one of the major problems facing the aircraft industry is the machining of the engine parts. amongst the numerous parts in a jet engine are intricate parts made of special alloys for high temperature service, namely nickel,chromium and titanium alloys. these alloys are usually very difficult to machine, which creates problems in this respect. the necessity of quality control in each stage of pr...

On Dec.12, 1985, a military charter DC-8 crashed shortly after takeoff at Gander, Nfld., Canada. All 256 aboard were killed, making this the deadliest U.S. military aircraft accident in history. The investigation team (consisting of forensic pathologists, odontologists, radiologists, anthropologists, graves registration personnel, and systems engineers) succeeded in identifying the remains of a...

Every technical system is subject to faults. In safety critical applications such as aircrafts or chemical factories, special measures need to be taken to address the possibility of faults. This is what fault tolerant control is about: analyse the effect of faults, and prevent them from causing trouble (see [1] for a more detailed overview). This project proposel a novel idea for fault tolerant...

We report on a calculation of the next-to-leading order QCD corrections to the partonic cross sections contributing to single-inclusive high-pT hadron production in collisions of transversely polarized hadrons. We give some predictions for the double spin asymmetry ATT for the proposed experiments at RHIC and at the GSI.

Capacity limitation of runway and taxiway in an airport is often the major limiting factor of air traffic operation. The congestions on the apron of an airport cause severe delay on aircraft schedule. This paper proposes an integrated algorithm to solve problems of runway scheduling and taxiway routing simultaneously for both departure and arrival aircrafts. A set partitioning model with side c...

A detailed approach has been developed for core aspects of the task of understanding a broad class of metaphorical utterances. The utterances in question are those that depend on known metaphorical mappings but that nevertheless contain elements not mapped by those mappings. A reasoning system has been implemented that partially instantiates the theoretical approach. The system, called ATT-Meta...

The human factors analysis and classification system (HFACS) is based upon Reason's organizational model of human error. HFACS was developed as an analytical framework for the investigation of the role of human error in aviation accidents, however, there is little empirical work formally describing the relationship between the components in the model. This research analyses 41 civil aviation ac...

There are many tools that carry cameras. Their working domain is usually surveillance, surface inspection, and broadcasting. Devices like rovers, gantries, and aircrafts often possess video cameras. The task is usually to maneuver the vehicle and position the camera to obtain the desired fields-of-view. A platform widely used in the broadcasting industry can be seen in Figure 1. The specific pa...

Flow corridor is a new class of trajectory-based airspace which derives from the Next Generation Air Transportation System Concept of Operations. Reducing the airspace complexity and increasing the capacity are the main purpose of the en-route corridor. This paper analyzes the collision risk-capacity tradeoff using combined discrete-continuous simulation method. A basic two-dimensional en-route...