Quote:
Originally Posted by TLAM Strike
Eurofighter is twin engine, the J-10 is a single. Reportedly the J-10 is based a lot on the defunct IAI Lavi jet. 
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Similarity is there but if Chinese engineers where looking for certain aerodynamical solution i don't think they would make deferent looking jet just not to be copycats.
The same may apply to stealth technology.
Optimal solutions may look alike.