Question D Aviation Safety Risk Analysis and Flight Technology Assessment Questions
Flight safety is the basis for the survival and development of the civil aviation transportation industry. With the rapid development of my country's civil aviation industry, research on flight safety issues is becoming more and more important. On March 21, 2022, the "3.21" air crash ended the best safety record in the history of China's civil aviation safety flight of 100.59 million flight hours. The occurrence of serious flight accidents will not only bring huge economic losses to airlines, but also pose a great threat to the lives of passengers. Therefore, it is necessary to focus on flight safety issues, strengthen aviation safety research, comprehensively utilize existing data to strengthen scientific management, effectively improve the quality of employees, monitor and warn risks through targeted and systematic control methods, and then reduce the probability of flight accidents .
Analysis of Problems and Thoughts
Problem 1:
Some QAR data has errors, and the data needs to be preprocessed to remove the false and preserve the true, so as to reduce the impact of wrong data on research and analysis. Ask your team to conduct reliability research on the data quality in Annex 1, extract some key data items related to flight safety, and analyze their importance
Question 2:
During the entire flight from takeoff to landing, the aircraft ensures flight safety through a series of flight controls, which mainly include roll control, pitch control, etc. At present, domestic airlines monitor flight maneuvers through overruns. Although this monitoring method can quickly identify aircraft state deviations, it can only tell safety managers what happened, and cannot immediately determine the cause of such deviations. For this reason, the cause of this deviation can be analyzed through the process change of the joystick. According to Annex 1, please provide a reasonable quantitative description of the flight control. The figure below shows the change curve of the stick position during the 3 landings. The red curve describes the process of a heavy landing (landing G value exceeds a given limit value). The heavy landing is mainly due to an improper release of the stick at low altitude by the flight crew As a result, there is an obvious sag in the 5 seconds before touchdown in the red curve, which is a release of the stick that needs to be described quantitatively.
Question 3:
The causes of different overruns vary, sometimes specific airports are prone to specific overruns, sometimes specific weather is prone to specific overruns, and sometimes specific pilots are prone to specific overruns. Please study the data in Appendix 2, analyze the different situations of overruns, and study the basic characteristics of different overruns, such as analyzing which routes the aircraft is on or which airports are prone to overruns, etc. This question can be solved by statistical
modeling For calculation, the chi-square test can be used to study the overall difference, and then the specific difference between each group under the variable can be studied through the column ratio, and then TGI can be used to describe the degree of difference.
Question 4
The research on aircraft operation data is generally divided into two categories, one is the operational performance of pilots obtained through the Line Operations Safety Audit (LOSA), and the other is based on the suggestions of relevant scholars and based on flight parameters. Flight Technology Assessment. According to Annex 3, please establish a mathematical model to explore a flight technology evaluation method based on flight parameters, and analyze the pilot's flight technology. The "different qualifications" in the data table represent the different skill levels of the pilots
Question 5
With the advancement of technology, it is possible to install a real-time transmission QAR data recording system on civil aviation airliners in the future. This "real-time flight data" technology can transmit flight flight data to the ground analysis system in near real-time , greatly improving the ability of risk identification and prevention. Assuming that the flight data can be transmitted in real time by land and air, if you are the safety manager of the airline, please establish a real-time automatic early warning mechanism for the airline to prevent possible safety accidents, and combine the data in Appendix 1 to give the simulation results.
Click here to view the complete problem-solving code and data .