The aim of the article is to assess the influence of the angular speed on the aerodynamic characteristics of NACA 16-006 airfoil. In the numerical simulations, the flow was considered viscous, compressible, and turbulent (the SST k-ω turbulence model was applied). In the initial steady-state calculations, three structured computational meshes were evaluated, all providing consistent results with experimental data. The study mainly focused on unsteady simulations, in which the airfoil’s angle of attack was changed from 0 to 5 at specified constant angular velocities. The time courses of the lift, drag and pitching moment coefficients, as well as airflow parameters around the airfoil were investigated. The study facilitates the selection of a suitable method for evaluating the effectiveness of an all-moving stabilizer of a cruise missile model

<ns3:p>This work presents a nonlinear kinematic model of tracked autonomous mobile platform. The kinematic model is described in 2D coordinate configuration considering nonholonomic constraints. A detailed description of the presented model is necessary to develop a complete nonlinear dynamic model of the vehicle, necessary for developing the control system.</ns3:p>

<ns3:p>This work presents a nonlinear fully coupled tracked autonomous mobile platform model. Based on kinematic relationships, described in planar configuration considering nonholonomic constraints, the dynamic model of the mobile platform model is presented. The developed model of the platform is used in a simple control system to perform simulation tests. The results are compared with results of other works to check and proof the usefulness of developed model. The obtained results and comparisons are presented in the paper.</ns3:p>

The article discusses the influence of mass, canopy radius and aerodynamic characteristics of the parachute on the motion of the parachute-payload system. The calculations were performed by solving the equations of motion, which form a system of twelve differential equations. The 4th-order Runge-Kutta method implemented in the Mathematica software environment was used. The results of the calculations are presented in the form of graphs of flight parameters as a function of time.

In the introduction of this article the „k” nearest neighbors method is presented, which can be use both for classification and regression tasks. The process of designing and built the model of the „k” nearest neighbors method was characterized, noting the lack of a generalizing model for the analyzed problem in the method and the possibility of making predictions for new predictor values. Based on the diagnostic laboratory test results, the „k” nearest neighbors model was designed for artillery igniters of the KW-4 type. The predictors and input parameters were specified, on the basis of which the proprietary model was built in the „k” nearest neighbors method. The obtained form of the model was analyzed in terms of the validity of the cross-test and the value of the number „k”. Further models were also built according to the „k” nearest neighbors method for other artillery igniters and for RGM-6 fuses, the results of which were much worse than the KW-4 igniters. Finally, the model was designed according to the input parameters suggested by the Statistica software. The model built in this way turned out to be the optimal model from the point of view of the obtained initial indicators and it should be implemented for use.

This article addresses the issue of aging passenger vehicles and their impact on air pollutant emissions. The problem of vehicle aging and the related change in air pollutant emissions was analyzed based on the operational mileage of passenger vehicles. The research method included measuring the actual emission of RDE air pollutants using research equipment, i.e., the SEMTECH DS exhaust gas component analyzer. The tests were conducted on vehicles with compression-ignition engines of different operating ages, different mileage, and similar displacement engines (1.9 dm3 - 2.0 dm3) equipped with a manual gearbox.

A steel wire rope, which comes in contact with the aircraft during the emergency landing procedure, is one of the main elements constituting a vital component of the aircraft arresting system. Currently, the technical condition of steel wire ropes in aircraft arresting systems is examined visually which has substantial limitations unfortunately. Authors have proposed further scope of steel wire rope examination that is the MTR magnetic method which is applied in other industries in order to improve the wire rope’s defects detection efficiency. Analysis of the test results proved the methodology is credible and the testing apparatus selected for the current rope in the aircraft arresting systems is highly effective. The results also confirm that the correctly applied steel wire rope exhibits high durability in any weather conditions at the airport and shows no signs of corrosion after expiration of its service life.

The aim of the paper is to draw attention to the emissions of toxic compounds into the atmosphere problem by seagoing ships. Annex VI of the MARPOL Convention, which came into force in 2005, concern the prevention of air pollution from ships, forced shipowners to use solutions aimed at limiting the emission of these harmful substances into the atmosphere. One of the instruments enabling the implementation of these guidelines is the design energy efficiency index EEDI, introduced obligatorily for designed and newly built ships. In turn from 2013, the regulations also oblige shipowners to maintain an effective energy management plan during ship's operation, SEEMP (Ship Energy Efficiency Management Plan). The paper presents factors that influence the reduction of fuel consumption by ships, leading to a reduction in emissions of harmful substances into the atmosphere and thus achieving the required EEDI and other indicators. These are factors related to the ship's hull, the main propulsion engine and the propeller-rudder system. The influence of each of these factors on the level of fuel consumption by the ship was indicated. The work highlights the methods of reducing fuel consumption by seagoing ships aimed at reducing emissions of toxic compounds into the atmosphere, which are currently the most popular and effective, and relate mainly to the hull and main propulsion engines.

The article presents the basic types of intelligent materials and their properties. Examples of applications of this type of materials in the aviation industry were mentioned and an attempt was made to analyze the possibilities of their use in the future. Possible development directions for the use of intelligent materials in aviation were determined.

As a result of the digitalization of industry and human activity environments, and also the development of machine intelligence, it is reasonable to start a debate on the safety of technology with machine intelligence. Machine intelligence is a kind of extension and reinforcement of humans in the area of building specific data and knowledge resources with a focus on their purposeful and safe use for specific needs. The subject of the statement is the analysis of selected literature on the safety of technology with machine intelligence.