| Citation: | WANG Hanyi, SHAN Peng, ZHOU Yicheng. Aerodynamic and discrete frequency noise characteristics of contra-rotating propfans under take-off conditions[J]. Journal of Aerospace Power, 2025, 40（10）：20230672 doi: 10.13224/j.cnki.jasp.20230672
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To carry out the aerodynamic optimization design and the low-noise-characteristic design of the contra-rotating propfans in the aerodynamic design inverse problem phase, a program FODNOPPa2, specifically for predicting the discrete frequency noise, was recently developed. Based on the formulation Formu 1A derived by Farassat, this program offered the time-domain solutions of the Ffowcs Williams-Hawkings equation. By utilizing this program, the discrete frequency noise of a model contra-rotating propfans called CRPFt, which was designed using compressible lifting surface theory, was acquired under the take-off condition with a flying altitude 300 m and a Mach number 0.24. Observation points were synchronized with the movement of the fuselage and distributed across five representative lines or curves. Utilizing the nonlinear harmonic solver available in the computational fluid dynamics software NUMECA FINE™/Turbo, it tried to acquire a three-dimensional viscous quasi-unsteady flow field and to extract the aerodynamic loads as the input of the noise calculation. This study demonstrated that the nonlinear harmonic approach was capable of effectively simulating the three-dimensional viscous quasi-unsteady flow field of CRPFt under the take-off condition. Typically, the sound pressure level (SPL) of the rotor harmonics held a greater significance than the SPL of the interference harmonics at the observation points situated in close proximity to the middle plane between the two propfans. Nevertheless, the SPL of the interference harmonics had more significance when measured at the observation points located further away from the middle plane.
| [1] |
ROHRBACH C, METZGER F B. The prop-fan-a new look in propulsors: AIAA-1975-1208[R]. Anaheim, US: American Institute of Aeronautics and Astronautics, 1975.
|
| [2] |
STRACK W C, KNIP G, WEISBRICH A L, et al. Technology and benefits of aircraft counter rotation propellers: NASA TM-82983[R]. Anaheim, US: National Aeronautics and Space Administration, 1982.
|
| [3] |
HANSON D B. Helicoidal surface theory for harmonic noise of propellers in the far field[J]. AIAA Journal, 1980, 18(10): 1213-1220. doi: 10.2514/3.50873
|
| [4] |
HANSON D B. Near-field frequency-domain theory for propeller noise[J]. AIAA Journal, 1985, 23(4): 499-504. doi: 10.2514/3.8943
|
| [5] |
HANSON D B. Noise of counter-rotation propellers[J]. Journal of Aircraft, 1985, 22(7): 609-617. doi: 10.2514/3.45173
|
| [6] |
DUNN M H, TINETTI A F, NARK D M. Open rotor noise prediction using the time domain formulations of Farassat[J]. International Journal of Aeroacoustics, 2015, 14(1/2): 51-86.
|
| [7] |
AMIET R K. Thickness noise of a propeller and its relation to blade sweep[J]. Journal of Fluid Mechanics, 1988, 192: 535-560. doi: 10.1017/S0022112088001971
|
| [8] |
FARASSAT F. Theory of noise generation from moving bodies with an application to helicopter rotors: NASA TR R-451[R]. Washington DC, US: National Aeronautics and Space Administration, 1975.
|
| [9] |
FARASSAT F, SUCCI G P. The prediction of helicopter rotor discrete frequency noise[J]. Vertica, 1983, 7(4): 309-320.
|
| [10] |
FARASSAT F. The prediction of the noise of supersonic propellers in time domain—new theoretical results: AIAA-1983-0743[R]. Atlanta, US: American Institute of Aeronautics and Astronautics, 1983.
|
| [11] |
NYSTROM P A, FARASSAT F. A numerical technique for calculation of the noise of high-speed propellers with advanced blade geometry: NASA TP-1662[R]. Washington DC, US: National Aeronautics and Space Administration, 1980.
|
| [12] |
BRENTNER K S. Prediction of helicopter rotor discrete frequency noise—a computer program incorporating realistic blade motions and advanced acoustic formulation: NASA TM-87721[R]. Washington DC, US: National Aeronautics and Space Administration, 1986.
|
| [13] |
DUNN M H, TARKENTON G M. Computational methods in the prediction of advanced subsonic and supersonic propeller induced noise—ASSPIN users’ manual: NASA CR-4434[R]. Washington DC, US: National Aeronautics and Space Administration, 1992.
