Systemic solutions
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Automobile Industry
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Low Noise Solution For Intake And Exhaust Systems
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Interior Product Performance Optimization And Cost Reduction Solutions
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Low Noise Solution For Hydrogen Fuel Cell System
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Low Noise Solution For Vehicle Electric Drive System
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Low Noise Solution For Vehicle Air Conditioning System
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Vehicle Damping Layout Optimization And Lightweight Solutions
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Aviation Industry
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Material Industry
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Other Industry
Low noise solution for aviation APU auxiliary power system
1. Introduction to the background of auxiliary power unit noise
· The main noise concern is apron noise:
· ICAO ANNEX16 Appendix C and OEM complete machine level design requirements
ICAO ANNEX Part 16 C apron noise (Ramp Noise) requirements
ICAO ANNEX Part 16 C apron noise (Ramp Noise) requirements
Points of concern in apron noise evaluation
2. APU auxiliary power system noise sources
· Sound source 1: Noise from the air intake system of the auxiliary power unit;
· Sound source 2: Exhaust system noise;
· Sound source 3: Noise radiated by the APU body. Since it is located in the tail vertebra, this noise can be ignored.
3. BOACH auxiliary power unit low noise solution
3.1 Materials—>Components—>System-level engineering and technical services
· Material level:
· Based on the sound lining configuration, honeycomb panel sound-absorbing structure design and performance test verification;
· Component level:
· Design, pressure loss/distortion evaluation, acoustic design and performance testing based on the intake/exhaust silencer;
· System level:
· Carry out system-level performance evaluation in terms of fluids and acoustics based on system-level pipelines, and conduct energy matching tests in combination with customized test benches;
· On-machine verification:
· Provide customized noise reduction sample production and on-machine testing services for APU intake and exhaust piping systems.
Material-level testing and customization services
Component level technical services
System level design services
Installation level product verification
3.2 Development of customized analysis software and test bench:
· Customized software development:
· Used for rapid estimation in projects to obtain the noise level of the apron under the preliminary layout plan;
· Set and decompose noise reduction indicators based on the noise level;
· Application cases:
· Currently, we have completed technical services, customized software development, and customized development of test benches for multiple models.
APU air intake silencer performance test bench
Apron noise prediction and index setting software
Contact us
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Room 901, Building 1, Phase 2, Yungu Phase 2, Fengxi New Town, Xixian New District, Xixian New District, Xi'an City, Shaanxi Province
Room 307, Building 1, Harbin Institute of Technology Robot Industrial Park, No. 488 Qianjin East Road, Economic Development Zone, Kunshan City, Jiangsu Province
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