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Estimation Of Longitudinal Stability And Control Derivatives For An Icing Research Aircraft From Flight Data
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Author :National Aeronautics and Space Administration (NASA) Publisher :Createspace Independent Publishing Platform ISBN 13 :9781722208462 Total Pages :24 pages Book Rating :4.2/5 (84 download)
Book Synopsis Estimation of Longitudinal Stability and Control Derivatives for an Icing Research Aircraft from Flight Data by : National Aeronautics and Space Administration (NASA)
Download or read book Estimation of Longitudinal Stability and Control Derivatives for an Icing Research Aircraft from Flight Data written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-02 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: The results of applying a modified stepwise regression algorithm and a maximum likelihood algorithm to flight data from a twin-engine commuter-class icing research aircraft are presented. The results are in the form of body-axis stability and control derivatives related to the short-period, longitudinal motion of the aircraft. Data were analyzed for the baseline (uniced) and for the airplane with an artificial glaze ice shape attached to the leading edge of the horizontal tail. The results are discussed as to the accuracy of the derivative estimates and the difference between the derivative values found for the baseline and the iced airplane. Additional comparisons were made between the maximum likelihood results and the modified stepwise regression results with causes for any discrepancies postulated. Batterson, James G. and Omara, Thomas M. Langley Research Center RTOP 505-66-01-02...
Book Synopsis Estimation of Longitudinal Stability and Control Derivatives for an Icing Research Aircraft from Flight Data by : James G. Batterson
Download or read book Estimation of Longitudinal Stability and Control Derivatives for an Icing Research Aircraft from Flight Data written by James G. Batterson and published by . This book was released on 1989 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Longitudinal Stability and Control Derivatives of a Jet Fighter Airplane Extracted from Flight Test Data by Utilizing Maximum Likelihood Estimation by : George G. Steinmetz
Download or read book Longitudinal Stability and Control Derivatives of a Jet Fighter Airplane Extracted from Flight Test Data by Utilizing Maximum Likelihood Estimation written by George G. Steinmetz and published by . This book was released on 1971 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: "A method of parameter extraction for stability and control derivatives of aircraft from flight test data, implementing maximum likelihood estimation, has been developed and successfully applied to actual longitudinal flight test data from a modern sophisticated jet fighter. The results of this application establish the merits of the estimation technique and its computer implementation (allowing full analyst interaction with the program) as well as provide data for the validation of a portion of the Langley differential maneuvering simulator (DMS). The results are presented for all flight test runs in tabular form and as time history comparisons between the estimated states and the actual flight test data."--Page i
Book Synopsis Determination of Longitudinal Aerodynamic Derivatives Using Flight Data from an Icing Research Aircraft by : R.J. Rainaudo
Download or read book Determination of Longitudinal Aerodynamic Derivatives Using Flight Data from an Icing Research Aircraft written by R.J. Rainaudo and published by . This book was released on 1989 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Estimation of Longitudinal Stability and Control Derivatives Using Steady-state Flight Test Data by : Jerry Wayne Joyner
Download or read book Estimation of Longitudinal Stability and Control Derivatives Using Steady-state Flight Test Data written by Jerry Wayne Joyner and published by . This book was released on 1978 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Estimation of Airplane Stability and Control Derivatives from Large Amplitude Longitudinal Maneuvers by : James G. Batterson
Download or read book Estimation of Airplane Stability and Control Derivatives from Large Amplitude Longitudinal Maneuvers written by James G. Batterson and published by . This book was released on 1981 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NASA Technical Memorandum written by and published by . This book was released on 1989 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Application of Parameter Estimation to Aircraft Stability and Control by : Richard E. Maine
Download or read book Application of Parameter Estimation to Aircraft Stability and Control written by Richard E. Maine and published by . This book was released on 1986 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Longitudinal Stability and Control Derivatives Obtained from Flight Data of a PA-30 Aircraft by : Dale R. Turley
Download or read book Longitudinal Stability and Control Derivatives Obtained from Flight Data of a PA-30 Aircraft written by Dale R. Turley and published by . This book was released on 1981 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Determination of Stability and Control Parameters of a General Aviation Airplane from Flight Data by : Imran Abbasy
Download or read book Determination of Stability and Control Parameters of a General Aviation Airplane from Flight Data written by Imran Abbasy and published by . This book was released on 1983 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Flight-determined stability and control derivatives for the F-111 TACT research aircraft by : Alex G. Sim
Download or read book Flight-determined stability and control derivatives for the F-111 TACT research aircraft written by Alex G. Sim and published by . This book was released on 1978 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 702 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Matrix Method of Determining the Longitudinal-stability Coefficients and Frequency Response of an Aircraft from Transient Flight Data by : James J. Donegan
Download or read book Matrix Method of Determining the Longitudinal-stability Coefficients and Frequency Response of an Aircraft from Transient Flight Data written by James J. Donegan and published by . This book was released on 1951 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: A method is presented for obtaining the over-all longitudinal-stability coefficients and frequency response of an aircraft from an analysis of arbitrary maneuvers in which simple instrumentation is used. Although the method presented deals entirely with the aircraft, it is equally applicable to other problems which can be expressed by second-order differential equations.
