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Twins?I don't know if I can digest all this info. Good as it is, it's mind boggling.
Bill... you forgot the comma.... what would you do with a double bartender ?
Charles
Great info!The description is quite right, but of course, the condition of a particular prop blade would depend on the atmospheric operating conditions, and the conditions (and local climate) at the airfield (or carrier) being used.
The leading edge of the blade will certainly get some abrasion, although this tends to be almost uniform, and relatively smooth. The rear face, and trailing edge of the blade depending on the composition and surface finish of the blade itself, will often exhibit wear, as this is moving in turbulent air, and therefore more prone to abrasion from moisture, ice, dust etc.
Think of each individual blade as a wing, which is not only moving in a 'forward' direction (spinning), but also an 'upward' direction (the blade moving through the air). Each blade has to pass through the turbulent air of the preceding blade, and the airfoil section will, by design and it's very nature, 'shrug off' the major amount of drag and any particle interference, leaving the 'dead' area of the blade, the rear, to 'collect' the turbulence and disipate this, hence being more susceptible to abrasion overall.
There's a lot more to this, obviously, and I'm not an aerodynamasist, but this is a basic explanation, and, as mentioned, a lot depends on the material of the blade, and its surface coating.
Bottom line - the frontal area of a serviceable prop blade would not normally show chipping or wear.