Re: How do pulse duct jet engines work?

Greetings:

The German V1 flying bomb used in WWII was my first introduction to pulse jet engines. In the 1950s there were several small helicopter designs which used small pulse jet engines on their rotor tips in place of conventional engines. I don’t recall any of these designs going into production. The last time I saw a pulse jet engine was in the early 1960s. I purchased a model pulse jet engine called a Dynajet from a model aircraft company to test infrared measuring equipment in our laboratory. These simple jet engines could burn conventional jet fuel and they made excellent infrared sources for testing our equipment.

I was surprised to see some of these same Dynajet engines in model aircraft at the following web site: http://freespace.virgin.net/dyno.power/gasturbine/pulse.htm

There also is a Swedish web site with a pulse jet design that looks very similar to the Dynajet engine. The web site is: http://www.student.tdb.uu.se/~m95rst/rocketery/sw_pulse_plan_en.html

There are 18 pulse jet designs available at no cost at the following web site: http://home3.inet.tele.dk/kennethm/pulse.htm

If you search with altavista ( http://www.altavista.com/) using key words "pulsejet" and "aircraft" you will find very many links to pulse jet models and technology.

Best regards, your Mad Scientist
Adrian Popa