PWOC

"user314" (user314) 04/12/2019 at 12:58 • Filed to: Spacelopnik, SpaceX, Falcon heavy, POWER!

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This is what we'll show whenever you publish anything on Kinja: > user314 04/12/2019 at 13:02

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#BOOST

KingT- 60% of the time, it works every time > user314 04/12/2019 at 13:05

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Somebody had too much Taco Bell yesterday

For Sweden > user314 04/12/2019 at 13:09

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Buncha  pushy bois

nerd_racing > user314 04/12/2019 at 13:16

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For science, what kind of emissions does this produce? 

For Sweden > nerd_racing 04/12/2019 at 13:35

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It uses kerosene for fuel, and produces the carbony-type of emissions.

EngineerWithTools > nerd_racing 04/12/2019 at 13:54

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All of them.

nerd_racing > EngineerWithTools 04/12/2019 at 13:56

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I’m curious how many cars worth of emissions one launch causes.  

OPPOsaurus WRX > user314 04/12/2019 at 13:57

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i saw this one yesterday

EngineerWithTools > nerd_racing 04/12/2019 at 15:45

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That’s complicated. Google will lead you to all sorts of discussions on the subject, some better than others. Here’s the really short story:

Looking at CO2 only, because that’s easier and is getting a lot of attention.

1 gallon of gasoline produces 19.6 lbs of CO2 when burned. 1 gallon of kerosene produces 21.5 lbs. If you look at energy content vs CO2 produced, gasoline and kerosene are even closer. Let’s call them the same.

A Falcon Heavy has 3 x 272,300 lbs of kerosene. At 6.68 lbs/gal, that’s a total of 122,290 gallons of kerosene for the first stage.

If the car in question has a 20 gallon fuel tank, then the first stage of a Heavy produces the same amount of CO2 as driving your car enough to refill it 6100 times.

That’s a lot when compared to a single car. Compare it to all of the cars driven daily in the US and it’s a lot smaller, 122,290 gallons for one launch, ~39 1,000,000 gallons per day burned in cars in the US.  

Longtime Lurker > EngineerWithTools 04/12/2019 at 23:30

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But how many MPGs does it do?

EngineerWithTools > Longtime Lurker 04/13/2019 at 13:08

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Ha!

Infinite, or near enough to make no difference. There is enough energy to get the payload out of earth’s gravity well, so for all practical purposes the distance travelled on a tank  has no limit.

ttyymmnn > user314 04/24/2019 at 12:28

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This is just so ridiculously cool.