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Viewing 1 to 30 of 145
2015-06-15
Technical Paper
2015-01-2123
Eric Defer, Jean-Louis Brenguier, Jos De Laat, Julien Delanoe, Fabien Dezitter, Michael Faivre, Amanda Gounou, Alice Grandin, Anthony Guignard, Jan-Fokke Meirink, Jean-Marc Moisselin, Frederic Parol, Claudine Vanbauce
J.-L. Brenguier (1), J. De Laat (2), P. De Valk (2), E. Defer (3), J. Delanoë (3), F. Dezitter (4), M. Faivre (3), A. Gounou (1), A. Grandin (4), A. Guignard (3), J. F. Meirink (2), J.-M. Moisselin (1), F. Parol (3), C. Vanbauce (3) 1 - Météo-France 2 - KNMI 3 - CNRS 4 - AIRBUS The European FP7 High Altitude Ice Crystals (HAIC) project aims at characterizing specific environmental conditions in the vicinity of convective clouds that can lead to in-service events [1]. Academics and aeronautic industries are collaborating within 6 main research activities that include dedicated field campaigns, development of new in situ probes, space-based detection and monitoring, upgrade of on-board weather radars, improvement of ground test facilities, and modeling of melting and impingement processes. All activities are designed to enhance aircraft safety when flying in mixed phase and glaciated icing conditions.
2015-06-15
Technical Paper
2015-01-2111
Marie-Laure Toulouse
The intent of this paper is to provide a general overview of the main engineering and test activities conducted in order to support A350XWB Ice and Rain Protection Systems certification. Several means of compliance have been used to demonstrate compliance with applicable Certification Basis (CS 25 at Amendment 8 + CS 25.795 at Amendment 9, FAR 25 up to Amendment 129) and Environmental protection requirements. The EASA Type Certificate for the A350XWB was received the 30th September 2014 after 7 years of development and verification that the design performs as required, with five A350 XWB test aircraft accumulating more than 2600 flight test hours and over 600 flights. The flight tests have been carried out in dry air and measured natural icing conditions to demonstrate the performance of all ice and rain protection systems and to support the compliance demonstration with CS25.1419.
2015-06-15
Technical Paper
2015-01-2136
Francisco José Redondo
Due to weight constraints, the engine air intake for the Airbus A400M Transport Airplane will be all made in aluminum, and by specification, the intake is protected against ice accretion by a hot air system. In order to assure a fatigue life of the element for the life of the airplane, the temperature of the air supplied must be controlled to a maximum value consistent with aluminum characteristics. A system has been designed wherein hot air is bled and cooled by coolant air from inside the nacelle with a jet pump.While maximum temperature was a constraint for the design of the system, several other constraints appeared during the detailed design of the system; - the tight space allocation inside the nacelle limited the length of the jet pump, - the low temperature provided by the engine bleed in flight idle limited the secondary flow used to cool the engine bleed, and - the complex air distribution needed to supply air to the intake areas. Two variants of the system were developed.
2015-06-15
Technical Paper
2015-01-2108
Julien Cliquet, Christian Bartels, Carlos Bautista
SAE Aircraft , Engines, Structures Icing Conference, 22-25 June 2015, Prague A combined post-processing method for SLD modeling J. Cliquet, C. Bartels, C. Bautista-Infante, Airbus Operations Abstract Supercooled Large Droplets (SLD) have taken an increasingly important place in the airframe icing over the past 15 years. Awareness of the aircraft SLD icing hazard has focused particular attention following several aircraft accidents, especially that of the ATR-72 on 31 October 1994 (Ref. [1]). The actual certification envelope defined by 14 CFR Part 25 Appendix C: Atmospheric Icing Conditions for Aircraft Certification, accounts for an icing envelope characterized by water droplet diameters up to 50 μm. International airworthiness authorities have jointly developed an extension of Appendix "C", named "Appendix O", to account for SLD conditions in the aircraft certification process.
