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R&D (1,718 results)
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- Modeling of Internal Two-Phase Flow Field Inside a Turbojet Combustion Chamber. Application to In-Flight Relight
- The study presented in this paper is conducted in the frame of turbojets combustion chambers optimization by the increase of efficiency and the reduction of polluting emissions. The operating critical conditions at high altitude make it more difficult to control both the ignition and the re-light process after an accidental...
- White papers 2004-10-01
- Structural Loading of a Complete Aircraft Under Realistic Crash Conditions: Generation of a Load Database for Passenger Safety and Innovative Design
- The proposed paper presents hard landing simulations of large aeronautical structures using explicit F.E. codes, such as RADIOSS. The main technical difficulties arise from the dimensions and the complexity of the structures to model on the one hand, and from the complexity of the very local ruin phenomena on the...
- White papers 2004-10-01
- Modeling of the Ignition Inside a Turbojet Combustor: Application to In-Flight Relight
- In the paper, the numerical model is presented in detail, and some examples of its application to the experimental configuration are discussed. At high altitude, the operating critical conditions make the ignition and the relighting of jet engine combustors more difficult to control. The objective of ONERA is to develop...
- White papers 2004-10-04
- Evaluation of Finite Element Modeling Methodologies for the Design of Crashworthy Composite Commercial Aircraft Fuselage
- This paper aim at developing methodologies to design crashworthy composite commercial aircraft fuselages, a 2 frames section based on the A321 AIRBUS standard dimensions was manufactured by AIRBUS France, in order to be crash-tested at the Toulouse Aeronautical Test Centre. Though most p re-test numerical analyses confirmed this expected rupture...
- White papers 2004-09-30
- Modal Expansion Functions Combined With EFIE Applied to Air Intake / Engine RCS Computations
- This paper introduces a sub-domains technique for analyzing the EM scattering from 3D cavities. The Electric Field Integral Equation is used to compute the generalized Scattering matrices of the sub-domains. Wave-guided modes are used for modeling the field propagation from the cavity opening down to the engine face. RCS patterns...
- White papers 2004-05-25
- Distributed Simulation for Acquisition and Analysis of Future Airport Operational Concept
- In this paper, the French Aeronautics and Space Research Center ONERA are carrying out a federative R&D project to propose solutions which enhance traffic management of future airports while maintaining safety. One goal of this initiative is to provide an open and scalable modeling and simulation infrastructure to evaluate several...
- White papers 2004-03-22
- Assessment of Explicit F.E. Capabilities for Full Scale Coupled Fluid/Structure Aircraft Ditching Simulation
- The proposed paper presents hard landing simulations of large aeronautical structures using explicit F.E. codes, such as RADIOSS. The main technical difficulties arise from the dimensions and the complexity of the structures to model on the one hand, and from the complexity of the very local ruin phenomena on the...
- White papers 2002-12-04
Additional Resources
- Research and Markets: Government Policies and Initiatives in Nanotechnology Worldwide 2007
- DUBLIN, Ireland -- Research and Markets (http://www.researchandmarkets.com/reports/c69125) has announced the addition of Government Policies and Initiatives in Nanotechnology Worldwide 2007 to their offering. Governments worldwide are now strongly supporting R&D in nanotechnology, with over 30 countries implementing concerted national initiatives and programs. Government spending on...
- Articles 2007-09-21
- Storm warning: the Dassault Rafale is poised to become Europe's premier fighter-bomber.(Cover Story)
- France's Rafale is the most capable aircraft of the three new-generation fighters developed in Europe over the last two decades. Although the Dassault Rafale, Eurofighter Typhoon, and Saab Gripen are all currently being developed as multirole aircraft, only in the case of the...
- Articles 2005-06-01
- French UAV testbed.(BUSINESS BRIEFING)
- French aerospace research agency Onera and electronics specialist Sagem are teaming up to provide researchers and engineers with a dedicated airborne platform, "Le Busard" Harrier, to support the development of new-generation electronic systems for unmanned aerial vehicles UAV and special-mission aircraft. With...
