Instrumentation Lab Gap Matrix

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In order to highlight the research priorities in terms of Gas Turbine Instrumentation Development, PIWG on the US side and EVI-GTI on the EU side have issued a Lab Gap Matrix. A first EVI-GTI version was released in 2004, then updated in 2009, containing measured quantities on one axis mapped against engine location / working environment on the other axis.

Measurement types were structured as follows and after a voting process among OEM’s, each area was highlighted in green, yellow or red depending on their level of maturity or even availability.


Aerodynamics and Performance

issued 22 February 2017

Measurand/Measurement Externals
and shafts
Intake, Compressor
(Front) and Fan
HP Turbine LP Turbine Exhaust
Pressure (MKS) 1 bar 1-10 bar 10-45 bar <45 bar 25-45 bar 1-20 bar 1 bar
Pressure (Eng) 15psi 15-150psi 150psi-650psi 650psi 370psi-650psi 15psi-300psi 15psi
Temperature (MKS) -40 to 300C -40 to 300C 300 to 700C+ 700C-2400C 1000C-1800C 700C-1000C 700C+
Temperature (Eng) -40 to 570F -40 to 570F 570 to 1300F+ 1300F-4300F 1800F-3300F 1300F-1800F 1300F

Rotating Structures

Stationary Structures

External links