Like the wheel brake when stopping?
It is a 7 kW motor. Those things are better than
90% efficient so not all that much heat. They do
say it is an adaptation of a commercially
available motor so no need to design a hub motor.
There aren't too many bicycle hub motors that develop 7 KW.
The "noisy" jet won't be so noisy. Lots of
airframe shielding and the hot exhaust will be
surrounded by a cooler airflow as some of the
intake air by passes the engine. It all helps.
Mike
At 02:03 PM 21/04/2015, you wrote:
Re the hub motor, it rains almost constantly in
the UK and as a result, the grass is green and
long. The heat generated by such a motor would
be quite a lotÂ… many kilowwatts. The huge
advantage of this is when taking off from a
Australian paddock, you might start a fire on
take-off and then be able to stow the noisy jet,
and thermal up and away on the plume. D
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