- Articles 2005-03-22
- France pursues optical stealth program.(EUROPEAN REPORT)(Brief Article)
- On November 7, France's military-procurement agency awarded a $27-million contract to EADS for the design, production, and operation of the Moyen Aeroporte de Mesures Optroniques MAMO airborne test platform airborne optronic measurement facility. The main purpose of the program is to conduct exact...
- Articles 2004-01-01
- Search for synergies.
- Mar 03, 2003 (Aircraft and Aerospace - ABIX via COMTEX) Aerial warfare in a few years' time will be different from the 2003 variety. Future theatres of combat will be dominated by fighter-bombers operating in conjunction with unmanned air reconnaissance vehicles and unmanned...
- Articles 2003-03-04
- Mercury Computer Systems Receives Order from ONERA French Aeronautics and Space Research Agency; RACE++ Systems to Power Nostradamus Over-the-Horizon Radar
- Business/Technology Editors CHELMSFORD, Mass.--BUSINESS WIRE--Sept. 23, 2002 Mercury Computer Systems, Inc. (NASDAQ: MRCY), announced today that its French subsidiary, Mercury Computer Systems, S.A.R.L., has received an order for its RACE++R Series multicomputers from ONERA, the French Aeronautics and Space Research Agency, for a performance upgrade of...
- Articles 2002-09-23
- AWIATOR Technology Platform launch. (Business Briefing).(to reduce fuel burn and noise in future commercial airliners)(Brief Article)
- AWIATOR, a new EU Technology Platform project to reduce fuel burn and noise in future commercial airliners has been launched by the EU, Airbus and other partners, in an 80 Million [euro] project, 50 percent co-financed by the EU's research budget. AWIATOR will validate advanced technologies...
- Articles 2002-07-01
- Bigger, faster, more: demand for heavy duty computing power is perpetually increasing, but computer manufacturers disagree about the way the hunger will be satisfied in the future. (Computing).
- THE world's fastest supercomputer, capable of more than 12 trillion calculations per second (12 teraflops), is being installed by the US Energy Department to simulate the explosions of nuclear bombs. The nuclear test ban moratorium is forcing the pace in high performance...
- Articles 2000-09-01
- Ion microprobe enables identification of elements.(Brief Article)
- An ion microprobe has been developed that enables elemental and isotopic analysis of the elements in a material, according to French instrument maker Cameca. Designed in collaboration with the University of Paris and the Materials Division of Onera, the French National Office for Aerospace...
- Articles 2000-04-01
- NATO lectures showcase Russian expertise
- A group of eminent Russian scientists representing the major Russian centres for aerospace research in composites, including TSAGI and VIAMA, is to present a series of lectures on composites, organized by the Structures and Materials panel of NATO s Advisory Group for Aerospace Research and...
- Articles 1995-12-01
- NATO lectures showcase Russian expertise
- A group of eminent Russian scientists representing the major Russian centres for aerospace research in composites, including TSAGI and VIAMA, is to present a series of lectures on composites, organized by the Structures and Materials panel of NATO's Advisory Group for Aerospace Research and Development...
- Articles 1995-11-01
- Need For Better 'Black Boxes' Urgent Says Ntsb To Faa, Aviation Week Reports
- NEW YORK--BUSINESS WIRE--Feb, 24, 1995--Spurred to action by two unsolved crashes involving Boeing 737 transports, the National Transportation Safety Board is calling for sweeping changes that would greatly expand capacity of flight data recorders on most U.S. airline aircraft, reports Aviation Week & Space Technology in its February 27th...
- Articles 1995-02-24
- Compression data found to vary with test method
- Tests results giving the compression properties of composites can vary significantly with test method and specimen type. This was the finding of the Group of Responsables for Structures and Materials, part of the Group for Aeronautical Research and Technology in Europe GARTEUR, which recently completed...
- Articles 1993-10-01
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