This work investigates traversable wormhole solutions in exponential 𝐹(𝑄)gravity within the framework of symmetric teleparallel geometry. In this theory, gravitational interaction arises from the non-metricity scalar 𝑄, which characterizes the variation of the metric under parallel transport. A static spherically symmetric wormhole spacetime is considered, and the corresponding non-metricity scalar is explicitly calculated. Using the exponential model 𝐹(𝑄)=𝑄+𝛼𝑒𝛽𝑄, the modified gravitational field equations are derived and solved for an anisotropic matter distribution.........

Keywords: Wormhole, non-metricity, 𝐹(𝑄) gravity, Energy Conditions, Stability Analysis.

This paper presents computational results of incompressible flows simulations by solving the Navier-Stokes equations using a finite element method combined with the Characteristic Based Split scheme (CBS). The classical finite element method called Bubnov-Galerkin or Galerkin Method (GFEM) is considered the best method for solving purely diffusion problems, however, in case of problems with convection dominant as in many problems of fluid flows, the GFEM produces oscillating solutions for high Reynolds numbers. The main goal of this work is to highlight the simulation method and the results of some common 2D problems used for code validation.

Keywords: Finite elements method, Galerkin method, Incompressible flows, CBS.

In an effort to aid instructors to showcase different functions of an aircraft air-conditioning system and offer students in the aerospace class the opportunity for practical exercises and troubleshoot various faults in the aforementioned system, an aircraft air-conditioning cooling system (AACS) training model, based on ground-refrigeration working principle was developed. Several materials, tools and equipment used in the design, development and test performance. Major mechanical unit components included compressor, valve regulator, pressure gauge, condenser, dryer, capillary tube, fan, evaporator, etc., and were designed, modelled using SolidWorks CAD software application.......

Keywords: Design, Development, Aircraft, Air-conditioning, Cooling, Model, Students.

Red chili pepper (Capsicum annuum L.) is a high-value horticultural crop that is highly susceptible to Phytophthora sp., the causal agent of stem, root, and fruit rot. The excessive use of synthetic fungicides has led to environmental contamination and increased pathogen resistance, highlighting the need for environmentally friendly control alternatives. This study aimed to identify the active compounds and evaluate the effectiveness of a biopesticide formulation based on maggot pupae (Hermetia illucens) combined with ethanolic extract of bidara leaves (Ziziphus mauritiana Lam.)....

Keywords: Red chili pepper, Capsicum annuum L., Phytophthora sp. Biopesticide, Hermetia illucens, Ziziphus mauritiana Lam.

Multiphase permanent magnet synchronous machines (PMSMs) are widely applied in high-power and high-reliability systems such as electric vehicles, more electric aircraft, and marine propulsion. However, controlling these systems poses significant challenges due to the increased degrees of freedom, the requirement for harmonic suppression in the 𝑥-𝑦 subspace, and fault-tolerant capability. This paper presents a comprehensive and comparative overview of control strategies for multiphase PMSMs, including classical methods (FOC, DTC), model predictive control (MPC), sensorless control, fault-tolerant control (FTC), and advanced hybrid approaches........

Keywords: Multiphase PMSM, Model predictive control, Sensorless control, Fault-tolerant control, Integrated control framework.

Aircraft structures are not perfectly rigid. Under external forces, aircraft components deform, leading to redistribution of aerodynamic loads. This, coupled with the emergence of inertial forces, causes aeroelastic phenomena. Among these, wing bending-torsion flutter is a dangerous self-excited oscillation that can induce damage leading to structural failure. Determining the speed at which wing bending-torsion flutter initiates, also known as the critical speed (VKF), is crucial for the calculation, design, and operation of flying vehicles.

Keywords: Flutter phenomenon; Critical speed; Aeroelasticity; Thin wing model.