Communication Marie-Claire Langfeld - English AST Fiona Hope – Science AST.
P&W Expectations for QAT AST was a successful NASA/Industry program, provides a blueprint for QAT...
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Transcript of P&W Expectations for QAT AST was a successful NASA/Industry program, provides a blueprint for QAT...
![Page 1: P&W Expectations for QAT AST was a successful NASA/Industry program, provides a blueprint for QAT QAT is funded at 1/2 of AST Noise Element, that has an.](https://reader036.fdocuments.in/reader036/viewer/2022062322/5697bfab1a28abf838c9b2f9/html5/thumbnails/1.jpg)
P&W Expectations for QAT • AST was a successful NASA/Industry program,
provides a blueprint for QAT• QAT is funded at 1/2 of AST Noise Element, that has an impact on expectations• The engines make most of the noise, therefore engine noise-reduction technology will be at least 50% of QAT• There is a parallel NASA UEET engine program, QAT and UEET will be tightly integrated• AST Engine Noise/Propulsion Elements focussed on noise/NOX, QAT/UEET will focus on noise/NOX/CO2/GCC, thus increased emphasis on reducing fuel burn
W. K. Lord 4/11/00
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NASA Technology Programs Have Led the Wayto Significant Noise Reduction
777-200
A330-300
MD-90-30
MD-11
A320-200
747-400
A300-600R
767-300ERA310-300757-200
MD-87MD-82
B-747-300A300B4-620
A310-222
MD-80
B-747-200
B-747-SPDC-10-40
B-747-200
A300
B-747-200
B-747-100
B-737-200B-737-200
B-727-200
DC9-10
B-727-100
B-727-100
-60.0
-50.0
-40.0
-30.0
-20.0
-10.0
0.0
10.0
20.0
30.0
40.0
1960 1970 1980 1990 2000 2010 2020
Year of Certification
Cum. NoiseMarginrelative
toChapter 3
(EPNdB)
XXX/PW8060
YYY/PW8033
A318/PW6000(est)777/GE90
8D ReFan
NASA BASE R&T LET
AST
QAT QATGoalQATGoal
ASTGoalASTGoal
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Low SpeedFan
High SpeedTurbine
…Enabler For Ultra-high Bypass Ratio Engines
Fan Drive Gear SystemReduces Noise By Reducing Fan Tip Speed...
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Geared Fixed-Pitch Fan with Variable NozzlePotential PW Focus for QAT/UEET Program
High-BPR Cyclebenefits fan & jet noise
Engine Component Technologyairfoil count optimization (fan,LPC,LPT)airfoil 3D geometryairfoil wake management
Nacelle/Installation Technologyadvanced acoustic linersscarf inletvariable-area fan nozzlecontoured core nozzleLWT, HWT, or BWB airframe
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Acoustic Response and Radiation Model
LES Flow Field, Axisymmetric Jet
CAA Technology Level Today Is Where CFD Was In 1980
Computational Aero-acoustic ModelingPhysics-based Tool Revolutionizing Acoustic
Technology DevelopmentFan Noise:
• Fan Rotor / Stator Interaction Tone Noise
• Fan Broadband Noise Model
Jet Noise:
• Near Term Methods based on Reynolds-avg CFD
• Longer Term: Large-Eddy Simulation (LES)
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QAT Program Content
• Yr 2000 system studies -set technical direction
• Technology development/ demonstration -model scale e.g. 22” fan rig in 9x15 jet noise in NATR -full scale demo (UEET engine)
• core & turbomachinery (LPC/LPT) noise
• computational methods development