Aircraft Fuselage
Mostrando 1-12 de 14 artigos, teses e dissertações.
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1. On the Global and Localised Corrosion Behaviour of the AA2524-T3 Aluminium Alloy Used as Aircraft Fuselage Skin
The aim of this work was to study the corrosion process of new aluminium alloy AA2524-T3 (Solution Heat Treated and Cold Worked), which is a promising substitute of the base line AA2024-T3 for aircrafts fabrication, by global and localised techniques in sodium chloride medium (0.05 mol L-1 NaCl). The open circuit potential results revealed a stochastic evolu
Mat. Res.. Publicado em: 14/01/2019
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2. Electromagnetic Characterization of Aircraft Composite Materials and its Effects on the Antenna Performance
Abstract This paper presents an electromagnetic characterization of aircraft composite materials, as well as numerical and experimental analyses of its effects on the antenna performance. Two uncalibrated S-parameters characterization methods have been applied for retrieving the complex electrical permittivity in the L- and C-band, namely: Air-region method
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2017-03
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3. Wind Tunnel Testing on a Generic Model of a Hybrid Lifting Hull
ABSTRACT In this research, an experimental investigation was carried out at the International Islamic University Malaysia - Low Speed Wind Tunnel facility on a generic model of a hybrid lifting hull. Based on the historical trends of non-rigid airships, the fineness ratio of the said hull has been selected equal to 4. Free stream velocity was kept at 20 m/s
J. Aerosp. Technol. Manag.. Publicado em: 2016-12
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4. Crashworthiness Analysis and Evaluation of Fuselage Section with Sub-floor Composite Sinusoidal Specimens
Abstract Crashworthiness is one of the main concerns in civil aviation safety particularly with regard to the increasing ratio of carbon fiber reinforced plastic (CFRP) in aircraft primary structures. In order to generate dates for model validations, the mechanical properties of T700/3234 were obtained by material performance tests, and energy-absorbing resu
Lat. Am. j. solids struct.. Publicado em: 2016-06
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5. Comparison of In-Flight Measured and Computed Aeroelastic Damping: Modal Identification Procedures and Modeling Approaches
ABSTRACT The Operational Modal Analysis technique is a methodology very often applied for the identification of dynamic systems when the input signal is unknown. The applied methodology is based on a technique to estimate the Frequency Response Functions and extract the modal parameters using only the structural dynamic response data, without assuming the kn
J. Aerosp. Technol. Manag.. Publicado em: 2016-06
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6. A new metamodel for reinforced panels under compressive loads and its application to the fuselage conception
This work presents a new metamodel for reinforced panels under compressive loads, typically used in light-weight aircraft structures. The metamodel represents a replicable cell structure of integrally machined panels. The presented formulation for conception is based on the synthesis of four stability criteria: section crippling, web buckling, flange bucklin
Lat. Am. j. solids struct.. Publicado em: 2014-03
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7. Crashworthiness study of a civil aircraft fuselage section
This paper studies the crashworthiness characteristics of a fuselage section and its improvement. A full-scale three-dimensional finite element model of the fuselage section is developed using a nonlinear finite element code, PAM-CRASH. The simulation is implemented to determine the structural deformation and impact response in terms of peak loads and accele
Lat. Am. j. solids struct.. Publicado em: 2014
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8. Estudo do comportamento mecânico da liga alumínio cobre 2024 solubilizada e envelhecida para aplicações aeronáuticas
Aluminum alloys present low specific density, good strength, and high corrosion resistance under common environments. Aluminum-Copper 2024 alloy is one of the most widely used alloy in aircraft fuselage structures due to its good mechanical properties. The microstructure of the alloy was observed by optical microscopy showing elongated grains caused from the
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 23/08/2011
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9. Structure-borne transmissibility evaluation through modeling and analysis of aircraft vibration dampers
Abstract In the aircraft industry a great practical relevance is given to the extensive use of vibration dampers between fuselage and interior panels. The proper representation of these isolators in computer models is of vital importance for the accurate evaluation of the vibration transmission paths for interior noise prediction. In general, simplified mode
J. Aerosp. Technol. Manag.. Publicado em: 2011-08
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10. Comparison between aluminum and all composite AL5 aircraft fuselage.
This work demonstrate the decision that lead the responsible team for the AL5 aircraft to recommend more dedicated study, on using composite materials on the constant section barrel of the fuselage, to the next design team. The recommendation where made after the mass comparison of a composite fuselage and an equivalent aluminum fuselage, both estimated thro
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 25/03/2008
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11. A novel antena for airborne radar : tridimensional Yagi / Um novo tipo de antena para radar aerotransportado : Yagi tridimensional
Embedded systems using Synthetic Aperture Radar (SAR), in orbital or airborne platforms, have often been used for remote sensing. When these systems are applied to vegetal cover and biomass studies, signals with frequency above 1 GHz do not properly penetrate in the vegetation. On the other hand, the use of signals with frequencies in P band (400 MHz) allows
Publicado em: 2008
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12. Tradeoff analysis between single and twin-aisle cross section for mid-size short-range aircraft.
The quest for comfort and mobility inside an aircraft is a daily concern. Today s designs are highly passenger-oriented, many times accepting performance losses as consequence of more spacious interiors. For wide-body twin-aisle aircraft there are a lot of solutions bringing an improved flying experience. On the other hand, the single-aisle paradigm for mid-
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 13/04/2007