Development Of General Aviation Research Articles

Research on Airspace Conflict Detection Method Based on Spherical Discrete Grid Representation

With the continuous development of general aviation, the contradiction between the air demand of general aviation low-altitude airspace and civil aviation routes is sharp. The difficulty of airspace planning is complex and changeable, and the existing working mode of simply using computer mapping and manually finding airspace conflict contradictions can no longer meet the large-scale air use demand. In response to the existing spatial representation model of longitude and latitude grid, which has large grid deformation in high latitude areas, and the problem of slow computation speed of the conflict detection (CD) algorithm that determines whether the airspace boundary coordinates overlap, we propose a grid model that represents airspace with a spherical rhombic discrete grid of positive icosahedron and design a matrix-based digital representation method of airspace, which uses matrix product operation. The matrix product operation is used to quickly determine whether there is a conflict between airspace and airspace and between airspace and routes.

LEGAL REGULATION (FORMATION AND DEVELOPMENT) OF GENERAL AVIATION ACTIVITIES

The article examines the historical process of formation and development of national and international legal regulation of aviation activities used for non-commercial purposes. The article identified current problems that existed on the way to the further development of general aviation, and proposed ways to solve them.

Aircraft Insurance Costs Management for Sustainable General Aviation: Insights From General Aviation Enterprises in China

Little research has examined how to effectively reduce general aviation aircraft (GAA) insurance costs (premiums), even though it has grown to be a heavy financial burden adversely affecting the sustainable development of general aviation (GA). In contrast to previous research that dealt solely with airline insurance, this research studies the insurance cost management issue of GAA from the perspective of supply and demand. Specifically, this paper focuses on analyzing significant factors influencing GAA insurance premiums and the degree of incidence with the risk system. This empirical research is based on a unique dataset of GA enterprises in China during 2017 to 2019 and utilizes the second synthetic of gray incidence analysis (SSDGIA) model and entropy weight analysis. First, it is found that the fleet profile, loss record, and individual GA operational performance are the critical elements related to premiums. Additionally, there is an increasing dependence of premiums on direct loss performance. Second, the degree of incidence between premiums and the risk system (<0.8) constructed within the Human Factors Analysis and Classification System (HFACS) framework is below the expected level. The latent risk factors related to loss make a small contribution. Such findings will contribute to GA development through cost reduction and risk management. GAA operators and owners could save premium expenses by optimizing their risk management decisions and operations. The results also provide an important theoretical basis for the regulatory agency to speed up the optimization of GA risk information analysis and disclosure system. With complete GA risk information support, insurers could further improve GA risk assessment and determine long-term competitive premium rates.

Research on the construction of course system for aviation service major

In recent years, as one of the two wings of China's civil aviation, the development of general aviation has made great progress, especially with the promulgation of a series of planning and policy opinions such as Opinions on Deepening the Management Reform of China's Low-altitude Airspace jointly issued by the State Council and the Central Military Commission. The curriculum system of aviation specialty plays an important role in the development of education. Although aviation service specialty in vocational schools originated from the shortage of aviation talents and was jointly cultivated through the system construction mode, this mode did not develop with the development of social economy and vocational education, and the existing talent cultivation quality was severely restricted, which could not meet the employment needs of industry enterprises. This situation needs to be studied and improved urgently. Due to the historical reasons of China's aviation development, the degree of competition differentiation of state-owned airlines is low. If China's national aviation service is to form a complete education system, Chinese civil aviation professionals need to innovate constantly, further optimize the education system structure and build a perfect aviation service system.

The role of the USA aviation industry in the development of general aviation

The history of a relatively little-studied sub-sector of aircraft manufacturing is described: the development and production of general purpose airplanes. Data on 2690 aircraft models and their production are collected by the author. It is shown that the USA share in the production in the 20th century exceeds 80 %, although in 1930–1945 European countries were the leaders. Assumptions are made about the reasons for the change of leaders. The definition of “general purpose airplane” is given with references to the regulatory documents of the USA, European Union and Russia. It is shown that the most popular subclass of such airplanes is four-seaters, its share in the total production of aircraft with the number of seats from 3 to 11 exceeds 50 %. For the first time, the year-by-year dynamics of the development and production of general purpose airplanes in the 20th century in the world is published. Strong declines in production are mentioned during the Great Depression and in the first half of the 1980s. It is shown that the demand for general purpose airplanes decreased significantly during the aggravation of the political situation, which correlates with the confidence of potential buyers in their future. Probably, such dependence should be observed for other long-time used consumer goods. The development of new models of general-purpose aircraft was also studied. It is shown that the peak of its intensity falls on 1929, and the post-war decline in the number of developments began even during the period of growth in production – in the mid-1960s. A very strong geographic concentration has been found: almost half of all general purpose airplanes in the world are built in one town (Wichita, Kansas), where more than a dozen airplane manufacturers have located their enterprises.

