On 23/08/2019 11:17, The Natural Philosopher wrote:
On 23/08/2019 10:34, Mike Clarke wrote:
On 23/08/2019 08:14, The Natural Philosopher wrote:
All force, no distance
An infintely large infinitely strongĀ* helicopter could hover with no
power input.
Not so. It's having to generate lift with the rotating rotor blades.
The work is proportional to the torque on the rotor shaft and the
number of revolutions.
An infintely large rotor turns at zero RPM
an infinitely large rotor will at best generate a finite lift since
there is only a finite amount of air in which to perform. That lift is
less than required to overcome the infinite gravitational attraction to
the Earth.
There are no revolutions.
--
Cheers,
John.
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