Journal article
Reduced-Order Model for Supersonic Transport Takeoff Noise Scaling with Cruise Mach Number
Journal of aircraft, Vol.61(4), pp.1155-1168
07/01/2024
Appears in Aviation Sustainability Center (ASCENT)
Abstract
The recent interest in the development of supersonic transport raises concerns about an increase in community noise around airports. As noise certification standards for supersonic transport other than Concorde have not yet been developed by the International Civil Aviation Organization, there is a need for a physics-based scaling rule for supersonic transport takeoff noise performance. Assuming supersonic transport takeoff noise levels are dominated by the engine mixed jet velocity and the aircraft-to-microphone propagation distance, this paper presents a reduced-order model for supersonic transport takeoff noise levels as a function of four scaling groups: cruise Mach number, takeoff aerodynamic efficiency, takeoff speed, and number of installed engines. This paper finds that, as cruise Mach number increases, supersonic transport takeoff noise levels increase while their thrust cutback noise reduction potential decreases. Assuming constant aerodynamic efficiency, takeoff speed, and number of installed engines, the takeoff noise levels and noise reduction potential of a Mach 2.2 aircraft are found to be similar to 15.3 dB higher and similar to 19.2 dB less compared to a Mach 1.4 aircraft, respectively. This scaling rule can potentially yield a simple guideline for estimating an approximate noise limit for supersonic transport, depending on their cruise Mach number.
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Details
- Title
- Reduced-Order Model for Supersonic Transport Takeoff Noise Scaling with Cruise Mach Number
- Creators
- Laurens J. A. Voet - Massachusetts Institute of TechnologyPrakash Prashanth - Massachusetts Institute of TechnologyRaymond L. Speth - Massachusetts Institute of TechnologyJayant S. Sabnis - Massachusetts Institute of TechnologyChoon S. Tan - Massachusetts Institute of TechnologySteven R. H. Barrett - Massachusetts Institute of Technology
- Publication Details
- Journal of aircraft, Vol.61(4), pp.1155-1168
- Academic Unit
- Aviation Sustainability Center (ASCENT); Emissions
- Publisher
- Amer Inst Aeronautics Astronautics
- Number of pages
- 14
- Grants
- 13-C-AJFE-MIT-052, Federal Aviation Administration (United States, Washington) - FAA13-C-AJFE-MIT-074, Federal Aviation Administration (United States, Washington) - FAA
- Grant note
- U.S. Federal Aviation Administration (FAA) Office of Environment and Energy through ASCENT 13-C-AJFE-MIT; ASCENT10 / FAA Award FAA Center of Excellence for Alternative Jet Fuels
- Identifiers
- 99901140739501842
- Language
- English
- Resource Type
- Journal article