At the current time the U.S. Navy use 430 gas turbine engines (GTE) for 129 vehicles. Once a year they consume fuel at two billion dollars. According to the NRL, thanks RDE military will be able to save on fuel up to 400 million dollars a year. RDE will be able to produce 10 percent more energy than ordinary CCD. RDE layout is created, but when these engines will start to arrive in the Navy, is not yet clear.
In the framework laid down RDE production NRL, acquired in the development of pulse detonation engine (Pulse Detonation Engine, PDE). The work of such power plants was based on a stable detonation combustion of fuel consistency.
In the case of engines with pulsating detonation wave propagates in the fuel consistency faster the speed of sound, for the time consistency of chemical combustion pressure in the combustion chamber is not much time to change, but then increased abruptly at times. Then begins the expansion of combustion products in the nozzle to form a jet. Last on the ships will twist the blade of a gas turbine.
One of the advantages of detonation engines is warming the fuel directly to the consistency of the fire while passing through her shock front. Next ignited fuel consistency also takes place in Knock on it manages to get a steady cycle of the engine. One of the obstacles to the creation of the RDE is the imperfection of the materials is not able to provide a great resource power Position.
In the rotary engine detonation, unlike pulse appears routing detonation wave, it seems to "wear out" around the annular combustion chamber. Such a principle can significantly reduce the noise power Position in general, improve fuel efficiency (namely, due to the lower fuel requirements for the initiation of a new detonation cycle) also Detonation achieve continuity — prior cycle prevents explosive combustion of the following.
RDE themselves can be designed without any moving parts, this ensures ease of maintenance and relatively low cost of production in comparison with ordinary internal combustion engines of other types. RDE until you plan to use to upgrade power plants already standing on U.S. Navy ships.
It must be emphasized that in addition to the development of the rotary NRL detonation engine is engaged Texas Institute in Arlington. It creates power installation received the title of the motor continuous detonation. New engines can later be applied not only on ships, and airplanes.
In March 2011, the managing director of NPO "Saturn" Ilya Fedorov said that the Scientific and Technical Center of Cradles (comes in NGOs) involved in the creation of a pulsating jet engine. Engine type Fedorov did not elaborate. At the current time are three known types of pulsating engines: valves, valveless and detonation.