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Computational Flight Testing
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Book Synopsis Computational Flight Testing by : Norbert Kroll
Download or read book Computational Flight Testing written by Norbert Kroll and published by Springer Science & Business Media. This book was released on 2013-06-18 with total page 287 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reports on the German research initiative ComFliTe (Computational Flight Testing), the main goal of which was to enhance the capabilities of and tools for numerical simulation in flight physics to support future aircraft design and development. The initiative was coordinated by the German Aerospace Center (DLR) and promoted collaboration between the aircraft industry and academia. Activities focused on improving physical modeling for separated flows, developing advanced numerical algorithms for series computations and sensitivity predictions, as well as surrogate and reduced order modeling for aero data production and developing robust fluid-, structure- and flight mechanics coupling procedures. Further topics included more efficient handling of aircraft control surfaces and improving simulation methods for maneuvers, such as gust encounter. The important results of this three-year initiative were presented during the ComFliTe closing symposium, which took place at the DLR in Braunschweig, Germany, on 11-12 June 2012. Computational Flight Testing addresses both students and researchers in the areas of mathematics, numerical simulation and optimization methods, as well as professionals in aircraft design working at the forefront of their field.
Book Synopsis National Remote Computational Flight Research Facility by :
Download or read book National Remote Computational Flight Research Facility written by and published by . This book was released on 1989 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Experience in the Use of Computational Aerodynamics to Predict Store Release Characteristics by :
Download or read book Experience in the Use of Computational Aerodynamics to Predict Store Release Characteristics written by and published by . This book was released on 2000 with total page 45 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the early days, store separation tests were conducted in a hit or miss fashion - the stores would he dropped from the aircraft at gradually increasing speeds until the store came close to or sometimes actually hit the aircraft. In some cases, this led to loss of the aircraft, and made some test pilots reluctant to participate in store separation flight test programs. During the 1960's, the Captive Trajectory System (CTS) method for store separation wind tunnel testing was developed. The CTS provided a considerable improvement over the hit or miss method, and became widely used in aircraft/store integration programs prior to flight-testing. However, since fairly small-scale models had to be used in the wind tunnel tests, in many cases, the wind tunnel predictions did not match the flight test results. No mechanism was then in place to resolve the wind tunnel/flight test discrepancies. During this same timeframe, Computational Fluid Dynamics (CFD) had finally matured to the point of providing a trajectory solution for a store in an aircraft flowfield. However, Since the computational tools were necessarily (due to computer resource limitations) limited to linear techniques, and since most store separation problems occur at transonic speeds, these tools had limited application. Recent advances in computer resources have greatly improved the capability of CFD to predict store release characteristics. Instead of using linear or approximate schemes, time dependent Euler and Navier Stokes trajectories could he computed in a reasonable timeframe. Three international CFD challenges, held during the last decade of the 20th century, have shown that CFD cannot only match wind tunnel test data, but also predict flight test trajectories for complex stores at transonic speeds. It appears that CFD has matured to the point that it can be usefully integrated into aircraft/store compatibility programs.
Book Synopsis Applied Computational Aerodynamics by : Russell M. Cummings
Download or read book Applied Computational Aerodynamics written by Russell M. Cummings and published by Cambridge University Press. This book was released on 2015-04-27 with total page 893 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers the application of computational fluid dynamics from low-speed to high-speed flows, especially for use in aerospace applications.
