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...

Autonomous fixed-wing UAV landing based on differential GPS is now a mainstream providing reliable and precise landing. But the task still remains challenging when GPS aviability is limited like for military UAV’s. We discuss a solution of this problem based on computer vision and dot markings along stationary or makeshift runway. We focus our attempts on using infrared beacons along with narro...

I TOUCHED BRIEFLY ON THE evolution of runway visual range (more commonly known as “RVR”) in my article about approach light systems (“Lights, Camera, Action!” August IFRR). This article discusses low-visibility operations and the differences between visibility and RVR, both from the regulatory and operational viewpoints. Because some readers make their living by flying under “for-hire” rules, I...

A full scale snow melting system with heat pipe technology is built in this work, which avoids the negative effects on concrete structure and environment caused by traditional deicing chemicals. The snow melting, ice-freezing performance and temperature distribution characteristics of heat pipe concrete runway were discussed by the outdoor experiments. The results show that the temperature of t...

Spontaneous departure from the female was observed in male rats during testing of instrumental sexual responses. Male rats were tested in an apparatus consisting of two compartments connected by a runway composed of four parallel corridors. The final corridor of the runway and the goal compartment as well as the goal compartment and the start compartment were connected by one-way doors enabling...

This paper deals with how to develop a model to forecast air passenger demand and to evaluate some policy scenarios related with runway and passenger terminal capacity expansion to meet the future demand. System dynamics frameworks can be used to model, to analyze and to generate scenario to increase the system performance because of its capability of representing physical and information flows...

The degree to which formal veriication methods are adopted in practice depends on concrete demonstrations of their applicability on real-world examples. In this paper, we present our eeorts in this regard involving a commercial high-speed split-transaction bus called the Runway. Modern busses such as the Runway deal with so many intertwined and complex issues that successful application of form...

The capacity of a runway system represents a bottleneck at many international airports. The current practice at airports is to land approaching aircraft on a first-come, first-served basis. An active rescheduling of aircraft landing times increases runway capacity or reduces delays. The problem of finding an optimal schedule for aircraft landings is referred to as the “aircraft landing problem”...

This paper analyzes arrival flight track data at Chicago (ORD) and Atlanta (ATL) airports. We investigate distributions of vertical and lateral position at different distances from the runway threshold in instrument meteorological conditions (IMC) and visual meteorological conditions (VMC). In IMC, the observed standard deviations at different distances are similar between the two airports. The...