Still no bites? OK, here's another one, getting easy now! The aircraft was a German aircraft, sold to the Israelis, who used a nickname popular during WWII, but, was misunderstood, and so, via a re-translation, it was given later a new name. The nickname was based on the designer's name, which means, in English, Knife Smith. His company was also later called this, but, after this aircraft had been designed.