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This paper aims to review the critical technology development of avian radar system at airports.

After the origin of avian radar technology is discussed, the target characteristics of flying birds are analyzed, including the target echo amplitude, flight speed, flight height, trajectory and micro-Doppler. Four typical airport avian radar systems of Merlin, Accipiter, Robin and CAST are introduced. The performance of different modules such as antenna, target detection and tracking, target recognition and classification, analysis of bird information together determines the detection ability of avian radar. The performances and key technologies of the ubiquitous avian radar are summarized and compared with other systems, and their applications, deployment modes, as well as their advantages and disadvantages are introduced and analyzed.

The ubiquitous avian radar achieves the long-time integration of target echoes, which greatly improves detection and classification ability of the targets of birds or drones, even under strong background clutter at airport. In addition, based on the big data of bird situation accumulated by avian radar, the rules of bird activity around the airport can be mined to guide the bird avoidance work.

This paper presented a novel avian radar system based on ubiquitous digital radar technology. The authors’ experience has confirmed that this system can be effective for airport bird strike prevention and management. In the future, the avian radar system will see continued improvement in both software and hardware, as the system is designed to be easily extensible.

The purpose of this paper is to use numerical methods early in the airframe design process and access the structural performance of wing leading edge devices made of different materials and design details, under bird strike events.

Explicit finite element analysis was used to numerically model bird strike events.

Structural performance charts related to materials and general design details were drawn to explore the design space dictated by the current applicable airworthiness requirements.

This paper makes use of the current capability in the numerical tools available for structural simulations and exposes the existing limitations in the terms of material modelling, material properties and fracture simulation using continuum damage mechanics. Such results will always be in the need of fine-tuning with experimental testing, yet the tools can shed some light very early in the design process in a relative inexpensive manner, especially for design details down selection like materials to use, structural thicknesses and even design arrangements.

Bird strike simulations have been successfully used on aircraft design, mainly at the manufactured articles design validation, testing and certification. This paper presents a hypothetical early design case study of leading edge devices for appropriate material and skin thickness down selection.

This paper aims to analyze the contradictions between telecommunications regulation and environmental law in America, via coverage of the problem of large numbers of birds being killed at communications towers.

Via statutory, legal, and qualitative analysis, this article provides an analysis of Federal Communications Commission (FCC) compliance with environmental statutes and the conflicts that arise between the agency's mandate to maintain a robust telecommunications network and its statutory responsibilities for environmental protection.

Every year, millions of birds are killed at communications towers. In 1999, the US Fish and Wildlife Service issued guidelines urging the FCC to take action on this problem, as required by various environmental statutes. The FCC ignored the guidelines for several years and defeated the American Bird Conservancy in court when that group sued for observance of the guidelines, but this ruling was later overturned on appeal. The FCC has exhibited a pattern of responding to these developments years after the fact while obfuscating its previous history of non‐compliance and non‐cooperation. As of early 2012 no viable solution to the avian mortality problem has been proposed.

The FCC is required to comply with federal environmental statutes and regulations. However, citizens wishing to dispute FCC environmental compliance will face challenges arising from conflicting statutes and inconsistencies in federal agency behavior.

There has been very little research on the intersection of environmental law and telecommunications regulation, and the particular matter of avian mortality at communications towers has only been analyzed by ornithologists and environmental scientists.

The aim of this study is to assess and describe possible consequences of a bird strike on a Polish-designed PZL-106 Kruk agricultural aircraft. Due to its susceptibility to such events, a wing slat has been chosen for analysis.

Smooth particle hydrodynamics (SPH) formulation has been used for generation of the bird finite element model. The simulations were performed by the LS-Dyna explicit finite element analysis software. Several test cases have been analysed with differing parameters such as impact velocity, initial velocity vector direction, place of impact and bird mass.

Results of this study reveal that the structure remains safe after an impact at the velocity of 25 m/s. The influence of bird mass on slat damage is clearly observable when the impact velocity rises to 60 m/s. Another important finding was that in each case where the part did not withstand the applied load, it was the lug where first failure occurred. Some of the analysed cases indicated the possibility a consequent wing box damage.

This finding provides the manufacturer an important insight into the behaviour of the slat and suggests that more detailed analysis of the current lug design might improve the safety of the structure.

Even though similar analyses have been performed, they tended to focus on large transport aircraft components. This investigation will enhance our understanding of structural response of small, low-speed aircraft to a bird impact, which is a realistic scenario for the chosen case of an agricultural plane.

An optimization method has been presented to simultaneously identify the bird’s constitutive model and its parameters automatically in the bird strike problems. The full contact‐impact coupling algorithm of finite element method (FEM) has been applied and the optimization objective is to minimize the square sum of percentage errors between testing results and FEM results. As an example, two bird’s material constitutive models, Plastic Kinematics model and hyper elastic Mooney‐Rivlin Rubber material model, have been used to testify the feasibility and reliability of the optimization method. The results show that the method presented in this paper can be used to study the bird strike problems.

