On a very humid day, an aircraft taking off would require
- a shorter take off distance.
- a longer take off run.
- humidity has no measurable effect on take off run length.
Explanation
Water vapour is less dense than the dry air it displaces, so humid air has a lower density. Reduced density means less lift and less engine power for a given speed, so the aircraft must accelerate to a higher true airspeed, requiring a longer take-off run.
arifadli8 asking:
high humidity = high density
so the lift will high..
short runway are used..
correted me if i mistaken
Community Comments (2)
S
sauravkatwal Posts: 14 05.10.2013 / 05:29
i thought the same!!
anyway, high humidity means more water vapour than air that means wing will get incontact with less air particles subsequently decreasing lift. moreover, less air particle means less Oxygen as well which again decreases the efficiency of the engine!
anyway, high humidity means more water vapour than air that means wing will get incontact with less air particles subsequently decreasing lift. moreover, less air particle means less Oxygen as well which again decreases the efficiency of the engine!
D
dimky Posts: 514 05.10.2013 / 09:31
C'mon guys, humid air is less dense, because molecular mass of water (18 g/mol) is less than the molecular mass of dry air (around 29 g/mol).
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