By Mark Tischler, Robert Remple
Even supposing many books were written at the conception of approach id, few can be found that supply an entire engineering therapy of approach id and the way to effectively use it on flight automobiles. This publication offers the original standpoint of over twenty years of flight-test purposes to either plane and rotorcraft and is a beneficial source for college kids, operating engineers, and others attracted to atmospheric flight mechanics, modeling and simulation, and try out and assessment. It provides confirmed tools, sensible directions, and real-world flight-test effects for a variety of cutting-edge flight cars, from small uncrewed aerial autos (UAVs) to giant manned aircraft/rotorcraft.
Beginning with the elemental techniques of approach id, each one bankruptcy strains an easy simulation instance and actual flight examples in the course of the step by step approach from instrumentation and information checking to version extraction and version verification. The frequency-response procedure, that's certain to this ebook, is principally like minded for procedure identity of plane and rotorcraft dynamics versions from flight-test info. a whole bankruptcy is dedicated to higher-order modeling of helicopters. Many functions are incorporated to illustrate how the goods as a result of procedure identity are used. particular purposes comprise flight mechanics and handling-qualities analyses, balance margin decision, structural mode selection, and simulation version constancy assessment.
The e-book assumes wisdom of the elemental techniques 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 procedure or research program is illustrated with pix bought from the procedure identity software program (CIFERÆ) supplied with the booklet. Case stories in keeping with genuine flight-test initiatives are incorporated to boot! as difficulties for college kids to unravel utilizing the supplied CIFERÆ software.
A ideas guide, written via Christina M. Ivler and Mark B. Tischler is out there from the writer.
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Additional resources for Aircraft and rotorcraft system identification : engineering methods with flight-test examples
A key role for this author was to be the “reality check” on whether the information was written in a manner that would be clear and understandable to the target audience. 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.
S. fixed-wing aircraft (MIL-STD-1797 Ref. 5) involves using system identification to extract transfer-function models, also referred to as equivalent system models, from flight-test frequency responses. System-identification procedures and example results of handling-qualities and flight-control analyses of rotorcraft and fixed-wing aircraft are presented extensively in this book. 3 Special Challenges of Rotorcraft System Identiﬁcation There are special problems and challenges in system identification from rotorcraft flight data as compared to data from fixed-wing aircraft.
We can record the aircraft dynamic response to the control inputs in numerical form using an onboard measurement system. Typical flight-vehicle measurements for flight dynamics consideration are shown in the figure: translational velocities, angular velocities, attitudes, linear accelerometers, and aerodynamic angles. Additional measurements could include the engine response, wing strain, and aircraft position. A dynamic model relates the control inputs to the vehicle dynamic response. This model can be as simple as a graph of the input-to-output response or as complex as a set of differential equations of motion.