Service Module structure

11 IAN. 2002 2021

The Service Module (SVM) structure comprises the following:

Propulsion module ring

A machined aluminium alloy plate, used to support the four propellant tanks and to interface with both the PLM and the SVM central structure.

Central structure

Made of a Carbon Fibre Reinforced Plastic (CFRP) sandwich construction cone. The cone features bonded aluminium alloy upper and lower rings.

Box structure

Around the CFRP cone are upper and lower floors and external walls, forming a rectangle with shear walls that link the central cone to the external rectangular box structure. All these elements are made of aluminium alloy sandwich panels.

Battery compartment

This includes the assembly of the battery support plate and five equi-spaced radial stiffeners.

Flat Solar Array Drive Mechanism (SADM) mounting structure

A set of local support structures (brackets and panels) for Attitude and Orbit Control Subsystem (AOCS) sensors and actuators, harness and antennas.

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11 IAN. 2002

Service Module

The Service Module (SVM) interfaces with the launch vehicle and the Payload Module (PLM).It provides the following service functions:attitude and orbit control, including propulsionelectrical power generationdistribution of commandstelemetry generation, telecommand processing and various application functions

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11 IAN. 2002

Service Module configuration

The Service Module (SVM) is a 'box' shaped structure that interfaces with both the launch vehicle and the Payload module. The SVM design is based on the Envisat/SPOT 5.

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11 IAN. 2002