Aviation's Global Promise
Total Page：16
File Type：pdf, Size：1020Kb
Load more
Recommended publications
-
Acoustic Simulation for Spacecraft Launch Modeling & Simulating Random Excitations
TM FFT: Solution Brief - Actran SOLUTION BRIEF Acoustic Simulation for Spacecraft Launch Modeling & Simulating Random Excitations Design Challenge Key Software Features At lift-off, payload components like satellites or antennas are exposed • Acoustic Finite Elements for cavity to intense acoustic excitations that can damage their structures. and exterior acoustics modeling • Acoustic Infinite Elements or Adaptive Excitations to the Model Perfectly Match Layers (APML) for modeling the far field anechoic condition Excitations to the model can include Diffuse Sound Field (DSF) • Structure elements library: solids, shells, or Turbulent Boundary Layer (TBL) directly on the structure, or composites, laminated structures, randomized plane waves applied to air around the spacecraft membranes, beams, springs, rigid or launch vehicle, which in turn applies the DSF to the structure. connec tions, etc. Internal air volumes and acoustic blankets can also be modeled for a • Poro-elastic element library based on the more accurate simulation. A hybrid frequency response solution is BIOT theory for modeling bulk reacting possible where modal frequency response will be solved on the structure materials and direct frequency response will be solved for the fluid and blanket, • Nastran to Actran translator (NAS2ACT) or anywhere that damping is frequency dependent. to convert Nastran structure models into Results can include acoustic quantities like Sound Power, Sound Actran models Pressure, or directivity, as well as quantities calculated on the • Import -
Actran VI Dedicated Pre & Post-Processor for the Actran CAE Software Family
Actran VI Dedicated pre & post-processor for the Actran CAE software family Key features • Support of all Actran features for the creation and editing of Actran analyses • Support of different mesh formats Product overview such as BDF (MSC Nastran), OP2 (MSC Nastran), UNV, RST (Ansys), Dedicated pre & post-processor for the Actran CAE software family CDB (Ansys), NFF & DAT (Actran) Actran VI is the graphical user interface (GUI) specifi cally designed for the pre- and and Patran Neutral Format post-processing of all the Actran vibro- and aero-acoustic analyses. Actran VI can import • Support of different results formats a large number of different mesh formats (Nastran BDF, ANSYS RST and CDB, Actran such as OP2, UNV, NFF, RST, HDF DAT and NFF, I-DEAS UNV, PATRAN Neutral Format) into its environment and features and Punch its own meshing tool specifi cally designed for generating, modifying and improving meshes for vibro- and aero-acoustic analyses. Its numerous meshing functionalities • Reading Nastran structure analysis, include surface and volume operations such as shrink-wrap and mesh-on-mesh surface translate and enrich into Actran generation or tetrahedral volume creations. It also features several editing tools allowing vibro-acoustic analysis fast and easy improvements of the acoustic mesh. Its various pre-processing functionalities ease the creation and editing of Actran models. • Visualization of Actran specific It is easy to visualize specifi c Actran model features, such as acoustic sources, duct features modes, beam’s shape, dynamic load, different boundary conditions, infi nite elements coordinate system, etc. ActranVI can also read Nastran structure analysis and translate • Visualization of the projection the Nastran properties into Actran properties. -
ACTRAN Acoustics the Most Efficient Solution for Predicting Acoustic Radiation
PRODUCTS ACTRAN Acoustics The most efficient solution for predicting acoustic radiation. KEY FEATURES > Standard and convected acous- tics > Extraction of acoustic modes > Handling of heterogeneities such as complex flows or temperature gradients Product overview > Account for dissipation me- chanisms such as viscothermal Rich and powerful acoustic features for your simu- losses, acoustic absorption... lation needs > Direct response and modal su- perposition approaches ACTRAN Acoustics is the foundation where it brings unprecedented module of the ACTRAN family and efficiency, speed and productivity > Unique library of stable infinite is both a standalone tool and a pre- to your analysis process. ACTRAN elements for modeling anechoic requisite for advanced modules like Acoustics features seamless boundary conditions