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USAF plans F-15 modernization

TomcatViP

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Nothing that I have read so far mentions anything specific but elevators skins are made of composites since Eagle inception, that we know. Here it does appear as if they are sharing the same revetement. So either the wing is now made of old epoxy matrix or everything was re-designed.
 

TomS

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There are some comments in the article below about the F-15QA wing being a new structural design with old aerodynamics.

https://www.flightglobal.com/helico...15s-pave-upgrade-path-for-usaf/127193.article

In an interview with FlightGlobal on 22 February, Parker also confirmed the F-15QA also will be delivered with a redesigned wing that strengthens the internal structure without changing the aerodynamics,. The redesign was made possible by using advanced new manufacturing techniques developed within Boeing in the last few years, he adds.
 
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