|From the pages of jetZILLA TM - June 16, 2003 Special Edition -|
NOISY HOBBY OR HOMELAND TERROR? A small pulsejet going full roar 20 seconds after cold startup. The thin, bent stainless steel tube inserted into the tailpipe [secured in vise at left] is part of a gas velocity measurement experiment. The engine shown is a standard DynaJet running white gasoline as fuel. This is a fairly small engine, only 21 inches [535mm] long x 2.5 inches [64mm] maximum diameter and weighing 1 lb [approx. 0.5 kg], but many homebuilt engines are much larger. Some types of pulsejets can be homebuilt very simply and inexpensively, with minimal tooling and virtually no machining! Photo Copyright 2003 Cottrill Cyclodyne Corp.