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Full-Text Articles in Engineering Physics
Reproducibility Distinguishability And Correlation Of Fireball And Shockwave Dynamics In Explosive Munitions Detonations, Bryan J. Steward
Reproducibility Distinguishability And Correlation Of Fireball And Shockwave Dynamics In Explosive Munitions Detonations, Bryan J. Steward
Theses and Dissertations
The classification of battlespace detonations, specifically the determination of munitions type and size using temporal and spectral features of infrared emissions, is a particularly challenging problem. The intense infrared radiation produced by the detonation of high explosives is largely unstudied. Furthermore, the time-varying fireball imagery and spectra are driven by many factors including the type, size and age of the chemical explosive, method of detonation, interaction with the environment, and the casing used to enclose the explosive. To distinguish between conventional military munitions and improvised or enhanced explosives, the current study investigates fireball expansion dynamics using high speed, multi-band imagery. …
Prediction Of The Temporal Evolution Of Solar X-Ray Flares, Aaron J. Williams
Prediction Of The Temporal Evolution Of Solar X-Ray Flares, Aaron J. Williams
Theses and Dissertations
A solar flare is an explosive release of stored magnetic energy on the Sun. Much of this energy is converted into x-ray photons which escape into space. As a solar flare begins, the 1-8 Å x-ray photon flux at Earth’s orbit, as measured by the GOES satellite, rapidly increases. It quickly reaches a peak and slowly decays. A plot of this flux exhibits an approximate lognormal shape. A lognormal function becomes a normal, symmetric, function when the logarithm of the independent variable is taken. Once the peak flux is reached, this symmetry is used to make a prediction of the …