What temperature has a Jet engine's exhaust?

What temperature is the average temperature of an airplane's jet engine's exhaust?

Can it burn a human being when standing too close?

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  • RickH
    Lv 6
    1 decade ago
    Favorite Answer

    Absolutely, it can burn a human, to a crisp.

    At takeoff power, the B757 is limited to about 877C. It never really gets that high, but it does get real hot. If you are a Fahrenheit sort of guy, 877C translates to about 1611F. This is the temperature achieved at the point that it is measured, which is probably just aft of the last turbine.

    On the other hand, as the exhaust moves farther back from the airplane is cools very quickly. All of the documents that I have seen that discuss the dangers of jet engine exhaust are concerned with the velocity of the air, not the temperature.

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  • 3 years ago

    Jet Engine Temperature

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  • 5 years ago

    This Site Might Help You.

    RE:

    What temperature has a Jet engine's exhaust?

    What temperature is the average temperature of an airplane's jet engine's exhaust?

    Can it burn a human being when standing too close?

    Source(s): temperature jet engine 39 exhaust: https://shortly.im/hSq7H
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  • Leona
    Lv 4
    4 years ago

    The F-117 and the B-2 both pass LARGE amounts of outside air into the exhaust from their engines the significantly lowers the temperature of the Exhaust. Many Modern Helicopters such as the AH-64 are fitted with what is called the Black Hole Inferred suppression system that uses the same principles to lower the temperature of the exhaust. One thing you must remember is that IR missiles are SHORT Range. Most of the time Fighter Pilots would be using Radar to get them close enough to acquire a lock IR missile. Stealth defeats the Radar. IR SAM's Surface to Air Missiles are for the most part man portable and require on the operator Aiming, and Tracking the Missile Visually to acquire a Lock. Black Paint and flying at night, removes this as an option.

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  • Janet
    Lv 4
    4 years ago

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    In order to propel itself, an airplane needs to expend energy. And no matter how carefully done, this incurs a raise in overall entropy. To get some air to move faster than the environment creates eddies on the boundary of the jet flow, and those eddies will dissipate by raising the temperature. Every form of energy will eventually dissipate in heat. So, the short answer to your question is: no, unfortunately. The laws of physics do not allow for perfectly cold energy. What you can do is dissipate the heat over a larger volume so that the exhaust plume is bigger but colder overall (but still contains the same amount of waste heat. Stealth aircraft use that technology to reduce their infra red signature (a bigger plume that is not as bright in infra red is more easily missed than a very bright tiny one -- one can easily spot a star in the night sky, but the same amount of light over a larger area is very hard to distinguish -- explaining why flares can be used to distract an incoming missile).

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  • 1 decade ago

    What he said, normal EGT is around 850 C.

    But, a human being wouldn't be able to get that close due to the exhaust force, and that nasty smell of burning fuel.

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