This paper aims to analyze the characteristics of a novel, two-bladed gimbaled rotor featuring a homokinetic joint between driving shaft and rotor yoke and a fly-bar with paddles. The design and testing of this novel rotor configuration is part of the development program of a lightweight helicopter in the VLR rotorcraft certification framework. The rotor is designed with the main objective of solving some of the negative issues that affect the use of teetering rotors on light helicopters, such as strong 2/rev oscillatory loads, poor response at low g's and a pronounced sensitivity to gusts and/or large pilot inputs. A simple dynamic model is developed to allow for the interpretation of periodic motions of the system and to determine the effects of design parameters on the rotor response by means of numerical simulation and a stability analysis, a study carried out to fully assess the possible advantages of the gimbaled configuration with respect to a more traditional teetering rotor. © 2010 Association Aeronautique et Astronautique de France. All rights reserved.

Dynamic Behaviour and Response of a Two–Bladed Gimballed Rotor / G., Avanzini; DE MATTEIS, Guido; F., Lucertini; A., Torasso. - ELETTRONICO. - (2010), pp. -1228. (Intervento presentato al convegno 36th European Rotorcraft Forum tenutosi a Parigi).

Dynamic Behaviour and Response of a Two–Bladed Gimballed Rotor

DE MATTEIS, GUIDO;
2010

Abstract

This paper aims to analyze the characteristics of a novel, two-bladed gimbaled rotor featuring a homokinetic joint between driving shaft and rotor yoke and a fly-bar with paddles. The design and testing of this novel rotor configuration is part of the development program of a lightweight helicopter in the VLR rotorcraft certification framework. The rotor is designed with the main objective of solving some of the negative issues that affect the use of teetering rotors on light helicopters, such as strong 2/rev oscillatory loads, poor response at low g's and a pronounced sensitivity to gusts and/or large pilot inputs. A simple dynamic model is developed to allow for the interpretation of periodic motions of the system and to determine the effects of design parameters on the rotor response by means of numerical simulation and a stability analysis, a study carried out to fully assess the possible advantages of the gimbaled configuration with respect to a more traditional teetering rotor. © 2010 Association Aeronautique et Astronautique de France. All rights reserved.
2010
36th European Rotorcraft Forum
rotors
04 Pubblicazione in atti di convegno::04b Atto di convegno in volume
Dynamic Behaviour and Response of a Two–Bladed Gimballed Rotor / G., Avanzini; DE MATTEIS, Guido; F., Lucertini; A., Torasso. - ELETTRONICO. - (2010), pp. -1228. (Intervento presentato al convegno 36th European Rotorcraft Forum tenutosi a Parigi).
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/205697
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