2015-06-15
Technical Paper
2015-01-2103
Christian Bartels, Julien Cliquet, Carlos Bautista
Icing is a phenomenon observed on aircraft airframes while flying through clouds of supercooled droplets. The phenomenon only occurs for ambient air temperatures below the freezing point. The droplets impinge on the aircraft surfaces and freeze, leading to ice accretion. The resulting change in aircraft geometry and surface roughness can modify the aircraft’s aerodynamic characteristics (lift loss, drag increase), it may affect air data probe measurements, and can even damage the engines by ice ingestion. In order to comply with certification regulations, airframers have to demonstrate safe operation of their aircraft in icing conditions. However, due to associated cost and time, it is prohibitive to cover the whole icing envelope by flight-testing or icing-tunnel testing. Therefore, aircraft manufacturers have developed, with support from research institutes, numerical prediction methods and tools to cover their prediction needs.
2015-06-15
Technical Paper
2015-01-2124
Amanda Gounou, Jean-Marc Moisselin, Frédéric Autones, Jean-Louis Brenguier, Dominique Levaillant, Eric Défer, Michael Faivre, Sandra Turner, Fabien Dezitter, Alice Grandin
Icing conditions are often encountered in the vicinity of deep convective clouds. Nowcasting of these conditions would be of a great help for flight safety and air traffic management but still remains challenging. In the framework of the HAIC (High Altitude Ice Crystals) project [1], the nowcasting of icing conditions due to ice particles is investigated. A major field campaign has been carried out in Darwin, Australia, from 16th January to 7th March 2014, during the rainy season to sample meteorological conditions potentially leading to icing [2]. There were 23 research flights with on-board in-situ and remote sensing instruments measuring or estimating ice water content within oceanic mature thunderstorms which offered a great opportunity to implement, test and cross-validate nowcasting tools to detect and track cloud regions of high ice water content.
2015-06-15
Technical Paper
2015-01-2147
Sandra Turner, Jean-Marc Gaubert, Remy Gallois, Thibault Dacla, Ingrid Mullie, Aurelien Bourdon, Fabien Dezitter, Alice Grandin, Alain Protat, Rodney Potts, Alfons Schwarzenboeck, J. Walter Strapp
The PLANET (PLAne-NETwork) System was used for real-time satellite data transmission during the HAIC/HIWC Darwin field Campaign (January to March 2014). The basic system was initially providing aircraft tracking, chat and weather text messages (METAR, TAF, NOTAM, etc.) in a standalone application. In the frame of the HAIC (High Altitude Ice Crystals) project, many improvements were made in order to fulfill requirements of the on-board and ground science teams. The aim of this paper is to present the main improvements of the PLANET System that were implemented for the Darwin field campaign. The goal of the flight tests for high IWC characterization were to collect cloud data in deep convective clouds, provide 99th percentile total water content statistics and other relevant parameters of such clouds as a function of distance scale to industry and regulators.
2015-06-15
Technical Paper
2015-01-2087
Delphine Leroy, Emmanuel Fontaine, Alfons Schwarzenboeck, J. Walter Strapp, Lyle Lilie, Julien Delanoe, Alain Protat, Fabien Dezitter, Alice Grandin
Title: HAIC/HIWC field campaign - specific findings on PSD microphysics in high IWC regions from in situ measurements: crystal size distribution characteristics, ice density, and median mass diameters Authors: Delphine Leroy (CNRS-LaMP), Emmanuel Fontaine (CNRS-LaMP), Alfons Schwarzenboeck (CNRS-LaMP), J.
2015-01-29
Article
The A321neo 97t will have, with 4000 nmi, the longest range of any single aisle airliner “available today and tomorrow,” claims Airbus, making it suited to transatlantic routes.
2015-01-08
Article
VISTARA, a new carrier based in New Delhi, has signed long-term Flight Hour Services Tailored Support Package (FHS-TSP) contracts with Airbus with the entry into service of its 20 A320 leased fleet. The FHS-TSP contract provides an integrated and guaranteed service ranging from components supply and repair to full airframe maintenance and engineering service.
2014-10-02
Article
With its European base and global presence, it would only make sense that Airbus would take a leading role in the EU’s CleanSky 2, a joint technology initiative that is the follow-up to the CleanSky aerospace research program.
