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Posts tagged vehicles

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Q&A What is the best form of powered vehicular flight within a McKendree habitat?

Background A McKendree cylinder is a spinning space habitat in the style of an O'Neill cylinder (below), but orders of magnitude larger. McKendree habitats are hundreds of kilometres in diameter a...

3 answers  ·  posted 2y ago by rek‭  ·  last activity 2y ago by rek‭

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Q&A Are there *plausible* planetary conditions where jet aircraft just don't have much advantage over propeller-driven aircraft?

I've seen Which is easier to develop: a piston prop engine or a jet engine? and my own Effects of ~10atm pressure on engine design neither of which answers this. Would different atmospheric densit...

2 answers  ·  posted 2y ago by Tristan Klassen‭  ·  last activity 2y ago by Tristan Klassen‭

Question atmosphere vehicles
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Q&A What might be an effective mode of transportation for Giants?

In my story Giants, humans, and a bunch of other fantasy races live along side each other and i'm curious as to what might be an effective mode of transportation for 10 foot tall Giants with Ancien...

2 answers  ·  posted 2y ago by icewar1908‭  ·  last activity 2y ago by icewar1908‭

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Q&A How would you design Turn-Signals on a Flying Car?

When designing a flying car intended for congested city routes with slow traffic, should turn signals indicate all possible directions. In most sci-fi, I've seen designs that have no turn-signals o...

4 answers  ·  posted 2y ago by Woodlum Hoodlum‭  ·  last activity 2y ago by Woodlum Hoodlum‭

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Q&A A "time capsule" that can last for trillions of years?

The universe is dying because it has exhausted nearly all of its resources. Humans became the last species in the universe because of their resilience and sheer willpower. And yet, humanity still...

5 answers  ·  posted 2y ago by In the name of the story‭  ·  last activity 2y ago by In the name of the story‭

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Q&A An entire aircraft carrier group utilizing the ground effect?

I've heard there was no upper limit for the size and weight of a ground effect vehicle. In my world, the people there wanted to design a quick response aircraft carrier that could reach anywhere...

2 answers  ·  posted 3y ago by In the name of the story‭  ·  last activity 3y ago by In the name of the story‭

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Q&A Would trams be workable on a low-gravity world?

After reading this thread from a bit under a year and a half ago about the most cost-effective means of travel on Mars, where one of the answers mentions rail as the best option, I started wonderin...

8 answers  ·  posted 4y ago by Sean‭  ·  last activity 3y ago by Sean‭

Question gravity vehicles
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Q&A Navigating a sea of sulfur hexafluoride

Sulfur hexafluoride is pretty awesome. It is a gas six times denser than regular air, and thus you can actually make tinfoil "boats" float on it. It also makes your voice deep when you breathe it i...

3 answers  ·  posted 3y ago by KeizerHarm‭  ·  last activity 3y ago by KeizerHarm‭

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Q&A Perfect centrifuge crew quarters for a interstellar spaceship?

I want to design a realistic interstellar spaceship that uses centrifugal force for only the crew quarters. But while looking up for designs I found the most common ones are the torus or ring desig...

4 answers  ·  posted 3y ago by Borbman‭  ·  last activity 3y ago by Borbman‭

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Q&A Designing a biological drop pod?

How would a biological drop pod make it into the atmosphere and land safely? I have a race of aliens that use biological tools instead of technology. Their ships are living beings that can travel t...

3 answers  ·  posted 3y ago by System‭  ·  last activity 3y ago by System‭

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Q&A What control method would make controlling a giant humanoid robot ridiculously easy for a complete novice?

So I have in mind a plot point in mind where my protagonist is elected to pilot a giant humanoid robot with flight capabilities - Kinda like a mobile suit from the Mobile Suit Gundam franchise. To ...

11 answers  ·  posted 5y ago by McOwen‭  ·  last activity 3y ago by McOwen‭

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Q&A Could a vehicle levitate through use of ultrasonic sound waves?

This is a bit of a continuation of my previous question, could a form of acoustic levitation be used as artificial gravity? In that question, I referenced how some scientists use acoustic levitat...