ACTRAN VibroAcoustics, ACTRAN interfaces with most FEA structural AeroAcoustics or ACTRAN TM. analysis codes like NASTRAN, > Pressure, velocity and admit- ACTRAN Acoustics contains a wide ABAQUS™ or ANSYS™. tance boundary condition set of acoustic modeling features ACTRAN Acoustics also offers making it the CAE tool of choice powerful features for analyzing > Plane, spherical and cylindrical for the simulation of a large variety sound propagation in ducts and may wave sources and excitation of of problems, from the simplest be used for designing e.g. intake ducts by incident plane waves component to the most elaborate and exhaust lines or air distribution system. The ACTRAN Acoustics systems in buildings, aircrafts and > Vibration results recovery from product relies on Free Field cars. most FEA structural analysis solvers for radiation analysis Technologies’ exclusive powerful, Among the many advanced features robust, fast and reliable acoustic available in ACTRAN Acoustics are > Direct and iterative solvers for finite and infinite element library. -
ANSYS 18: Composite Cure Simulation Fans and Heat Exchanger Since 1909 48 FOUNDRY 4.0
Newsletter Simulation Based Engineering & Sciences Year 14 n°2 Summer 2017 Improving the development of farming equipment using CAE technologies Investigate different configurations Reliability-based RDO Visualization of Oil Lubrication and increase the overall Using Polynomial Chaos Expansion in the Transfer Case and switcher performances for Aeronautics Applications the Transmission Increase the efficiency of of fans Reliable hydraulic direct drives Optimum Design of Diesel and compressors at Boldrocchi for improved performance Ship Engine Silencer BOOST The 4th Industrial revolution is upon us, otherwise known as YOUR ANSYS Industry 4.0. From the mechanization of the 1st industrial revolution in the 18th century, we have experienced the benefits of mass production (2nd revolution) and computer PRODUCTIVITY! automation (3rd revolution). However, we are now moving LASH into the 4th, Cyber-Physical systems, where physical systems have a virtual copy and encompasses areas such as the F internet of things and cloud computing. Many companies have already taken the necessary steps to support their Industry 4.0 strategy by adopting advanced data management or innovative simulation software into their design process. The advantages of Industry 4.0 to transform the foundry process is evident on page 48. It reveals how a digital transformation can provide real time data to make adjustments, allowing for improvements in production efficiently. A complete adoption of an Industry 4.0 strategy could be a real game-changer, allowing costs to be minimized and reducing time-to-market to gain competitive advantage. Where oil plays an important role and conditions of its behaviour is often inspected on a physical product, significant changes to the product design at this stage is near impossible due to the costs involved. -
Implementation of a Random Forest Classifier to Examine Wildfire Predictive Modeling in Greece Using Diachronically Collected Fire Occurrence and Fire Mapping Data
Implementation of a Random Forest classifier to examine wildfire predictive modeling in Greece using diachronically collected fire occurrence and fire mapping data Authors: Alex Apostolakis, Stella Girtsou, Charalampos Kontoes, Ioannis Papoutsis, Michalis Tsoutsos e-mails: {alex.apostolakis, sgirtsou, kontoes, ipapoutsis, mtsoutsos}@noa.gr Beyond center of excelence, IAASARS, National Observatory of Athens, Greece Presenter: Alex Apostolakis Recent Forest fire disasters 2019 Bush fires in New South Wales of Australia burned about 1.65 million hectares 2019 Brazilian Space Agency has reported an 83% increase in fire occurrences compared to the same period of the previous year. 2018 Attica wildfires spread up to a speed of 124 km/h resulting to more than a hundred casualties. Climate change impact The problem of the wildfires becomes considerably important if we account for the climate change scenarios which suggest substantial warming and increase of heat waves, drought and dry spell events across the entire Mediterranean in the future years. Model categories for fire risk prediction Theoretical (or physics-based) : Theoretical models are entirely based on equations that describe the physics of the related to the fire ignition physical phenomena like fluid mechanics, combustion and heat transfer Data-driven models : Data-driven models (also known as empirical models before the data science developments) are purely based on the correlations between data extracted from historical fire records and their related parameters. Machine learning models belong to this category. Why Machine Learning models Machine Learning algorithms are designed to automatically formulate the complex mathematical relations between the input parameters. In Physical-based models the mathematics of those relations should be known in advance. -