2014-08-05
Article
Airbus, British Airways (BA), Heathrow Airport (LHR), and NATS (the main air navigation service provider in the U.K.) have established a partnership to study and develop operational procedures to reduce the number of people affected by noise around London’s Heathrow.
2014-06-19
Article
Airbus Group and Safran are further strengthening their relationship to propose a new family of competitive, versatile, and efficient space launchers, to serve both commercial and institutional needs.
2014-05-08
Article
The first ever Airbus A350 XWB to visit the U.S., MSN2, arrived the second week in May at McKinley Climatic Lab at Eglin Air Force base in Florida. Over several weeks the aircraft and its various systems and cabin installations will be subjected to the extreme hot and cold temperatures that the facility can sustain in a testing environment.
2014-03-10
Article
Greater fuel efficiency and low emission requirements have grown into such an urgent imperative in aircraft design that it often overshadows an equally significant factor in air travel—noise. Airbus shows that it’s possible to infuse acoustic simulation into design processes from beginning to end, giving engineers the acoustic simulation intelligence they need to create quieter aircraft, according to Free Field Technologies.
2014-02-24
Article
Airbus and Commercial Aircraft Corporation of China (COMAC) signed a memorandum of understanding to develop a mutual understanding on new air traffic management concepts and operations as defined in the ICAO Global Air Navigation Plan.
2014-01-02
Article
Airbus signed a memorandum of understanding with EGTS International, a joint-venture company between Safran and Honeywell Aerospace, to further develop and evaluate an autonomous electric pushback and taxiing solution for the A320 Family.
2013-10-04
Article
Assembly of large and complex carbon-fiber-reinforced plastic (CFRP) components requires the use of liquid resin-based materials for applications such as shimming and aerodynamic sealing. These materials generally require curing times up to 12 h; heated air technology can reduce that time to 2 h.
2013-09-18
Article
Rising system complexity and shortened development cycles have led to the need for an extension of the existing, classical test methods. The Airbus High Lift Test Department is pursuing virtual testing as an additional, equivalent test means besides existing, established physical means of compliance.
2013-09-17
Technical Paper
2013-01-2124
Valérie Berger
Airbus business and Extended Enterprise require more and more involvement of design and built suppliers, tier 1 but also across the complete supply chain i.e. tier 2-n. These suppliers are not working only for Aerospace industry and may have different cultures. The pressure on cost and overall efficiency is high and everybody has to cope with obsolescence and new regulation (e.g. REACH (Registration, Evaluation and Authorization and Restriction of Chemicals)). So it became very important for Airbus to clarify the criteria under which a change can be done without Airbus review, and criteria under which a change can be done without Airworthiness authority review.
2013-04-19
Article
Airbus has begun construction of the company’s A320 Family Assembly Line in Mobile, AL. The new assembly line, which is the company’s first U.S.-based production facility, will be located at the Mobile Brookley Aeroplex and will facilitate assembly of A319, A320, and A321 aircraft.
2012-07-06
Article
Airbus has announced plans to establish a manufacturing facility in the United States to assemble and deliver the family of A319, A320, and A321 aircraft. Located at the Brookley Aeroplex in Mobile, AL, it will be the company's first U.S.
2012-05-31
Article
Researchers from Brötje-Automation and Airbus come up with a “versatile” solution.
2012-03-23
Video
In Aeronautic industry, when we launch a new industrialization for an aircraft sub assembly we always have the same questions in mind for drilling operations, especially when focusing on lean manufacturing. How can we avoid dismantling and deburring parts after drilling operation? Can a drilling centre perform all the tasks needed to deliver a hole ready to install final fastener? How can we decrease down-time of the drilling centre? Can a drilling centre be integrated in a pulse assembly line? How can we improve environmental efficiency of a drilling centre? It is based on these main drivers that AIRBUS has developed, with SPIE and SOS, a new generation of drilling centre dedicated for hard materials such as titanium, and high thicknesses. The first application was for the assembly of the primary structure of A350 engine pylons. The main solution that was implemented meeting several objectives was the development of orbital drilling technology in hard metal stacks.