|
| [14] |
ZORUMSKI W E, WEIR D S. Aircraft noise prediction program theoretical manual: Part 3 propeller aerodynamics and noise: NASA TM-83199[R]. Washington DC, US: National Aeronautics and Space Administration, 1986.
|
| [15] |
DUNN M H, TARKENTON G M. Users’ manual for the Langley high speed propeller noise prediction program (DFP-ATP): NASA CR-4208[R]. Washington DC, US: National Aeronautics and Space Administration, 1989.
|
| [16] |
FARASSAT F, DUNN M H, SPENCE P L. Advanced propeller noise prediction in the time domain[J]. AIAA Journal, 1992, 30(9): 2337-2340. doi: 10.2514/3.11224
|
| [17] |
STUERMER A, YIN J. Low-speed aerodynamics and aeroacoustics of CROR propulsion systems: AIAA-2009-3134[R]. Miami, US: American Institute of Aeronautics and Astronautics, 2009.
|
| [18] |
ZACHARIADIS A, HALL C, PARRY A B. Contrarotating open rotor operation for improved aerodynamics and noise at takeoff[J]. Journal of Turbomachinery, 2013, 135(3): 031010. doi: 10.1115/1.4006778
|
| [19] |
稂仿玉, 杨晰琼, 贺象, 等. 对转桨扇设计参数对噪声水平影响的数值研究[J]. 航空精密制造技术, 2022, 58(3): 37-40, 43. LANG Fangyu, YANG Xiqiong, HE Xiang, et al. Numerical investigation on influence of design parameters of counter rotating prop-fan on aero-acoustics level[J]. Aviation Precision Manufacturing Technology, 2022, 58(3): 37-40, 43. (in Chinese doi: 10.3969/j.issn.1003-5451.2022.03.010
LANG Fangyu, YANG Xiqiong, HE Xiang, et al. Numerical investigation on influence of design parameters of counter rotating prop-fan on aero-acoustics level[J]. Aviation Precision Manufacturing Technology, 2022, 58(3): 37-40, 43. (in Chinese) doi: 10.3969/j.issn.1003-5451.2022.03.010
|
| [20] |
贺象, 赵振国, 舒太波, 等. 桨扇后掠降噪规律及声学机理数值研究[J]. 航空动力学报, 2023, 38(4): 939-948. HE Xiang, ZHAO Zhenguo, SHU Taibo, et al. Numerical investigation of noise reduction law and acoustic mechanism of the sweepback propfan[J]. Journal of Aerospace Power, 2023, 38(4): 939-948. (in Chinese
HE Xiang, ZHAO Zhenguo, SHU Taibo, et al. Numerical investigation of noise reduction law and acoustic mechanism of the sweepback propfan[J]. Journal of Aerospace Power, 2023, 38(4): 939-948. (in Chinese)
|
| [21] |
HE L, NING W. Efficient approach for analysis of unsteady viscous flows in turbomachines[J]. AIAA Journal, 1998, 36(11): 2005-2012. doi: 10.2514/2.328
|
| [22] |
GHORBANIASL G, HIRSCH C. Validation of a time domain formulation for propeller noise prediction[J]. International Journal of Aeroacoustics, 2006, 5(4): 295-310. doi: 10.1260/147547206779379895
|
| [23] |
NUMECA International. FINE™/Turbo 14.2 user guide [M]. Brussels: NUMECA International, 2020.
|
| [24] |
周亦成. 涡轮增压活塞螺旋桨部件法与对转桨扇可压升力面法反问题[D]. 北京: 北京航空航天大学, 2016. ZHOU Yicheng. Component-level model for turbocharging reciprocating engine propeller propulsion system and compressible lifting surface inverse method for contra-rotating propfan[D]. Beijing: Beijing University of Aeronautics and Astronautics, 2016. (in Chinese
ZHOU Yicheng. Component-level model for turbocharging reciprocating engine propeller propulsion system and compressible lifting surface inverse method for contra-rotating propfan[D]. Beijing: Beijing University of Aeronautics and Astronautics, 2016. (in Chinese)
|
| [25] |
SULLIVAN T J. Aerodynamic performance of a scale-model, counterrotating unducted fan[J]. Journal of Turbomachinery, 1990, 112: 579-586. doi: 10.1115/1.2927696
|
| [26] |
SMITH L H Jr. Unducted fan aerodynamic design[J]. Journal of Turbomachinery, 1987, 109: 313-324. doi: 10.1115/1.3262108
|
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