National Academies Press: OpenBook

Integrated Noise Model Accuracy for General Aviation Aircraft (2014)

Chapter: Appendix D. Propeller Aircraft Discrepancies

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Page 78
Suggested Citation:"Appendix D. Propeller Aircraft Discrepancies." National Academies of Sciences, Engineering, and Medicine. 2014. Integrated Noise Model Accuracy for General Aviation Aircraft. Washington, DC: The National Academies Press. doi: 10.17226/22269.
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Page 78
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Suggested Citation:"Appendix D. Propeller Aircraft Discrepancies." National Academies of Sciences, Engineering, and Medicine. 2014. Integrated Noise Model Accuracy for General Aviation Aircraft. Washington, DC: The National Academies Press. doi: 10.17226/22269.
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Suggested Citation:"Appendix D. Propeller Aircraft Discrepancies." National Academies of Sciences, Engineering, and Medicine. 2014. Integrated Noise Model Accuracy for General Aviation Aircraft. Washington, DC: The National Academies Press. doi: 10.17226/22269.
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Page 80

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Appendix D. Propeller Aircraft Discrepancies We have conducted identical analyses of propeller and jet aircraft. However, in selecting jet aircraft most in need of correction, Section 6, we found that once these significant jet aircraft were corrected, also correcting the significant propeller aircraft would improve total fleet sound energy (equivalent to effects on DNL) less than an additional 0.1 dB. However, there are some significant sound level discrepancies (measured minus modeled levels) for propeller aircraft which may be worth pursuing later, and for reference have listed the departure and arrival discrepancies in this Appendix. In general, we found that measured propeller departure altitudes were higher than modeled (Effective Altitude Discrepancy less than zero), and measured arrival altitudes were lower than modeled (Effective Altitude Discrepancy greater than zero). DEPARTURES Designator Description INM Aircraft Type Used Measured SEL (dB) Modeled SEL (dB) Measured minus Modeled (dB) Effective Altitude Discrepancy (dB) Discrepancy if Altitude Corrected (dB) BE20 Hawker Beechcraft Corp 200, 1300 Super King Air, Commuter CNA441 82.0 76.6 5.4 -3.1 2.3 BE9L Hawker Beechcraft Corp 90, A90 to E90 King Air CNA441 82.5 76.6 5.9 -3.4 2.4 SR22 Cirrus SR-22 GASEPV 85.7 83.4 2.4 -2.5 -0.1 BE58 Hawker Beechcraft Corp 58 Baron BEC58P 87.6 86.4 1.2 -2.2 -1.0 PA31 Piper PA-31/31P Navajo, Navajo Chieftain, Chieftain, Pressurized Navajo, Mojave, T-1020 PA31 85.6 85.3 0.3 -1.2 -0.9 BE30 Hawker Beechcraft Corp 300 Super King Air DO228 80.8 78.6 2.2 -2.3 -0.1 C421 Cessna 421, Golden Eagle, Executive Commuter BEC58P 86.0 86.3 -0.4 -3.3 -3.7 C182 Cessna 182, Skylane CNA182 82.0 87.6 -5.7 -1.1 -6.7 BE55 Hawker Beechcraft Corp 55 Baron BEC58P 87.6 86.4 1.2 -2.5 -1.3 C310 Cessna 310, T310 BEC58P 84.9 86.4 -1.5 -3.5 -5.0 C414 Cessna 414, Chancellor BEC58P 86.8 86.4 0.3 -3.0 -2.7 C208 Cessna 208 Caravan 1, (Super) Cargomaster, Grand Caravan CNA208 82.4 80.9 1.5 -2.3 -0.8 C441 Cessna 441 Conquest, Conquest 2 CNA441 80.7 76.6 4.1 -2.9 1.2 C210 Cessna 210, T210, (Turbo)Centurion CNA206 85.8 88.6 -2.9 -2.2 -5.1 PA32 Piper PA-32 Cherokee Six, Six, Saratoga, Turbo Saratoga GASEPV 84.6 83.1 1.5 -3.7 -2.2 C172 Cessna 172, P172, R172, Skyhawk, Hawk XP, Cutlass CNA172 80.8 78.9 1.9 -1.2 0.8 BE35 Hawker Beechcraft Corp 35 Bonanza GASEPV 85.7 83.1 2.6 -3.0 -0.4 C340 Cessna 340 BEC58P 84.4 86.3 -1.9 -2.9 -4.8 PA34 Piper PA-34 Seneca BEC58P 84.0 86.3 -2.4 -3.2 -5.5 PA46 Piper PA-46-310P/350P Malibu, Malibu Mirage GASEPV 84.3 83.1 1.2 -3.4 -2.2 PA44 Piper PA-44 Seminole, Turbo Seminole BEC58P 83.0 86.3 -3.2 -2.3 -5.5 BE33 Hawker Beechcraft Corp 33 Debonair, Bonanza GASEPV 84.7 82.9 1.8 -2.3 -0.5 C206 Cessna 206, P206, T206, TP206, U206, TU206, (Turbo)Super Skywagon, (Turbo) Super Skylane, (Turbo) Skywagon 206, (Turbo) Stationair, (Turbo) Stationair 6 CNA206, CNA20T 83.8 84.3 -0.6 -2.8 -3.4 D-1

