Wilfred Oliver
Director of Space Consulting Services

BSc (Hons) Mechanical Engineering
C.Eng, F.I.Mech.E

Satellite platform sub-system and launch vehicle specialist

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Wilfred Oliver has over 34 years experience in the space business including 30 years combined consulting and as customer resident monitoring satellite construction.

Following completion of a six year engineering apprenticeship and his graduation in Mechanical Engineering, Wilfred started working in the Aerospace business in 1976.

In 1982 he joined British Aerospace – Space and Communications Division in Stevenage specialising in the design of light weight flight structures in particular Carbon Fibre composite designs for antennas structures, launch vehicle structures and space mechanisms including deployable structures. As a manager in the Design Stress Office Wilfred was very influential in the design, development and qualification of the then new Ariane4 launch vehicle payload carrier structure SPELDA which at the time was the largest CFRP flight structure in Europe.

In 1989 Wilfred joined Inmarsat where as customer resident in the UK, USA and France he was part of the Inmarsat team monitoring the design, construction and test of the Inmarsat2, Inmarsat3 and later Inmarsat4 satellite procurement programs. In total the team successfully delivered  12 Inmarsat spacecraft including completing successful launch campaigns, LEOP and IOT for all 12 spacecraft.  While working on the Inmarsat4 program as Mechanical Systems and Launch Vehicle Engineering Manager Wilfred was responsible for monitoring and participation in the development and qualification of several new space sub-systems including a large 9m unfurlable reflector, loop heat pipes and deployable plasma propulsion thruster unit. As part of the Inmarsat-ICO feasibility team Wilfred helped define and launch ‘ICO’ as a new satellite constellation business venture.

Appointed Head of Mechanical Engineering and Senior Research Fellow at University College London’s Mullard Space Science Laboratory (MSSL) Wilfred was responsible for the design, construction and test of a number of key equipments and sub-systems for space science programs. Leading a multi-discipline team at MSSL he was successful in delivering on time and to specification the 80 Kg Optical Monitor (optical space telescope) for the ESA XMM-Newton spacecraft as well as a 3 m long CFRP UV space telescope forming part of the EIS space instrument(Extreme-Ultraviolet Imaging Spectrometer) for the NASA/UK/Japanese Hinode/Solar-B spacecraft as well as numerous other instruments for ESA missions such as Cluster2 and Herschel-Planck. Wilfred was also part Professor Colin Pillinger’s team working on the design, manufacture and test of the optical Camera Package and Payload Adjustable Workbench for the Beagle2 Mars lander.

In 2006 Wilfred Joined Telesat in Canada as Senior Consulting Engineer responsible for satellite platform sub-systems and launch vehicles where he participated in a large number of space consulting programs for international clients including technical risk assessment in support to the space underwriting team at BRIT Insurance in London.

After leaving Telesat in 2009 Wilfred formed Global Space Consulting Ltd.

Wilfred is a Chartered Engineer and a Fellow of the Institution of Mechanical Engineers.


Oliver, W., Thomas, N.G., Development of the Ariane 4 SPELDA, Composite Design for Space Applications, ESA SP-243, ESTEC Workshop 15-18 October 1985

Oliver, W., Thomas, N.G., SPELDA – The Ariane 4 dual satellite support structure, Aerospace Structural Developments, I.Mech.E AeroTech87 conference

In 1976 Wilfred was awarded a prize by The Institution of Mechanical Engineers in recognition of his final year degree thesis and achievements in the analytical modelling and experimental validation of transient heat transfer involving dynamic fluid flow in plate heat exchangers.

Trevor JonesTrevor Jones
Satellite Communications Systems Analyst

BSc (Hons) Physics

Communications payload and broadband optical/wireless systems analyst

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+35 years experience in the space business including 20 years combined consulting and as customer resident monitoring satellite payload construction, assembly and test.

Following his graduation in 1977 with honours in Physics, Trevor joined Marconi Space and Defence Systems in Portsmouth, UK. As a senior systems engineer at Marconi Trevor’s responsibilities included analysing MARECS (Inmarsat I) communication payload equipment for nuclear radiation dosages, writing and updating the MARECS payload operations requirements handbook, and Passive Intermodulation (PIM) testing on MARECS payloads with multipaction tests on critical equipment. As payload systems analyst for MARECS B and B2, his tasks included performance analysis at payload level, devising diagnostic tests for payload anomalies, writing payload test reports, and support for the delivery and buy-off of the MARECS satellite payloads.

In 1985 Trevor joined British Aerospace, Stevenage, UK and became the BAe customer resident payload engineer in Hughes Aircraft Corporation, Los Angeles to monitor progress on the design, construction and test of the Inmarsat 2 payload.

From 1987-1997 Trevor was appointed as RF Systems Analyst at the European Space Agency (ESTEC), Noordwijk, Netherlands where he worked primarily on communications systems engineering for both a number in house projects as well as an RF consultant to a number of external clients.
In 1997 Trevor joined Telesat as a Senior Payload Systems Specialist with responsibilities for both internal satellite programs as well as a number external space consulting programs for international clients.

