Alfred Zaehringer started out by building his own rockets and then, in World War II, saw V-1's and V-2's in use against London. Moving onto the continent, he fired at them on the front lines in Germany, and also came under the attack of the first jet and rocket fighters when he crossed the Remagen Bridge. Earning his engineering degree after the war, he formed the Detroit Rocket Society and coined the term "rocket science" and became editor of "Rocketscience" the DRS Journal. Mr Zaehringer's first professional rocket experience came at the University of Michigan, where he dealt with anti-missile and rocket programs. Then he joined the fledging Thiokol Chemical Company and became chief test engineer. Following this he went on to the Grand Central Rocket Company, where he worked on the upper stage motor for America's first satellite. Next, he formed the American Rocket Company, where he worked on a number of rocket systems. With the Apollo program, he worked on up-rating the Saturn C-5, and the manned Mars program. Moving to Martin, he was with a solid rocket management group that looked at solid strap-ons and their effects.Coming back to LTV Aerospace in Michigan, he worked on the solid propellant gas generator for the Lance battlefield missile. He and virtually the entire propulsion group then moved to Ford Motor Company where he did engineering work on EGR valves, fuel injectors, and fuel vapor management. After retiring in 1995 Zaehringer has continuously devoted his time t

Steve Whitfield is a veteran of the computer electronics and aerospace industries, and currently works as a technical and science editor.

2When my copy of Rocket Science came, I had originally intended to skim and pass on to a colleague. But it is a keeper!" -- Virginia Trimble The Observatory December 2009