Book Synopsis On Subscale Flight Testing by : Alejandro Sobron
Download or read book On Subscale Flight Testing written by Alejandro Sobron and published by Linköping University Electronic Press. This book was released on 2018-11-05 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt: Downscaled physical models, also referred to as subscale models, have played an essential role in the investigation of the complex physics of flight until the recent disruption of numerical simulation. Despite the fact that improvements in computational methods are slowly pushing experimental techniques towards a secondary role as verification or calibration tools, real-world testing of physical prototypes still provides an unmatched confidence. Physical models are very effective at revealing issues that are sometimes not correctly identified in the virtual domain, and hence can be a valuable complement to other design tools. But traditional wind-tunnel testing cannot always meet all of the requirements of modern aeronautical research and development. It is nowadays too expensive to use these scarce facilities to explore different design iterations during the initial stages of aircraft development, or to experiment with new and immature technologies. Testing of free-flight subscale models, referred to as Subscale Flight Testing (SFT), could offer an affordable and low-risk alternative for complementing conventional techniques with both qualitative and quantitative information. The miniaturisation of mechatronic systems, the advances in rapid-prototyping techniques and power storage, as well as new manufacturing methods, currently enable the development of sophisticated test objects at scales that were impractical some decades ago. Moreover, the recent boom in the commercial drone industry has driven a quick development of specialised electronics and sensors, which offer nowadays surprising capabilities at competitive prices. These recent technological disruptions have significantly altered the cost-benefit function of SFT and it is necessary to re-evaluate its potential in the contemporary aircraft development context. This thesis aims to increase the comprehension and knowledge of the SFT method in order to define a practical framework for its use in aircraft design; focusing on low-cost, short-time solutions that don’t require more than a small organization and few resources. This objective is approached from a theoretical point of view by means of an analysis of the physical and practical limitations of the scaling laws; and from an empirical point of view by means of field experiments aimed at identifying practical needs for equipment, methods, and tools. A low-cost data acquisition system is developed and tested; a novel method for semi-automated flight testing in small airspaces is proposed; a set of tools for analysis and visualisation of flight data is presented; and it is also demonstrated that it is possible to explore and demonstrate new technology using SFT with a very limited amount of economic and human resources. All these, together with a theoretical review and contextualisation, contribute to increasing the comprehension and knowledge of the SFT method in general, and its potential applications in aircraft conceptual design in particular.
Author :National Aeronautics and Space Administration (NASA) Publisher :Createspace Independent Publishing Platform ISBN 13 :9781722667894 Total Pages :90 pages Book Rating :4.6/5 (678 download)
Book Synopsis National Remote Computational Flight Research Facility by : National Aeronautics and Space Administration (NASA)
Download or read book National Remote Computational Flight Research Facility written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-10 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt: The extension of the NASA Ames-Dryden remotely augmented vehicle (RAV) facility to accommodate flight testing of a hypersonic aircraft utilizing the continental United States as a test range is investigated. The development and demonstration of an automated flight test management system (ATMS) that uses expert system technology for flight test planning, scheduling, and execution is documented. Rediess, Herman A. Unspecified Center...
Author :National Aeronautics and Space Adm Nasa Publisher :Independently Published ISBN 13 :9781794260931 Total Pages :36 pages Book Rating :4.2/5 (69 download)
Book Synopsis Computational Fluid Dynamics Analysis Success Stories of X-Plane Design to Flight Test by : National Aeronautics and Space Adm Nasa
Download or read book Computational Fluid Dynamics Analysis Success Stories of X-Plane Design to Flight Test written by National Aeronautics and Space Adm Nasa and published by Independently Published. This book was released on 2019-01-18 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: Examples of the design and flight test of three true X-planes are described, particularly X-plane design techniques that relied heavily on computational fluid dynamics(CFD) analysis. Three examples are presented: the X-36 Tailless Fighter Agility Research Aircraft, the X-45A Unmanned Combat Air Vehicle, and the X-48B Blended Wing Body Demonstrator Aircraft. An overview is presented of the uses of CFD analysis, comparison and contrast with wind tunnel testing, and information derived from CFD analysis that directly related to successful flight test. Lessons learned on the proper and improper application of CFD analysis are presented. Highlights of the flight-test results of the three example X-planes are presented. This report discusses developing an aircraft shape from early concept and three-dimensional modeling through CFD analysis, wind tunnel testing, further refined CFD analysis, and, finally, flight. An overview of the areas in which CFD analysis does and does not perform well during this process is presented. How wind tunnel testing complements, calibrates, and verifies CFD analysis is discussed. Lessons learned revealing circumstances under which CFD analysis results can be misleading are given. Strengths and weaknesses of the various flow solvers, including panel methods, Euler, and Navier-Stokes techniques, are discussed. Cosentino, Gary B. Armstrong Flight Research Center NASA/TM-2008-214636, H-2838