Disaster Preparedness, Resilience, and Response Forum Report
Columbia World Projects: Disaster Preparedness, Resilience, and Response Forum Report August 15, 2019 Foreword Dear Reader, On behalf of Columbia World Projects (CWP), we are pleased to present the following report on our Forum on Disaster Preparedness, Resilience, and Response, one of an ongoing series of meetings dedicated to bringing together academia with partners from government, non- governmental and intergovernmental organizations, the media, and the private sector to identify projects designed to tackle fundamental challenges facing humanity. Natural disasters and public health emergencies impact tens of millions of people each year. At the individual level, the impact is often felt physically, mentally, and emotionally, and can destroy homes and businesses, wipe out financial resources, uproot families, and cause lasting injuries and even deaths. At the community and regional level, the impact can be equally devastating, inflicting enormous environmental and structural damage; stalling or even reversing a society’s economic growth and development; and producing and exacerbating poverty and instability. While natural disasters and public health emergencies have been a consistent feature of human existence, the frequency and intensity of such incidents have increased over the last few decades, in significant part as a result of climate change and growing mobility. All of this has made managing disasters more urgent, more expensive, and more complex. On June 10, 2019, CWP invited approximately 35 experts from a range of fields and disciplines to take part in a Forum with the aim not only of deepening our understanding of natural disasters and public health emergencies, but also of proposing concrete ways to improve the lives of people affected by these events. -
Transducer Models in the Ultrasound Simulation Program FIELD II and Their Accuracy
Downloaded from orbit.dtu.dk on: Oct 05, 2021 Transducer models in the ultrasound simulation program FIELD II and their accuracy Jensen, Jørgen Arendt; Bæk, David Published in: Acoustical Society of America. Journal Link to article, DOI: 10.1121/1.3384240 Publication date: 2010 Document Version Publisher's PDF, also known as Version of record Link back to DTU Orbit Citation (APA): Jensen, J. A., & Bæk, D. (2010). Transducer models in the ultrasound simulation program FIELD II and their accuracy. Acoustical Society of America. Journal, 127(3), 1828-1828. https://doi.org/10.1121/1.3384240 General rights Copyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights. Users may download and print one copy of any publication from the public portal for the purpose of private study or research. You may not further distribute the material or use it for any profit-making activity or commercial gain You may freely distribute the URL identifying the publication in the public portal If you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim. TUESDAY MORNING, 20 APRIL 2010 GRAND BALLROOM V, 9:15 A.M. TO 12:00 NOON Session 2aAO Acoustical Oceanography and Underwater Acoustics: Environmental Effects on Acoustic Propagation Roger M. Oba, Cochair Naval Research Lab., Code 7120, Washington, DC 20375 Ying-Tsong Lin, Cochair Woods Hole Oceanographic Inst., 210 Bigelow Bldg., Woods Hole, MA 02543 Contributed Papers 9:15 9:45 2aAO1. -
Wildfire Management in Europe Final Report and Recommendation Paper Cmine Task Group Wildfire
