Elements of the SHARCS (Smart Hybrid Active Rotor Control System) Hybrid Control concept are demonstrated via two sets of whirl tower tests. Hybrid Control stands for combining a flow control (such as an Actively Controlled Flap or Active Twist Rotor) and of a structural (or stiffness) control device on a helicopter blade. A Hybrid Control system promises to reduce vibration and noise on helicopters simultaneously as well as to improve the efficiency of the flow control device. For the structural control system, a unique and entirely original Active Pitch Link has been developed at Carleton University, which is capable of dynamically controlling the torsional stiffness of a blade. Design, prototyping, static and whirl tower testing of this device is presented in the paper. A second set of whirl tower tests of an Active Twist Rotor equipped with a range of springs instead of the conventional pitch link, demonstrates that the Active Pitch Link shall indeed be capable of lowering the torsional stiffness of the blade. For these tests, the modal parameters of the blade were evaluated via a novel "Output-Only" method, which represents the first application of such methodology for rotary-wing applications.

Whirl tower demonstrations of the SHARCS hybrid control concept / D., Feszty; F., Nitzsche; A., Mander; Coppotelli, Giuliano; F., Vetrano; J., Riemenschneider; P., Wierach. - STAMPA. - 1:(2009), pp. 184-196. (Intervento presentato al convegno Annual Forum Proceedings - AHS International tenutosi a Grapevine, TX, USA nel 27-29/Maggio/2009).

Whirl tower demonstrations of the SHARCS hybrid control concept

COPPOTELLI, Giuliano;
2009

Abstract

Elements of the SHARCS (Smart Hybrid Active Rotor Control System) Hybrid Control concept are demonstrated via two sets of whirl tower tests. Hybrid Control stands for combining a flow control (such as an Actively Controlled Flap or Active Twist Rotor) and of a structural (or stiffness) control device on a helicopter blade. A Hybrid Control system promises to reduce vibration and noise on helicopters simultaneously as well as to improve the efficiency of the flow control device. For the structural control system, a unique and entirely original Active Pitch Link has been developed at Carleton University, which is capable of dynamically controlling the torsional stiffness of a blade. Design, prototyping, static and whirl tower testing of this device is presented in the paper. A second set of whirl tower tests of an Active Twist Rotor equipped with a range of springs instead of the conventional pitch link, demonstrates that the Active Pitch Link shall indeed be capable of lowering the torsional stiffness of the blade. For these tests, the modal parameters of the blade were evaluated via a novel "Output-Only" method, which represents the first application of such methodology for rotary-wing applications.
2009
Annual Forum Proceedings - AHS International
Active rotor control; Helicopter blades; Modal parameters; Tower testing
04 Pubblicazione in atti di convegno::04b Atto di convegno in volume
Whirl tower demonstrations of the SHARCS hybrid control concept / D., Feszty; F., Nitzsche; A., Mander; Coppotelli, Giuliano; F., Vetrano; J., Riemenschneider; P., Wierach. - STAMPA. - 1:(2009), pp. 184-196. (Intervento presentato al convegno Annual Forum Proceedings - AHS International tenutosi a Grapevine, TX, USA nel 27-29/Maggio/2009).
File allegati a questo prodotto
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/504447
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 7
  • ???jsp.display-item.citation.isi??? ND
social impact