Originally Posted by
ScepticalOptomist
Humidity would only be a factor in isolation wouldn’t it?
If you look at two samples of air at the same temperature and pressure - the more humid air would be less dense as you said.
In our actual environment though, more humid air would be accounted for by the temperature and /or pressure increasing, which is taken into consideration.
Thank you for your reply. If you run the figures for two airports that theoretically were exactly the same in terms of pressure and temperature but one was nearing 100% humidity then you would have the same figures for both but the performance would be worse at the humid airport. I assume they work on the basis that the conservative nature of the performance will take account of the humidity.
You said it would be compensated with a higher temperature? But that would also impact the performance negatively along with the humidity. If there was a higher pressure then this would improve performance but the figures flysmart pop out still haven’t taken into account a really humid atmosphere such as SIN?