منابع مشابه
Rotor Wake Investigation Using the Smoke Flow Visualisation Technique
Experiments were carried out on a small four bladed rotor at different climb rates. The smoke-filament technique was used to visualise the rotor tip vortices; video equipment was then used to record the images produced. The recorded images were digitised and enhanced to assist in the identification of the vortex location. The vortex trajectories were compared with established data and with the ...
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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 "...
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Same as Report (SAR) 18. NUMBER
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Time-synchronised flow velocity, temperature, and heat flux measurements were preformed to characterise the interaction of a single rising ellipsoidal bubble with the free convection flow from a heated vertical flat surface. The heat transfer measurements from the surface were provided by a hot film heat flux sensor calibrated using a pre-calibrated microfoil heat flux sensor. Two thermocouples...
متن کاملAdaptive Control of Separated Flow
Adaptive closed-loop control is used to optimize the lift-to-drag ratio of post-stall separated flow over a NACA 0025 airfoil using multiple amplitudemodulated (AM) or burst-modulated (BM), zero-net-mass-flux (ZNMF) actuators that cover the central 33% span of the airfoil. A simplex optimization approach uses the lift and drag measured by a strain-gauge balance for feedback and searches for the...
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ژورنال
عنوان ژورنال: Mathematical and Computer Modelling
سال: 1993
ISSN: 0895-7177
DOI: 10.1016/0895-7177(93)90105-8