Book Synopsis Understanding Performance Flight Testing: Kitplanes and Production Aircraft by : Hubert C. Smith
Download or read book Understanding Performance Flight Testing: Kitplanes and Production Aircraft written by Hubert C. Smith and published by McGraw Hill Professional. This book was released on 2001-09-18 with total page 241 pages. Available in PDF, EPUB and Kindle. Book excerpt: *Covers lightplane performance flight testing methods, measures, and computer applications *Includes CD-ROM with sample spreadsheets containing equations to help readers perform their own flight tests *Describes GPS (Global Positioning System) test method for airspeed calibration and rapid-wind camera method for takeoff performance
Book Synopsis Introduction to Flight Testing by : James W. Gregory
Download or read book Introduction to Flight Testing written by James W. Gregory and published by John Wiley & Sons. This book was released on 2021-05-17 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introduction to Flight Testing Introduction to Flight Testing Provides an introduction to the basic flight testing methods employed on general aviation aircraft and unmanned aerial vehicles Introduction to Flight Testing provides a concise introduction to the basic flight testing methods employed on general aviation aircraft and unmanned aerial vehicles for courses in aeronautical engineering. There is particular emphasis on the use of modern on-board instruments and inexpensive, off-the-shelf portable devices that make flight testing accessible to nearly any student. This text presents a clear articulation of standard methods for measuring aircraft performance characteristics. Topics covered include aircraft and instruments, digital data acquisition techniques, flight test planning, the standard atmosphere, uncertainty analysis, level flight performance, airspeed calibration, stall, climb and glide, take-off and landing, level turn, static and dynamic longitudinal stability, lateral-directional stability, and flight testing of unmanned aircraft systems. Unique to this book is a detailed discussion of digital data acquisition (DAQ) techniques, which are an integral part of modern flight test programs. This treatment includes discussion of the analog-to-digital conversion, sample rate, aliasing, and filtering. These critical details provide the flight test engineer with the insight needed to understand the capabilities and limitations of digital DAQ. Key features: Provides an introduction to the basic flight testing methods and instrumentation employed on general aviation aircraft and unmanned aerial vehicles. Includes examples of flight testing on general aviation aircraft such as Cirrus, Diamond, and Cessna aircraft, along with unmanned aircraft vehicles. Suitable for courses on Aircraft Flight Test Engineering. Introduction to Flight Testing provides resources and guidance for practitioners in the rapidly-developing field of drone performance flight test and the general aviation flight test community.
Book Synopsis Flight Test Incident Via Computational Aerodynamics and Store Separation Analysis by : Seth Moyer
Download or read book Flight Test Incident Via Computational Aerodynamics and Store Separation Analysis written by Seth Moyer and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Advanced UAV Aerodynamics, Flight Stability and Control by : Pascual Marqués
Download or read book Advanced UAV Aerodynamics, Flight Stability and Control written by Pascual Marqués and published by John Wiley & Sons. This book was released on 2017-07-11 with total page 799 pages. Available in PDF, EPUB and Kindle. Book excerpt: Comprehensively covers emerging aerospace technologies Advanced UAV aerodynamics, flight stability and control: Novel concepts, theory and applications presents emerging aerospace technologies in the rapidly growing field of unmanned aircraft engineering. Leading scientists, researchers and inventors describe the findings and innovations accomplished in current research programs and industry applications throughout the world. Topics included cover a wide range of new aerodynamics concepts and their applications for real world fixed-wing (airplanes), rotary wing (helicopter) and quad-rotor aircraft. The book begins with two introductory chapters that address fundamental principles of aerodynamics and flight stability and form a knowledge base for the student of Aerospace Engineering. The book then covers aerodynamics of fixed wing, rotary wing and hybrid unmanned aircraft, before introducing aspects of aircraft flight stability and control. Key features: Sound technical level and inclusion of high-quality experimental and numerical data. Direct application of the aerodynamic technologies and flight stability and control principles described in the book in the development of real-world novel unmanned aircraft concepts. Written by world-class academics, engineers, researchers and inventors from prestigious institutions and industry. The book provides up-to-date information in the field of Aerospace Engineering for university students and lecturers, aerodynamics researchers, aerospace engineers, aircraft designers and manufacturers.
