МОДЕЛЮВАННЯ РОЗРАХУНКУ ДИСТАНЦІЇ ПЕРЕРВАНОГО ЗЛЬОТУ

• Дата: 2020
• Автори: Vyshenskyi, V.I., Kuleshyn, V.V., Belousov, A.A.
• Формат: Стаття
• Мова: English
• Опубліковано: V.M. Glushkov Institute of Cybernetics of NAS of Ukraine 2020
• Теми: перерваний зліт; довжина ділянки гальмування; алгоритм у реальному часі; рівняння Ріккаті
• Онлайн доступ: https://jais.net.ua/index.php/files/article/view/504
• Назва журналу: Problems of Control and Informatics

Analysis of accidents and serious incidents in civil aviation shows that an aircraft exiting the runway and terminal safety strip does not happen often when the takeoff is canceled, but it is extremely dangerous. If the cause of the aborted takeoff (for example, engine failure) is detected before reaching the «takeoff decision speed», then the aircraft usually has time to stop within the aerodrome. However, as the analysis of emergency situations shows, the real distance of the rejected takeoff (the length of the braking section until the aircraft stops completely) may differ from the value calculated in advance. Therefore, a more precise real time calculation of the rejected takeoff distance can help the crew to make a more accurate and safer “go — no go” decision. The article continues the research of the previous work of the authors. The proposed algorithm uses step interpolation of thrust, as in the previous work, and also of other aircraft parameters. With this interpolation, the Riccati equation of the plane's motion has explicit solutions. In addition to using known interpolation time intervals, the time to reach a given speed is explicitly calculated, since some parameters change abruptly upon reaching a certain speed. To check and investigate the proposed algorithm for estimating the rejected takeoff distance in real time, a computer simulation system was created. This system was used to compare the estimation of the rejected takeoff distance obtained using the proposed algorithm with the distance calculated on the basis of the full motion model using numerical integration. To confirm the adequacy of the model used, the simulation results were compared with the values obtained from the nomograms of a real aircraft. The proposed algorithm, after specifying a number of parameters, can be used in real conditions of a rejected takeoff.