Measuring systems used in aircraft flight testing

The basis for designing any measuring system is a research program defining the objectives, objects, methods, ways of processing and presenting research results in a form that facilitates inference, as well as the technical means necessary to implement the program. One such means is the apparatus that forms a more or less complex measuring system. The measuring apparatus includes:  measuring devices used to convert the measured physical quantity into an optical, mechanical, or electrical signal (indicators, transmitters, sensors, transducers);
 intermediate devices used to amplify or adjust the signal to the required value or form;
 devices recording the occurring phenomena (cameras, recorders);
 devices decoding the recorded information (decoders, computers).
MEASURING SYSTEMS USED IN FLIGHT TESTS OF AIRCRAFT
Any design of any measuring system is usually (or at least, should be) based on two fundamental elements, i.e.: a testing-work program that defines objectives, objects exposed to tests, methods, and techniques of handling the test results to display them in the form that makes inference easier, and engineered means indispensable to perform and successfully accomplish this program. One of such means is the apparatus that makes up a more or less complicated measuring system.
It is usually composed of the following items:
– measuring devices capable of converting physical quantities that are to be measured into optical, mechanical, or electrical input signals (indicators, transmitters, sensors, transducers);
– ‘intermediate’ devices used to amplify and/or adjust any signal gained to some required value or form; (…)

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