Flight Test Instrumentation
Flight Test Instrumentation

Author: M. A. Perry

Publisher: Elsevier

Published: 2016-11-04

Total Pages: 305

ISBN-13: 1483156729

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Flight Test Instrumentation is a collection of papers presented at the Third International Symposium on Flight Test Instrumentation held in 1964 under the auspices of the Department of Flight of the College of Aeronautics in Cranfield, UK. The symposium provided a forum for discussing advances in flight test instrumentation and covered topics ranging from pre-detection recording in the megacycle range to some problems and uses of fuel flow measurements in supersonic aircraft. This volume is comprised of 14 chapters and begins by describing angle of attack and angle of sideslip measurements using fully de-iced non-movable differential pressure-sensing heads and low-range capacitive pressure transducers. The next chapter explores errors in stability derivative measurements that can occur due to shortcomings in instrumentation design, as well as the implications of such errors for the development of a modern supersonic aeroplane. The application of the vector plotting technique to flight flutter testing of the Hawker Siddeley Trident is then considered. Subsequent chapters focus on the use of high-accuracy instrumentation techniques for non-steady flight measurements; strain gauging for transient heating cases; and free-flight model techniques for aerodynamic research at supersonic and hypersonic speeds. This book will be a useful resource for students, practitioners, and officials of aeronautics.

Flight Testing and Real-Time System Identification Analysis of a UH-60A Black Hawk Helicopter with an Instrumented External Sling Load
Flight Testing and Real-Time System Identification Analysis of a UH-60A Black Hawk Helicopter with an Instrumented External Sling Load

Author: Allen H. McCoy

Publisher:

Published: 1997-12

Total Pages: 96

ISBN-13:

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Historically, helicopter and load combinations have been qualified through flight testing, requiring considerable time and cost. With advancements in simulation and flight test techniques, there is potential to substantially reduce costs and increase the safety of helicopter sling load certification. Validated simulation tools make possible accurate prediction of operational flight characteristics before initial flight tests. Real time analysis of test data improves the safety and efficiency of the testing programs. To advance these concepts, the US Army and NASA, in cooperation with the Israeli Air Force and Technion, under a Memorandum of Agreement, seek to develop and validate a numerical model of the UH-60 with sling load and demonstrate a method of near real time flight test analysis. This thesis presents results from flight tests of a US Army Black Hawk helicopter with various external loads. Tests were conducted as the US first phase of this MOA task. The primary load was a container express box (CONEX), which contained a compact instrumentation package. The flights covered the airspeed range from hover to 70 knots. Primary maneuvers were pitch and roll frequency sweeps, steps, and doublets. Results of the test determined the effect of the suspended load on both the aircraft's handling qualities and it's control system's stability margins. Included were calculations of the stability characteristics of the load's pendular motion. Utilizing CIFER software, a method for near-real time system identification was also demonstrated during the flight test program.

Instrumentation Systems
Instrumentation Systems

Author: Enoch J. Durbin

Publisher: Elsevier

Published: 2014-05-12

Total Pages: 572

ISBN-13: 1483222314

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Flight Testing, Volume IV: Instrumentation Systems serves as a guide to flight test instrumentation systems for establishing flight test programs. This book provides aircraft flight testers with the information required to appreciate the capabilities and limitations of the instrumentation techniques, indicating some of the many alternatives possible in flight instrumentation. It considers the systems concept in planning flight test instrumentation and functional organization of the component parts of an instrumentation system, followed by a discussion of the components of a flight data acquisition and reduction system that are organized into functional categories. Within these categories, a comparison is made between the various data collection systems and data reducing systems. The similarities, advantages, and limitations of each type of system component and significance of the fundamental properties of each device are also noted in this volume. This compilation is written primarily for persons not well-trained in electronics with special emphasis toward promoting the systems point of view in considering the problems of measurement in flight.