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Forum: Glow Engines

12-10-2010, 06:30 AM

Replies: 36

Unloaded rpm of glow engine?

Views: 4,226

Posted By Sport_Pilot

RE: Unloaded rpm of glow engine?

I thought both pitch and AOA were referenced from the apex of the leading edge and trailing edge. I also thought this was what APC was using and claiming that they are using the correct reference and...

Forum: Glow Engines

12-09-2010, 11:34 AM

Replies: 36

Unloaded rpm of glow engine?

Views: 4,226

Posted By Sport_Pilot

RE: Unloaded rpm of glow engine?

This is overly simplistic. The first figure shows the AOA as the same as the pitch angle when static. This is incorrect as the prop is pulling air in so that there is an incoming air velocity. The...

Forum: Glow Engines

12-09-2010, 10:30 AM

Replies: 36

Unloaded rpm of glow engine?

Views: 4,226

Posted By Sport_Pilot

RE: Unloaded rpm of glow engine?

I think another way to explain this is that the prop creates a suction of incoming air (the vortex because it is swirling), as the incoming air accelerates then the prop comes out of the stalled...

Forum: Glow Engines

12-07-2010, 09:54 PM

Replies: 36

Unloaded rpm of glow engine?

Views: 4,226

Posted By Sport_Pilot

RE: Unloaded rpm of glow engine?

A smaller diameter will unload more in the air, and a smaller pitch will also unload more in the air. So when it is a difference in a larger pitch but smaller diameter to a smaller pitch but larger...

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