Freedom From Vibration A Packard Aircraft Engine in flight is as smooth and flexible as a Twin-Six on the roadway below. Its perfectly balanced design provides an even flow of power, closely approaching that of a turbine. PACKARD MOTOR CAR COMPANY, DETROIT, U. S. A. PA.C KARD cA sk the man 'who…
Aviation Week
Internet Archive · Public domain (published before 1931). Free to use for anything.