2011-11-03
Article
In the automotive industry, the industrial robot is a common solution to achieve high-speed, repeatable processes. But due to its lack of accuracy and its compliant nature, use of robots has not been as successful in aircraft manufacturing. The use of force control with robots could change that.
2011-10-20
Article
Due to the conflicting trends of increasing complexity of systems and drastically reduced development times, virtual testing has become one of the solutions to achieve aircraft system certification.
2011-10-18
Journal Article
2011-01-2803
Ali Zolghadri, Anca Gheorghe, Jérôme Cieslak, David Henry, Philippe Goupil, Rémy Dayre, Hervé Le Berre
This paper discusses the design of a model-based fault detection scheme for robust and early detection of runaways in aircraft control surfaces servo-loop. The proposed scheme can be embedded within the structure of in-service monitoring systems as a part of the Flight Control Computer (FCC) software. The final goal is to contribute to improve the performance detection of unanticipated runaway faulty profiles having very different dynamic behaviors, while retaining a perfect robustness. The paper discusses also the tradeoffs between adequacy of the technique and its implementation level, industrial validation process with Engineering support tools, as well as the tuning aspects. The proposed methodology is based on a combined data-driven and system-based approach using a dedicated Kalman filtering. The technique provides an effective method ensuring robustness and good performance (well-defined real-time characteristics and well-defined error rates).
2011-10-18
Technical Paper
2011-01-2804
Philippe Goupil, Andres Marcos
The state-of-practice for aircraft manufacturers to diagnose guidance & control faults and obtain full flight envelope protection at all times is to provide high levels of dissimilar hardware redundancy. This ensures sufficient available control action and allows performing coherency tests, cross and consistency checks, voting mechanisms and built-in test techniques of varying sophistication. This hardware-redundancy based fault detection and diagnosis (FDD) approach is nowadays the standard industrial practice and fits also into current aircraft certification processes while ensuring the highest level of safety standards. In the context of future “sustainable” aircraft (More Affordable, Smarter, Cleaner and Quieter), the Electrical Flight Control System (EFCS) design objectives, originating from structural loads design constraints, are becoming more and more stringent.
2011-10-18
Technical Paper
2011-01-2805
Maxime Lastera, Eric Alata, Jean Arlat, Yves Deswarte, David Powell, Bertrand Leconte, Cristina Simache
Traditionally, software in avionics has been totally separated from open-world software, in order to avoid any interaction that could corrupt critical on-board systems. However, new aircraft generations need more interaction with off-board systems to offer extended services, which makes these information flows potentially dangerous. In a previous work, we have proposed the use of virtualization to ensure dependability of critical applications despite bidirectional communication between critical on-board systems and untrusted off-board systems. We have developed a test bed to assess the performance impact induced by the use of virtualization. In this work, various configurations have been experimented that range from a basic machine without an OS up to the complete architecture featuring a hypervisor and an OS running in a virtual machine. Several tests (computation, memory, network) are carried out, and timing measures are collected on different hypervisors.
2011-10-18
Journal Article
2011-01-2793
Oleg Merkulov, Vladimir Zherebtsov, Marina Peganova, Eduard Kitanin, Joseph Kah-Wah Lam, Andrey Sartori
Fuel on-board dehydration during flight technologies has been modeled and experimentally studied on a laboratory testing setup in normal specific gas flow rates range of 0.0002-0.0010 sec-₁. Natural air evolution, ullage blowing and fuel sparging with dry inert gas have been studied. It has been shown that natural air evolution during aircraft climb provides a significant, substantial, but insufficient dehydration of fuel up to 20% relative. Ullage blowing during cruise leads to a constant, but a slow dehydration of fuel with sufficient column height concentration gradient. Dry inert gas sparging held after the end of the natural air evolution or simultaneously with natural air evolution provides rapid fuel dehydration to the maximum possible values. It potentially may eliminate water release and deposition in fuel to -50°C. It has been found that for proper dehydration, necessary and sufficient volume of dry inert gas to volume of fuel ratio is about 1.
Viewing 1 to 30 of 145

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