Institution
Rolls-Royce Holdings
Company•Derby, United Kingdom•
About: Rolls-Royce Holdings is a company organization based out in Derby, United Kingdom. It is known for research contribution in the topics: Turbine & Gas compressor. The organization has 4027 authors who have published 6305 publications receiving 80517 citations. The organization is also known as: Rolls-Royce Holdings plc.
Topics: Turbine, Gas compressor, Rotor (electric), Turbine blade, Casing
Papers published on a yearly basis
Papers
More filters
•
02 Feb 1993TL;DR: In this paper, a gas turbine engine is mounted from a pylon and a plate is attached to the underside of the pylon, the ends of which extend radially inwards towards the fan casing.
Abstract: A gas turbine engine is mounted from a pylon. The gas turbine engine has an annular fan casing which is provided with a composite containment ring. A plate is attached to the underside of the pylon, the ends of which extend radially inwards towards the fan casing. The plate acts to direct the containment ring, as it distorts under the impact of a blade, away from the pylon. The plate reduces the amount of interaction between the containment ring and the pylon so minimising any damage to the pylon and the associated aircraft structure.
26 citations
••
TL;DR: In this article, a new method was proposed to capture damage initiation and structural degradation during a fatigue test, by exploiting resonance vibrations and monitoring dynamic parameters, including the phase angle between excitation and response, which suddenly changes as soon as the overall stiffness changes as a consequence of damage.
26 citations
••
TL;DR: An improved approach which aims to minimize position and orientation error with a dimensional synthesis of robotic manipulators with limited mobility with a novel methodology that combines a path planning algorithm and dimensional synthesis has been proposed.
Abstract: In this article, an optimization method is proposed for the dimensional synthesis of robotic manipulators with limited mobility, i.e. with less than 6 degrees-of-freedom (“DoF”), with a prescribed set of tasks in a constrained environment. Since these manipulators cannot achieve full 6-DoF mobility, they are able to follow only certain paths with prescribed position and orientation in space. While the most common approach to this problem employs pure path-planning algorithms, operations in narrow and complex environments might require changes to the robot design too. For this reason, this paper presents an improved approach which aims to minimize position and orientation error with a dimensional synthesis. First, a novel methodology that combines a path planning algorithm and dimensional synthesis has been proposed in order to optimize both robot geometry and pose for a given set of points. Then, the method is validated with a 4-DoF robot for high-precision laser operations in aeroengines as a case study. The example shows that the proposed procedure provides a stable algorithm with a high convergence rate and a short time to solution for robots with limited mobility in highly constrained scenarios.
26 citations
••
TL;DR: In this paper, a low-order model applying the immersed boundary method on smeared geometry is presented, which is able to represent the effect of turbomachinery within a complex system.
Abstract: This paper presents a low-order model applying the immersed boundary method on smeared geometry. It is thus able to represent the effect of turbomachinery within a complex system. Assessment of thi...
26 citations
••
25 Jun 2010-Materials Science and Engineering A-structural Materials Properties Microstructure and Processing
TL;DR: In this paper, the authors address the issue of fatigue cracks in titanium alloys and how high temperature interactions may affect stress concentrations which are often the source of potentially catastrophic fatigue cracks.
Abstract: Increased efficiency within the aero engine can be achieved through higher operating temperatures. In order to meet this requirement designers seek either to implement new alloys or show that existing alloys are capable of operating under more extreme conditions. At higher temperatures fatigue is no longer the sole damage mechanism and contributions from creep and environmental interactions must also be considered. This paper seeks to address some of these issues within titanium alloys, and in particular how these high temperature interactions may affect stress concentrations which are often the source of potentially catastrophic fatigue cracks. The requirement to consider both the crack initiation and propagation phase under these conditions is addressed and a modelling capability is presented which shows the ability to predict some of these effects at high temperature.
26 citations
Authors
Showing all 4029 results
Name | H-index | Papers | Citations |
---|---|---|---|
David A. Jackson | 136 | 1095 | 68352 |
David Harvey | 115 | 738 | 94678 |
David J. Williams | 107 | 2060 | 62440 |
Michael Walsh | 102 | 963 | 42231 |
Zi-Qiang Zhu | 89 | 1049 | 33963 |
H. K. D. H. Bhadeshia | 77 | 476 | 27588 |
Nigel P. Brandon | 71 | 412 | 18511 |
Sanjib Kumar Panda | 64 | 633 | 13808 |
Fabrizio Scarpa | 63 | 467 | 13559 |
Robert J.K. Wood | 56 | 314 | 10439 |
Howard P. Hodson | 50 | 226 | 7118 |
Martin Rose | 49 | 241 | 10299 |
Andy J. Keane | 46 | 301 | 13753 |
Stephen J. Finney | 45 | 263 | 6821 |
D.M. Vilathgamuwa | 45 | 212 | 7827 |