Feature: Components
LEO vs GEO One of the main differences between sourcing components and subsystems for LEO and GEO lies in the sheer quantity of components required. While GEO systems may require only a few tens of subsystems, LEO constellations can demand thousands of satellites in a single constellation. Ignoring this discrepancy in component volume and making the same assumptions for LEO as you have done for GEO can cause the entire cost equation to fall apart. GEO satellites may incorporate multiple
redundant sub-systems to ensure operation over a 15-30 year lifespan since launch costs for this far orbit are exceptionally high. A LEO constellation by comparison has much lower launch costs per satellite and so redundancy can be realised at constellation level by provisioning flight ‘spares’.
Quality and quantity Te recognition that fully ‘space qualified’ parts
are un-affordable in such volumes has led to a different approach, leveraging the components and processes used by manufacturers in industries demanding volume manufacture in high reliability industries such as Telecoms and Defence. Most important to consider is whether the supplier is used to making components and sub-systems in volume for high-reliability applications that should be demonstrable through field-data, from real-life applications. Added to that is the need to survive the
rigours of the space environment. Established guidelines such as those provided by the European Space Agency (ESA) offer a baseline for assessing component quality. Tese guidelines, coupled with thorough testing protocols, can instil confidence in the reliability of sourced components for LEO systems. Proprietary knowledge in this area is a key factor in achieving an affordable solution and finding a partner with this background is also crucial. Some suppliers have extensive field-data
available from similar applications such as Telecoms or Defence products. Using this, they can build a library of commercial components qualified to meet the harsh environment of Space. Seeking components that are both affordable
and suitable for Low Earth Orbit (LEO) applications does not require a compromise on quality. Engaging with a specialist who not only provides innovative solutions but also appreciates the cost implications of mass production can ensure you receive top-notch quality without breaking the bank. By carefully selecting the right suppliers who
understand the unique demands of Low Earth Orbit, companies can achieve a balance between innovation, reliability and cost-efficiency, ensuring that their satellite constellations are not only successful but also sustainable in the long term. For more information on Filtronic’s expertise in high performance RF for space applications. visit
https://filtronic.com/markets/rf- solutions-for-space/.
www.electronicsworld.co.uk September 2024 43
Page 1 |
Page 2 |
Page 3 |
Page 4 |
Page 5 |
Page 6 |
Page 7 |
Page 8 |
Page 9 |
Page 10 |
Page 11 |
Page 12 |
Page 13 |
Page 14 |
Page 15 |
Page 16 |
Page 17 |
Page 18 |
Page 19 |
Page 20 |
Page 21 |
Page 22 |
Page 23 |
Page 24 |
Page 25 |
Page 26 |
Page 27 |
Page 28 |
Page 29 |
Page 30 |
Page 31 |
Page 32 |
Page 33 |
Page 34 |
Page 35 |
Page 36 |
Page 37 |
Page 38 |
Page 39 |
Page 40 |
Page 41 |
Page 42 |
Page 43 |
Page 44 |
Page 45 |
Page 46 |
Page 47 |
Page 48 |
Page 49 |
Page 50 |
Page 51 |
Page 52 |
Page 53 |
Page 54
