500e said
Lets hope they work on the blade design build quality as well
It may surprise many, but I have had some intelligence about the -7 blades, and I can tell you that the design dramatically increases the bond overlap length for the skin-to-spar joint which is a significant advantage. They also have adopted surface preparation processes which I would have recommended if given the chance. They actually listened to my comments, and I give them credit for that.
The issue of the stress concentration at the trailing edge is not within my field of expertise so I leave that to others. The issue of one blade which disbonded after a short service life may be attributed to a one-off contamination (bare thumb in wrong place?) issue which should be addressed by closer QC.
While I still remain concerned about the integrity of the earlier blades, I am now more confident in the processes used in current builds. So, I am sure that they have addressed many bonding issues, so I would be less concerned about future developments such as these new designs.
Regards
Blakmax