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8 votes
9 answers
2k views

Best vehicle for ascending & descending a super deep valley [closed]

I'm creating an inverted version of Earth. All mountains are transformed into valleys with depth equal to their elevation × -1. This means for instance that the Himalayas is now a massive valley that ...
Rhymehouse's user avatar
  • 6,104
-1 votes
1 answer
242 views

In a post collapse world, how long can cars and other vehicles kept usable?(Not considering fuel) [duplicate]

All the other threads are talking only about fuel and not talking about shelf life of spare parts, I already did enough research on fuels (bio diesel, gasifier, ethanol, human waste , refining old ...
Amirabas rashvandi's user avatar
15 votes
5 answers
2k views

With modern technology would it be possible to build an HG Wells style Martian tripod?

With modern technology would it be possible to build an HG Wells style Martian tripod? It should approximate to one of the HG Wells war of the worlds style tripods at roughly 30m high and have a “heat ...
Slarty's user avatar
  • 38.8k
12 votes
10 answers
4k views

Ways to refuel nuclear powered cars

I am working on a story set on a world where cars (or in a broader sense road based vehicles) are the main transport mode (aircraft have never been invented here and most bodies of water are so small ...
Blue Devil's user avatar
  • 1,901
3 votes
2 answers
510 views

How could hovercraft be made an economically viable option for overland transportation?

The level of technology is mostly on par with that of the early 1970s. Hovercraft similar to the SR.N6, Bell Aerospace Voyageur and Lebed are what is available. Other methods of transport are at the ...
OT-64 SKOT's user avatar
  • 5,225
4 votes
1 answer
160 views

What should be the "golden ratio" for lifting on a land glider?

Following the comment suggestions, I changed the question from directly asking for real world examples to this. Context: In this setting, some decades after the 2020's, earth had some climatic ...
Fulano's user avatar
  • 491
24 votes
16 answers
6k views

What single change in history would make rear steering cars a standard?

In my alternate Earth, which follows our timeline almost consistently, I want one of the differences being that the de facto standard for cars is that they have rear steering wheels instead of the ...
L.Dutch's user avatar
  • 306k
8 votes
5 answers
3k views

What's a reasonable timeframe for civilian survivors to learn how to fly a helicopter on their own?

Post-Apocalyptic modern world, a group of civilian survivors about three dozen in number find themselves trapped in a military base. They have no way out except by air. The military base has a dozen ...
Mindwin Remember Monica's user avatar
11 votes
9 answers
4k views

Plausibility of a car running on noble gasses

Is there any science-based way that one could explain cars running not on natural gas (autogas) but rather on noble gasses like Neon, Argon and/or Xenon?
Blue Devil's user avatar
  • 1,901
4 votes
1 answer
221 views

What would realistic racing hovercraft look like in terms of aerodynamics?

This is a follow up to a previous question of mine: How do I keep my futuristic racing hovercraft from becoming airplanes? I'm in planning stages for a futuristic racing game and I'm trying to figure ...
Arvex's user avatar
  • 3,083
18 votes
15 answers
6k views

How do I keep my futuristic racing hovercraft from becoming airplanes?

I'm working on a science fiction racing game that is centered around hovercraft that will race through various environments, both natural and man-made. I'm trying to establish a design language for ...
Arvex's user avatar
  • 3,083
2 votes
1 answer
816 views

Optimal tracks/treads for Desert based tank

This questions sounds fairly simple but i just want to be sure. Imagine if you have an army who's main force comprises Tanks and who have to operate mainly in a desert (think the Great Sand Sea area ...
Blue Devil's user avatar
  • 1,901
9 votes
4 answers
2k views

How feasible and capable is a preindustrial land yacht?

This question is based in the desert world described in this question: Can my civilization be totally isolated by deserts? A pre industrial society is adjacent to deserts and mountains to the East and ...
Slarty's user avatar
  • 38.8k
13 votes
8 answers
6k views

Are there advantages to using a quad-treaded/split tracked system for a vehicle?

All real military ground vehicles use a continuous caterpillar track or tank tread, but quad-treads/split tracks are often seen in sci-fi, with their futuristic tanks and settings. (Halo scorpion, C&...
bluet's user avatar
  • 584
3 votes
10 answers
904 views

self contained fuel source

Is it feasible to have a vehicle powered by fuel that the vehicle produces within its self? This vehicle can be a land vehicle or an air vehicle if you want. It must be capable of transporting at ...
Zeronineseven's user avatar

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