Designator Description INM Aircraft Type Used Measured SEL (dB) Modeled SEL (dB) Measured minus Modeled (dB) Effective Altitude Discrepancy (dB) Discrepancy if Altitude Corrected (dB) P28B Piper PA-28-201T/235/236 Cherokee, Cherokee Charger/Pathfinder, Dakota, Turbo Dakota BEC58P 78.9 86.8 -7.9 -3.1 -10.9 M20P Mooney M-20, M-20A/B/C/D/E/F/G/J/L/R/S, Mark 21, Allegro, Eagle, Ranger, Master, Super 21, Chaparral, Executive, Statesman, Ovation, 201, 205, ATS, MSE, PFM (non-turbocharged engine) GASEPV 81.6 82.9 -1.3 -3.9 -5.2 P28R Piper PA-28R-1802/3, Turbo Arrow 3/200/201 Cherokee Arrow, Arrow GASEPV 83.2 83.7 -0.5 -2.8 -3.3 P28A Piper PA-28-140/150/151/160/161/180/181 Archer, Cadet, Cherokee, Cherokee Archer/Challenger/Chief/Cruiser/Flite Liner/Warrior, Warrior PA28 83.1 82.7 0.3 -1.1 -0.8 PC12 Pilatus PC-12, Eagle CNA208 79.7 80.9 -1.2 -1.3 -2.5 ARRIVALS Designator Description INM Aircraft Type Used Measured SEL (dB) Modeled SEL (dB) Measured minus Modeled (dB) Effective Altitude Discrepancy (dB) Discrepancy if Altitude Corrected (dB) BE20 Hawker Beechcraft Corp 200, 1300 Super King Air, Commuter CNA441 83.4 81.0 2.5 1.4 3.9 BE9L Hawker Beechcraft Corp 90, A90 to E90 King Air CNA441 83.2 80.9 2.3 1.8 4.1 SR22 Cirrus SR-22 GASEPV 81.9 83.2 -1.3 1.1 -0.1 BE58 Hawker Beechcraft Corp 58 Baron BEC58P 82.7 83.1 -0.5 1.4 0.9 PA31 Piper PA-31/31P Navajo, Navajo Chieftain, Chieftain, Pressurized Navajo, Mojave, T-1020 PA31 81.3 78.3 3.0 1.5 4.5 BE30 Hawker Beechcraft Corp 300 Super King Air DO228 83.1 83.0 0.2 1.0 1.1 C421 Cessna 421, Golden Eagle, Executive Commuter BEC58P 82.1 82.8 -0.7 1.7 0.9 C182 Cessna 182, Skylane CNA182 78.7 74.8 3.9 1.1 5.1 BE55 Hawker Beechcraft Corp 55 Baron BEC58P 82.8 83.0 -0.2 1.8 1.6 C310 Cessna 310, T310 BEC58P 80.9 82.9 -2.1 1.5 -0.6 C414 Cessna 414, Chancellor BEC58P 81.3 82.9 -1.6 0.7 -0.9 C208 Cessna 208 Caravan 1, (Super) Cargomaster, Grand Caravan CNA208 83.7 87.0 -3.3 1.6 -1.7 C441 Cessna 441 Conquest, Conquest 2 CNA441 81.2 80.8 0.4 2.0 2.4 C210 Cessna 210, T210, (Turbo) Centurion CNA206 86.4 80.3 6.1 1.4 7.5 PA32 Piper PA-32 Cherokee Six, Six, Saratoga, Turbo Saratoga GASEPV 80.4 83.1 -2.6 1.8 -0.8 C172 Cessna 172, P172, R172, Skyhawk, Hawk XP, Cutlass CNA172 81.4 71.2 10.2 1.8 12.0 BE35 Hawker Beechcraft Corp 35 Bonanza GASEPV 80.7 83.1 -2.4 2.1 -0.3 C340 Cessna 340 BEC58P 80.2 82.9 -2.7 1.4 -1.3 PA34 Piper PA-34 Seneca BEC58P 79.5 83.1 -3.6 1.4 -2.2 PA46 Piper PA-46-310P/350P Malibu, Malibu Mirage GASEPV 81.4 83.1 -1.7 1.8 0.0 PA44 Piper PA-44 Seminole, Turbo Seminole BEC58P 80.1 82.9 -2.8 1.8 -1.0 D-2

