FEATURED COLLECTION. The Paul and Paula Knapp Collection of Internal Combustion Engines (CLICK HERE to view the entire Knapp miniature engine collection.)Our featured exhibit is the Internal Combustion Engine Collection on loan from Paul and Paula Knapp's Miniature Engineering Museum in Arizona.
The valveless pulse jet engine or pulse detonation engine is the most simple type of jet and is therefore popular among hobbyists as a DIY project. it is often referred to as a 'tuned pipe' because its operation depends upon making the parts the right size and shape so that it fires, or resonates at the engines natural, fundamental frequency.