Perhaps the most famous pulsejet engine is the Argus V1 “Buzz Bomb” made by Germans in World War II. Fuel was sprayed directly into the engine through a 3 x 3 array of nine nozzles behind a valve grid—a direct-injection pulsejet. The fuel supply was pressurized by the tank of compressed air that was also used to drive the gyros and operate the control surfaces of the V1 airframe.
This miniature pulsejet engine operates exactly like the V1. It burns regular gasoline and has a variable thrust range from 1/2 to 6 1/2 pounds. Mike Early developed and built the engine in 1996, and made the aluminum castings for the intake. He fabricated the combustion chamber and tailpipe from stainless-steel sheet metal. Early produced approximately 12 models from 1996 to 1998. They are 29″-long, 13″-wide, and 10″-high.
Anyone who has ever heard a pulsejet run will not forget the sound. It is LOUD, as it is essentially one long controlled explosion.