Wikipedia
__notoc__ Yoyodyne is the name of a number of companies, both fictional and real.
Yoyodyne was introduced as a fictional defense contractor in Thomas Pynchon's V. (1963) and featured prominently in his novel The Crying of Lot 49 (1966). Described in the latter book as "a giant of the aerospace industry," Yoyodyne was founded by World War II veteran Clayton "Bloody" Chiclitz. The company has a large manufacturing plant in the fictional town of San Narciso, California. The name is reminiscent of several real high-tech companies, including the Gyrodyne Company of America, Teledyne and Teradyne, all of which were founded a few years before Pynchon wrote The Crying of Lot 49, and Rocketdyne, an aerospace company that manufactured, among other things, propulsion systems.
The " dyne" is the standard unit of force in the centimeter-gram-second system of units, derived from the Greek word dynamis meaning "power" or "force".