2 answers  ·  posted 3y ago by Cobbington‭  ·  last activity 3y ago by Cobbington‭

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Q&A What kind of protection system could be used against railguns?

What kind of system using modern technology would be able to counter a railgun projectile on a vehicle (both land and sea)? Would a think slab of angled armour in the shape of "&lt;" work to cover ...

6 answers  ·  posted 6y ago by SMS von der Tann‭  ·  last activity 3y ago by SMS von der Tann‭

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Q&A How to make vehicular combat viable in a Post Apocalyptic world?

I want to create a Mad-Max-esque post apocalyptic setting. Unfortunately after a bit of looking into this, there is one massive issue with the idea of lots of maniacs tearing across the barren lan...

14 answers  ·  posted 3y ago by Jimmery‭  ·  last activity 3y ago by Jimmery‭

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Q&A Consequences of Earth-like planet with denser atmosphere

Assumptions - atmospheric pressure is 3 atm, but partial pressure of oxygen is comparable to earth, the rest is mostly nitrogen. Planet is tidally locked and insignificantly heavier. (for simplicit...

2 answers  ·  posted 6y ago by Shadow1024‭  ·  last activity 3y ago by Shadow1024‭

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Q&A Would this "self driving" car work?

The great venture capitalist Elian Minsk has decided to start an "autonomous" car driving service. But who needs complicated AI based systems when he can hire tech support workers in India to driv...

5 answers  ·  posted 3y ago by user4574‭  ·  last activity 3y ago by user4574‭

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Q&A Effects of ~10atm pressure on engine design

Take a planet with an atmosphere similar to Earth's but, say, 9-10x as dense. What is this going to mean for the performance and design of the heat engines that are so familiar to us? Higher oxygen...

3 answers  ·  posted 3y ago by Tristan Klassen‭  ·  last activity 3y ago by Tristan Klassen‭

Question atmosphere vehicles
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Q&A Car headlights in a world without electricity

In a world like ours in the 1980s, but which for whatever reason does not use any form of electricity. (Either it does not exist or batteries and generators etc have not been invented.) For purpos...

8 answers  ·  posted 3y ago by lijat‭  ·  last activity 3y ago by lijat‭

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Q&A Propulsion Systems

In my world, 500 years in the future, my population fits anti-gravity engines to salvaged boats as a form of transport. These transports fly close to the Earth's surface and are powered by a highly...

4 answers  ·  posted 3y ago by Lucas A.‭  ·  last activity 3y ago by Lucas A.‭

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Q&A Can you create a living vehicle fueled by organic material?

In this world, the vehicles are effectively re-engineered insects; enlarged bio-manufactured nervous systems used instead of engines; factory grown lightweight chassis / [wheels]. The fuel station ...

4 answers  ·  posted 3y ago by Aloysius Anise‭  ·  last activity 3y ago by Aloysius Anise‭

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Q&A Bicycles/human-powered vehicles on low gravity planets/moons?

In this scenario, humanity has managed to colonise some of the solar system, including Mars, some of the moons of Saturn and Jupiter and some of the larger asteroids of the belt. In most places th...

2 answers  ·  posted 4y ago by L Mason‭  ·  last activity 4y ago by L Mason‭

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Q&A Designing vehicles for different gravities

In my story, humans have colonized both a high-G and a low-G world in the same star system. How would surface vehicles have to be designed differently for practicality and economy on each of those...

5 answers  ·  posted 4y ago by Rich Durst‭  ·  last activity 4y ago by Rich Durst‭

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Q&A Would EMP From a Nuke Stall a car?

In my story a man who works in Military Intel gets early warning that a nuclear attack on his base is inbound. He abandons his post, grabs his wife and kid from on base housing, and books it out of...

4 answers  ·  posted 4y ago by TCAT117‭  ·  last activity 4y ago by TCAT117‭

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Q&A Feasibility of electrically heated steam engine

I was looking into the Dobles of years past after watching videos of Jay Leno's Doble E-20 and was trying to imagine how one could make the steam car a viable competitor to EVs and obviously one of...