WILDFIRE MANAGEMENT IN EUROPE FINAL REPORT AND RECOMMENDATION PAPER CMINE TASK GROUP WILDFIRE The final output of the one-year mandate of the CMINE Wildfire Task Group work is a recommendation to align EU legislation and national, regional and local levels of governance regarding land management to facilitate the mitigation of the risks of wildfires.. Nina Dobrinkova, Bulgarian Academy of Sciences (IICT-BAS) February 2020 TABLE OF CONTENTS EXECUTIVE SUMMARY ................................................................................................................................. 3 ACKNOWLEDGEMENTS .............................................................................................................................. 4 INTRODUCTION ........................................................................................................................................... 7 CONTEXT OF THE TASK GROUP ........................................................................................................................... 7 GOAL OF THE TASK GROUP .................................................................................................................................. 7 EUROPEAN FIRES 'STATE OF THE ART' .............................................................................................................. 8 GENERAL INFORMATION ON WILDFIRES ........................................................................................................ 9 WILDFIRE CHARACTERISATION ........................................................................................................................ -
Aerodynamic Study of a Small Hypersonic Plane
Università degli Studi di Napoli “Federico II” Dottorato di Ricerca in Ingegneria Aerospaziale, Navale e della Qualità XXVII Ciclo Aerodynamic study of a small hypersonic plane Coordinatore: Ch.mo Prof. L. De Luca Candidata: Tutors: Ing. Vera D'Oriano Ch.mo Prof. R. Savino Ing. M. Visone (BLUE Engineering) Acknowledgements First I wish to thank my academic tutor Prof. Raffaele Savino, for offering me this precious opportunity and for his enthusiastic guidance. Next, I am immensely grateful to my company tutor, Michele Visone (Mike, for friends) for his technical support, despite his busy schedule, and for his constant encouragements. I also would like to thank the HyPlane team members: Rino Russo, Prof. Battipede and Prof. Gili, Francesco and Gennaro, for the fruitful collaborations. A special thank goes to all Blue Engineering guys (especially to Myriam) for making our site a pleasant and funny place to work. Many thanks to queen Giuly and Peppe "il pazzo", my adoptive family during my stay in Turin, and also to my real family, for the unconditional love and care. My greatest gratitude goes to my unique friends - my potatoes (Alle & Esa), my mentor Valerius and Franca - and to my soul mate Naso, to whom I dedicate this work. Abstract Access to Space is still in its early stages of commercialization. Most of the attention is currently focused on sub-orbital flights, which allow Space tourists to experiment microgravity conditions for a few minutes and to see a large area of the Earth, along with its curvature, from the stratosphere. Secondary markets directly linked to the commercial sub-orbital flights may include microgravity research, remote sensing, high altitude Aerospace technological testing and astronauts training, while a longer term perspective can also foresee point-to-point hypersonic transportation. -
Design & Engineering Simulation Solutions
Brochure Design & engineering simulation solutions Smarter CAE, virtual manufacturing & costing About MSC Software Accelerate smart change with CAE simulation MSC Software develops predictive simulation software technology that enables engineers to validate and optimize their manufactured product or process designs using virtual prototypes. Customers in almost every part of manufacturing use our software to complement, and in some cases even replace the physical prototype “build and test” process that has traditionally been used in product design. We partner with our customers to help improve quality, save time and reduce costs associated with design and test of manufactured products. Our products accurately and reliably predict how products will behave in the real world to help engineers design more innovative products - quickly, cost effectively and right-first-time. MSC Software’s technology is used by leading manufacturers for linear and nonlinear finite element analysis (FEA), acoustics, fluid-structure interaction (FSI), multi-physics, optimization, fatigue and durability, multi-body dynamics, electro-mechanical drivelines, and control systems simulation. MSC pioneered many of the technologies that are now relied upon by industry to analyze and predict stress and strain, vibration & dynamics, acoustics, and thermal analysis in our flagship product, MSC Nastran. The McNeal Schwendler Corporation (MSC) was formed in 1963 and was awarded the original contract from NASA to commercialize the finite element analysis (FEA) software known as NASTRAN (NASA Structural Analysis). MSC pioneered many of the technologies that are now relied upon by industry to analyze and predict stress and strain, vibration & dynamics, acoustics, and thermal analysis in our flagship product, MSC Nastran. Over our rich history, MSC has developed or acquired many other well-known CAE applications including Patran, Adams, Marc, Dytran, CAEfatigue, SimManager, Easy5, Sinda, Actran, Digimat, Cradle CFD, VTD, FormingSuite, MSC Apex, Romax, and Simufact. -
