2 results about "Ramjet" patented technology

The invention discloses a sliding-disc-valve solid rocket ramjet engine flow-adjustable gas generator which comprises a combustion chamber, a combustion chamber end cover, a motor fixing frame, a rotating servo motor, a control panel, a fan-shaped gear, a sliding disc valve sleeve, a spray pipe, a planetary gear speed reducer, an arc-shaped gear rack and a sliding disc valve, wherein the combustion end cover is fixedly connected with the spray pipe and fixed with the combustion chamber; one end of the sliding disc valve sleeve is arranged on the excircle of the spray pipe in a sleeving manner;the sliding disc valve sleeve and the spray pipe are sealed with each other and capable of rotating relative to each other; the other end of the sliding disc valve sleeve is fixedly connected with the sliding disc valve; the rotating servo motor is fixed on the combustion chamber end cover and connected with the fan-shaped gear through the planetary gear speed reducer; the arc-shaped gear rack isarranged on the excircle of the sliding disc valve sleeve; the fan-shaped gear is meshed with the arc-shaped gear rack; a group of vent holes are formed in an end cover of the spray pipe; a group ofadjusting holes are formed in the sliding disc valve; the positions of the adjusting holes directly face those of the vent holes; and the control panel is used for controlling the rotating angle of the rotating servo motor. By the adoption of the sliding-disc-valve solid rocket ramjet engine flow-adjustable gas generator disclosed by the invention, the accurate control of gas flow can be achieved.

The invention provides a water injection device and system for a sub-combustible ramjet water swallowing test to solve the problem that the sub-combustible ramjet engine flames out or the fuel-gas mixture cannot be ignited due to swallowing liquid water during the flight process. Including the water inlet pipe and the liquid collection ring, the liquid collection ring includes N annular pipe sections arranged concentrically, the water inlet pipe is arranged along the radial direction of the annular pipe sections, and communicates with each annular pipe section; M nozzles are arranged on the liquid collection ring, The pipe wall of the annular pipe section has openings communicating with the nozzles, wherein M and N are positive integers. The water spray device of the present invention has been successfully applied to a water swallowing test of a certain type of sub-combustible ramjet engine, and the test run test under simulated real working conditions has verified the feasibility and reliability of its work and guaranteed the progress of model development.