Instrumentation Lab Gap Matrix
Inhaltsverzeichnis
Description
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.
Structure
Aerodynamics and Performance
issued 22 February 2017
| Measurand/Measurement | Externals and shafts |
Intake, Compressor (Front) and Fan | Compressor (rear) | Combustion system | 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 |
| TRL assessments = Red 1-4, Yellow 5-6, Green 7-9 |
|---|
| 1. Airflow Measurements | ||||||||
|---|---|---|---|---|---|---|---|---|
| Intake/core mass flow (Total/static P) | ||||||||
| Offtake flow: orrifice plates/nozzles | ||||||||
| Intake condensation/water content | ||||||||
| Sand/ash/particulate | ||||||||
| Multiphase breather flows | ||||||||
| other |
| 2. Gas Path Measurements | ||||||||
|---|---|---|---|---|---|---|---|---|
| Piezoresistive | ||||||||
| Capacitance | ||||||||
| Semi infinite line - remote | ||||||||
| Plasma discharge | ||||||||
| MEMS | ||||||||
| Fiber optic (FPI, FBG) | ||||||||
|
Traversible dynamic pressure other 2b. Gas Path: Temperature Measurements Rakes, Including noble metals Metallic Thermocouples Ceramic thermocouple alloys Fiber optic (FPI/FBG/BBR) Absorption technologies Laser based technologies - planar 2 D Mapping Tomography Seeded flowpath technologies Acoustic pyrometry Intermittant choked nozzle Traversing other 2c. Gas Path: Pressure Measurements Rakes, Including noble metals Traversible steady pressure other |
Rotating Structures
Stationary Structures
External links
- EVI-GTI and
- EVI-GTI Wiki at https://wiki.evi-gti.eu