Book Synopsis Comparison of Several Methods for Estimating Low-speed Stability Derivatives for Two Airplane Configurations by : Herman S. Fletcher
Download or read book Comparison of Several Methods for Estimating Low-speed Stability Derivatives for Two Airplane Configurations written by Herman S. Fletcher and published by . This book was released on 1971 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: Methods presented in five different publications have been used to estimate the low-speed stability derivatives of two unpowered airplane configurations. One configuration had unswept lifting surfaces, the other configuration was the D-558-II swept-wing research airplane. The results of the computations were compared with each other, with existing wind-tunnel data, and with flight-test data for the D-558-II configuration to assess the relative merits of the methods for estimating derivatives. The results of the study indicated that, in general, for low subsonic speeds, no one text appeared consistently better for estimating all derivatives.
Book Synopsis Determination of the Stability and Control Derivatives for the Variable-Response Research Aircraft Using a Modified Maximum Likelihood Estimator by : Jean Michel Fernand
Download or read book Determination of the Stability and Control Derivatives for the Variable-Response Research Aircraft Using a Modified Maximum Likelihood Estimator written by Jean Michel Fernand and published by . This book was released on 1978 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: A maximum likelihood estimation program was applied to flight data for Princeton's Variable-Response Research Aircraft to determine its primary stability and control derivatives. The control derivatives for the side-force surfaces and the rudder were of special interest. The effects of measurement noise and process noise on parameter identification also were studied. This investigation showed that the maximum likelihood estimation program used identifies derivatives which produce close fits of the measured time histories. Standard deviations of the derivations computed from several time histories indicate the quality of the estimates. The reduction in standard deviations when estimates were separated by type and direction of control input time history used indicates that derivative estimates are affected by the assumptions inherent in the analytical model and the signal-to-noise ratios of the data. The method used for identifying highly correlated derivatives also affected the estimates obtained. The final set of derivatives determined in this research produced a good fit of the measured data and several of the derivatives agreed well with analog matching derivative estimates. (Author).
Book Synopsis An Investigation of a Method for Unique Determination of Aircraft Longitudinal Stability Derivatives From Transient Flight Test Data by : R R Eckhart F F Cornwell
Download or read book An Investigation of a Method for Unique Determination of Aircraft Longitudinal Stability Derivatives From Transient Flight Test Data written by R R Eckhart F F Cornwell and published by Hassell Street Press. This book was released on 2021-09-09 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. To ensure a quality reading experience, this work has been proofread and republished using a format that seamlessly blends the original graphical elements with text in an easy-to-read typeface. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Book Synopsis Input Design for Identification of Aircraft Stability and Control Derivatives by : Narendra K. Gupta
Download or read book Input Design for Identification of Aircraft Stability and Control Derivatives written by Narendra K. Gupta and published by . This book was released on 1975 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: An approach for designing inputs to identify stability and control derivatives from flight test data is presented. This approach is based on finding inputs which provide the maximum possible accuracy of derivative estimates. Two techniques of input specification are implemented for this objective - a time domain technique and a frequency domain technique. The time domain technique gives the control input time history and can be used for any allowable duration of test maneuver, including those where data lengths can only be of short duration. The frequency domain technique specifies the input frequency spectrum, and is best applied for tests where extended data lengths, much longer than the time constants of the modes of interest, are possible. These technqiues are used to design inputs to identify parameters in longitudinal and lateral linear models of conventional aircraft. The constraints of aircraft response limits, such as on structural loads, are realized indirectly through a total energy constraint on the input. Tests with simulated data and theoretical predictions show that the new approaches give input signals which can provide more accurate parameter estimates than can conventional inputs of the same total energy. Results obtained indicate that the approach has been brought to the point where it should be used on flight tests for further evaluation.