Amazing small Jet engine. This jet engine is a combinations of Ram-jet and Pulse-jet engines. It is a butane or propane powered Jet engine you can use for small airplane, jet helicopters and other projects. Follow the simple step by step instruction on the construction plan, and within weeks you have your completed jet engine for your projects. Simple available materials are readily available to easily assembly this jet engine. See the Jet Engine mounted at the tip of rotor blade of the Jet helicopter  in the picture below, Mounted also on Jet engine test stand (Audio-Visual Device) to study the operations, thermodynamics and principles of the jet engines.