Download Aircraft and rotorcraft system identification : engineering by Mark Tischler, Robert Remple PDF

By Mark Tischler, Robert Remple

Even if many books were written at the concept of process identity, few can be found that offer an entire engineering therapy of procedure id and the way to effectively use it on flight autos. This publication offers the original viewpoint of over two decades of flight-test purposes to either airplane and rotorcraft and is a invaluable source for college students, operating engineers, and others drawn to atmospheric flight mechanics, modeling and simulation, and try and review. It offers confirmed equipment, sensible guidance, and real-world flight-test effects for quite a lot of cutting-edge flight cars, from small uncrewed aerial cars (UAVs) to giant manned aircraft/rotorcraft.

Beginning with the fundamental suggestions of method id, every one bankruptcy strains an easy simulation instance and actual flight examples in the course of the step by step procedure from instrumentation and knowledge checking to version extraction and version verification. The frequency-response process, that's distinctive to this publication, is principally compatible for approach id of plane and rotorcraft dynamics types from flight-test facts. a whole bankruptcy is dedicated to higher-order modeling of helicopters. Many purposes are incorporated to illustrate how the goods due to approach identity are used. particular purposes comprise flight mechanics and handling-qualities analyses, balance margin choice, structural mode decision, and simulation version constancy assessment.

The e-book assumes wisdom of the elemental recommendations of aeronautics, Laplace transforms, and flight dynamics and classical regulate. Emphasis is put on engineering equipment and interpretation of flight-test effects and every key technique or research software is illustrated with photos got from the method identity software program (CIFERÆ) supplied with the e-book. Case reports according to actual flight-test initiatives are integrated besides! as difficulties for college kids to unravel utilizing the supplied CIFERÆ software.

A recommendations guide, written by way of Christina M. Ivler and Mark B. Tischler is on the market from the writer.

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Extra info for Aircraft and rotorcraft system identification : engineering methods with flight-test examples

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The ideas and results presented herein draw heavily on many research collaborations over the years. Thanks go foremost to the many AFDD and NASA colleagues that have worked with the leading author and whose results are presented and referenced throughout this book. /FRG Memorandum of Understanding (MOU) and with the AGARD Flight Mechanics Panel Working Group 18 and Lecture Series 178 on Rotorcraft System Identification (under the outstanding leadership of Peter G. Hamel). In addition, many photos and results presented herein reflect long and successful research collaborations with numerous companies and research organizations in the United States and internationally.

There are many applications based solely on the frequency-response characterizations, including handling-qualities analysis in terms of the bandwidth and time-delay parameters, pilot-in-the-loop analysis, stability margin determination, classical control system design, and validation and tuning of physics-based simulation models. For these and many other applications, the nonparametric model is often sufficient. The parametric modeling stage generally involves a more intensive effort, with added focus on the physical understanding of the system being modeled to ensure that the appropriate model structure is adopted.

4 Characteristic (continued) Frequency-response methods Time-response methods Number of points Small number of points are included in iterative identification criterion, which improves computational efficiency. , factor of 30 increase). Algorithms or equations used Identification algorithms are very efficient because frequency responses are determined algebraically from updated parameters. Equations of motion must be numerically integrated in time for each iterative update in the parameters. , rotorcraft, high-performance fighter aircraft).

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