More Intelligent Gas Turbine Engines - FTP Directory Listing - Nato
More Intelligent Gas Turbine Engines - FTP Directory Listing - Nato
More Intelligent Gas Turbine Engines - FTP Directory Listing - Nato
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
Inlet<br />
Compressor<br />
ACTIVELY CONTROLLED COMPONENTS<br />
Table 2.3: Sensor and Actuator Requirements for Active Control Technologies<br />
Sensor and Actuator Requirements for Active Control Technologies<br />
Technology Sensed<br />
Variable<br />
Active Inlet<br />
Control<br />
Active Noise<br />
Control<br />
Active<br />
Surge<br />
Control<br />
Active Flow<br />
Control<br />
Active<br />
Clearance<br />
Control<br />
Static<br />
pressure<br />
Dynamic<br />
pressure<br />
Static<br />
pressure<br />
Static<br />
pressure<br />
Sensor<br />
Requirements<br />
0 – 500Hz<br />
bandwidth<br />
+0.1% accuracy<br />
case-mounted<br />
installation<br />
100 kPa differential,<br />
10 kHz, +0.5% FSO<br />
35 kPa dynamic<br />
range<br />
+0.2% accuracy<br />
5 – 100 kHz<br />
bandwidth<br />
case-mounted<br />
installation<br />
35 kPa dynamic<br />
range<br />
±0.5% resolution<br />
20 Hz – 100 kHz<br />
bandwidth for<br />
sensors (depending<br />
of the flow<br />
phenomena<br />
measured)<br />
Clearance 2.5 mm range,<br />
accuracy 25 µm<br />
50 kHz bandwidth<br />
case-mounted<br />
installation<br />
Controlled<br />
Variable<br />
Inlet<br />
geometry,<br />
vortex<br />
generator<br />
geometry,<br />
flaps, jet,<br />
suction<br />
Honeycomb<br />
geometry,<br />
acoustic<br />
waves<br />
Jet, guide<br />
vane<br />
movement,<br />
bleed air<br />
Jet (pulsed,<br />
zero-netmass-flow)<br />
,<br />
suction,<br />
blowing,<br />
airfoil<br />
geometry<br />
change<br />
Casing<br />
geometry<br />
Actuator<br />
Requirements<br />
Flow control bandwidth<br />
0 – 2kHz<br />
0 – 2% core mass flow<br />
Geometry control<br />
bandwidth 0-100Hz<br />
Supersonic inlet control<br />
1 – 3Hz<br />
Piezoelectric Actuator,<br />
2.5 – 5 mm deflection<br />
Strong dependence on<br />
stall/surge dynamics<br />
Bandwidth<br />
80 – 150Hz full amplitude<br />
500 – 600Hz small signal<br />
1 – 4% core mass flow<br />
Fluidic actuation devices<br />
installed in airfoil at<br />
different frequency<br />
ranges:<br />
a) 200 – 300Hz<br />
b) 500Hz – 5kHz<br />
c) 50 – 100kHz<br />
Steady blowing of < 2%<br />
core flow at 1 – 2Hz<br />
Shape memory alloys<br />
installed in airfoil for<br />
shape variation<br />
deployable within few<br />
seconds<br />
Thermal, mechanical,<br />
pneumatic devices<br />
Actuation rate > 0.1mm/s<br />
bandwidth 1 – 5 Hz<br />
Force 10kN<br />
Stroke 3mm<br />
Resolution 0.02 mm<br />
RTO-TR-AVT-128 2 - 29
Change language