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Blade paint


500E
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Frank is now using ICI Imron on blades, there was a suggestion that a harder wearing paint could be used, there are epoxy finishes that will take real hard wear and abrasion

2 queries

1\ what different paints are used in the industry ?.

2\ why do blades seem to have matt\flat finishes I would think a polished\gloss finish should stand up better & be more efficient aerodynamically? or have I missed something.

We use 3M blade tapes to help with erosion on the 500 but even with 2 strips per blade the erosion further down is quite fast.

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2\ why do blades seem to have matt\flat finishes

 

To avoid sun-glare and other reflections that would disturb and reduce vision for the pilot.

The same is true for the back of propellers on stuckwings, if they had been glossy, the pilot would not be able to see through the spinning propeller-disc with certain "light-angles".

Edited by Raptor^
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Raptor

 

A reasonable idea but why not gloss top surface, the efficiency of a polished surface is surely more efficient, less drag, less turbulence, = less Horse power consumed

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Raptor

 

A reasonable idea but why not gloss top surface, the efficiency of a polished surface is surely more efficient, less drag, less turbulence, = less Horse power consumed

 

Our Bell 206 has high vis blades - the topa are high gloss black & white and the bottoms are flat black.

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I was wondering about blade tape too.. If RHC does not want to change blade coatings then what would a person need to do to add blade tape to the leading edge? STC'd or what? I worked with a guy that was an Army Trained AP that maint'd a BO105 for Metro EMS, said he always was patching the tape? Maybe the same thing?..

 

Later

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Mechanic

Info on 3m blade tape also in clear, we have used for years installed correctly we get 200= hours, not a high abrasive environment.

Better to fit in 2 12" lengths rather than one long bit then if a section gets damaged you only have to replace the damaged length

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