INTERMITTENT DETONATION ENGINE Russian patent published in 2013 - IPC F02K7/04 

FIELD: engines and pumps.

SUBSTANCE: intermittent detonation engine includes a housing, storage and supply means of fuel and an oxidiser to a reactor, a reactor with an annular nozzle and a gas-dynamic resonator. The latter is made in the form of a pipe from non-magnetic material of smaller diameter, one end of which has a convex bottom, and the other one has a free bottom. The resonator is arranged in the reactor tube so that the outlet of the annular nozzle is directed into the inner cavity of the resonator, and an intersection point of jets of fuel mixed with oxidiser, which leaves the annular nozzle, and a focal point reflected from impact wave bottom are aligned. On critical section of the annular nozzle there arranged are means of pulse activation, outgoing mixture of fuel and oxidiser. The resonator bottom consists of two parts separated with a buffer; an inner part is made from material sustaining high pulse loads, and an external part is made of a unit of piezoelectric elements electrically connected in parallel and being a piezogenerator. The engine includes a control and monitoring system of an engine operation process, which consists of sensitive elements and an amplifying and converting device. Sensitive elements are represented with a constant magnet and a winding of a wire, which is wound about the outer housing of the resonator, as well as a piezoelectric generator, the outputs of which are connected to the inlet of a signal receiving and converting unit. The amplifying and converting device consists of a power supply source, a monitoring unit and a receiving and conversion unit of a signal. The input of the receiving and conversion unit is connected to wire winding wound about the outer housing of the resonator, the output of the piezogenerator and a startup and shutdown unit. The output of the receiving and conversion unit is connected to an actuating element and the monitoring unit of the actuating element, which is represented with an electronic switch, through which the power source is connected either to means of pulse activation or to wire winding located on critical section of the annular nozzle. The control input of the electronic switch is connected to the output of the receiving and conversion unit.

EFFECT: improving combustion efficiency and specific thrust characteristics of an intermittent detonation engine and implementing automatic control and monitoring of its operation.

3 cl, 3 dwg