6 answers  ·  posted 4y ago by Blake‭  ·  last activity 4y ago by Blake‭

Question steampunk vehicles
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Q&A Sailing without wind, but with strong currents

Context On my world, there is a lot of water: sea, oceans, ... There are also firm land and islands, so it's interesting to travel on the water. The problem is that there is NO wind at all, and lo...

9 answers  ·  posted 4y ago by Legisey‭  ·  last activity 4y ago by Legisey‭

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Q&A How to make my motorcycle rider survive driving into a wall?

Question I am currently trying to create a dramatic introduction for one of my characters, John Smith. The current iteration of the idea has him suddenly colliding with a solid wall on a motorbike...

5 answers  ·  posted 4y ago by Frederick Twyford‭  ·  last activity 4y ago by Frederick Twyford‭

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Q&A What is the viability of trains on planets covered in water?

I want to write a science fiction book on a planet mostly covered by ocean, but I also want to incorporate trains into my story. However, it seems that with advances in ship and plane technology, t...

17 answers  ·  posted 4y ago by Evren Yungjello‭  ·  last activity 4y ago by Evren Yungjello‭

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Q&A How practical is the sandcrawler as a vehicle?

A sandcrawler is is a tracked vehicle about 40 meters long, 20 meters tall, and 15 meters wide. It has a thick outer hull for protection from the elements. It has eight sets of tracks, four abreast...

2 answers  ·  posted 5y ago by Robbie‭  ·  last activity 5y ago by Robbie‭

Question vehicles
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Q&A How can I get my DeLorean to 88 miles per hour without a train?

I got pulled into 1885, just like Doc and Marty (Or I'm one of them, assuming I can get IP rights :)). I need to go back to the future, which means that I need to get my Ford Pinto time machine up ...

12 answers  ·  posted 7y ago by DVK‭  ·  last activity 5y ago by DVK‭

Question physics vehicles
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Q&A How much of a modern day tank can the 14th century replicate?

If a modern Day tank suddenly appears in 14th century Constantinople; in perfect condition, along with all the ammo, fuel, and components needed for it to run. How much of the technology in the tan...

9 answers  ·  posted 5y ago by Mr.J‭  ·  last activity 5y ago by Mr.J‭

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Q&A How can I make a jetpack with supercooling?

So let's say I have a super cooling "battery" basically a brick that cools anything that touches one end of it to ~0k. Now, using handwavium I can thermally isolate it so that it doesn't just cool ...

4 answers  ·  posted 5y ago by Devon Muraoka‭  ·  last activity 5y ago by Devon Muraoka‭

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Q&A Landships on a Snowball Earth?

I've been playing a lot of Deserts of Kharak lately, and I am wondering if landships depicted in game, which are essentially seagoing ships on tracks, would work in a Snowball Earth scenario. By Sn...

2 answers  ·  posted 5y ago by Zhehao Chen‭  ·  last activity 5y ago by Zhehao Chen‭

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Q&A What would be a super fuel for methanol fuel dominating setting?

Tech level - comparable to contemporary; no fossil fuels, all fuel has to be produced synthetically, as simplest to produce (and store!!!) was selected methanol. Theoretically quite good - superio...

2 answers  ·  posted 6y ago by Shadow1024‭  ·  last activity 6y ago by Shadow1024‭

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Q&A Speed of vehicles built by humanoid giants

Let's imagine a race of Giants, with an average height three times that of a normal human being. Let's also imagine that these Giants are completely identical to humans, proportionately speaking......

3 answers  ·  posted 6y ago by Pedro Gabriel‭  ·  last activity 6y ago by Pedro Gabriel‭

Question physics vehicles
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Q&A Could a photonic engine actually work?

I have a very specific aesthetic in mind for my science-fantasy setting, technology is largely pneumatipunk supplemented with weired phonotic devices;for "reason" there are few electrical devices i...

2 answers  ·  posted 6y ago by Trismegistus‭  ·  last activity 6y ago by Trismegistus‭

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Q&A A radar-invisible stealth car?

It's common knowledge that one of the things that makes stealth aircraft so stealthy is that the body is covered in a skin of special material that interferes with radar. Would it be theoretically...

6 answers  ·  posted 6y ago by Mason Wheeler‭  ·  last activity 6y ago by Mason Wheeler‭