Investigation of a novel VTOL aircraft concept for operations in urban areas

Aerotecnica Missili & Spazio

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Title Investigation of a novel VTOL aircraft concept for operations in urban areas
Creator Sedda, Salvatore
Sardu, Costantino
Iuso, Gaetano
Subject Aerodynamics
VTLO; Flying urban car; Aircraft configurations; wind tunnel testing; aerodynamics performances; Coanda effect
Wind tunnel testing
Description Experimental investigation on a novel VTOL aircraft named \Anuloid "has been carried out to assess its aerodynamicsperformances. The study focused on two main aspects: the analysis of the Coanda eect on the 1:20 scaled modelwithout cross- ow and the aerodynamic characterization of the body, performed on the 1:5 scaled model in a large windtunnel. The rst task included the study of the Coanda eect, both in hovering and in ground eect conditions. Basicand modied geometries for the fan duct outlet were also investigated and the in uence of the Reynolds number wasevaluated. A simplied preliminary analysis on the eectiveness of the maneuverability surfaces was nally conducted.Results evidenced that the Coanda eect is present only for the modied geometries of the outlet section, whereas thebasic geometry gives rise to early ow separation. The wind tunnel tests highlighted that the aircraft has poor lift andhigh drag in normal ight condition, i.e. when < 0. In addition to this, the pitching moment is negative in thewhole range of incidences tested, resulting in longitudinal instability. Finally, pressure distributions revealed massive ow separation on both lower and upper surfaces that gives rise to a very complex unsteady and three-dimensional oweld conguration around the body.
Publisher Associazione Italiana di Aeronautica e Astronautica (AIDAA)
Contributor European FP7 project \ANULOID"(ACP2-GA-2013-334861-ANULOID).
Date 2017-12-29
Type info:eu-repo/semantics/article
Peer-reviewed Article
Format application/pdf
Source Aerotecnica Missili & Spazio; Vol 96, No 3 (2017); 165-175
Language eng
Rights Copyright (c) 2017 Aerotecnica Missili & Spazio

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