>Hi Graham,
>
>That is an interesting observation. I must be missing
>some critical aspect of the physics involved in the difference between the
>two props and their hubs. In order to airstart an engine, the prop must be
>taken out of feather in order for the relative wind to impart a rotational
>force. Is it a matter of degree of prop pitch? What am I missing?
>
>Ira
Hi Ira,
As someone said, the stationary prop needs a very high pitch setting to
give any torque to start the engine. A stalled blade won't do it with a
geared engine.
graham
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