Endurance estimation

[uonuav]

Hi all,
If i were to use a AXI2808/24 motor with a 11.1V 2100mAh Li-Po
on a Liberty EP trainer
roughly how long can it fly on full and half throttle?
I have been to model motors website and i think the power consumed by the motor with various props. ( http://www.modelmotors.cz/ )
Is there any ways that I can calculate the endurance using available data? It seems on the site that they do tests for the power consumption, not calculated. :(

Anyway, I worked out the endurance by assuming the motor uses 200W, it seems to be 7 mins, is it correct?

Thanks in advance. :)

[JetPlaneFlyer]

7 minutes would be correct for 200W... However unless you run flat out all the time power draw is likely to be much less.

[vintage1]

Half throttle in MOST of my planes seems to equate to about 20-25% WOT current draw..

Stuff that is flat out at 10C rating seems to stay up for half an hour or so.

[souheib]

Hi all
Also I don't know how to estimate flight duration at the optimal speed
Could you please help me?

Regards,