Further results on the development of a novel VTOL aircraft, the Anuloid. Part II: Flight mechanics

Marco Petrolo*, Erasmo Carrera, Coen de Visser, Michele D'Ottavio, Olivier Polit

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

1 Citation (Scopus)


This paper presents the main outcomes of the preliminary development of the Anuloid, an innovative disk-shaped VTOL aircraft. The Anuloid has three main features: lift is provided by a ducted fan powered by a turboshaft; control capabilities and anti-torque are due to a system of fixed and movable surfaces that are placed in the circular internal duct and the bottom portion of the aircraft; the Coanda effect is exploited to enable the control capabilities of such surfaces. In this paper, results from flight mechanics are presented. The vertical flight dynamics were found to be desirable. In contrast, the horizontal flight dynamics of the aircraft shows both dynamic instability, and more importantly, insufficient pitch and roll control authority. Some recommendations and guidelines are then given aimed at the alleviation of such problems.

Original languageEnglish
Pages (from-to)421-436
Number of pages16
JournalAdvances in Aircraft and Spacecraft Science
Issue number4
Publication statusPublished - 1 Jul 2017


  • Coanda effect
  • Flyability
  • VTOL

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