publication . Article . 2016

Effect of active Gurney flaps on overall helicopter flight envelope

George Barakos; Rene Steijl;
Open Access
  • Published: 07 Jun 2016 Journal: The Aeronautical Journal, volume 120, pages 1,230-1,261 (issn: 0001-9240, eissn: 2059-6464, Copyright policy)
  • Publisher: Cambridge University Press (CUP)
Abstract
<jats:title>ABSTRACT</jats:title><jats:p>This paper presents a study of the W3-Sokol main rotor equipped with Gurney flaps. The effect of the active Gurney is tested at low and high forward flight speeds to draw conclusions about the potential enhancement of the rotorcraft performance for the whole flight envelope. The effect of the flap on the trimming and handling of a full helicopter is also investigated. Fluid and structure dynamics were coupled in all cases, and the rotor was trimmed at different thrust coefficients. The Gurney proved to be efficient at medium to high advance ratios, where the power requirements of the rotor were decreased by up to 3.3%. Ho...
Subjects
free text keywords: Aerospace Engineering
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