The Application of Dynamic Non-Linear Scales to Aircraft Tape Display Instruments

Abstract: The presentation introduces the novel Dynamic Non-Linear Display (DNLD) concept. DNLD is a ground-up reworking of the classic tape display format commonly used in aerospace flight instruments and process control systems, based on the application of advanced human factors principles. DNLD reconciles the mutually conflicting demands for adequate precision, sufficient display range, and dynamic legibility, that hamper conventional tape displays. Multiple simulator and flight evaluations have shown how DNLD can confer significant safety, functional, and situational advances in the cockpit, telemetry room, or ground control station. Demonstrated DNLD benefits include complete legibility at very high rates of parameter change, elimination of display saturation, and the ability to keep key parameters and trend vectors in view at all times, without comprising the requirements for fine-tracking performance. DNLD is being adopted by a number of civilian and military flight test organizations. The presentation and paper illustrate the foundational principles of DNLD, including informative videos from DNLD aerospace evaluations. The DNLD concept has been recognized through awards presented by the Society of Flight Test Engineers and the International Test Pilot School (ITPS) at their respective 2023 Annual Symposia.

Keywords: DNLD, Tape Display

DOI: 10.54941/ahfe1006852

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