Abstract
The method of aerodynamic condition of the aircraft on the thermal fields was developed as a research result. Based on the mathematical and natural experiments, there are identified the regularities of formation of temperature gradients in the boundary layer of air that occurs after damage of external contours; there are detected parameters that affect the behavior of the temperature gradient arising from damage.
Highlights
The issue of safety, including reducing the number of aviation accidents with fatalities worldwide, regardless of the amount of air transportation is a primary objective of the international Civil Aviation Organization (ICAO: Global Aviation Safety Plan, 2011, Montreal, Canada)
The temperature gradient that occurs in the boundary layer for damage at the oncoming flow velocity of 40 m / s: a – the upper surface of the rectangular model wing profile-148; b – the lower plane of the rectangular model wing profile-148; c – temperature scale in Kelvin Analyzing the character shown in Fig. 7 graphs, it is concluded that with increasing speed the local temperature difference between damaged and undamaged areas of the model profile is growing, and its growth is not linear
In the paper the influence of the speed and angle of attack of the aircraft on the temperature gradient that occurs due to damage of rectangular shape the external contour of the wing aircraft An-148
Summary
The issue of safety, including reducing the number of aviation accidents with fatalities worldwide, regardless of the amount of air transportation is a primary objective of the international Civil Aviation Organization (ICAO: Global Aviation Safety Plan, 2011, Montreal, Canada). According to the Federal Aviation Administration USA (FAA) annually in civil aviation there are about five huge aircraft accidents in which an important role is played by the collision of aircraft with biological, mechanical or electrical forces. At the same time every year a growing number of aircraft collisions with external forces, due to several factors, namely the increasing intensity of operations and the increase in bird populations. The number of aircraft collisions with birds in flight over the period 2005–2013 biennium. Analysis of Accident Investigation showed that the highest probability of collision with mechanical, electrical and biological formations appears. In this regard, the recent research interest rise to developers for diagnostics of the outer contour of the aircraft in flight. Availability of timely, complete and accurate information about the time, place and degree of damage will objectively assess the nature of aviation accident and in accordance with this take the necessary steps to prevent its development through reorganization or change of flight mode control actions
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