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I'm more confused how a helicopter that's 2500 lbs empty can somehow spit out over 900 lbs of emissions every hour for its four hour flight endurance. They've g
by rriepe 7y ago
I'm more confused how a helicopter that's 2500 lbs empty can somehow spit out over 900 lbs of emissions every hour for its four hour flight endurance. They've got to be doing some tricky calculations to get there. I'm guessing it looks more like consideration of infrastructure and production than it does passenger-time.
- Zanni 7y agoOne pound of carbon becomes 3.7 pounds of CO2 "emissions" when it combines with atmospheric oxygen: https://www.fueleconomy.gov/feg/contentIncludes/co2_inc.htm https://www.fueleconomy.gov/feg/contentIncludes/co2_inc.htm
- peter303 7y agoOne gallon of carbon petroleum fuel weighing 7 pounds becomes 22 pounds of carbon dioxide. Essentially in burning fuel you replace carbon plus two hydrogen atoms- atomic weight 14- with a carbon plus two oxygen atoms- atomic weight 44. That is an increase of 3.14x.
- smilekzs 7y agoWell it is also burning oxygen from air which you don't carry on the helicopter. Let me see how much high school chemistry I still remember... CO2 = C (12) * 1 + O (16) * 2 So 1 lb of C from fuel => 3.67 lb of CO2 out Suppose AvGas is just Octane, C8H18 C8H18 = C (12) * 8 + H (1) * 18 1 lb of octane => 0.84 lb of C => 3.09 lb of CO2 So yeah, you get 3 lb CO2 from 1 lb of octane.
- loeg 7y agoAir breathing engine.
- jann 7y agoIt takes fuel (onboard) + oxygen (environment) to create the CO2. I assume that’s where the additional mass comes from.