ottd death battle

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Re: ottd death battle

Post by oaky on January 1st 2017, 7:14 pm

no sorry lad even if you somehow cram a full 1000 L or a full cubic meter of H2 inside that tiny ass dragon you get a whopping 90 grams of hydrogen gas to work with

it makes no sense your fantasy dragons all starve to death because they cant fly
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Re: ottd death battle

Post by oaky on January 1st 2017, 7:27 pm

Flamcastro wrote:
oaky wrote:no sorry lad even if you somehow cram a full 1000 L or a full cubic meter of H2 inside that tiny ass dragon you get a whopping 90 grams of hydrogen gas to work with

it makes no sense your fantasy dragons all starve to death because they cant fly
at stp, it's higher pressure. and hydrogen has a lot of energy anyway, definitely enough for liftoff
all my calculations are done at STP and if its inside a living thing it will require an even greater volume unless your dragons' bodies are ice cold

and you cant fit anything close to 1000 liters inside a 200kg creature - if you give a reasonable density of 1200kg/m3 (humans are 985) then you only have 167 liters of total body volume - if you can even fit 25 liters of hydrogen inside you only have 2.25 grams of hydrogen which is barely more than a mole of gas

you mention burning the wing but shit aint happening to that dragon at all - the heat capacity of human skin is 3.4 kJ/kg/kelvin and the enthalpy of combustion of H2 is 286kJ per mole so the ~322kJ of heat produced by the entire supply of gas applied to 1kg of wing tissue will only raise the temperature by a toasty 9.5 degrees celsius - what power your dragons have
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Re: ottd death battle

Post by Mac B on January 1st 2017, 7:48 pm

bc they are attafhed to the body
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Re: ottd death battle

Post by oaky on January 1st 2017, 7:55 pm

Flamcastro wrote:i don't get it, why can't the bladders be higher density than the body?
if you have a 200kg object and it has an average density of 1200kg/m3 (which is very high for something organic) then you only have a finite volume as calculated for the ENTIRE creature

the only way to cram in more volume into your bladder is to compress the hydrogen - how do you do that? compressed gaseous hydrogen is kept at 5-10 ksi in a container made of metal or high strength composites (woven aramid/carbon fiber or a metal matrix composite made of steel and these materials)

lets say your dragon can pressurize its bladder somehow to an impressive 30 PSI (equivalent to a car tire - plenty of pressure) - this is equivalent to 2 bar of pressure which makes effectively zero difference to the density of hydrogen gas
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Re: ottd death battle

Post by george lucas on January 1st 2017, 7:55 pm

so FD i also have a dragon race they fart xenon gas out at supersonic speeds to propel themselves into the sun
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Re: ottd death battle

Post by oaky on January 1st 2017, 8:26 pm

Flamcastro wrote:btw gas propulsion isn't completely stupid i don't remember exactly where but i know something has a dragon that flies using methane (which of course flying on just methane is retarded)
do you think that anything involving a dragon is gonna be scientifically accurate
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Re: ottd death battle

Post by professional crybaby on January 1st 2017, 8:26 pm

Flamcastro wrote:
WOW FD NICE MEME GOTTA SMASH THAT FUKKEN LIKE BUTTON XDD
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Re: ottd death battle

Post by professional crybaby on January 1st 2017, 8:32 pm

Flamcastro wrote:also that's what i'm aiming for with QB i researched all the quantum crap in it and just avoided going into detail on things that humanity has no fucking clue on
lol
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Re: ottd death battle

Post by professional crybaby on January 1st 2017, 8:33 pm

if this is the sort of quality research you put into something as important as how your dragons actually move i have absolutely no faith in your ability to figure out quantum anything
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Re: ottd death battle

Post by oaky on January 1st 2017, 8:38 pm

FUDGIEFIGHTERIA wrote:if this is the sort of quality research you put into something as important as how your dragons actually move i have absolutely no faith in your ability to figure out quantum anything
yep there is no way your dragons are propelling themselves with hydrogen sorry
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Re: ottd death battle

Post by professional crybaby on January 1st 2017, 8:39 pm

Flamcastro wrote:easy to talk shit when your setting is deliberately not based on physics
maybe you shouldn't base your entire book's premise off of a field that you don't have a full understanding of
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Re: ottd death battle

Post by oaky on January 1st 2017, 8:49 pm

I'm Afro-Caribbean wrote:i already agree what about natural gas
natural gas is 95% methane which has a density of 0.656 g/L - 25L of CH4 is 16.4 grams which is still not nearly enough to propel a 200kg dragon
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Re: ottd death battle

Post by toby on January 1st 2017, 8:49 pm

why would you write a story based on concepts that you don't understand when you could just write a story
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