A Numerical Study of the Effects of Aircraft Manoeuvers on the Focussing of Sonic Booms,
Abstract
The effects of aircraft maneuvers on the focusing of sonic booms are investigated for a model atmosphere which is piecewise linear in wind and sound speeds, and piecewise constant in wind direction. Ray-tube areas and trajectories are obtained in closed form for a real atmosphere with winds and aircraft in arbitrary maneuvers. A mathematical formalism is developed for identifying the focusing ray in general maneuvers, leading to a direct and accurate determination of the caustic surface ground intercept. The algorithms derived in the analysis complement those of Hayes to form the basis for a computer program for predicting sonic boom properties. There appears to be a ten-fold reduction in computing time as compared with the Hayes-Haefeli program. (Modified author abstract)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 1973
- Accession Number
- AD0775095
Entities
People
- Ronald O. Onyeonwu
Organizations
- University of Toronto