T HE JET age of aircraft design and the rocket age which promises to follow have brought entirely new problems to aviation medicine. These aircraft, flying at supersonic speeds, require longer time periods to complete even simple maneuvers. The accompanying prolonged accelerations will create rapidly increasing demands on cardiovascular function and the nervous system. The problem of dealing wi...

Near-field acoustical holography has been shown to be a useful tool for visualizing jet noise fields. It has been applied to a full-scale jet on an installed military aircraft with promising results, but the source characteristics in the extreme near field have been difficult to characterize because of the interference of acoustic reflections off the rigid reflecting plane beneath the jet. To p...

The practical use of high-fidelity multidisciplinary optimization techniques in low-boom supersonic business-jet designs has been limited because of the high computational cost associated with computational fluid dynamics-based evaluations of both the performance and the loudness of the ground boom of the aircraft. This is particularly true of designs that involve the sonic boom loudness as eit...

This paper presents a novel two phase method that combines one class support vector machine classifiers classifiers using combination rules to quantitatively assess the degree of abnormality at various heights during individual aircraft descents and also over the whole descent. Whilst classifiers have been combined before in the literature with success, it is the first time they have been appli...

The continuing development of fully autonomous aircraft requires advanced sensing and control systems in order to complete difficult tasks such as aerial refueling and close formation flight. To accomplish such maneuvers, an aircraft must be able to measure the location of nearby aircraft and position itself relative to these other flight vehicles. In visually degraded environments where vision...

We describe tests of a shrouded aerosol inlet for a high-altitude jet aircraft. Both the lip of the inlet and the shroud are NACA (National Committee for Aeronautics, now known as NASA, or National Aeronautics and Space Administration) airfoils. Wind tunnel tests show a smooth growth of the boundary layer in the inlet, with an undisturbed core more than I m back from the entrance. The shroud ma...

The practical use of high-fidelity multidisciplinary optimization techniques in low-boom supersonic business jet designs has been limited because of the high computational cost associated with CFD-based evaluations of both the performance and the loudness of the ground boom of the aircraft. This is particularly true of designs that involve the sonic boom loudness as either a cost function or a ...