Turbo jet mixer

A turbojet mixer comprising:

• an inner housing having an inlet, the inner housing including a coupling section, a generally tubular section, and an end plate, the interior of the generally tubular section defining an inner chamber;
• an outer housing positioned substantially about the inner housing, the outer housing being rotationally coupled to the inner housing, the outer housing adapted to rotate relative to the inner housing, the outer housing having an inner wall;
• a nozzle coupled to the outer housing, the nozzle coupled to an aperture in the outer housing to fluidly connect the inner chamber to the nozzle;
• a continuously rotatable dashpot coupled to the inner housing;
• and
• a gearing mechanism coupled to the inner housing positioned to operatively couple a ring gear coupled to the outer housing to the dashpot, wherein the gearing mechanism is a compound epicyclic or compound planetary gear system,
• wherein the generally tubular section of the inner housing comprises a solid portion and a window positioned between a mounting flange and a gearbox, so that the solid portion prevents fluid communication between the inner chamber and the nozzle when the nozzle is substantially overlapping the solid portion, and the window allows fluid communication between the inner chamber and the nozzle when the nozzle is substantially overlapping the window through the rotation of the outer housing.