Mach cut-off is a regime of supersonic flight where an aircraft flies just slightly supersonic, perhaps Mach 1.0 to 1.15, at altitudes where the sonic boom never reaches the ground. Some companies would like to operate civilian supersonic aircraft at these speeds over land. To assess the technical viability and public reaction of this concept, ASCENT Project 42 is conducting research to provide a basis of feasibility for the concept for FAA.. This project is examining Mach cut-off sonic boom propagation through realistic atmospheric conditions, determining appropriate noise metrics to predict annoyance due to Mach cut-off sounds, assessing the potential for laboratory-scale measurements, and providing technology assessment for industry.
- Perceptual characterization of Mach cut-off Sonic Booms
- An improved Mach cut-off model based on a 3-D ray tracing method and realistic atmospheric data
- Aviation noise impacts: state of the science
- Laboratory test bed for sonic boom propagation
- Sensitivity analysis of supersonic Mach cut-off flight
- Subjective study on attributes related to Mach cut-off sonic booms
- Preliminary assessment and extension of an existing Mach cut-off model