Wake vortices are a safety hazard to landing aircraft. A landing aircraft that encounters a wake may roll, resulting in a fatal crash if the roll is severe enough and/or if the aircraft is low enough to the ground. Therefore, aircraft are separated by a sufficient distance to ensure that wakes have time to decay in strength. However, because of the inherent variability in wake behavior and airc...

A piloted flight simulator study investigated pilot control behavior while self-separating from a proximate aircraft during an instrument landing system approach. This “paired approach” operational concept pairs two aircraft, with the trail aircraft of the pair remaining within a safe zone calculated to be free (for a specified period of time) from collision danger and wake turbulence interacti...

Background: There is a growing need to reduce significantly the noise generated by high-performance, supersonic military aircraft. The noise generated during takeoff and landing on aircraft carriers has direct impact on shipboard health and safety issues. Also, noise complaints are increasing as communities move closer to military bases or when there are changes due to base closures and realign...

The potential hazard of one aircraft encountering the trailing vortex wake of another aircraft during either take-off or landing is well known. The wake vortex hazard in the terminal area has been virtually eliminated using the operational procedures and aircraft separation criteria mandated by the air traffic authorities. This paper presents arguments that wake encounters at cruise altitude ar...

Landing gear suspension systems fulfill the tasks of absorbing the vertical energy of the touch-down as well as providing passenger and crew comfort with a smooth ground ride before take-off and after landing. They are also designed to have optimal performance in the case of a hard landing. In general, the tasks of aircraft landing gears are complex and sometimes lead to a number of contradicto...

Landing gear is a structural component of an aircraft to support the weight while it is on the ground and also to aid safe landing. A generic analytic model for linear dynamic analysis of landing gears, which captures responses of individual components, is seldom available in literature. In the present work an analytical model for the linear response analysis of landing gear is developed. The l...

Purpose The purpose of this study is to test the performance designed automatic control system based on Linear Quadratic Regulator (LQR) and Gaussian (LQG) algorithms during landing helicopter ship deck. This paper a further development series Topczewski et al. (2020). Design/methodology/approach consists two LQR LQG. It integrated with motion prediction autoregressive algorithm parameters calc...

Landing gear is an essential part of aircraft. However, the components landing are susceptible to degradation over life their operation, which can result in shimmy effect occurring during take-off and landing. In order reduce unplanned flight disruptions increase availability aircraft, predictive maintenance (PdM) technique investigated this study. This paper presents a case study on implementa...

Managing the interval between arrival aircraft is a major part of the en route and TRACON controller’s job. In an effort to reduce controller workload and low altitude vectoring, algorithms have been developed to allow pilots to take responsibility for, achieve and maintain proper spacing. Additionally, algorithms have been developed to create dynamic weather-free arrival routes in the presence...

Unmanned aerial vehicles (UAVs) are increasingly replacing manned systems in situations that are either too dangerous, too remote, or too difficult formanned aircraft to access. Modern UAVs are capable of accurately controlling their position and orientation in space using systems such as the Global Positioning System (GPS) and the Attitude and Heading Reference System (AHRS). However, they are...