SPECIAL NOTICE
99 -- TECHNOLOGY TRANSFER OPPORTUNITY: Propeller/Rotor Phase Control for Reduction of Community Noise from Distributed Propulsion Vehicles (LAR-TOPS-308)
- Notice Date
- 12/20/2019 12:04:05 PM
- Notice Type
- Special Notice
- NAICS
- 927110
— Space Research and Technology
- Contracting Office
- NATIONAL AERONAUTICS AND SPACE ADMINISTRATION US
- ZIP Code
- 00000
- Solicitation Number
- T2P-LaRC-00031
- Response Due
- 12/18/2020 2:00:00 PM
- Archive Date
- 01/02/2021
- Point of Contact
- Langley Research Center
- E-Mail Address
-
LARC-DL-technologygateway@mail.nasa.gov
(LARC-DL-technologygateway@mail.nasa.gov)
- Description
- NASA�s Technology Transfer Program solicits inquiries from companies interested in obtaining license rights to commercialize, manufacture and market the following technology. License rights may be issued on an exclusive or nonexclusive basis and may include specific fields of use.��NASA provides no funding in conjunction with these potential licenses. THE TECHNOLOGY: Community noise has been identified as a major barrier to entry-into-service of unmanned aerial vehicles (UAVs) and urban air mobility (UAM) platforms.� For these applications, distributed electric propulsion (DEP) systems are becoming increasingly popular because of their ability to distribute propulsors in many locations on the vehicle.� New small/medium UAV's and UAM's, and thin/short haul aircraft concepts and demonstrators exploit DEP systems for different purposes.� However, given the problem of community noise, NASA engineers have modified the vehicle noise directivity pattern by controlling the relative angular positions of the propulsors blades, in order to direct noise away from sensitive areas. This innovation comprises a method of adjusting the relative angular positions of the propeller and/or rotor blades from a distributed propulsion system to favorably modify the spatial distribution of noise emanated by the vehicle, that is, the directivity pattern, for the purpose of reducing community noise.� Adjusting these angular positions shows a great ability to act as a noise-canceling technique by way of destructive wave interference.� Effectively, the acoustic energy can be steered away from noise-sensitive areas, e.g., schools, communities, etc. In the initial implementation, the phase angles can be calculated prior to flight.� These depend on the propeller/rotor rotation rate, observer location, and relative propeller/rotor spacing, the latter being constant for a given vehicle.� Optimization techniques determine the set of phase angles over the parametric space. To express interest in this opportunity, please submit a license application through NASA�s Automated Technology Licensing Application System (ATLAS) by visiting https://technology.nasa.gov/patent/LAR-TOPS-308 If you have any questions, please contact Langley Research Center at LARC-DL-technologygateway@mail.nasa.gov� with the title of this Technology Transfer Opportunity as listed in this FBO notice and your preferred contact information.� For more information about licensing other NASA-developed technologies, please visit the NASA Technology Transfer Portal a�https://technology.nasa.gov/ These responses are provided to members of NASA�s Technology Transfer Program for the purpose of promoting public awareness of NASA-developed technology products, and conducting preliminary market research to determine public interest in and potential for future licensing opportunities.��No follow-on procurement is expected to result from responses to this Notice.
- Web Link
-
SAM.gov Permalink
(https://beta.sam.gov/opp/3c0d1bf653c04d74913d375cdbfe67a9/view)
- Record
- SN05522241-F 20191222/191220230150 (samdaily.us)
- Source
-
SAM.gov Link to This Notice
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