Major TV/movie franchises hardly constitute the bulk of sci-fi and none of the ones you have listed are hard sci-fi.
Actually, what I've listed does basically constitute the bulk of sci-fi in terms of the most popular series that have been developed into TV/movies. You can't just ignore what is basically the majority of the genre by arbitrarily deciding to exclude TV/movies. Almost all of the most widely known and popular settings use some type of FTL drive and so do the vast majority of lesser-known series.
I also disagree about none of them being "hard" sci-fi settings, both Aliens and BSG have basically defined the modern version of the hard sci-fi genre thematically and visually, to the point that the Expanse clearly draws heavily from both settings in terms of visuals and themes.
I'm almost positive a ship heats up at the same rate when in proximity to a star irrespective of fuel scooping.
Fuel scooping dramatically increases your heat to the point that I have disabled my fuel scoop when necessary to stop myself from overheating near a star. Being near a star usually has a minimal effect on your base heat at idle but significantly affects your ability to dissipate heat when you use other modules. If you have ever been interdicted while fuel scooping and drop out near the star you'll find your weapons and other systems will overheat your ship MUCH faster then they will in deep space.
It's not the temperature of the gas in contact with the ship that causes heating...that's far too diffuse..it's the radiaton from the star.
No, it's not radiation from the star, you ship doesn't absorb high-energy gamma radiation and heat up from it. In fact your shields and hull have no problem being next to a star in terms of handling the temperatures. The outside of your ship is insulated from the inside of your ship VERY effectively otherwise you couldn't enter a star's corona which can reach millions of degrees kelvin. The issue with your ship's heat dissipation near a star is that the temperature gradient between your ship's heat radiators and the surrounding space is much higher in deep space then it is in proximity to a star which means you can't dissipate the internal heat from your ship as effectively.
That heat has to go somewhere. Radiation, especially at low temperatures, is only going to remove heat very slowly...this is why the ship's radiators glow white hot as out ships approach their limits.
Heat radiators on Elite ships use some type of coolant loop to bring heat from the ship's interior to the exterior of the ship so it can be dissipated via. the heat radiator vents. That is also why heat sinks work, they take overheated coolant and flush it into the heat sink to eject it, replacing it with "cool" coolant which is put back into the coolant loop. That is why heat sinks have limited ammo, you are basically ejecting coolant each time you fire one of them.
I would very much expect the skin of the ship to be actively cooled via the same system that cools everything else.
The ship's hull serves as an insulator and is not thermally connected to the ship's reactor or internal modules EXCEPT via. the ship's radiator vents when they are actively dissipating internal heat. The ship is otherwise a closed system and can ONLY dissipate heat via the heat radiators, otherwise going into silent running wouldn't really do anything to reduce your thermal signature.
And the third person gunner camera is just a computer game in the Elite universe constructed on the fly from sensor telemetry.
Except it isn't. It's a god-mode perspective that is not consistent with ANY of the existing sensor technology in Elite.
Otherwise why can't I use that same system to fly my ship, or dock or land on a planet?
I read your post. I think one of many flaws in your argument is equating a parking camera in an upper-mid range sedan with the best we can do.
It is the best we can do when it comes to parking. It is not useful for combat or weapons on military vehicles which, as I mentioned above, are controlled remotely via. specific camera feeds.
The problem that a lot of people seem to be missing here is that parking a car with a highly distorted surround-view camera system is completely different from firing a weapon accurately.
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