The power required at low altitude for a given IAS is
- unchanged with altitude.
- higher.
- lower.
Explanation
For a given indicated airspeed the dynamic pressure and therefore the drag are the same at any altitude. However, at low altitude the air is denser, so the true airspeed is lower for that same IAS. Since power required equals drag times true airspeed, the lower TAS at low altitude means less power is required.
trap2307 asking:
Please explain. There is more drag at low altitude. Is it because of less quantity of oxygen at higher altitude?
Community Comments (5)
I
Ielgazali Posts: 3 07.11.2014 / 03:11
it has to do with air density .
J
juanda8322 Posts: 1 07.11.2014 / 17:03
YES MR IBRAHIM AT HIGHER ALTITUDE THE AIR DENSITY IS LESS WHICH IN TURN PRODUCES LESS DRAG
3
3g_nitro Posts: 3 06.10.2016 / 18:14
This is talking about power. For combustion the higher the density the greater the power......
K
khatkar Posts: 3 16.02.2017 / 16:05
Low latitude is more drag. so clear power is lower. ..
B
bennguli Posts: 2 14.04.2017 / 11:20
For combustion the higher the density the greater the power...as juanda8322 says and at low altitude density is high,so surely guys engine power will be high or low?contradicting
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