Job Description
JOB DESCRIPTION Technical Manager / JOB TITLE Job ID 217SA0001 Acoustic Simulation Manager LOCATION Troy, MI Organization Sales PURPOSE This person has the responsibility for managing a group of Acoustic Simulation Application Engineers to handle all of the acoustic technical activities in the Americas across a wide variety of industries including automotive, aircraft, space, industrial, and consumer products. He or she will work with other FFT/MSC technical resources in acoustics and other disciplines, with engineers at our customers and prospects, and with sales and management personal at FFT and MSC Software. They will fill the role of technical specialist in acoustics to our prospects and customers, and will coordinate the tasks, priorities and on--‐going training of our technical team in the areas listed below. EDUCATION Master’s Degree or PhD in mechanical or electrical engineering or physics with an emphasis in acoustics WORK EXPERIENCE We will consider candidates with no experience or with significant experience. Experience with one or more acoustic simulation software following: Actran, Abaqus, Sysnoise, Virtual Lab Acoustics, Comsol Acoustics, or VAone. CFD, structural FEA Acoustic measurement KNOWLEDGE, SKILLS AND ABILITIES Deep knowledge of engineering acoustics Excellent interpersonal skills, including excellent written and oral communication in English Strong desire to learn and to help people solve their problems Knowledge of Ansa, Patran, Hypermesh, Nastran, Python, Matlab, StarCCM+, Fluent or other FEA or CFD tools is preferred DUTIES/RESPONSIBILITIES 1. Managing the delivery of acoustic technical solutions to Americas prospects and customers. 2. Pre--sales Support – Listening to prospects to understand their needs, their current acoustic analysis and testing processes, and then explaining how Actran software and / or our consulting services could help them. -
POLITECNICO DI TORINO Repository ISTITUZIONALE
POLITECNICO DI TORINO Repository ISTITUZIONALE Innovative Model Based Systems Engineering approach for the design of hypersonic transportation systems Original Innovative Model Based Systems Engineering approach for the design of hypersonic transportation systems / Ferretto, Davide. - (2020 Mar 06), pp. 1-466. Availability: This version is available at: 11583/2839867 since: 2020-07-14T10:42:55Z Publisher: Politecnico di Torino Published DOI: Terms of use: Altro tipo di accesso This article is made available under terms and conditions as specified in the corresponding bibliographic description in the repository Publisher copyright (Article begins on next page) 04 August 2020 Doctoral Dissertation Doctoral Program in Aerospace Engineering (32nd Cycle) Innovative Model Based Systems Engineering approach for the design of hypersonic transportation systems By Davide Ferretto Supervisor(s): Prof. Nicole Viola, PhD, Supervisor Prof. Eugenio Brusa, PhD, Co-Supervisor Doctoral Examination Board: Dr. Guillermo Ortega, PhD, Referee, European Space Agency Dr. Marco Marini, PhD, Referee, Centro Italiano Ricerche Aerospaziali Dr. Bayindir Saracoglu, PhD, Board Member, Von Karman Institute for Fluid Dynamics Dr. Victor Fernandez Villace, PhD, Board Member, European Space Agency Prof. Paolo Maggiore, PhD, Board Member, Politecnico di Torino Politecnico di Torino 2020 Declaration I hereby declare that, the contents and organization of this Dissertation* constitute my own original work and do not compromise in any way the rights of third parties, including those relating to the security of personal data. Davide Ferretto 2020 * This Dissertation is presented in partial fulfilment of the requirements for Ph.D. degree in the Doctoral School of Politecnico di Torino (ScuDo). This Dissertation has been carried out in the framework of the Stratospheric Flying Opportunities for High-Speed Propulsion Concepts (STRATOFLY) Project, funded by the European Union’s Horizon 2020 research and innovation programme under grant agreement No 769246.