Day of the Cheetah by Dale Brown

Day of the Cheetah - The Russians have a program where they insert moles into the US by replacing actual people who they believe will rise in importance.  In 1985 Andrei Maraklov has replaced Ken James just before he entered the Air Force Academy.  It is now 1994 and "Ken James" is the top test pilot at Dreamland and the only pilot who is able to fly the newest plane, DreamStar.  DreamStar is piloted by the human interfacing with the computer by brainwaves.  Maraklov is ordered by his handlers to steal DreamStar and return to Russia.  Patrick McLanahan and JC Powers use another test plane, Cheetah, to hunt down and stop the theft.