Since 2000 Trevor has been consulting full-time working with a number of clients on a range of GEO and LEO satellite projects for communications, navigation or earth observation missions. Tasks undertaken have included:-
• Satellite payload monitoring.
• Work on both High Throughput (HTS) GEO and LEO constellations as well as low data rate (LDRS) LEO satellite. LEO constellation coverage analysis, orbital parameters, antenna design and allocated bandwidth.
• Large aeronautical mobile system, evaluated impact of complex frequency coordination constraints related to specific GEO arc locations.
• Development of detailed link budgets to determine antenna performance including self-interference effects.
• Development of payload spot beam grid, frequency and polarisation reuse plans to provide coverage of specified service areas and maximize overall system capacity.
• Derive payload capability, design and sizing to be used as the basis for customer to develop business plan and prepare potential commercial bid.
• Antenna sizing and trade-off including defined payload RF front design (phased array).
• Payload capacity calculations.
• Writing the payload specifications, writing RFPs and reviewing proposals including trade offs
• Technical design of payload units, including flexible channelizer and frequency.
• Low data rate satellite (LDRS) system level trade-off studies for a LEO constellation of satellites operating in UHF frequency band. Evaluated different access methods (Aloha, slotted Aloha, DAMA, etc) and potential impacts on throughput; evaluated link budgets/physical layer options, ground terminal – satellite antenna performance trade-offs; bus sizing.
• Performed parametric study evaluating different LEO Earth Observation (EO) terminal architectures. Performed detailed link budget analysis quantifying supporting data rates as a function of satellite terminal performance.

From 2016 Trevor joined the Global Space Consulting team.


Satellite Payload Configurations for European ISDN Services, T.Jones, M. Yarwood, G. Pennoni. ECSC-1 First European Conference on Satellite Communications (Munich Nov. 1989) pp 197-207
Repeater and Antenna Design for a European On-board Processing Satellite System, L.Bella, S.Badessi, T.Jones ICDSC-9 Copenhagen May 1992
European and USA patents (1997): Reconfigurable Transmit Antenna for Shaped Contour Coverage; European patent (2010); Multibeam communication system and method.

Roger Jayes
Satellite Communications Payload Engineer

BSc (Hons) Electronics

Satellite hardware development, production & verification, with particular strengths in payload testing both on-ground & in-orbit.

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+35 years experience in space engineering including 15 years combined consulting and as customer resident monitoring satellite payload construction and test.

Following completion of a four year Engineering Apprenticeship with Marconi Communications Systems Ltd in Chelmsford and gradating with a BSc degree in Electronics Roger joined British Aerospace, Stevenage UK in 1980 as an Assembly, Integration and Test engineer. During this time Roger worked on AOCS and power subsystems of the MARECS series of spacecraft and later undertaking communications payload subsystem testing .

From 1985 to 1988 Roger joined The Royal Signals Research Establishment, Defford, UK as a Development and Test Officer responsible for a small team developing and implementing automated test methods for the In Orbit Testing of the SKYNET 4 and NATO 4 series of spacecraft.

From 1988 to 2003 Roger joined Astrium (now Airbus) where he carried out a number of roles, including:

  • Payload IOT engineer for Hellas-Sat Project
  • Payload engineer for in-orbit activities at L’Herme, Toulouse.
  • Principle Engineer managing the design and implementation of ground equipment for high speed telemetry and telecommand links to a Digital Signal Processor onboard a new generation of spacecraft payloads.
  • Technical support on RF communications link for Beagle2 Mars lander including defining the structure of science packet data transmission.
  • Based in Toulouse, he was responsible for customer interface dealing with technical issues relating to in service satellite payloads including customer training and support for In Orbit Test activities.
  • Based in Singapore/Taiwan, he worked as part of a team providing technical support to Customer including in-orbit testing and customer training.
  • Design engineer for first satellite payload test equipment for the Orion spacecraft project
  • Software design for and test of automated filter tuning and production test methods
  • Specifying ground and IOT test requirements for company bids on ASTRA, TURKSAT, ORION
  • and Data Relay Satellite (DRS).
  • Responsible for installing and operating fly-away transportable ground terminals for fixed and mobile TV broadcasts and newsgathering.
  • Conducted multiple satellite IOT tests.
  • Volunteered for civilian duty installing, operating and maintaining TV satellite uplink in Saudi Arabia during the Gulf War and received The Gulf Medal.

From 2003 to 2015 Roger joined Telesat providing field office support for Telesat internal programs (Anik F1R, F3 and Nimiq 4) as well as payload ground test monitoring to customers on a consulting basis including Arabsat 4A, 4B and 4AR, Palapa D, Nilesat 201, Telkom 3, Yahsat 1A, Yahsat 1B and Arabsat 6B programmes. Roger also provided engineering support and test data analysis to customers during payload In Orbit Test on Arabsat 4B and 4AR, Turksat 3A, Nilesat 201, ETRI, Yahsat 1A, Yahsat 1B, Turksat 4A and Turksat 4B at the customer IOT ground stations.

From 2015 Roger joined the Global Space Consulting team.