Whirl flutter and rotor hub center’s motion image of tiltrotor aircraft
نویسندگان
چکیده
منابع مشابه
A Variable Diameter Short Haul Civil Tiltrotor
The Short-Haul-Civil-tiltrotor (SHCT) component of the NASA Aviation System Capacity Program is an effort to develop the technologies needed for a potential 40-passenger civil tiltrotor. The variable diameter tiltrotor (VDTR) is a Sikorsky concept aimed at improving tiltrotor hover and cruise performance currently limited by disk loading that is much higher in hover than conventional helicopter...
متن کاملMathematical modeling and control of a tilt-rotor aircraft
This paper presents a novel model of large-size tilt-rotor aircraft, which can operate as a helicopter as well as being capable of transition to fixed-wing flight. Aerodynamics of the dynamic large-size tilt-rotors based on blade element method is analyzed during mode transition. For the large-size aircraft with turboshaft engines, the blade pitch angles of the rotors are regulated to vary acco...
متن کاملLimit Cycle Oscillations of Aircraft due to Flutter-Induced Drag
The present work is a continuation of earlier work by the author on the energetics of flutter. It has been shown in earlier work that the energy for flutter comes from propulsion, i.e., flutter leads to increase in drag and thus the thrust has to be increased in order for the wing to maintain instability. In reality, the thrust is not increased to maintain the speed while the wing goes into flu...
متن کاملRotor Wake/Fixed Wing Interactions with Flap Deflection
The basic features in the interaction of a rotor wake with a wing in low-speed forward flight are studied using low-speed wind tunnel experiments. The configuration captures several of the aerodynamic interactions in the tiltrotor transition phase, and during wake/empennage interactions. Previous work showed that the pressure field on the wing surface below the rotor is dominated by n-per-rev "...
متن کاملDesigning, validation, and reliability assessment of software to acquire kinematics parameters of motion by image processing
Motion analysis systems are useful and effective equipment in biomechanics research. Unfortunately these systems are available for few researchers because these are expensive equipment. The aim of this study was to design and validation of a practical and inexpensive software, to determine the exact markers position in space and compute the kinematic of movement. In designing the software, the ...
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ژورنال
عنوان ژورنال: SCIENTIA SINICA Technologica
سال: 2014
ISSN: 1674-7259
DOI: 10.1360/092013-1213