Copyright © 2016 High Peak Courses Ltd (subsidiary of Jura Carbon Ltd.). Registered Address at: Harold Smith Chartered Accountants, St. Asaph Business Park, Denbighshire, LL17 0JA.

Tel: +44 (0) 1663 635226 or +44 (0) 7980 545231

Email: info@highpeakcourses.com

Micro Gas Turbine

CIM Diffuser​

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Ceramic Injection Moulded Micro Gas turbine

Historical research shows that over the last 60 years of design, research and manufacture of ceramic gas turbine blades, there is a stress level above which fast fracture occurs in the blades. Traditional circular fillet enlargement does not reduce the stress concentration sufficient enough for long term-high temperature survival. Also, larger fillets interfere with optimum aerodynamics and add weight to the rotating mass.


Extensive research produced a promising solution for a gas turbine blade that is subject to a combined tensile and gas bending load. The gas turbine blade above was designed from first principles using a SAP methodology for the design of the total ceramic blade of 25mm height uncooled at a service temperature of over 1500deg.C.

The attribute of this methodology are shown in the photo above; 

  • The CIMJET blade has no stress concentrations. (tested by photoelasticity)
  • The stress distribution in the CIMJET blade are in inverse to the "traditional blade stress distribution" where normally high stress regions are located towards the base of the blade.
  • The CIMJET blade does not contain fillets.
  • The CIMJET has no aerodynamic losses due to fillet intrusion as there are no fillets.
  • The CIMJET blade in the above photo, is subject to a combined loading.
  • The CIMJET aerodynamics have not been compromised. Designed with reference to mean radius design methodology and a h/d conforms with that laid out in Rogers & Cohen.
  • The SAP methodology produces a minimum weight design as a function of the combined loading.

The CIMJET is a Micro gas Turbine concept. It is intended that each part is made from ceramic by Ceramic Injection Moulding (CIM). However, ceramic has a low fracture toughness and ceramic blades have a history of failure at stress concentrations.


It took three years unconventional research to develop a gas turbine design methodology that respects the required aerodynamic design constraints to produce a ceramic blade design that exhibits no stress concentrations under a combined gas bending load and a tensile load. The SAP-Blade design does not use any fillets and presents an inherent minimum weight for the design load case. 

Copyright © 2016 High Peak Courses Ltd (subsidiary of Jura Carbon Ltd.). Registered Address at: Harold Smith Chartered Accountants, St. Asaph Business Park, Denbighshire, LL17 0JA.

CIM Diffuser​ in casing

High Peak Courses Ltd.

Mob: +44 (0) 7980 545231

Tel: +44 (0) 1663 635226

E-mail: info@highpeakcourses.com​​

Micro Gas Turbine




The CIMJET Micro Gas Turbine Ceramic Blade. 

CIMJET CONCEPT: A total ceramic injection moulded microgas turbine design.

The research started in 2014 on the geometric configuration of the extreme high power density ceramic injection moulded microgas turbine. 

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