The Hudson River emergency landing of US Airways Flight 1549 inspired aviation enthusiasts and citizens alike. The pilot's skill and composure were exceptional, clearly contributing to one of the most successful aircraft water ditchings possible. As we prepare for transition to a next-generation air transportation system, we are developing new technologies both to increase system capacity and e...

Runway surface conditions are fundamental to ensure safety during landing and takeoff operations of aircrafts. In this manner, airport operators required monitor the coefficient friction macrotexture runways maintain its plan maintenance rehabilitation strategies when appropriate, since both these parameters get deteriorated with time. Thus, assist aerodrome regulatory agencies in decision-maki...

This paper describes an analytic real-time emergency landing trajectory planner applicable in situations where an aircraft experiences severe damage or failure(s) that contract the feasible lateral plane flight envelope. Solutions are constructed as sequences of spirals that follow a reference arc, extending a traditional Dubins path solver to handle cases in which an aircraft cannot fly straig...

We introduce the MULTI-INTER-DISTANCE constraint that ensures no more than m variables are assigned to values lying in a window of p consecutive values. This constraint is useful for modelling scheduling problems where tasks of processing time p compete for m identical resources. We present a propagator that achieves bounds consistency in cubic time. Experiments show that this new constraint of...

Purpose Due to the static condition of wheels at touchdown, they skid on runway, which may cause tyres burn and wear. This phenomenon occurs in a fraction second, known as spin-up period. The purpose this paper is introduce new strategy reduce horizontal force, tyre temperature wear during Design/methodology/approach First, dynamics two different phases landing, namely, breaking phases, are rev...

Landing impact and runway unevenness have proximate consequence on performance of landing gear system and conduce to discomfort of passengers and reduction of the pilot’s capability to control aircraft. Finally, vibrations caused by them result in structure fatigue. Fuzzy logic controller is used frequently in different applications because of simplicity in design and implementation. In the pre...

BACKGROUND Orbiter landing data show decrements in pilot performance following spaceflight compared to preflight simulated landings. This study aimed to characterize pilot head-eye coordination during simulated orbiter landings, and relate findings to microgravity-related spatial disorientation. METHODS Orbiter landings were simulated in an A340-300 simulator flown by six pilots. Turns about ...

Experiments examined the accuracy of visual touchdown point perception during oblique descents (1.5 degrees -15 degrees ) toward a ground plane consisting of (a) randomly positioned dots, (b) a runway outline, or (c) a grid. Participants judged whether the perceived touchdown point was above or below a probe that appeared at a random position following each display. Although judgments were unac...

The Web-based Weather Expert System (WES) is a critical module of the Virtual Test Bed development to support “go/no go” decisions for Space Shuttle operations in the Intelligent Launch and Range Operations program of NASA. The weather rules characterize certain aspects of the environment related to the launching or landing site, the time of the day or night, the pad or runway conditions, the m...

Whenever traffic density becomes so critically high that it begins to jeopardize efficiency and safety, the answer lies in the ability to improve traffic coordination and movement precision. This study considers the surface-traffic problem at major airports, and establishes the possibility of highprecision taxi operations by applying state-of-the-art automatic control technologies. Due to the h...