National Transportation Systems Center Advancing transportation innovation for the public good US Department of Transportation Office of the Secretary of Transportation John A Volpe National Transportation Systems Center ID: 1011578
Download Presentation The PPT/PDF document "UAS noise certification The" is the property of its rightful owner. Permission is granted to download and print the materials on this web site for personal, non-commercial use only, and to display it on your personal computer provided you do not modify the materials and that you retain all copyright notices contained in the materials. By downloading content from our website, you accept the terms of this agreement.
1. UAS noise certificationThe National Transportation Systems CenterAdvancing transportation innovation for the public goodU.S. Department of TransportationOffice of the Secretary of TransportationJohn A. Volpe National Transportation Systems CenterAugust 28, 2018David A. Senzig and Dr. Mehmet Marsan
2. How are crewed aircraft certificated?Fixed wing aircraftCFR Title 14, Part 36, Appendix A and B – Transport and jet airplanesAppendix G – small propeller-driven airplanesRotary wing aircraftAppendix H – above 7,000 poundsAppendix J – below 7,000 poundsTilt-rotor aircraftAppendix K
3. UAS CertificationCFR Title 14, Part 36, Appendix G
4. UAS CertificationCFR Title 14, Part 36, Appendix J
5. UAS Appendix G Measurement setupGround-plate setup:Microphones were placed at 0.75r from the center of the plate along a radius normal to the UAS flight direction as described in 14 CFR Part 36 appendix G
6. UAS Noise certification test exampleAppendix G certification test of Navmar TigerSharkTest conducted at Griffiss Airport in Rome, New YorkMay 17, 2016Supported by Navmar, Northeast UAS Airspace Integration Research Alliance, Mississippi State UniversityObjectives:Determine noise levels of a middle weight (400 lb) UAS Aircraft does not meet noise certification requirements
7. UAS noise measurementsUAS typeWeight (lb)OperationMicrophone configurationLamax @ 400'Data qualityAeroVironment PUMAFixed wing13.4TakeoffIGPM37.9CertInsitu Scan EagleFixed wing46TakeoffIGPM57.8CertNavmar TigerSharkFixed wing397TakeoffIGPM90.8Cert QualityNavmar TigerSharkFixed wing397Level overflightPole84.9Cert QualityEdge 540 Fixed wing25Level overflightMOP53.4ResearchDJI Phantom 2Quadcopter3.5Level overflightMOP44.9ResearchPrioria HexHexcopter5.5Level overflightMOP45.9ResearchIGPM: Inverted Ground Plane MicrophoneMOP: Microphone on a PlatePole: Tripod supported Pole Microphone at 4 foot
8. UAS NoiseFlight tests at VolpeInitial tests were tethered (March, April 2016)Test of new instrumentation system, July 2017 (after Part 107 authority granted)
9. UAS NoiseOperations will be different from crewed aircraftPotentially much closer to peoplePotentially maneuvering much closer to peopleNumbers of operations may be differentPossibly newly exposed populationsNoise certification is intended to provide a means of comparing vehiclesNoise certification is not intended to provide a means of determining annoyance or acceptability
10. Next StepsNeed to understand current sUAS operational and vehicle noise sourcesNeed to understand limits to technology to minimize sUAS noise Need to understand human response to sUAS noise