This paper presents the analysis and synthesis of a multivariable control system for a UH-60 Black Hawk helicopter in forward flight by taking the fatigue life of critical components into consideration. In particular, this paper investigates the impact of the control system bandwidth on both the handling qualities of the helicopter and the fatigue life of a rotor component control horn. The results of non-linear model simulations of on-axis doublets and one maneuver reveals that fatigue life is very sensitive to the control system bandwidth and the level of initial damage. For example, a 45 deg of angle right turn at 140 knots may cause a 148 % increase in fatigue damage in the control horn for only a 1.3 radian per second increase in control system bandwidth.
Robust multivariable control of rotorcraft in forward flight: Impact of bandwidth on fatigue life
Die robuste multivariable Regelung eines Hubschraubers im Vorwärtsflug: Einfluß der Regelungs-Bandbreite auf die Dauerfestigkeit
Journal of the American Helicopter Society ; 43 , 3 ; 195-201
1998
7 Seiten, 6 Bilder, 5 Quellen
Article (Journal)
English
Hubschrauber , Flugregelung , Systemanalyse , Steuerungs- und Regelungssystem , Lebensdauer , Bauteil , Rotor (Drehflügel) , Ermüdungsfestigkeit , Modellsimulation , Nichtlinearität , Flugverhalten , Bandbreite (Frequenz) , Gewichtungsfunktion , Übertragungsfunktion , Blockschaltbild , Rechenmodell , Kinematik
Robust multivariable control of rotorcraft in forward flight: Impact of bandwidth on fatigue life
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