Over 20 years experience in applied FE analysis (mainly MSC-NASTRAN) in Spacecraft structures and sub-systems. Principal expertise focused in structural dynamics spanning frequency response, random vibration, SRS based methods, transient and non-linear static and dynamic analysis.
My personal perception is as a practical engineer with experience of engineering hardware, design, specification and testing who is able to support practical experience in design and manufacture with an analytical capability.
In my current role, as Snr Specialist, I am technically responsible for a group of Spacecraft Prime mechanical analysts and have recently been promoted to the EADS technical experts roster (EADS 2%) having been Systems Team Leader for over 8 years. I take pride from an ability to work with other people and see myself as a team member / player who can when necessary work on his own initiative to meet business, team or personal goals.
In addition to group technical responsibility, I have focused on a number of business R&D activities which are detailed below.
1986- MSC Computer Dynamic Analysis
1982-1986: BSc (Commendation) –Mech. Eng. City of Birmingham Polytechnic. Study by day release
1977-1982 TEC Cert in Mech. & Prod. Eng. Cannock Chase Technical College
1977-1982 Engineering Apprenticeship
7 ‘O’ levels
1999 –current EADS Astrium, Stevenage,Herts
2008 –current. Snr Specialist Spacecraft Prime Mechanical Analysis & Support to Test
Promoted to EADS expert roster. Business unit technical expert.
2004-current R&D focal activities:
2008 Next generation antenna pointing mechanisms.
Trouble shoot FE analysis work for random vibration sizing.
Establish FE modelling method for 3-stage gearbox and 240:1 in series epi-cyclic gearbox.
Establish methodology for thermo-elastic de-point resulting from thermal gradients and introduction of method to cover kinematic de-point resulting from gear centre change under thermal environment.
2005 ESA study support –electro-dynamic shock testing.
Study through analysis and testing showing limitations of SRS shock based techniques and possible over test of wavelet generated shock tests versus impulsive shock.
2005 Mars Rover
Modal analysis of Mars rover system – primary composite structure and locomotion kinematics in FE model.
2004 Lisa Pathfinder spacecraft mechanical systems specification definition:
Definition of zonal random vibration requirements for payload and equipments through historical acoustic test data obtained from Spacecraft testing.
Simulation of acoustics through random vibration pressure analysis in FE.
Zonal shock specification for payloads and equipments.
Mechanical Lead Engineer – Metop FM1,FM2,FM3 spacecraft.
Test conductor for sine and acoustic testing of PFM and FM2 –4.3 tonne satellites.
Responsible for mechanical analysis activities in preparation for Spacecraft dynamic tests.
Soyuz & Ariane 5 Spacecraft / Launcher coupled loads analysis assessments.
Mechanical analysis responsible for customer (ESA) Qualification and Flight Acceptance Reviews.
Detail justification of modal damping assumptions resulting from electro-dynamic shaker tests at two (2) different test facilities.
Support to qualification of Metop Solar Arrays.
Astrium Stress Analysis (standards panel) representative.
2000-2008 Systems Team Leader
Section leader for Spacecraft Prime level systems analysis and mechanisms stress analysis.
Group technical authority and manpower management.
Sub-contractor and recruitment responsible into group.
1999-2000 Principal Engineer
Metop fixed and deployable antennas. Stress signatory --FE static and dynamic analysis.
Composite tube ply lay-up optimisation with respect to launch and thermo-elastic constraints.
Design of new concept hold-down release mechanisms for deployable antennas.
Dynamic test and test assessment responsible and justification of FE model validation (dynamic correlation).
Composite verification tests on Metop spacecraft --primary deployment mechanism booms. Analysis and evaluation of laminate levels tests. Assessment of laminate stress allowables versus assumptions used in dimensioning.
Senior Member of Tech. Staff.
Responsible for development and design of ‘high’ volume Spacecraft antennas and procurement of specialised duplex bearing system and specification.
Mechanical concept design definition.
1990-1998 BAe Space Systems (Matra Marconi Space), Filton.
Senior stress Engineer: Metop Spacecraft.
FE composite ply lay-up optimisation for primary structure adhesive bonded ring joints considering launch loads and thermo-elastic constraints.
Senior Stress Engineer:
Lead Stress Engineer: GOMOS instrument optical pointing instrument. Detail stressing and stress signatory for optical pointing assembly. Specification of stiffness and inertial coupling control of design to meet high inertial stability requirements <4 m rads optical dynamic jitter resulting from 6 dof base sine inputs. Random vibration simulation of acoustic loading, sine and base random vibration input (equipment sizing and stressing with respect to random vibration). Transient shock analysis. Thermo-elastic analysis and control of launch and on-station thermal distortion loads on Beryllium optical surface. Vibration test conductor for sine, random and shock tests. Correlation of FE model with electro-dynamic shaker test measurements.
Lead Stress Engineer ENVISAT I Solar array primary deployment mechanism. Detail stressing /drawing stress signatory supported by classical hand methods and FE. Random vibration analysis, freq. response analysis, transient shock analysis, thermo-elastic analysis. Structural specification development for composite tube manufacture and fatigue requirements for launch, Spacecraft manoeuvre loads and cyclic thermal stresses. Test conductor /responsible for equipment random/sine vibration and shock testing. Correlation of FE model with electro-dynamic shaker test measurements.
Prime system analysis : ENVISAT I – static stiffness sensitivity studies—NASTRAN
Theoretical and process development for reduced modal model production using fixed interface Craig-Bampton reduction process for reduced Spacecraft models produced for launch vehicle coupled analyses.
1987-1990 Thorn-EMI Naval Systems, Rugeley,Staffs. – Mechanical Engineer design and analysis of data distribution consoles and Naval de-gaussing systems. PAFEC FE and Integraph Microstation application to design.
1986-1987 MSC University of Aston
1977-1986: Mechanical Tools & Gauges –engineering apprenticeship in hydraulic component manufacture and design of hydraulic rams.
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