Summary on the Situation Awareness Requirement Analysis Method of Civil Aircraft Cockpit for the Flight Crew

Author(s):  
Xianchao Ma ◽  
Xianxue Li ◽  
Tingying Song
Author(s):  
Natalya S. Ulanova

The last decade of the 20th century saw another boom in the supply of Soviet-made civil aircraft to the countries of Africa. Hundreds of highly qualified aviation specialists from all post-Soviet states were involved in its operation and maintenance. Market relations, new for many of them, the aggressive way of doing business on the part of entrepreneurs, as well as the complicated military and political situation in some regions, have led to the formation of a certain type of business and personal relationships. Lessons learned over the thirty years of work in special economic and socio-cultural conditions are still actual. Nevertheless, this aspect of Russia-Africa relations remains one of the least studied. Analysis of the narratives of the eyewitnesses - pilots, flight engineers, translators - is still the only way to know more about some hallmarks of the African aviation market, which still has a significant shadow segment. For this study the narratives of a Russian flight engineer who has worked as a flight crew member in various African countries for more than ten years were collected. The recollections presented relate to the first organized trip to South Africa and Mozambique in 1992, and to the later period of private contract work in Angola and Rwanda, and are interesting because they trace the formation of psychological and ethnocultural aspects of business and personal contacts with the employers, local residents and co-workers.


Author(s):  
Yunwen Feng ◽  
Cheng Lu ◽  
Xiaofeng Xue ◽  
Yuchang Liu

A multi-echelon inventory allocation technique with maintenance ratio for civil aircraft spare parts was proposed in this paper. Multi-echelon inventory allocation model was established, which integrates maintenance rate into METRIC (Multi-echelon technique for recoverable item control) model, and then marginal analysis method was applied to solve this model and accomplish multi-echelon inventory allocation of spare parts. Firstly, the theory of multi-echelon inventory allocation model with maintenance ratio was elaborated, and the mathematical model was established with the fleet availability as the optimization objective, the cost and the safeguard probability as the constraints. Secondly, the procedure of solving multi-echelon inventory allocation model considering the influence of maintenance ratio is discussed based on the marginal analysis method. Thirdly, landing gear LRU (Line repairable units) of a typical civil aircraft were selected as the research object, multi-echelon inventory allocation was investigated by considering maintenance ratio. The analysis results show that the minimum safeguard cost and fleet availability are respectively 2759833 dollars and 0.9806, and the number of LRU of multi echelon inventory allocation are obtained under the condition of satisfying the constrained optimization. The feasibility and effectiveness of the developed method are verified by comparing the traditional analysis method. This paper provides guidance for the accurate allocation of multi echelon inventory optimization for maintenance resources on the premise of reasonable cost reduction.


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