Epidemiologists are concerned the next deadly global cognition will be a new kind of deadly flu which humans have no resistance. Since the 1960s, their alarm has been focused on a bird (avian) virus (H5N1). This virus is generally harmless in its host species, but it is extremely deadly when contracted by humans. H5N1 mutates quickly and tends to pick up genes from flu viruses that affect other species. The flu is far more contagious and harder to contain than the SARS (severe acute respiratory syndrome) virus. It is projected that 30‐40 per cent of the population would be infected in a H5N1 flu pandemic, and as many as one‐third would die. The 1918 Spanish flu caused 20 to 50 million deaths world wide. One scientist observed that the 1918 Spanish flu pandemic could have caused civilisation to disappear within a few weeks. Currently, more than 50 million chickens have been slaughtered in eight Asian countries in efforts to curb the spread of avian influenza. This article examines the roots and dangers of the potential avian influenza pandemic, examining the business and social ramifications that could ensue if the worst case scenario occurs.

There is much anecdotal evidence that birds and their droppings are a major problem for the heritage profession. The purpose of this paper is to examine how serious heritage practitioners consider the bird impact to be.

An online survey was conducted of 59 Australian heritage professionals of between one and >20 year’s experience in the field.

Bird impacts were not considered of major concern to buildings. The longer experience a practitioner had, the less likely the impacts were considered an issue. Feral pigeons were deemed the most problematic, followed by cockatoos, starlings, swallows, seagulls, mynas, sparrows, cormorants, ibis, ducks and birds of prey. The professionals ranked common deterrent methods. The highest-ranking deterrents were bird netting and bird spikes, but they were only considered moderately effective. The costs of installation and maintenance, as well the ease of installation, were all deemed significantly less important than the physical impact, the aesthetic sympathy and the effectiveness of a deterrent method.

This study indicates that the impact of birds on buildings in Australia may be of less concern than previously thought, and may be driven by other factors (i.e. aesthetics, commercial companies) rather than actual effects.

This is first study of its kind that surveyed the experiences of a wide range of heritage practitioners.

THE probability of the loss of one transport aircraft fitted with the new generation of turbofan engines every five years due to bird ingestion causing multiple engine shutdown was the conclusion drawn by Dr Glen W. Schaefer in a recent specialist lecture given to the Royal Aeronautical Society. Dr Schaefer is a Professorial Research Fellow and Director of the Biophysics Research Unit of the University of Technology at Leicester who, after extensive experience in the fields of atomic reactor physics, aerodynamics of gas turbines and axial compressor vibrations, has for the past four years carried out research into the causes of bird hazards to aircraft as well as developing radar techniques for the study of bird and insect migration and bird detection on airfield runways.

Birding, the active seeking out and identification of birds, is a wide‐spread and fast growing avocation on this continent, and indeed throughout the world. Jon Rickert's A Guide to North American Bird Clubs lists 17 national/continental organizations for both professional ornithologists and amateur birders and 844 state, provincial, and local associations. In addition, there are those legions of “unorganized” bird watchers and occasional, inquisitive discoverers of backyard birds. Members of this diverse congregation of birders have at least one thing in common — the need for a reliable identification tool enabling them to correctly label the just‐seen, unfamiliar bird. A field guide is just such a tool.

Bird strike and hail impact resistances are considered in relation to the fulfilment of airworthiness/crashworthiness regulations as specified by appropriate aviation authorities. Before aircraft are allowed to go into service, these regulations must be fulfilled. This includes the adaption of the wing leading edge (LE) structure to smart diagnostics and an easy repair. This paper aims to focus on the wing LE, although all forward-facing aircraft components are exposed to the impact of foreign object during the flight. The best practices based on credible simulations which may be appropriate means of establishing compliance with European Aviation safety Agency and Federal Aviation Administration regulations regarding bird strikes, together with the problem of collisions with hailstones, are overviewed in aspect of accuracy and computing cost.

The best means of evaluating worldwide certification standards so as to be more efficient for all stakeholders by reducing risk and costs (time and money consuming) of certification process are recommended. The very expensive physical tests may be replaced by adequate and credible computer simulations. The adequate credible simulation must be verified and validated. The statistical approaches for modelling the uncertainty are presented in aspect of computing cost.

The simulation models have simplifications and assumptions that generate an uncertainty. The uncertainty must be identified in benchmarking tests. Instead of using “in house” physical tests, there are scientific papers available in open literature thanks to the new trend in worldwide publication of the research results. These large databases can be efficiently transform into useful benchmark thanks to data mining and knowledge discovery methods and big data analyses. The physical test data are obtained from tests on the ground-based demonstrator by using high-speed cameras and a structural health monitoring system, and therefore, they should be applied at an early stage of the design process.

The sources of uncertainty in simulation models are expressed, and the way to their assessment is presented based on statistical approaches. A brief review of the current research shows that it widely uses efficient numerical analysis and computer simulations and is based on finite element methods, mesh structure as well as mesh free particle models. These methods and models are useful to analyse airworthiness requirements for damage tolerance regarding bird-strike and hail impact and haves been subjected to critical review in this paper. Many original papers were considered in this analysis, and some of them have been critically reviewed and commented upon.