Engine Propeller
Engine Propeller
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Hobbyzone Champ RTF Airplane List Price: Sale Price: $77.49 You save: $42.50 (35%)  |
DescriptionTeach yourself to fly in your own backyard with the 3-channel HobbyZone® Champ RTF. With its compact size, durable construction, and gentle flight characteristics, the Champ takes the stress out of teaching yourself to fly. |
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what is 'experimental pich ' in aircraft piston engine propeller?
'experimental pitch' is also called 'ideal pitch' or 'geometric pitch .
The concept of this is not very clear to me.
Your terms are all related, but at least two aren't the same thing.
Geometric Pitch is the distance the propeller would move forward in one revolution if there were no slip. (Imagine the propeller slicing through a solid.)
Effective Pitch (a term you didn't use, but thrown in just for clarity) is the distance the propeller actually moves forward in one revolution.
Ideal Pitch is the distance the propeller would have to move forward in one revolution in order to cause the propeller blades to be at a zero lift angle of attack (and thus produce no thrust).
Experimental Pitch appears to be another term for Ideal Pitch, although it's not a term I had encountered until you brought it up.