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The increasing availability of cheap and powerful drones for various applications is likely to cause a heavy usage of the very low level airspace in metropolitan areas with hundreds of simultaneously airborne drones per square kilometer in the near future. Certainly, the predicted large number of drones presents a major challenge to future UTM and especially to supporting communications systems. However,...
Air traffic demand around the world is forecasted to increase, and will therefore put additional strain on the air traffic management system currently used. In the sectorless airspace concept, air traffic controllers are no longer tied to sectors of airspace, but to specific flights. Each controller will maintain radio contact with several aircraft and guide them from the entry to the exit of the...
This paper presents an unmanned aerial system (UAS) for preliminary validation of radio navigation aids before an actual flight inspection is performed. The invented UAS consists of two parts. Firstly, a novel electromagnetic interference-free (EMI-free) unmanned aerial vehicle (UAV), also known as drone. This UAV aims to avoid EMI noise which is a major issue of onboard electronic hardware and radio...
Wind gradients affect the accuracy of 4D trajectories (4DT) in several ways: a) wind shear encountered by the aircraft along a climb or descent segment translate into a pseudo-force present in the inertial reference frame; b) gradients of the wind speed along the path could introduce modeling errors due to acceleration; and c) variations of the wind vector taken at the same location but different...
Ever increasing demands and challenges in the aviation industry provoke the global attention to seek for innovative solutions. Fixed-Flight Path Angle (FPA) descent and Ground-Based Augmentation System (GBAS) Landing System (GLS) are considered to be two potential approaches for efficient arrival operations in a Continuous Descent Operations (CDO) implemented future air traffic management system....
The combined transit of departure flights from the airport surface, through the terminal airspace and merging into overhead en route traffic streams is a major source of delay in the National Airspace System (NAS). This is especially true in metroplex regions where departures and arrivals from/to multiple, proximate airports compete for limited resources (e.g., mixed-use runways, shared departure-fixes,...
Continuous Descent Operations with Controlled Times of Arrival (CTA) at one or several metering fixes could enable environmentally friendly procedures without compromising capacity. This type of flight operation requires advanced on-board systems not only able to compute a plan satisfying Required Times of Arrival (RTAs), but also to safely and efficiently guide the aircraft during the execution of...
The NASA sponsored Hyper-Spectral Communications and Networking for Air Traffic Management (ATM) (HSCNA) project is conducting research to improve the operational efficiency of the future National Airspace System (NAS) through diverse and secure multi-band, multi-mode, and millimeter-wave (mmWave) wireless links. Worldwide growth of air transportation and the coming of unmanned aircraft systems (UAS)...
Today's commercial and military aircraft utilize many different avionics data and video bus technologies including MIL-STD-1553, ARINC 429, ARINC 664, Fibre Channel, Time-Triggered Ethernet, and ARINC 818. Avionics designers want to insert high-speed networking technology while still utilizing data bus technologies already integrated and proven. The array of data buses can be confusing, and it isn't...
ARINC 818 standardizes the Avionics Digital Video Bus (ADVB). It is a protocol for low latency, high bandwidth, digital video transmission in both commercial and military applications. This whitepaper will discuss the history, background, and provide information on competing technologies.
In traditional wired or cellular communication, the communication scenario and channel are fixed. However, with an increasing interest in air-ground integrated communication network, communication scenario transition caused by dynamic and high-movement nodes happens frequently, resulting in deteriorating reliability of communication. In this paper, a time-varying channel model is proposed to describe...
The size and complexity associated with software that monitors, controls, and protects flight critical products continues to grow. This is compounded by an increased use of autonomous systems which are just as complex, if not more so, since many operator responsibilities are supported and replaced by software in unmanned systems. Further, these systems are subject to cyber-enabled attacks, thereby...
Touch screen technology is rapidly and progressively entering the world of commercial avionics and being introduced inside the cockpit. This paper presents the main results of a piloted experiment conducted by the Netherlands Aerospace Centre (NLR) as part of the ACROSS (Advanced Cockpit for Reduction Of StreSs and workload) project of the EU's 7th Frame Work Programme, see www.across-fp7.eu. The...
Pilot spatial disorientation can result from a variety of human sensing error from which this paper concentrates on the investigation of the illusion impacts on pilot performance. The Coriolis illusion is among the most dangerous of all vestibular illusions. Experimental measurements were performed on a flight simulator and disorientation demonstrator specifically designed for demonstration of the...
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