David Dunham Email & Phone Number

Continuation of responsibilities on Trent 1000 Package B, C1 and TEN. This includes an involvement in engine and rig tests for Package C1 and ownership of certification experiments in the TEN engine development programme.Secondment to lean-burn team. I was the test owner of an altitude operability rig campaign (TRL5) conducted at Institut für Luftfahrtantriebe (ILA) Stuttgart. I was responsible for defining the overall strategy in terms of test unit build, instrumentation and schedule. In the lead-up to the test I liaised extensively with ILA personnel to ensure the successful completion of all preparatory tasks. I was the lead tester throughout the campaign and proactively supported the resolution of test bed issues over a three week period. All testing was completed on time and on budget and contributed towards a significant milestone in lean-burn development.Secondment to Research and Technology (R&T). I was the test owner and lead tester of a full annular rig test (TRL5) demonstrating novel cooling technology. The majority of design work was undertaken by a remote team and I provided an interface with the Derby site to ensure the successful completion of all preparatory tasks. This included producing all the instrumentation schemes and securing the resource for them to be implemented. In addition to my testing responsibilities I also undertook 1D network modelling of the novel combustor architecture to support the design activities.Member of global thermoacoustic strategy group. I play an active role in overseeing and selecting areas of thermoacoustic research conducted at UK University Technology Centres (UTCs). This includes presenting proposals to senior management, allocating funding and issuing formal statements of work (SoW).Supervision of Engineering graduates including defining SMART objectives and conducting final PDRs.

Member of lean-burn aerothermal team responsible for development testing of fuel spray nozzles (FSNs) for relight and emissions.Member of Trent XWB aerothermal team responsible for delivery of full annular combustion rig test (TRL5). As part of this, I developed a suite of tools using MATLAB and macro-based Excel workbooks to improve post-processing of results.UK point of contact for Trent 1000 Package B and C1 responsible for key aerothermal attributes. In this role I provided an interface with various departments such as Performance, Development and Turbines. For Package B I worked as part of an integrated project team (IPT) to deliver a package of combustor liner modifications for Boeing. For Package C1 I was responsible for raising, analysing and reporting key experiments for certification during the engine development programme (EDP). I also acted as an interface and advisor to colleagues in the United States on Trent 1000 TEN development.Emissions certification testing. I have delivered and supervised successful emissions compliance tests for Trent 700 and Trent 1000 engine types in accordance with CS-E 1020. This includes liaising with certifying authorities (EASA) to define compliance strategies, conducting necessary testing (UK and Spain), presenting outcomes to the chief engineer and authoring formal documentation.Department representative for a company-wide project to relocate a portfolio of experimental facilities. I attended weekly project meetings along with representatives from other departments to provide and consolidate requirements for aspects such as: floor area for test rigs, control rooms, plant equipment, workshops, office and storage space together with capital equipment costs and IT requirements.Supervision of Engineering graduates including defining SMART objectives and conducting final PDRs.

Derby, United Kingdom

This research formed part of a European work package (NEWAC WP1.4) to investigate the impact of volcanic ash (VA) deposition rates on gas turbine performance. I was responsible for a package of work (WP1.4.3) which sought to simulate the trajectories of VA through a realistic combustion system and to predict deposition rates on hot components via a ‘sticking’ model.I made extensive use of ICEM and Fluent CFD to perform a high-fidelity simulation of the combustion system from pre-diffuser exit to downstream of the high-pressure nozzle guide vanes (HPNGVs). The trajectory of ash particles were tracked using a Lagrangian scheme and the likelihood of deposition on hot components was determined via the sticking model which I developed as part of the work package and implemented as a User Defined Function (UDF).I presented the outcome of my research at the Institute of Physics (IOP) in 2011: ‘Modelling the Effects of Volcanic Ash on High Pressure Combustion Systems’. It was also presented in an overview of NEWAC WP1.4 at the 2011 ISABE conference (ISABE-2011-1418).

In parallel to my Ph.D. studies, I undertook a 7 month project to design an intermediate Mach number test facility (Mn~0.5) to investigate the thermal signature of multiple jets in a confined cross-flow. This included: centrifugal fan sizing, test section scaling, consideration of thermodynamic effects, design of an interlock safety system and implementation of flow measurement instrumentation. Many of these activities required me to liaise with various sub-contractors and were all delivered within project timescales and budgets. During the preliminary design stage I utilised Fluent CFD to ensure that test section scaling was correctly implemented.

Doctor Of Philosophy (Ph.D.), Unsteady Fluid Mechanics Of Annular Swirling Shear Layers

My research was funded via an EPSRC industrial CASE award (Rolls-Royce). This was driven by the requirement within the gas turbine.

Bachelor’S Degree, Aeronautical Engineering, 2:1

Final year project: ‘Correcting for Sub-Grid Filtering Effects in Particle Image Velocimetry (PIV) Data’. I utilised MATLAB to generate.