It has a four-stage axial compressor and a centrifugal compressor, an annular reverse-flow combustion chamber and a radial inflow turbine
. Maximum speed is 100,000rpm.
The gas turbine features a single--stage, centrifugal flow compressor; annular, reverse flow combustion chamber; and single-stage, radial inflow turbine
. A metallic, counter flow prime surface recuperator recovers heat from the turbine exhaust to preheat the intake air to reduce fuel consumption.
The researchers have already manufactured a 4-millimeter-diameter radial inflow turbine
wheel from silicon using deep reactive ion etching - a relatively new micro-fabrication method, according to Epstein.
The radial inflow turbine
, made of Inconel 713 alloy, is capable of handling operating temperatures up to approximately 1,652 [degrees] F.
His topics include principles of thermodynamics and fluid flow, compressible flow through nozzles, steam turbines, axial compressors, radial inflow turbines
, and wind turbines.