Yes, someday when a revolution in battery technology takes place electric helicopters may become practical for some small nitch. Of course, that is going to have to be one big jump, in technology, which would revolutionize everything else as well.
Yes, that is the max output of the Rotax 582 engine, and about 825lbs was the gross weight of the Mini-500 without the PEP system, so the torque requirement would be at maximum available.Dennis,
I notice, according to their telemetry, that R-44 is consuming 177n-m of torque in a hover. That`s about 131 ftlb. Do you remember the Mini-500 torque required at max gross of 825 lbs. Seems like I remember it being about 63 ftlb. Is that what you remember?