Secret Pete Law

By Marilyn Dash

Pete Law tells his tales for the NAG membership.Last month, the attendees of the National Air Racing Group’s annual meeting had a real treat in the form of guest speaker, Secret Pete Law. The aviation engineer has helped nearly every winning unlimited racer and even some sport racers along his amazing career path.

Starting in 1959 at Lockheed when Law worked on the F104 program he was immediately identified as someone worth knowing, and quickly recruited by Ben Rich to join Lockheed Skunk Works. To be brief, Pete is a specialist in heat transfer and systems. Commonly referred to as “ADI” in the air racing community, it is much more than that.

ADI stands for Anti Detonation Injection. Detonation occurs when a fuel/air charge within a cylinder ignites by something other than the sparkplug. The flame front in the burning charge collides with the flame front initiated by the sparkplug. Where this collision occurs, the pressure rises much higher than would normally occur when the cylinder is firing properly. The added pressure has a runaway effect, causing the fuel/air in that zone to burn so rapidly as to appear to detonate. The pressure spike caused by this can damage pistons, valves, connecting rods, etc.