation and the materials available in their part of the solar system. For instance, Earth is rich in iron, oxygen, silicon, and magnesium, while gas giants like Jupiter and Saturn are mostly hydrogen and helium. Then there are rocky planets like Mars with a high iron oxide content, giving it its reddish hue.
 
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AlexB23

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That is why Sagan in his book and movie with Jody Foster uses worm holes.

With quantum entanglement and quantum teleportation we can be there in less than an instant. With your freighter you could carry a payload that could be worth a lot of money. Asteroid mining is a concept that's gaining traction as technology advances. Some asteroids contain significant amounts of rare earth elements, including neodymium. Extracting these elements from asteroids could help meet the growing demand for materials used in high-tech applications like electric vehicles and wind turbines.

SpaceX is developing the Starship spacecraft and Super Heavy rocket, which are designed to be fully reusable and capable of carrying both crew and cargo to Earth orbit, the Moon, Mars, and beyond.

Are there any aliens in this story or just the space ship itself? In the movie "Contact," Jodie Foster's character, Dr. Ellie Arroway, makes contact with an advanced extraterrestrial civilization. The aliens she encounters are highly intelligent and technologically advanced, and they communicate with her through a series of complex messages and a journey through a wormhole.

The film, based on Carl Sagan's novel, explores themes of science, faith, and the search for meaning in the universe. It's a fascinating story that delves into the possibility of life beyond Earth.

Projects like NASA's Kepler mission and the Transiting Exoplanet Survey Satellite (TESS) have identified thousands of exoplanets, some of which lie in the habitable zones of their stars, where conditions might be right for life. Additionally, the Search for Extraterrestrial Intelligence (SETI) is actively scanning the cosmos for signals from intelligent civilizations.
Yeah, there are aliens in my plot. They created the ship, and the ship can have a crew of a few dozen. The Xa'na race are gray skinned hominoids who live on Xanadu (Hesal III), roughly 5'8" (172 cm) tall who are eager to explore. The Xa'na race made first contact with the Hesalians (who live on the 4th planet in the Hesal system, Hesalia or Hesal IV) when the Hesalians had to escape Hesalia to Xanadu around 14,000 BC.

There are other alien races from outside the Hesal system as well, but the Xa'na do not routinely travel to alien systems until the early 23rd century.
 
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AlexB23

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@AlexB23 - My thoughts on spaceships... The first question God asked Job out of the whirlwind was... Where was thou when I laid the foundations of the earth? Out of the land came places to make our existence. If man were to travel from planet earth he would miss all the benefits that came out of the earth's crust. Including all the elements that have been placed there for our benefit.
Agreed. I would miss being on the crust of our Earth as well, unless I bring the elements with me. Even then, people or even the Xa'na in my sci-fi plot would get space weary, and would want to return home. God asked Job a valid question.

How long would you think it would take a human to get space weary, or homesick? For me, probably after a few weeks up in space. For the Xa'na, probably a few months, or whatever time system they use on their planet.
 
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