Book Synopsis Aircraft Aerodynamic Design with Computational Software by : Arthur Rizzi
Download or read book Aircraft Aerodynamic Design with Computational Software written by Arthur Rizzi and published by Cambridge University Press. This book was released on 2021-05-20 with total page 467 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aerodynamic design of aircraft presented with realistic applications, using CFD software. Tutorials, exercises, and mini-projects provided involve design of real aircraft. Using online resources and supplements, this text prepares last-year undergraduates and first-year graduate students for industrial aerospace design and analysis tasks.
Book Synopsis Applied Computational Aerodynamics by : P. A. Henne
Download or read book Applied Computational Aerodynamics written by P. A. Henne and published by AIAA. This book was released on 1990 with total page 970 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Computational Flight Dynamics by : Malcolm J. Abzug
Download or read book Computational Flight Dynamics written by Malcolm J. Abzug and published by AIAA. This book was released on 1998 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Flight Test: the Discipline by : Peter Tyson
Download or read book Flight Test: the Discipline written by Peter Tyson and published by AuthorHouse. This book was released on 2020-03-26 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt: Why Flight Test? Since the Wright Brothers first flew at Kitty Hawk, aerodynamicists, engineers, and mathematicians have conquered the equations of flight. So, we should be able to know everything from wind tunnels, simulation, and computation, right? No. The dynamics of flight require in air test. It is impossible to replicate all the flight conditions on the ground. Or there may be specific flight conditions on the ground. Or there may be specific flight regimes that are poorly defined or too complex to model, such as the flow field around an aircraft carrier. But if we must test in flight, how can we do that safely, efficiently, and effectively? This book describes the basic principles and concepts of flight test. Beginning with the questions and goals of flight test, and showing the parallel between flight test engineering and the Scientific Method, FLIGHT TEST: THE DISCIPLINE covers all the steps of test planning, execution, and reporting. Whether you are a professional flight test engineer or a novice, an aviation buff, or aircrew, you will enjoy the discussion in this book and understand how flight test is a crucial part of man's development of flight. The authors of this book represent vast experience within US Naval Aviation flight test. They bring their array of knowledge and skill to any test team, showing the fundamentals of flight test and most importantly, the "Why?" of what we do in flight test. This book was written to complement the FLIGHT TEST: THE DISCIPLINE training course presented by AVIAN at www.avian.com and Peter Tyson at www.phtyson.com
Book Synopsis Computational Modelling and Simulation of Aircraft and the Environment: Platform kinematics and synthetic environment by : Dominic J. Diston
Download or read book Computational Modelling and Simulation of Aircraft and the Environment: Platform kinematics and synthetic environment written by Dominic J. Diston and published by AIAA Education. This book was released on 2009 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a comprehensive guide to the derivation of computational models for aerospace operations from basic physical and mathematical principles. Highly relevant to practioners, it takes into account the multidisciplinary nature of the aerospace environment and the integrated nature of the models needed to represent it.
Download or read book Hypersonic Flight Testing written by and published by . This book was released on 1994 with total page 37 pages. Available in PDF, EPUB and Kindle. Book excerpt: The challenges of hypersonic system development require a combination of integrated ground testing, flight testing, and computational/simulation approaches. This report addresses the role of flight testing in the triad of development approach and is sub-divided into three parts: Propulsion, Aerothermal and Extrapolation of ground test data to flight. The reasons for propulsion flight test are illustrated by specific mini-case studies. The second part reviews some of the fundamental issues of flight testing and provides an overview of the aerothermal techniques. Specific examples include heat-transfer gage measurements and some of the common problems that have been encountered. The third part of this report discusses the initial flights of the Space Shuttle which uncovered a number of differences between preflight aerodynamic predictions and actual flight data. Most notable among these discrepancies was for longitudinal trim during high-speed re-entry. To investigate these differences, several computer codes were applied to a modified Space Shuttle Orbiter to determine aerodynamic parameters over a wide range of conditions. Computations were carried out for wind tunnel conditions and flight conditions to assess Mach number, real gas, and viscous effects on the reentry aerodynamics of the orbiter. flight-testing, Aerothermal techniques, Hypersonic vehicles, Computational Fluid Dynamics (CFD) simulations, High-speed re-entry.
