04-11-2016, 01:19 PM
To my eyes the material is aluminium; there are some red lines as you indicate but this may be in the glue line between the aluminium sheets. The core is manufactured by bonding aluminium sheets together and then expanding the material to produce the cells.
Look to the bottom of the image and you get the more predominant aluminium colour. Not sure if you can make out the corrosion pits throughout the honeycomb. If it were Nomex it would tend to be all orange or red in colour, not just the odd bit.
There is very little resin in the component; the layers should not be able to be torn away as they are. It's supposed to be a reinforced plastic; there's virtually no plastic. Whatever the top layer is, it's useless. On a properly manufactured piece there should be a more coherent solid structure.
The trailing edge flaps on the 777 are carbon fibre; as I mentioned carbon fibre is not normally used with aluminium honeycomb - not on aircraft anyway. The reason is the 2 materials are incompatible; the honeycomb would corrode if it encounters moisture.
Hope this helps!
Look to the bottom of the image and you get the more predominant aluminium colour. Not sure if you can make out the corrosion pits throughout the honeycomb. If it were Nomex it would tend to be all orange or red in colour, not just the odd bit.
There is very little resin in the component; the layers should not be able to be torn away as they are. It's supposed to be a reinforced plastic; there's virtually no plastic. Whatever the top layer is, it's useless. On a properly manufactured piece there should be a more coherent solid structure.
The trailing edge flaps on the 777 are carbon fibre; as I mentioned carbon fibre is not normally used with aluminium honeycomb - not on aircraft anyway. The reason is the 2 materials are incompatible; the honeycomb would corrode if it encounters moisture.
Hope this helps!