Research on Trajectory Prediction Algorithm for Low-altitude Emergency Rescue Aircraft

With the rapid development of general aviation, this aviation solution is widely used in emergencies such as natural disasters, major accidents, and social security problems because of its fast start-up speed, high rescue efficiency, and less restrictions. In this paper, state-dependent mode transition hybrid estimation (SDTHE) is combined with the improved intent inference algorithm (IIIA) to obtain a more accurate trajectory prediction algorithm. The algorithm overcomes the shortcoming of the hypothesis that the likelihood function is zero in the interactive multiple model algorithm (IMM), and considers the real-time motion state and mode of the aircraft, so that the final prediction result is more accurate.

Analysis of Available Methods for Risk Assessment Dedicated to Unmanned Aerial Vehicles

Abstract Aviation is becoming more and more popular. It is influenced, inter alia, by the development of general aviation (GA) and unmanned aerial vehicles (UAV). Due to the increasing number of qualified UAV users (in April 2018 there were 6846 operators in Poland with a valid certificate of qualifications) and those performing only recreational flights, it is important to ensure an acceptable level of risk in these operations. Using the available methods, the risk of five exemplary unmanned operations was assessed. The results were compared to determine their validity.

Analysis of Low-Altitude Airspace

Low-altitude airspace resources have been the bottleneck of the development of general aviation industry and one of the key factors restricting the development of general aviation in China. Through theoretical research and on-the-spot investigation, this paper constructs a low-altitude airspace resource availability evaluation index system, uses multiple linear regression method to carry out systematic analysis, and determines the index weights at all levels. Taking Jiangsu Province as an example, the present situation of low-altitude available resources in Jiangsu Province is deeply analyzed, the actual situation and a large amount of data in various regions are summarized, the influence values of various factors on the region are calculated, and finally the availability results of low-altitude airspace resources are obtained. The research results demonstrate the scientificity and effectiveness of the method, which can provide reference for the rational utilization of low-altitude airspace resources and the declaration of general aviation activity airspace in China.

A study of flight operational challenges encountered by general aviation industry in China

General aviation industry is important in promoting national and global economy. However, in China the industry is still underdeveloped, but it has a huge potential for growth. This paper outlines a research framework for a qualitative survey to identify various issues and difficulties encountered in development and operations of general aviation industry in China. A study for technical development of general aviation (GA) industry in Liaoning province of China has been carried out after performing a focused group survey and field data collection in order to analyse issues affecting GA industry in China. Primarily, it has been observed that military control of airspace and lack of qualified aviation professionals impedes the growth of this section of the aviation industry in this country. The study primarily clarifies GA situation in China and factors affecting growth of the industry are examined. It also proposes a possibility of developing in-house aircraft maintenance facilities to promote growth of the industry in regional areas of the country.

Питання оптимізації правового регулювання сертифікації повітряних суден авіації загального призначення: вітчизняний та зарубіжний досвід

Мета: виявити напрямки оптимізації правового регулювання сертифікації повітряних суден авіації загального призначення, шляхом проведення компаративного аналізу правил, процедури та суб’єктів реєстрації цивільних повітряних суден та дозвільної системи в Україні, США, а також у країнах Європейського співтовариства. Виявлення чинників, що стримують розвиток АЗП в Україні та надання пропозиції щодо удосконалення правового регулювання сертифікації повітряних суден авіації загального призначення. Методи дослідження: використання системного підходу та компаративного методу дозволило виявити основні напрямки оптимізації правового регулювання сертифікації повітряних суден авіації загального призначення України, ґрунтуючись на досвіді провідних країн світу. Результати: в статті увага акцентується на недоліках правового регулювання вітчизняної авіації загального призначення, зокрема, законодавчій невизначеності поняття авіації загального призначення, що обмежує її розвиток у напрямку реалізації як комерційної та суттєво звужує спектр можливостей для її суб’єктів, а також робить цей сектор авіації економічно непривабливим. Суттєво ускладнює правове регулювання відсутність розгалуженої класифікації повітряних суден, яка б враховувала розміри повітряного судна, потужність двигуна, умови злету та посадки, дальність польотів, вантажопідйомність та інше. Питання оптимізації правового регулювання сертифікації повітряних суден авіації загального призначення стосуються спрощення процедури сертифікації для надлегких повітряних суден, ґрунтуючись на досвіді США, Канади, а також деяких країн Європи. Обговорення: автори пропонують шляхи оптимізації правового регулювання сертифікації повітряних суден авіації загального призначення України.

