The role of occupational exposure to noise as a hypertension risk factor has not been established sufficiently. The aim of the study is to evaluate whether chronic exposure to different levels of noise in two groups of pilots, operating with two types of aircraft, could be a risk for hypertension, what relevance the parameters (intensity, duration and type) of exposure can have and, lastly, whe...

Aeronautics is a typical field of application of the Systems Engineering, since aircraft includes many on–board equipments. The Systems Engineering provides some suitable tool for an effective description of their functional behavior but a detailed design needs a quantitative investigation. This task is performed by resorting to modeling techniques, which define all the equations required to pr...

The purpose of an aircraft Takeoff Performance Monitoring System (TOPMS) is to provide to the pilot information pertaining to the level of safety with which a takeoff is proceeding. The authors have developed a theoretical dynamic model to investigate the feasibility of using an observer system during the roll and takeoff phases of aircraft operation to provide to the pilot the information that...

Aircraft winglets are well-established devices that improve aircraft fuel efficiency by enabling a higher lift over drag ratios and lower induced drag. Retrofitting to existing also increases payload/range the same order of burn savings, although additional loads moments imparted wing may impact structural interfaces, adding more weight wing. Winglet installation on influences numerous design p...

The paper presents a practical and relevant analytical calculation model for free turbine turboshaft working regimes engine performance. is based on post-processing method that analyzes series of experimental data, specifically focusing the percentage variations engine’s main parameters from minimum to takeoff regime. data were acquired three different types engines: TV2-117A turboshaft, AI-20K...

Preparing and pre-testing experimental setups for flight tests is a lengthy but necessary task. One part of this preparation comparing newly available measurement technology with proven setups. In our case, we wanted to compare acoustic Micro-Electro-Mechanical Systems (MEMS) large surface-mounted condenser microphones. The task started the comparison spectra in low-speed wind tunnel environmen...

The study aims to explain the size relationship between wingspan and fuselage length, which are two basic design parameters that a designer is most curious about. Within scope of study, take-off mass, length total 601 aircraft was questioned for single-piston, twin-piston, turboprop, jet types. Power correlations were used mass-based sizing length. In sizing, bad found single-piston airplanes g...

Although the design of jointed plain concrete pavements could be solved by commercial software, there is still a need for simple tools to used in feasibility studies and preliminary cost–benefit analyses. This paper analyzed verified airports composed square slabs without tie dowel bars. The examined are laid on cement-treated base layer stabilized granular subbase layer. finite element softwar...