Nomenclature (contlnued) The paper discusses the development and testing of a real-time Takeoff Performance M Pitching moment (ft_lb) Monitoring System. The algorithm is madeup of two MACH Mach number segments: a pretakeoff segment and a real_time p Roll Rate (rad/sec) segment, q Pitch Rate (rad/sec) One_time inputs of ambient conditions and r Yaw Rate (rad/sec) airplane configuration informati...

Due to the large increase in the density of aircraft arrivals at airports in recent years, it has become important to optimize the scheduling of aircraft landings in order to reduce wait time, improve airport efficiency, and minimize fuel consumption while maintaining safety. As the density of aircraft arrivals increases, however, so too does the complexity of trajectory planning and generation...

Traffic flow in the Terminal Radar Approach Control Facilities (TRACON) is a significant factor in determining airport throughput capacity and airline operational efficiency. In recent years the availability of high fidelity terminal area track data has made it possible to increase the granularity of airport and airspace performance analysis. This paper describes a methodology for airport arriv...

In this paper we examine a model for the landing procedure of aircrafts at an airport. The characteristic feature here is that due to air turbulence the safety distance between two landing aircrafts depends on the types of these two machines. Hence, an efficient routing of the aircraft to two runways may reduce their waiting time. First, we use M/SM/1 queues (with dependent service times) to mo...

This paper describes our experience in using a multimedia project management and software engineering environment, Decision-based Hyper-multimedia CASE (DHC), to support the Low-Visibility Landing and Surface Operations (LVLASO) project at the NASA Langley Research Center. 1 The purpose of the LVLASO project is to allow pilots to land and taxi airplanes when visibility is impeded due to adverse...

ai = time aircraft i lands after the preferred landing time Pi (i 1; . . . ; N) bi = time aircraft i lands before the preferred landing time Pi (i 1; . . . ; N) C = cost coefficient vector defined in the linear programming problem Ei = earliest landing time for aircraft i (i 1; . . . ; N) fi = penalty cost per unit of time if aircraft i lands before the preferred landing time Pi (i 1; . . . ; N...

As an alternative to walking and running, humans are able to skip. However, adult humans avoid it. This fact seems to be related to the higher energetic costs associated with skipping. Still, children, some birds, lemurs and lizards use skipping gaits during daily locomotion. We combined experimental data on humans with numerical simulations to test whether stability and robustness motivate thi...

This paper is concerned with autonomous flight of UAVs and proposes a fuzzy logic based autonomous flight and landing system controller. Besides three fuzzy logic controllers which are developed for autonomous navigation for UAVs in a previous work as fuzzy logic based autonomous mission control blocks, three more fuzzy logic modules are developed under the main landing system for the control o...

In order to determine the required visual frame rate (FR) for minimizing prediction errors with out-the-window video displays at remote/virtual airport towers, thirteen active air traffic controllers viewed high dynamic fidelity simulations of landing aircraft and decided whether aircraft would stop as if to be able to make a turnoff or whether a runway excursion would be expected. The viewing ...