Flight Envelope Information-Augmented Display for Enhanced Pilot Situational Awareness

Ackerman, Kasey A.; Xargay, Enric; Talleur, Donald A.; Carbonari, Ronald; Kirlik, Alex; Hovakimyan, Naira; Gregory, Irene M.; Belcastro, Christine M.; Trujillo, Anna; Seefeldt, Benjamin D. · 2015 · OpenAlex

DOI: 10.2514/6.2015-1112

archive: archived pipeline: cataloged verified

Get this paper ↗ (DOI — opens at the source; we link to it, we don't host it)

Summary

This paper addresses the challenge of maintaining pilot situational awareness in transport-category aircraft equipped with advanced automation, specifically a dynamic Flight Envelope Protection (FEP) system. The authors argue that while automation improves handling qualities, it often obscures the true state of the aircraft and the status of the control systems, leading to human error and accidents. To mitigate this "opacity," the study proposes a novel interface design that augments standard cockpit displays with real-time information regarding both aircraft state and the behavior of the onboard automation. The research is grounded in the Integrated Reconfigurable Controller for Vehicle Resilience (iReCoVeR) architecture, developed through a collaboration between the University of Illinois and NASA. This architecture includes a command-limiting FEP system that prevents excursions in critical parameters such as angle of attack, bank angle, load factor, and airspeed. The FEP system utilizes dynamic limits derived from loss-of-control prediction logic, distinguishing between absolute "hard" limits and more restrictive "soft" limits based on current flight conditions. The proposed display is designed for NASA’s Transport Class Model and builds upon a standard Primary Flight Display (PFD) layout. The interface design introduces specific augmentations to enhance transparency. The PFD is modified to include tapes for angle of attack, load factor, and angle of sideslip, alongside standard airspeed and attitude indicators. These displays feature color-coded symbology—yellow bars for soft limits and distinct markers for hard limits—to visually represent the safe flight envelope boundaries. Crucially, the design incorporates a new Envelope Protection Display (EPD) located adjacent to the PFD. This EPD maps the FEP limits into the pilot’s control input space, showing the available control authority. It utilizes a pitch/roll command box and a yaw bar to indicate the pilot’s intended inputs (blue markers) versus the actual commands sent to the aircraft after FEP intervention (green markers). The display dynamically shades unsafe input areas in dark gray, providing immediate visual feedback on how automation is modifying pilot commands to maintain safety. The significance of this work lies in its approach to reducing the "out-of-the-loop" syndrome by providing veridical feedback on automation behavior. By presenting envelope limits directly in reference to pilot control actions, the interface aims to make the FEP system’s interventions transparent and intuitive. The paper concludes by outlining a forthcoming piloted simulation test plan intended to validate the display’s effectiveness, assessing the relevance of the information and the adequacy of the layout. This research contributes to the broader field of human-automation interaction by offering a concrete interface solution that supports robust pilot authority while leveraging automated protection systems.

Provenance

The full processing record for this entry. Every stage of this paper's journey through the pipeline is logged — what ran, with which tool and model, how many attempts it took, and when it last completed. Discovered via openalex_author_sweep on 2026-05-07 (13 acquisition events logged).

Summary generated by qwen3.6-27b-prismaquant on 2026-06-09; verification: verified.

Topics

Ranked by relevance to this paper. Hover a topic for its definition.

• odd communication