Lufthansa subsidiary Swiss said in a May 15 statement that it has modified all its 777-300ERs with sharkskin technology over the past one-and-a-half years.
Looks to me that using shark patterns inside a jet engine (vs as outer skin) incl hardened printing methods is a new tech, and yes everybody can eventually imitate/repeat other peoples tech, but it’ll take time to get things right, so the article seem unbiased enough.
It’s not just public knowledge, Lufthansa tested it in commercial airliners a few years ago. it’s just a FUD article to make it look like this is some new unknown super tech.
https://aviationweek.com/mro/aircraft-propulsion/lufthansa-technik-targets-aeroshark-application-other-aircraft-types
This is from just a few weeks ago
Looks to me that using shark patterns inside a jet engine (vs as outer skin) incl hardened printing methods is a new tech, and yes everybody can eventually imitate/repeat other peoples tech, but it’ll take time to get things right, so the article seem unbiased enough.