Download or read book Gust Loads on Aircraft written by Frederic M. Hoblit and published by AIAA. This book was released on 1988 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Gust Loads on Aircraft written by Frederic M. Hoblit and published by AIAA Education. This book was released on 1988 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides an authoritative and practical presentation of the determination of gust loads on airplanes, especially continuous turbulence gust loads. The text emphasizes the basic concepts involved in gust load determination and enriches the material with discussion of important relationships, definitions of terminology and nomenclature, historical perspective, and explanations of relevant calculations. Coverage begins with discrete-gust idealization of the gust structure and moves to continuous-turbulence gust loads. Also considered are loads combination and design criteria, gust-response equations of motion, spanwise variation of vertical gust velocity, nonlinear systems, and analysis of gust-response flight-test data.
Download or read book Gust load and Airspeed Data from One Type of Four engine Airplane on Five Routes from 1947 to 1954 written by Walter G. Walker and published by . This book was released on 1955 with total page 642 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper presents the results of an analysis of approximately 100,000 hours of V-G data from one type of four-engine civil transport airplane to determine the magnitude and frequency of occurrence of the gust loads and gusts. The data were obtained during routine operations from 1947 to 1954 on five different routes. The normal accelerations for each of the five operations may be expected to exceed the value corresponding to the limit-gust-load-factor increment, on the average, twice (once positive and once negative) within the range of 5,000,000 to 22,300,000 flight miles. A derived gust velocity of 50 feet per second was exceeded twice within the range of 600,000 to 1,900,000 flight miles. The gust loads of the present operations were less than the loads experienced by other four-engine civil transports previously investigated, but the differences are not significant. The present data indicated only small differences due to seasonal effects and different operational utilization.
Download or read book Gust Alleviation Study written by Arthur L. Jones and published by . This book was released on 1958 with total page 378 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Flight Investigation of the Effects of Compressibility on Applied Gust Loads written by Earle T. Binckley and published by . This book was released on 1949 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two jet-propelled airplanes were flow at different speeds in rough air to investigate the effects of compressibility on applied gust loads at Mach numbers up to 0.68. The results indicated that no compressibility correction to the slope of the lift curve was necessary.
Download or read book An Approach to the Problem of Estimating Severe and Repeated Gust Loads for Missile Operations written by Harry Press and published by . This book was released on 1958 with total page 608 pages. Available in PDF, EPUB and Kindle. Book excerpt: An analysis of available airplane measurements of vertical gust velocity is presented in order to arrive at a simple description of the frequency and intensity of gust velocities experienced by airplanes in operations. For the purpose of application to missile operations; the results obtained are modified to eliminate the effects of storm-avoidance procedures normally followed in airplane operations. The frequency distributions of gust velocity are then converted to a form appropriate for use in power spectral response calculations. Methods of applying the results to the estimation of the large and the small repeated loads in missile operations are then developed. Simple methods of estimating the gust loadings that will be exceeded with a given probability are presented in terms of missile response parameters and turbulence parameters. The limitations of the present results are also discussed briefly.
Download or read book Introduction to Aircraft Aeroelasticity and Loads written by Jan Robert Wright and published by John Wiley & Sons. This book was released on 2008-02-28 with total page 559 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aeroelastic phenomena arising from the interaction of aerodynamic, elastic and inertia forces, and the loads resulting from flight / ground manoeuvres and gust / turbulence encounters, have a significant influence upon aircraft design. The prediction of aircraft aeroelastic stability, response and loads requires application of a range of interrelated engineering disciplines. This new textbook introduces the foundations of aeroelasticity and loads for the flexible aircraft, providing an understanding of the main concepts involved and relating them to aircraft behaviour and industrial practice. This book includes the use of simplified mathematical models to demonstrate key aeroelastic and loads phenomena including flutter, divergence, control effectiveness and the response and loads resulting from flight / ground manoeuvres and gust / turbulence encounters. It provides an introduction to some up-to-date methodologies for aeroelastics and loads modelling. It lays emphasis on the strong link between aeroelasticity and loads. It also includes provision of MATLAB and SIMULINK programs for the simplified analyses. It offers an overview of typical industrial practice in meeting certification requirements.
Download or read book DEVELOPMENT OF IMPROVED GUST LOAD CRITERIA FOR UNITED STATES AIR FORCE AIRCRAFT written by and published by . This book was released on 1967 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt: Gust loads criteria were developed which represent a considerable improvement over the current discrete gust criteria. These new criteria are based on the strength level of previously successful aircraft, and result from a probabilistic assessment of expected gust loads. To supplement the probabilistic criteria, an arbitrary criterion for limit design gust velocity is presented. The analyses to be used in conjunction with the new criteria are based on the continuous turbulence concept which allows the realistic determination of aircraft loads in atmospheric turbulence.
Download or read book The Application of the Statistical Theory of Extreme Values to Gust load Problems written by Harry Press and published by . This book was released on 1949 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper contains an analysis of the applicability of the statistical theory of extreme values to the problems of predicting the frequency of encountering the larger gust loads and velocities in flight through rough air. The results indicate that the distribution of maximum values of gust loads and velocities, under both test conditions and in normal commercial transport operations, may be represented by a simple analytic form. Methods of application and methods of measuring the reliability of the estimates are also given.
Download or read book Report written by United States. National Advisory Committee for Aeronautics and published by . This book was released on 1950 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Estimates of Probability Distribution of Root mean square Gust Velocity of Atmospheric Turbulence from Operational Gust load Data by Random process Theory written by Harry Press and published by . This book was released on 1955 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt: Airplanes.
Download or read book Time correlated Gust Loads Using Matched Filter Theory and Random Process Theory A New Way of Looking at Things written by Anthony S. Pototzky and published by . This book was released on 1989 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Loads Implications of Gust alleviation Systems written by William H. Phillips and published by . This book was released on 1957 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: A review is presented of the factors effecting gust loads and the methods or devices which reduce these loads. Aerodynamic devices which reduce the lift-curve slope include spoiler-deflector controls, for which some data are presented in the Mach number range from 0.4 to 1.1. Systems are also considered in which a sensing device is used to operate gust-alleviation controls. Two basically different types of sensing devices are possible, the load-sensing type and the angle-of-attack sensing type. These devices are compared and their limitations discussed. Some preliminary flight measurements of wing-root bending turbulence are presented for a gust-alleviation system installed in a small twin-engine transport airplane. This system increased the wing-root bending moments as compared with those of the basic airplane. This increase resulted from the fact that the system as tested was adjusted to reduce acceleration and, as a result, over-compensated for the wing-root bending moments due to gusts. Some flight measurements of the effects of a yaw damper on the tail loads of a bomber airplane are also presented.
Download or read book Further Studies Using Matched Filter Theory and Stochastic Simulation for Gust Loads Prediction written by Robert C. Scott and published by . This book was released on 1993 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Maximized Gust Loads for a Nonlinear Airplane Using Matched Filter Theory and Constrained Optimization written by and published by . This book was released on 1991 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Summary of Information Relating to Gust Loads on Airplanes written by Philip Donely and published by . This book was released on 1952 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dynamics of Ultralight Aircraft Motion in Vertical Gusts written by Robert T. Jones and published by . This book was released on 1977 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:
