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Ceramic motor tested

15.10.2017

The American company GE Aviation, together with specialists from the US Army, has completed testing of the first prototype of a new gas turbine engine, in the design of which ceramic matrix composites are widely used.

In 2011, the US military announced that they needed new gas turbine engines that were economical to operate and relatively inexpensive to manufacture. Power plants are planned to be installed on different types of helicopters. According to GE Aviation, the use of ceramics in the design of advanced engines will reduce the cost of their production by simplifying the production cycle and reduce the cost of operation due to the longer resource of ceramic composites compared to traditional materials.

Ceramic matrix composites have a wide operating temperature range, and parts made from such materials can normally operate at much higher temperatures than conventional metal alloy elements. This allows you to expand the operating range of the propulsion system as a whole. Ceramic parts will be produced using XNUMXD printing technology.

According to the requirement of the military, the new engines must have 80% more power density than modern power plants. In addition, the specific fuel consumption of new engines should be 35% less, and the estimated resource - 20% more. Finally, the cost of production and maintenance of the project's power plants should be reduced by 45%. GE Aviation believes these requirements are quite feasible.

Testing of the first engine prototype in autumn 2016. The engine went through many start and stop cycles, it was tested for the possibility of long-term operation. During the test, the developers monitored the reliability of the compressor, combustion chamber and turbine, and these elements were tested both as part of the power plant and separately on a special stand. Other details about the inspections carried out were not disclosed.

Power plants will be produced in several versions. They will differ from each other in size and power. Depending on the version, the engines will be able to develop power from five to ten thousand horsepower (3,7-7,4 thousand kilowatts). First of all, the power plants are considered as a replacement for the T700 engines of the AH-64 Apache and UH-60 Black Hawk helicopters. T700 engines in several dozen versions have been produced since 1973 and have a power of 6,1 to 7,4 kilowatts.

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