We present a case of gelastic seizures in a student naval aviator. He was noted to have uncontrollable fits of laughter on several occasions, but was not referred to his flight surgeon until he had a gelastic seizure while flying in formation, which jeopardized the safety of the flight. He had an aura consisting of lack of concentration, which was then followed by 10 s or less of hysterical lau...

Shape-memory actuators are used where a large force and stroke are required and thermodynamic efficiency is not essential. Since the discovery of shape memory in titanium-nickel, a number of inventions have been made having applications in medicine, aerospace, automotive, and consumer products. These devices range in size from meters to micrometers. Sales are now more than a hundred million USD...

ARTICLE II. VISION, MISSION, AND GOALS A. Vision: The international leader in aerospace medicine and human performance. B. Mission: Apply and advance scientific knowledge to promote and enhance health, safety, and performance of those involved in aerospace and related activities. C. Definition: As used in this document, Aerospace Medicine is the multi-disciplinary application of professional an...

In aerospace medicine, attention focuses on the effects of the loss of gravitational pull on the body. The more fundamental question involved is the basic physiology of anti-gravity mechanisms upon the body. From this viewpoint, the entire spectrum of the consequences of weightlessness may be seen. Then evidence affirming the broad concept of sensory deprivation in general, and anti-gravity dep...

The present paper is an introductory and survey paper of the treatment of realistically modelled optimal control problems from applications in the aerospace eld. Especially those problems are considered which include diierent types of constraints. In the tutorial part of the paper, recipes are given for the treatment of optimal control problems for which, among other constraints, control and/or...

The paper presents a certainty equivalence output feedback backstepping adaptive control design method for the systems of any relative degree with unmatched uncertainties without over-parametrization. It uses a fast prediction model to estimate the unknown parameters, which is independent of the control design. It is shown that the system’s input and output tracking errors can be systematically...

NASA is investigating passive wireless sensor technology to reduce instrumentation mass and volume in ground testing, air flight, and space exploration applications. Vehicle health monitoring systems (VHMS) are desired on all aerospace programs to ensure the safety of the crew and the vehicles. Pervasive passive wireless sensor networks facilitate VHMS on aerospace vehicles. Future wireless sen...

This paper features the combination of model-based predictive control and dynamic inversion into a constrained and globally valid control method for fault-tolerant flight-control purposes. The fact that the approach is both constrained and model-based creates the possibility to incorporate additional constraints, or even a new model, in case of a failure. Both of these properties lead to the fa...

∗ Department of Control Science and Engineering, Tongji University, Shanghai, 201804, P. R. China (e-mail: [email protected]). ∗∗ Department of Aerospace and Mechanical Engineering, Boston University, Boston, MA 02215, USA (e-mail: [email protected]). ∗∗∗ Department of Control Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, P. R. China (e-mail: zhguan@...