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P&W Expectations for QAT

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

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P&W Expectations for QAT

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  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 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

  2. NASA Technology Programs Have Led the Wayto Significant Noise Reduction 40.0 30.0 20.0 B-737-200 B-737-200 DC9-10 10.0 B-727-200 Cum. Noise Margin relative to Chapter 3 (EPNdB) B-727-100 B-747-100 B-747-200 0.0 A300B4-620 B-747-200 B-727-100 B-747-300 DC-10-40 B-747-SP MD-82 B-747-200 A300-600R MD-80 -10.0 MD-87 A300 MD-11 757-200 A330-300 A310-222 A310-300 8D ReFan A320-200 767-300ER 777-200 -20.0 747-400 A318/PW6000(est) 777/GE90 MD-90-30 YYY/PW8033 NASA BASE R&T LET -30.0 XXX/PW8060 AST AST Goal -40.0 -50.0 QAT QAT Goal -60.0 1960 1970 1980 1990 2000 2010 2020 Year of Certification

  3. Fan Drive Gear SystemReduces Noise By Reducing Fan Tip Speed... High Speed Turbine Low Speed Fan …Enabler For Ultra-high Bypass Ratio Engines

  4. Geared Fixed-Pitch Fan with Variable Nozzle Potential PW Focus for QAT/UEET Program High-BPR Cycle benefits fan & jet noise Nacelle/Installation Technology advanced acoustic liners scarf inlet variable-area fan nozzle contoured core nozzle LWT, HWT, or BWB airframe Engine Component Technology airfoil count optimization (fan,LPC,LPT) airfoil 3D geometry airfoil wake management

  5. Computational Aero-acoustic ModelingPhysics-based Tool Revolutionizing Acoustic Technology Development Fan 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) Acoustic Response and Radiation Model LES Flow Field, Axisymmetric Jet CAA Technology Level Today Is Where CFD Was In 1980

  6. 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

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