 Liebeck's designs include propellers, wind turbines.wings for racing cars that have won the Indianapolis 500 and the Formula One World Championship, the wing for NASCAR's "Car of Tomorrow," the keel for the America³ yacht which won the 1992 America's Cup, and the wing for a World Championship aerobatic airplane

Liebeck has lectured in aerodynamics and aircraft design courses at several universities.Since 1995 he has been a Professor of the Practice of Aerodynamics at the Massachusetts Institute of Technology where he lectures in aeronautics.