Novosibirsk State Technical University (NSTU) used a specially created program to study the operation of an anti-overload suit for pilots under various overloads.
The Department of Technical Thermophysics of the Faculty of Aircraft of NSTU-NETI analyzed the effect of an anti-overload suit on the pilot's body — special equipment that creates pressure in the abdominal cavity and lower extremities during overloads due to compression of the body, which improves blood supply to the brain. For the study, a unique calculation program based on the Bernoulli equation was used, which was developed by students of the specialty "Life Support systems and aircraft equipment" of the UAV.
According to Alexander Chichindaev, Professor of the Department of Technical Thermophysics at NSTU-NETI, Doctor of Technical Sciences, Bernoulli equations for computational studies of the operation of an anti-overload suit are compiled for the main tissues of the human body, taking into account the diameter of the aorta, arteries, arterioles and capillaries. In addition, it was decided to include characteristics such as gender and age in the program. "The idea of applying criteria such as gender and age was good, because it allows us to assess the special requirements for the physical parameters of pilots, which can be used to calculate simulations of varying degrees of compression of the suit," said Alexander Chichindaev.
The research allowed us to simulate various degrees of compression of the overload suit, from weak to strong, which pilots experience during aerobatics: a dead loop, a barrel, a turn, and others. "We also managed to establish quantitative parameters of blood flow in the pilot's body, in particular, we were convinced that with small overloads it is harmful to create high pressure: in this case, blood does not flow to the lower extremities and they fail. The obtained results have become a good basis for teaching our students with the help of a modified and updated program, which we plan to register soon," the scientist emphasized.
Earlier, the Department of Technical Thermophysics presented a unique program for calculating the operating characteristics of the human thermoregulation system at low temperatures. For the simulation, the human body was "divided" into separate cylinder elements: arms, legs, chest, abdominal area with internal organs, taking into account the muscular and circulatory systems.