Friday, February 28, 2020

Supply Chain Management in Saudia Airlines Research Paper

Supply Chain Management in Saudia Airlines - Research Paper Example The low cost airlines have impacted the local sales of the leading airlines by a large margin. This is so because customers while traveling locally may prefer a low cost airline as the distance is less and they may not require any extra facilities or entertainment. However, these new entrants still lag behind in the development of an effective Supply Chain Management (SCM) system which is the source of competitive edge for the leading players of the industry. In the last few years, the organization structures of many airline companies have undergone drastic transformations to incorporate the challenges encountered during the tough economic times that have been prevailing since 2008. Since the aviation industry has become dynamic and competitive, every player in the market has to ensure that it meets the demands of its target market effectively (Bolstorff and Robert, 40). Innovation, design, quality of products and services are important areas of consideration for all organizations. In the airline industry, only those companies can survive that have a competitive edge in their SCM process and those which will ensure that they are providing premium quality services at competitive rates to their customers. Supply chain management strategies need to be effective and timely as any delays at any point of the supply chain would affect the performance and the quality level of the airlines to a large extent. Emirates Airline is among those companies that entered the market with the aim of becoming the leader in the aviation industry worldwide. It is among the top-ranked airlines available in the market which has been providing an excellent range of services to its customers ranging from leisure to business traveling packages. Emirates airlines are considered as one of the best airlines of the world and the entire management strives towards maintaining this image. Emirates Airline was the pioneer in introducing the

Wednesday, February 12, 2020

Aircraft electrical power generation and distribution Coursework - 1

Aircraft electrical power generation and distribution - Coursework Example An over temperature switch is installed in the generator. The switch contacts close when the stator windings reach a temperature of 210 degrees C and automatically reset when the temperature returns to a safe level. The output frequency of the generator is 400 Hz and is controlled by the GCU. The PMG supplies electrical power to generator control unit (GCU). This power is used to control the generator circuit. The PMG has 3 phase windings in the drive part of the IDG. A voltage regulator supplies DC power to the stator windings of the exciter. In the rotating rotor a 3 phase voltage is generated and then rectified to DC by diodes. The rotating DC field, thus obtained, is used to control the 3 phase main generator; the output is supplied to the generator line contactor (GLC) and from there to the generator control unit. This output from the generator is used to control the voltage regulator, which now makes sure that the main output is 115 Â ± 2.5 V. the frequency controller uses the PMG voltage and makes sure that the generator operates at 12000 Â ± 120 rpm to obtain a frequency of 400 Â ± 4Hz. The GCR is controlled by a logic circuit and is energized when the frequency is above 365 Â ± 2.5 Hz. When energized, voltage regulation starts. When voltage and frequency are correct the PRR is energized and the generator line contactor is energized through the action of the AC bus transfer system. When in operation, the GCU examines and continuously the generator system. To achieve this several protective functions are built into the GCU including; The drive ensures that the generator only operates at a given rpm, irrespective of the engine rpm and generator load. The brushless AC generator produces the desired power. When the input shaft rpm increases or decreases the output frequency varies respectively. This variation is detected by the GCU. The GCU relays an electrical signal to a