Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 25 for “"Rolls-Royce"”.
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An exploration of supply chain management practices in the aerospace industry and in Rolls-Royce
… on the aerospace industry and by focusing on Rolls-Royce through a case study. The objective of the thesis is to conduct an exploratory study of the best practices in supply chain management in the aircraft engine manufacturing industry, and how these practices impact the competitive …
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An analysis of the current strength of the academic relationship with the aerospace industry
… to R&D; and engineering personnel at the Rolls-Royce facility in Indianapolis, Indiana. Rolls-Royce was chosen as the focal point for this study due to their large employment population, R&D; capabilities, and the breadth of their manufacturing abilities. The data obtained from the survey …
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Prediction of transitional boundary layer properties for CFD software in engineering flows
… and also the varying pressure gradient Rolls Royce T3C flows. The method gives good prediction of skin friction and transition length when the start of transition was in zero and favourable pressure gradient flows, but the transition length was always under predicted when the start of …
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Computational study of hub corner stall in an axial compressor rotor
… of the Deverson rotor were made available by Rolls-Royce for comparison with the 3-D calculation results. The q-L turbulence model predicted the existence of the hub comer stall, but under predicted the size of the corner stall. It failed to predict the radial migration of the associated loss …
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A commercial and militarized 737 system and subsystem level analysis: a systems engineering modeling and simulation approach
… of the two systems will be modeled within the Rolls-Royce PowerFlow toolset. The PowerFlow toolset gives a high fidelity simulation of internal performance of aircraft subsystems. Using this tool, it will be possible to determine power loads required for the various subsystems. The PowerFlow …
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Development of a Novel Probe for Engine Ingestion Sampling in Parallel With Initial Developments of a High-speed Particle-laden Jet
… particles after the first compressor stage of a Rolls-Royce Allison Model 250 turboshaft engine. The engine was not used in this investigation; rather, a rig that creates a particle-laden jet was developed in order to determine probe sampling sensitivity with respect to varying angles of attack …
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An image processing technique for erosion analysis on compressor blade geometry
… detection. These methods are tested on a Rolls-Royce M250-C20B turboshaft engine, in which full-scale engine testing is performed to study particle ingestion effects on performance. The results showed a <1% uncertainty for blade geometry measurements, with the total chord also having a 1% …
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The development of a hybrid simulation modelling approach based on agents and discrete-event modelling
… approach (which is currently the subject of a Rolls-Royce patent application) which draws on the strengths of both agent and discrete-event paradigms. In order to combine agent roles and discrete event processes, a new model was implemented using a three-layered architecture. A full fleet …
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Development and validation of a combustion model for a fuel cell off-gas burner
… coupled to a gas turbine has been developed by Rolls-Royce Fuel Cell Systems. As part of the cycle, a fraction of the unreacted fuel (the off-gas) and oxidizer streams is reacted in a burner, which is the main source of pollutant formation. In this thesis a computational model of the burner has …
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Modelización de redes virtuales de fabricación global en la industria aeronáutica
… a uno de los actores más relevantes de la red, Rolls Royce, lo que permitirá conocer en detalle su posicionamiento estratégico a la largo de los últimos años y ver cómo va evolucionando hacia una mayor “virtualización” al establecer, cada vez más, colaboraciones externas en la fabricación de sus …
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A study of the role of friction in superplastic blow forming of alloy sheet
… process contributes to a major problem for Rolls Royce Plc, which is strongly associated with the poor level of current understanding of friction behaviour in the SPF process. It is thus the aim of this research to investigate the superplastic blow forming process and the role of friction, …
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Linear and Nonlinear Modelling of Gas Turbine Engines
… between the fuel flow and shaft speeds of a Rolls Royce aircraft gas turbine. It is motivated by the desire to exploit recent advances in modelling linear and nonlinear systems and the need to investigate the suitability of various model representations in nonlinear gas turbine …
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Application of the systems approach to defining major projects for successful implementation
… Thames Water's London Water Ring Main, and the Rolls Royce RB 211 Aero-engine. The first case study represents a cancelled project, the second a highly successful project, and the third a project that experienced extreme problems but resulted in a highly successful product. Finally, in Chapter 9 …
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Design and development of a rectangular supersonic wind tunnel facility for the study of shock/boundary layer interactions
… by NASA, Gulfstream Aerospace Corporation, Rolls-Royce, and the University of Illinois. The low-boom supersonic inlet project itself was part of a new supersonic business jet design. The primary goal of the low-boom supersonic inlet group was to reduce the sonic boom of the new jet by …
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How to develop suppliers within an Extended Enterprise towards a Digital Enterprise
… 3-year longitudinal research programme studies Rolls-Royce and a tiered cross-section of 24 of its suppliers, in the aerospace sector, as they confront and embark upon the journey towards a digital enterprise. Literature is synthesised to create a 9 step process, with 28 implementation …
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Design and application of advanced control methods to gas turbines and networked systems
… application of modern control techniques to a Rolls Royce aircraft gas turbine engine and networked systems. It is motivated by the need to fully exploit recent advances in control engineering and investigate the suitability of various control methods to gas turbine engines and networked …
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Grain boundaries and creep deformation mechanisms in a high performance nickel-based superalloy
… the description of creep deformation in the new Rolls-Royce Alloy 12-1 polycrystalline nickel-based superalloy for disc application in gas turbine engines. In particular, this study aims to progress the understanding of the effect of grain boundaries in relation to the content of minor additions …
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Near infrared tunable diode laser spectroscopy for aero engine related applications
… of high temperature water vapour on the Rolls-Royce Environmentally Friendly Engine demonstrator established the viability of temperature and concentration measurements up to 850K.
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Data-Driven Modeling of Tracked Order Vibration in Turbofan Engine
… frameworks. This work was supported by the Rolls-Royce Fellowship, sponsored by the College of Engineering, Virginia Tech.
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Advances in tunable diode laser spectroscopy for aero engine research
… field campaigns were conducted at the Rolls-Royce test facility at East Kilbride, yielding concentration and temperature values having good correlation to the engine operating conditions such as the throttle and core temperature.Multi-channel tomographic measurements were conducted on …
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