Questions and Countermeasures on Developing General Aviation Industry in China

China’s general aviation industry has exposed many problems with the low-altitude airspace expanding openness. General aviation is an important part of national economy and defence forces, the development of general aviation has a practical and far-reaching significance. By analysing the China’s current general aviation industry, combined with the importance of the development of general aviation, propose some countermeasures and suggestions for the development of China’s general aviation industry.

Design of the crashworthy structure of an urban aircraft

With the development of general aviation, the urban aircraft is around the corner. The urban aircraft with composite is considered as an ultralight vehicle and the crashworthiness is of vital importance for such an ultralight aircraft. Composites are being widely and increasingly used in the aerospace industry because of their advantages that include the high specific strength and stiffness over traditional metallic materials. Besides, composites have the potential for absorbing the energy in a crash event. The crashworthiness of the cockpit section is analyzed in this paper and some modifications in the subfloor have been made to improve the survivability of the pilot. Advances in commercial softwares have enabled engineers to simulate crash events. The three-dimensional structure model is established by use of CATIA software and the crash process is simulated by MSC/DYTRAN. By comparing the crashworthiness of composite structures, reliable basis is provided for the design of a safe and sound structure.

Free Flying and China Dream

This paper reviews the development of general aviation and aviation culture, discusses the connotation and spiritual features of aviation culture, and puts forward the idea that free flying aviation culture can promote the free and comprehensive development of human beings. Through the presentation the national aviation culture craze in the United States, and investigation of the overall progress of low-altitude airspace management reform and the enforcement of people’s aviation consciousness in China, the paper proposed that “Flying Dream” is the very reflection of “China Dream” in essence, and. It is concluded that to develop general aviation in China is a realistic demand of social progress and comprehensive development of human beings.

Research on Current General Aviation Operational Control System

As the rapid development of general aviation and the growing number of the aviation enterprise and aircraft, a great pressure comes to industry supervision of civil aviation and operational control of general aviation. Because of the shortage of solution of the general aviation, there’s a big difficulty on operational protection. This paper elaborates the current situation of general aviation enterprise of our country, analyzes the shortage of it, combines with the characteristic of general aviation operational control and units being researched, and has a systematic research, then ensures the need of general aviation enterprise‘s operational control.

A Study on the Flight Data Visualization of General Aviation Based on Flightgear

The development of general aviation is very rapid, but general aviation has not built the platform of flight data visualization all the time. A system of constructing the flight data visualization system based on FlightGear Simulation tool has been introduced in this paper. It contained using VC++ exploitation platform and MFC frame. Firstly the file of flight data was processed by XML configuration document. And then the Data were read by opening documents in FlightGear simulation to recreation and the same time the instrument would receive the data from FlightGear simulation with network in order to synchronously display flight data. The experiment proves that the system has good simulation effectiveness and real-time performance.

Fuzzy Comprehensive Evaluation on Regional Development Level of General Aviation in China

t can provide the basis on drafting the regional general aviation development policy for government departments and civil aviation regulatory agencies by analyzing the regional general aviation development level scientifically. The regional development level of general aviation in 2009 is chosen as the research object. According to the seven regional administration of Civil Aviation Administration of China (North China, Northeast, East China, Central and southern, Southwest, Northwest, Xinjiang), the region of general aviation is divided into seven parts. The evaluation system of operational scale and operational efficiency of regional general aviation is established. The weights of the seven indicators in the evaluation system are determined by Analytic Hierarchy Process (AHP) and the development level of seven region of general aviation is evaluated by Fuzzy Comprehensive Evaluation Method. Finally, the development levels of seven region of general aviation are settled by the values of Fuzzy Comprehensive Evaluation. The relative good and weak regions of general aviation development are identified.