Designator Description INM Aircraft Type Used Measured SEL (dB) Modeled SEL (dB) Measured minus Modeled (dB) Effective Altitude Discrepancy (dB) Discrepancy if Altitude Corrected (dB) BE33 Hawker Beechcraft Corp 33 Debonair, Bonanza GASEPV 81.7 83.2 -1.5 1.9 0.4 C206 Cessna 206, P206, T206, TP206, U206, TU206, (Turbo) Super Skywagon, (Turbo) Super Skylane, (Turbo) Skywagon 206, (Turbo) Stationair, (Turbo) Stationair 6 CNA206, CNA20T 79.4 77.9 1.5 1.7 3.2 P28B Piper PA-28-201T/235/236 Cherokee, Cherokee Charger/Pathfinder, Dakota, Turbo Dakota BEC58P 76.7 83.2 -6.5 0.2 -6.2 M20P Mooney M-20, M-20A/B/C/D/E/F/G/J/L/R/S, Mark 21, Allegro, Eagle, Ranger, Master, Super 21, Chaparral, Executive, Statesman, Ovation, 201, 205, ATS, MSE, PFM (non-turbocharged engine) GASEPV 79.0 83.4 -4.4 0.8 -3.5 P28R Piper PA-28R-1802/3, Turbo Arrow 3/200/201 Cherokee Arrow, Arrow GASEPV 78.7 83.3 -4.6 1.4 -3.2 P28A Piper PA-28-140/150/151/160/161/180/181 Archer, Cadet, Cherokee, Cherokee Archer/Challenger/Chief/Cruiser/Flite Liner/Warrior, Warrior PA28 79.7 68.7 11.0 1.5 12.5 PC12 Pilatus PC-12, Eagle CNA208 85.8 86.9 -1.1 1.0 -0.1 D-3

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TRB’s Airport Cooperative Research Program (ACRP) Web-Only Document 19: Integrated Noise Model Accuracy for General Aviation Aircraft assesses the predictive accuracy of the Integrated Noise Model, identifies causes for deviations between actual and predicted values, identifies potential solutions to improve the model’s accuracy, and describes the steps needed for implementation

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