Autonomous control of UAVs has become a popular research topic in recent years. This paper is concerned with the flight of UAVs (Unmanned Aerial Vehicles) and proposes fuzzy logic based autonomous flight and landing system controllers. Three fuzzy logic modules are developed under the main navigation control system and three more for the autonomous landing control system to control of the altit...

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 ...

Midodrine prevents post-space flight orthostatic intolerance when testing is conducted in a controlled laboratory setting within 2-4 hours after Space Shuttle landing. It is unknown if midodrine is as effective during re-entry and immediately following landing. METHODS: Cardiovascular responses to 10 minutes of 80° head-up tilt in five male astronauts were compared before and immediately after ...

ly, the runway scheduling problem (RSP) can be thought of as a job shop scheduling problem [11] with precedence and release time constraints, where the objective is to sequence a set of jobs (aircraft) in a particular order to be processed by a processor (runway) so that some cost function is minimized. For the runway scheduling problem, one wants to find an efficient schedule for aircraft to u...

The role of computers in aviation is extensive and growing. Many crucial systems, both on board and on the ground, rely for their correct operation on sophisticated computer systems. This dependence is increasing as more and more functionality is implemented using computers and as entirely new systems are developed. Several new concepts are being developed specifically to address current safety...

.. Runway incursions are a persistent problem in airport ground-movement operations. Numerous critical conflicts and several fatal accidents have occurred as a result of unauthorized or otherwise inappropriate entry of aircra& or surface vehicles onto an active runway. Many of these conflicts developed quickly, leaving little time for effective intervention by either the controller or the pilot...

A IRCRAFT-GENERATEDwakevortices pose a potential risk to following aircraft in various flight phases, whereas most wakevortex encounters are reported for approach and landing and for takeoff and climb [1]. The International Civil Aviation Organization (ICAO) wake-vortex aircraft separation standards [2] established in the 1970s increasingly degrade aviation efficiency when traffic congestion li...

This paper introduces an integrated framework and software platform that uses a three layer approach to modeling complex systems. The multi-layer PRA approach implemented in IRIS (Integrated Risk Information System) combines the power of Event Sequence Diagrams and Fault Trees for modeling risk scenarios and system risks and hazards, with the flexibility of Bayesian Belief Networks for modeling...

Unmanned aerial vehicles are robots controlled by commands sent from the ground control station. While fixed-wing aircraft have advantages of long range and high altitude, they need a runway to create sufficient lift on wings. The advantage Rotary Wing Aircraft is that it does not runway, can perform vertical take-off landing. It hover. Thanks these features, used in tasks such as surveillance,...