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A slender-bodied vehicle with asymmetrically arranged protuberance generates strong side force due to asymmetric vortices, even at a low angle-of-attack. We investigated effects of the well-known RANS turbulence models [SA-R (Crot = 0.0, 1.0, and 2.0), SST, and SST-2003] by comparing the...
This paper presents a methodology to evaluate the vertiport performance by analyzing the average waiting time for electric vertical take-off and landing (eVTOL) vehicles to use the vertiport. A series of analytical processes for vertiport design, demand prediction, and performance analysis is...
The present study using active vibration control system (AVCS) attempts to actively reduce the airframe vibration responses of a lift-offset compound helicopter at 250 knots. An 11% scaled airframe structure of the Sikorsky X2 Technology Demonstrator (TD) is used for the AVCS test and simulation...
This paper describes an autonomous landing approach based on a vector field guidance and pre-simulation. A landing approach vector field is proposed to guide the vehicle to a passing point near the runway. Dubin’s Vehicle model-based 2D pre-simulation is used to predict the time remaining to the...
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