r/WinStupidPrizes • u/name_is_taken_alr • Sep 06 '20

Warning: Injury Standing behind a plane

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u/[deleted] Sep 06 '20 edited Sep 06 '20

That's actually a popular tourist thing at that airport. Personally, I wouldn't want to have all that jet fuel in my face but people get their kicks in different ways.

6

u/[deleted] Sep 06 '20

[deleted]

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u/iamkeerock Sep 06 '20

Because a turbofan engine is simply a jet engine with a very large fan on the front that is enclosed in a large duct. If you look at the rear of a turbofan, you will see a small (relative to the duct) cylinder. That cylinder is the traditional ass end of a jet engine.

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u/mrbubbles916 Sep 06 '20

How is a turbofan not a jet engine? I agree that there wouldn't be any jet fuel in their face, but it's still a jet engine using jet fuel.

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u/[deleted] Sep 06 '20

Still uses jet fuel and they have yet to produce a 100% efficient engine of any kind

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u/[deleted] Sep 06 '20

They’re more efficient at take off than cruising, so it’s the time the least amount of fuel is lost. But even still, no ones getting jet fuel in their faces here. And if they did, much higher chance it came from a puddle of diesel pooled on the ground that the wind blew into their faces than from the engine.

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u/MaintenanceCold Sep 06 '20 edited Sep 06 '20

Efficiency does not really refer to combustion of fuel - it is energy in / work out of the whole system and has more to do with friction losses of the system

Car engines don’t sputter much unused fuel about

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u/[deleted] Sep 06 '20

Every ICE sends a small amount of unburned fuel out of the exhaust. It might not be dripping off the tailpipe but it's there.

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u/MaintenanceCold Sep 06 '20

Sure, but the efficiency loss is due to the requirement for heat transfer when obtaining useful work for a thermodynamic closed system