March 29, 2018

Download e-book for kindle: Aircraft and Rotorcraft System Identification by Mark B. Tischler

By Mark B. Tischler

ISBN-10: 1563478374

ISBN-13: 9781563478376

Offering confirmed tools, useful instructions, and real-world flight-test effects for quite a lot of state of the art flight autos, "Aircraft and Rotorcraft approach id, moment variation" addresses the total strategy of plane and rotorcraft method identity from instrumentation and flight checking out to version selection, validation, and alertness of the implications. during this hugely expected moment variation, authors Tischler and Remple have extra committed in-depth chapters featuring prolonged version buildings and identity effects for big versatile shipping airplane, and the specific method to advance a continual complete flight envelope simulation version from person procedure id versions and trim try facts. subject matters mentioned contain: Frequency-response tools which are specially compatible for method id of flight automobile versions from flight-test info; particular instructions for flight checking out, facts research, and the correct choice of version constitution complexity; and emphasis at the value of actual perception in version improvement and purposes. exact beneficial properties: pupil model of CIFER[registered] with up to date graphical consumer interface utilizing MATLAB[registered]; a number of flight-test effects for either manned and unmanned autos illustrating the wide-ranging roles of approach identity, together with the research of flight mechanics, suggestions keep watch over, dealing with features, subsystem dynamics, structural research, higher-order versions for plane and rotorcraft, and simulation; and, broad challenge units on the finish of every bankruptcy, with many workouts according to flight-test facts supplied for the XV-15 in hover and cruise giving the reader hands-on real-world event with method identity tools and interpretation of the implications.

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Additional info for Aircraft and Rotorcraft System Identification

Example text

In such regimes, the commanded vehicle motions (signal) are often the same order of magnitude as the noise contributions to the measurements arising from vibrations (rotor, engine, INTRODUCTION AND BRIEF HISTORY and drive train), fuselage structural response, and unsteady air mass (inflow) passing through the rotor. Further complications for rotorcraft applications arise from the high-order nature of the vehicle dynamics as compared to a fixed-wing aircraft. , fuselage/wing/tail) and must be modeled as a coupled multibody dynamics system.

4 and throughout the book. The identification of dynamics models of flight vehicles from flight-test data is made difficult by many factors, as explained in this book. These are associated with the limitations of the flight-data measurement system, test inputs, signal-tonoise ratio, and test record length. The determination of rotorcraft response models is perhaps the most challenging application of system identification. These vehicles have a wide range of possible configurations-from small ducted fans to tilt-rotor aircraft, single and tandem helicopters, and helicopter/sling-load configurations.

Xxxiv The complete book is suitable for a more advanced undergraduate or graduate level course in system identification and as a resource for practicing engineers and researchers. There are extensive problem sets to be worked at the end of each chapter that give the reader (and student) hands-on experience with the systemidentification methods and interpretation of the results. These are based on the numerical simulation of the inverted pendulum, XV-15 flight-test data, and simulated flight data for a typical helicopter (provided via the AIAA website).

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Aircraft and Rotorcraft System Identification by Mark B. Tischler

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