Dynamic stability analysis of aircraft flight in deep-stall

Torbjørn Cunis, Jean-Philippe Condomines, Laurent Burlion, Anders La Cour-Harbo

Research output: Contribution to journalJournal articleResearchpeer-review

1 Citation (Scopus)

Abstract

Beyond aerodynamic stall, the analysis of aircraft flight requires models accurately representing nonlinearities and instabilities. Previous bifurcation analysis studies therefore had a priori knowledge of the aircraft dynamics including dynamic damping. Yet, unlike airliners, extensive wind-tunnel tests and high-fidelity models are rarely available for small unmanned aircraft. Instead, continuous fluid dynamic simulations may provide basic insights into the aerodynamics, however limited to static conditions. In this paper, bifurcation analysis is presented as a tool to discuss the effects of unidentified pitch-damping dynamics during deep-stall transition that allows development of a nonlinear pitch-damping model for a small unmanned aircraft. By preliminary study of the static case, the model is extended based on deep-stall flight data to predict dynamics and stability. As a result, the deep-stall modes of the extended model are investigated in full envelope.

Original languageEnglish
JournalJournal of Aircraft
Volume57
Issue number1
Pages (from-to)143–155
Number of pages13
ISSN0021-8669
DOIs
Publication statusPublished - 2020

Fingerprint Dive into the research topics of 'Dynamic stability analysis of aircraft flight in deep-stall'. Together they form a unique fingerprint.

  • Projects

    AutoDescent: Automated precision drone descent on moving targets

    Nielsen, E., la Cour-Harbo, A., Jakobsen, J. & Totu, L. C.

    Innovation Fund Denmark

    01/01/201530/06/2018

    Project: Research

    Activities

    • 1 Hosting a guest lecturer

    Torbjørn Cunis

    Anders La Cour-Harbo (Host)

    19 Jun 201821 Jun 2018

    Activity: Hosting a guest lecturer

    Equipment

    Drone Research Lab

    Anders la Cour-Harbo (Manager), Simon Jensen (Operator), Frank Høgh Rasmussen (Other), Jesper Dejgaard Meyer (Other), Aitor Ramirez Gomez (Other), O. M. Bektash (Other), Tobias Leth (Other), Luminita Cristiana Totu (Other), Jacob Naundrup Pedersen (Other), Stefano Primatesta (Other), Petr Gabrlik (Other) & Morten Bisgaard (Operator)

    Department of Electronic Systems

    Facility: Testing facility

  • Cite this