Indexed Positive Displacement Rotary Motion Device

A pulse detonation device comprising:

• a. a detonation region having a Schelkin spiral therein,
• b. a mixing chamber in communication with a gas transfer line that provides preheated gas from a heat transfer system, which provides an air conduit for air to transfer therearound the detonation region, extracting heat therefrom,
• c. a mixing chamber configured to receive gas from the gas transfer lines that are in communication with the heat transfer system, the mixing chamber further in communication with a fuel injector,
• d. a diffuser configured to receive a fuel air mixture from the mixing chamber,
• e. a detonation region downstream from the flow of the air fuel mixture, where the detonation region is configured with a detonation location that provides sufficient activation energy to detonate the fuel air mixture,
• f. whereby the expanding, combusted gas of the fuel air mixture travels down the detonation region to an exit location where it is in communication with a positive displacement rotary motion device.