A ja znalazłem takie coś

tyle że in English
In addition, at the high altitudes necessary to stay out
of most SAM envelopes in Iraq, the Tornado would be operating at a
significant fraction of Mach 1, and the RB 199's relatively high bpr
(ca. 1:1) means its dry thrust drops precipitously as it enters the high
subsonic/transonic area (trying to swallow too much air). The RB 199
was never meant to be a fighter engine, and, as far as the Tornado
goes, is a classic example of "You can't get there from here."