Recently an extensive growth in the market for Unmanned Aerial Vehicles (UAVs, drones) has been observed. Because of numerous advantages, their application in various areas is wide, starting with military, through civilian – specialized up to amateur. The world market for civilian commercial...

The aim of this study was to investigate the effects of mini Trailing-Edge Devices (mini TEDs) on the aerodynamic characteristics of the RAE 2822 airfoil. Using ANSYS Fluent software, numerical simulations were conducted to analyze the compressible flow around the airfoil at Mach number (Ma)...

Purpose: Gait after a stroke is characterised by a number of abnormalities, such as reduced walking speed, impaired stability, as well as asymmetry. This study presents a novel assistive device designed to aid gait training in stroke survivors by providing integrated visual, auditory, and tactile stimuli informing about lower limb weight-bearing and step length symmetry. Methods: Nine patients with hemiparesis at an early stage post-stroke were included in the study. A markerless 3D system was applied to assess gait. Participants walked at self-selected pace and were wearing their own orthotic devices. Gait speed, step length, gait phase duration, and cadence were measured. A symmetry index was calculated for step length and lower limb weight-bearing. The programme consisted of 10 gait training sessions with the assistive device, each session taking 30 minutes. Results: Improved gait parameters were observed when acoustic and visual prompting was applied alone or in combination with tactile prompting. At the end of the programme, decrease in step length asymmetry was observed and there was no statistically significant difference in the mean step length between the paretic and non-paretic lower limb (p=0,002). An improvement was shown in the distribution of lower limb weight-bearing in a standing position, and the mean value of limb weigh-bearing symmetry index was significantly lower compared to the baseline (p=0,0001). Conclusions: Integrated tactile, auditory, and visual prompting may beneficially affect post-stroke gait rehabilitation, by inducing improvements in gait pattern, symmetry, body balance, and walking speed.

The aim of this article was to design an optimal cross-section of the front wing for a Formula Student vehicle, conducted in compliance with applicable technical and aerodynamic regulations. The article focuses on analyzing various configurations of four-element wings supported by Computational...