High Altitude flying advice/adjustments for my first build?

pptvark

pptvark

Member
Howdy,

Wondering if anyone has advice on flying at high altitude-- 2000m+?

I am absorbing all this knowledge from the forum to make the leap and want to know if there are any potential problems I might run into?

I want to shoot myself summiting on the top of a mountain with a photo from above! That altitude would be around 4000m.

Is this possible? I have calculated that air density falls about 10% every 1000m of altitude and I am assuming with electric motors that corresponds to a need for 10% more power needed for every 1000m- meaning shorter flight times.

Thanks for any advice or insights!

Pat
 

B

bruce365

Null
Hi pptvark, there are soooo..... many variables depending on battery motor weight. As a crude example if you were flying a quad with say 1600 grams AUW with 10" props at 500 meters and you took it to 4000 mtrs altitude to get similar efficiency you would need to increase your prop size to 12"
The following calculator will allow to fiddle with numbers.

http://www.ecalc.ch/xcoptercalc_e.htm

Regards - bruce
 

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