This study examines the 20-year impacts of emissions from all commercial aircraft flights worldwide on climate, cloudiness, and atmospheric composition. Aircraft emissions from each individual flight worldwide were modeled to evolve from the subgrid to grid scale with the global model described and evaluated in Part I of this study. Simulations with and without aircraft emissions were run for 2...

Situational awareness and decision-making are necessary to identify and select the optimal set of mutually non-exclusive hypothesis in order to maximize mission success by adapting system behavior accordingly. This paper presents a hierarchical and decentralized approach for integrated damage assessment and trajectory re-planning in aircraft with uncertainties in navigational decision-making. A...

Regulatory agencies worldwide are working towards safely integrating unmanned aircraft into their respective national airspaces. Reliability assessment of unmanned aircraft is a key step in the certification process. This thesis presents an analysis framework for the reliability assessment of small unmanned aircraft. Specifically, the effect of the placement of actuators and control surfaces on...

Aircraft conflict avoidance is a critical issue in Air Traffic Management, which can be addressed, among others, by means of Mixed Integer Non-Linear Programming (MINLP) techniques. In this work we introduce a new approach to address, via velocity regulation, the problem of avoiding conflict for a set of aircraft flying in an air sector at cruise flight. Speed variations for all aircraft are to...

Experts from various aircraft sub-domains have to collaborate in order to design an aircraft system. Each sub-domain thereby focuses on a particular aspect of the system and uses special software tools to model those aspects and run various calculations. As those models partially overlap, inconsistencies can occur that might lead to delays in the design process or malfunctions of the aircraft s...

An aircraft is said to be operated in a trim condition when the body axis accelerations are zero. In other words, no resultant forces or torque act on the aircraft. The purpose of the longitudinal controller of an aircraft is to help pilots to move the aircraft from one trim condition to another, or to stabilize the aircraft in an operating trim condition while the aircraft is subjected to dist...

It is of great significance to identify and clarify the circumstances and causes of any aircraft accident which will help avoid similar accidents in the future. Besides attribution of various aircraft accidents to avionic causes, bad weather is another prime cause for accidents of many aircraft and helicopters in India. But hardly any study is available in this regard in India using their longp...

In military operations, logistics distribution involves the transportation of equipment, people and sustainment (resources) to various physical locations, known as distribution nodes. The quantity of items being transported is often very large and the resources need to be moved as quickly as possible using the available transportation assets. A complicating factor is that the airports at the di...

CONTEXT Installation of automated external defibrillators (AEDs) on passenger aircraft has been shown to improve survival of cardiac arrest in that setting, but the cost-effectiveness of such measures has not been proven. OBJECTIVE To examine the costs and effectiveness of several different options for AED deployment in the US commercial air transportation system. DESIGN, SETTING, AND SUBJE...

FAA’s NextGen program aims to increase the capacity of the national airspace, while ensuring the safety of aircraft. This paper provides a distributed merging and spacing algorithm that maximizes the throughput at the terminal phase of flight, using information communicated between neighboring aircraft through the ADS-B framework. Aircraft belonging to a mixed fleet negotiate with each other an...