General > General Technical Chat
SciFi movies and pathetic misconceptions of tech failing for the story line.
tggzzz:
--- Quote from: AVGresponding on May 04, 2023, 06:41:41 pm ---
--- Quote from: tggzzz on May 03, 2023, 09:45:15 pm ---Jacqueline Pierce embraced and even revealed in the reactions of young males to the character. Sally Knyvette grew to hate her "housewife" character.
Then there's Jan Chappell.
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Not quite sure what you mean by "housewife character". She had great wardrobe, had plenty of attitude, and kicked ass when required?
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https://en.m.wikipedia.org/wiki/Sally_Knyvette#Television_career She later complained of her Blake's 7 role that Jenna had "started off as this really exciting, intergalactic space pirate, but then she became a sort of housewife on the Liberator".
I remember her character becoming boring. But I agree about the, um, wardrobe.
coppercone2:
--- Quote from: David Hess on May 04, 2023, 12:26:01 pm ---
--- Quote from: coppercone2 on May 03, 2023, 11:25:14 pm ---
--- Quote from: David Hess on May 03, 2023, 09:43:22 pm ---
--- Quote from: coppercone2 on May 03, 2023, 08:51:26 pm ---1) did you develop a good power distribution system for the 100 TW reactor on board?
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Even more important than the power distribution and reactor is how did you cool it?
http://www.projectrho.com/public_html/rocket/heatrad.php
And I am quite sure that you are going to make things infinitely worse by insisting on your precious nuclear power reactors and megawatt laser cannons. Human bodies only make enough waste heat to kill everybody, reactors and lasers can make the entire freaking ship glow white-hot and vaporize.
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something quantum radiators
freeze ray related technology. I see the acoustic cooling being inspiration for whatever. Assumes ideal known radiator is highly inefficient antenna with bad VSWR. Because it kind of is, like a jumbled antenna pile or something, it radiates a little slowly and resonates internally or something. If heat is motion like a wave, and its stored, that would imply like a resonator behavior with decay due to leakage from antenna effectsish, like a LC super conductor that radiates at some frequencies.
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Or use a blackbody radiator. The solution does not require handwavium.
The design of Discovery in 2001 originally included radiators, and the mounts were left on the model after the radiators were removed by Kubrick. Niven's and Pournelle's stories sometimes included heat management.
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Eventually you will need a better radiator because its going to look ridiculous because scifi designers don't have the time to do thermal analysis for space x, but I see your point that it should be a more prominent feature.
And I am not sure its pure handwavium, the idea of phonons (not photons, the heat one) and stuff is pretty profound. I think they bring thermal superconductors into play, but its not going to decrease radiator sizes. The reply to this one is interesting about sapphire second sound
https://physics.stackexchange.com/questions/130869/thermal-superconductivity
https://arxiv.org/abs/1211.3633
coppercone2:
Interesting idea for heat control too is to juggle it, like heat up objects to as hot as they get, then jetison them from the ship but keep it on a tether or some how control it, that way you can radiate alot more energy because you have a giant surface area. Like if the enterprize had a deck of cards that got to white hot and then jetison them and make it orbit the ship with a tractor beam.. then at least if there is a material with insane thermal mass, it could be used this way, that the ship enters some kind of cooling state eventually but does not look absurd with the amount of radiators attached to it.
Otherwise, space peacocks.
David Hess:
--- Quote from: coppercone2 on May 04, 2023, 10:53:34 pm ---Eventually you will need a better radiator because its going to look ridiculous because scifi designers don't have the time to do thermal analysis for space x, but I see your point that it should be a more prominent feature.
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Sure they do:
P = A * ε * σ * T4
P = the power of waste heat the radiator can get rid of (watts)
σ = 5.670373×10-8 = Stefan-Boltzmann constant (W m-2K-4)
ε = emissivity of radiator (theoretical maximum is 1.0 for a perfect black body, real world radiator will be less. Should be at least 0.8 or above to be worth-while)
A = area of radiator (m2)
T = temperature of radiator, this assumes temperature of space is zero degrees (degrees K)
x4 = raise x to the fourth power, i.e, x * x * x * x
coppercone2:
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