PAGE CONTENTS
Objectives
The main objective of the program is design, manufacturing and testing an Enhanced Dual FSA (EDF) assembly competitive in performances but also in cost and planning, destined to telecommunication commercial purposes.
The concept of the new structure should accommodate heavier feed chain assemblies up to 30 Kg and a wide range of sub reflectors in position and aperture diameter without modifications of the structure (same manufacturing documentation).
The standardization, industrialization and capability to accommodate heavier feeder and larger sub-reflectors should be reached at the same time as others important technical objectives:
- Low mass at relatively high frequency: Mass ≤16 kg ;Freq. ³ 60 Hz
- To improve the thermo-elastic and stability behaviour of the subs
- To simplify the assembly process of the Feed Chain Assembly
- New interfaces with the satellite and qualified up to -180ºC.
- New subs materials qualified in the temperature range [-180ºC, +180ºC]
- To make strong the joints of the FSA upper part between the ribs and the from panel
- To make strong the joints of the FSA the bottom parts joint between the rear and the front bracket.
Challenges
This development program has some interesting and challenging aspects:
- Very innovative shaped rear panel formed by planar and curve parts
- Interface brackets qualified up to -180ºC
- Isostatic devices and bracket manufactured by RTM
- Titanium bracket obtained by ALM process
- Standard FSA for a wide range the feeders and subs
- Feed chain assemblies mounted at nominal position
- Subs supported by isostatic
Plan
The full development was split in two phases:
- Phase I: Dedicated to fix the requirement and to obtain a preliminary analysis and design. The phase I activities were developed in the frame of the ARTES 5.2 programme.
- Phase II: Dedicated to drive the preliminary design to a detailed design and to manufacture and qualify a QM. This phase was developed in the in the frame of ARTES 3.4 programme.
Current Status
The two phases of this development have been finished. The QM was submitted successfully to a complete qualification test campaign.
The new design is being applied to a commercial program and will be the FSA standard product of Airbus Defence and Space (CASA)