Construction of Nominal Ionospheric Gradient Using Satellite Pair Method Based on GNSS CORS Observation in Indonesia

Ground-Based Augmentation System (GBAS) is a GNSS augmentation system that meets International Civil Aviation Organization (ICAO) requirements to support precision approach and landing. GBAS is based on the local differential GNSS technique with reference stations located around the airport to provide necessary integrity and accuracy. The performance of the GBAS system can be affected by the gradient in the ionospheric delay between the aircraft and the reference stations. A nominal ionospheric gradient, which is bounded by a conservative error bound, is represented by a parameter σvig. σvig was commonly determined using station pair to GNSS Continuous Operating Reference Station (CORS) data. The station pair method is susceptible to doubling of receiver bias error and is not suitable with the CORS conditions in Indonesia. We propose a satellite pair method that is found to be more suitable for the CORS network over Indonesia which is centered in Java and Sumatra islands. The value of σvig (4.48 mm/km) is obtained using this method along with the preliminary results of a comparison of σvig from Java and Sumatra islands.

Collocations and aviation terms

Collocations have a great potencial to the understanding of meanings, senses and concepts of words or terms they compound. In this article, we studied the collocations of the terms “segurança” in Portuguese, and “safety” and “security” in English, in aviation language. Our aims were to search for a better understanding of the studied conceptual units, and to offer a discussion about the role of collocations in Terminology. We built two comparable corpora, one with Portuguese texts from the Brazilian National Civil Aviation Agency and the Brazilian Air Force, and another one with English texts from the International Civil Aviation Organization. We focused on the main collocations of the three terms in Portuguese and in English. The theoretical frame we adopted was the Communicative Theory of Terminology (CABRÉ, 1999) and we used the techniques of Corpus Linguistics (TAGNIN, 2010, 2013; BERBER SARDINHA, 2000) to design our methodology, assisted by the software WordSmith Tools, version 6.0. (SCOTT, 2012). We found noun and adjective collocations. The study is addressed to professionals, teachers and tranlators who make use of aviation language. KEY-WORDS: Terms of Aviation; Terminology; Corpus Linguistics; Collocations.

TECHNICAL ENGLISH IN AEROSPACE

Since 2004, the International Civil Aviation Organization has imposed pilots and air traffic controllers elsewhere in the world to comply with the established language proficiency standards as a safety measure against language and communication problems during flights. Currently, one of the problems that aviation English practitioners face is the lack of training materials on aviation specifications to learn various language aspects. This article discusses peculiarities of technical English used in aerospace. Thus, technical English not only facilitates communication between native and non-native English speakers but reduces the risk of errors and overall risks as well. In this regard, appropriate teaching approaches should be chosen, various tools and forms of teaching English aviation language should be used to form the language competence of future specialists.

SUSTENTABILIDADE E INFRAESTRUTURA AEROPORTUÁRIA BRASILEIRA: A QUALIFICAÇÃO GREEN AIRPORT

Podemos entender sustentabilidade como uma forma de cumprir com as necessidades do presente sem comprometer o futuro, sendo esse conceito sustentado por três pilares: econômico, ambiental e social. A implantação, a operação e a manutenção da infraestrutura aeroportuária geram inúmeros impactos, buscando dar uma resposta às pressões impostas por organizações ambientais, a indústria aeroportuária tem caminhado em direção à sustentabilidade, tornando os aeroportos verdes. Diante disso, a Airports Council International (ACI) juntamente com a International Civil Aviation Organization (ICAO) vem trabalhando no Green Airport, focando no planejamento sustentável dos aeroportos. Isto posto, o presente artigo procura analisar as práticas sustentáveis praticadas por aeroportos brasileiros certificados como Green Airport , identificando os critérios de certificação e as entidades certificadoras. A mencionada certificação é um importante passo na busca por uma infraestrutura aeroportuária ambientalmente sustentável, embora no Brasil alguns aeroportos empreendam esforços nesta direção ainda estamos longe de se alcançar os seis níveis propostos pela ACI.,

Least Risk Bomb Location Explosives Identification, Detection and Mitigation

This paper investigates the still evolving strategic trajectories and the context adopted for the procedures for inducting a Least Risk Bomb Location (LRBL) that began with discretionary participation by various aircraft manufacturers approximately in the year 1972, where the use of a specific procedure has been designed to decrease the effects of an explosion significantly in the aircraft’s passenger cabins of large commercial airplanes. Additionally, the International Civil Aviation Organization (ICAO) has provided the information on the location of the LRBL and guidance to various operators (National/International)on the procedures to use when a suspected threat item is found on-board an airplane. The designation of LRBL for aero planes is intended to be used solely for the transport of cargo, where an aero plane must include a designated location where a bomb or other explosive device could be designated to protect integrity of the structure and flight-critical systems from damage in the case of detonation occurs.

Carbon emissions of Provincial Administrative Regions from the airlines in China

This paper seeks to calculate the overall emissions of China’s 413 main domestic routes in 2018, containing the Landing and Take-Off (LTO) emissions and Climb/Cruise/Descent (CCD) emissions. First, the standard calculation method of LTO emissions proposed by the International Civil Aviation Organization (ICAO) is applied to calculate the LTO emissions of 413 routes and 40 airlines. Next, the modified Fuel Percentage Method (MFPM) is used to calculate the CCD emissions of main aircraft types at various distances. Then the overall emissions are split into the Provincial Administrative Regions (PARs) on the routes to discuss the probable carbon compensations, which is the core to build an aviation carbon trading mechanism. China Southern Airlines, China Eastern Airlines, and Air China are the top three airlines in emissions. Guangdong has the most carbon emissions from airlines, but it may get the third most carbon compensation from the airlines.

Space Weather Services for Civil Aviation—Challenges and Solutions

This paper presents a review on the PECASUS service, which provides advisories on enhanced space weather activity for civil aviation. The advisories are tailored according to the Standards and Recommended Practices of the International Civil Aviation Organization (ICAO). Advisories are disseminated in three impact areas: radiation levels at flight altitudes, GNSS-based navigation and positioning, and HF communication. The review, which is based on the experiences of the authors from two years of running pilot ICAO services, describes empirical models behind PECASUS products and lists ground- and space-based sensors, providing inputs for the models and 24/7 manual monitoring activities. As a concrete example of PECASUS performance, its products for a post-storm ionospheric F2-layer depression event are analyzed in more detail. As PECASUS models are particularly tailored to describe F2-layer thinning, they reproduce observations more accurately than the International Reference Ionosphere model (IRI(STORM)), but, on the other hand, it is recognized that the service performance is much affected by the coverage of its input data. Therefore, more efforts will be directed toward systematic measuring of the availability, timeliness and quality of the data provision in the next steps of the service development.

Unlawful Acts in Maritime Transport & Civil Aviation

Maritime and civil aviation security is a global problem posed by terrorism and illegal acts and therefore requires global attention and solutions that can only be provided by relevant international organizations (International Maritime Organization and International Civil Aviation Organization). Nineteen years have passed since the attacks of 11 September 2001 on the World Trade Center, but the threat of another terrorist attack is still just as possible and unacceptable. The series of attacks in the USA have started a new period of history. This period can be characterised as unsteady, unpredictable, and transforming of complex systems, including new types of dangers. The paper provides a comprehensive analysis and comparison of the most serious types of unlawful acts (terrorism and piracy) regarding legislation and jurisdiction. For the sake of comparability of legal phenomena, special attention is paid to illegal acts at sea and in the airspace above the sea.