Dents/nicks on Composite prop

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Mrb13676
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Dents/nicks on Composite prop

Unread post by Mrb13676 » Sat Nov 10, 2018 9:40 am

How significant are these?
I was trained on an aircraft with conventional metal props and any dents had to be filed out/repaired. My current aircraft has an air master composite prop with 2 dents about 15mm from the tip on one of the blades. The dents are about 1-1.5mm deep - I’m told that these are not important at all but wanted to assess the opinion of the hive-mind..

Thoughts?
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heisan
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Re: Dents/nicks on Composite prop

Unread post by heisan » Sat Nov 10, 2018 10:03 am

Mrb13676 wrote:
Sat Nov 10, 2018 9:40 am
How significant are these?
I was trained on an aircraft with conventional metal props and any dents had to be filed out/repaired. My current aircraft has an air master composite prop with 2 dents about 15mm from the tip on one of the blades. The dents are about 1-1.5mm deep - I’m told that these are not important at all but wanted to assess the opinion of the hive-mind..

Thoughts?
Contact AirMaster and find out. They will have specific limits for specific areas of the blade.

That said, 1.5mm is barely through the skin, and unlikely to directly affect the strength of the prop. It could however expose the core material to atmosphere, which may be a problem for some core materials. Always best to seal such chips immediately with a good epoxy.
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Re: Dents/nicks on Composite prop

Unread post by Flooi » Sat Nov 10, 2018 10:51 am

Fix it. Even a microgram uneven balance will, in time, cost you more than just a vibration.. [-X

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