Now, for the first time in history the Variable Pitch Propeller is adapted for automobiles.

No, Buicks don't fly ...

But to bring you the revolutionary new Variable Pitch Dynaflow, Buick has borrowed an important design feature directly from aviation.

As most air travelers know, the propeller blades of a modern air liner are mounted in the hubs so that the "pitch" (angle of attack) can be changed for varying flying conditions.

In other words, modern air liners use one pitch of the blades for take-off and climbing and a different pitch for cruising.

This development brings two highly desirable advantages:

First, the use of variable pitch propellers reduces an airplane's take-off run by hundreds of feet and steps up rate-of-climb.

Second, variable pitch propellers greatly improve gasoline economy in cruising.