SEDSAT-2 Design Review II
From SEDSWiki
Contents |
Summary
This is an early draft...
Review Board
- Lavina Parwani, Project Manager, Philippines
- Tom Andre Nordheim, Project Manager, United Kingdom/Norway
- Kartik Kumar, Project Manager, The Netherlands
- Anna Daurskikh, Systems Engineering Lead, Sweden/Russian Federation
Subsystem Representatives
- Ann Daurskikh, Systems/Struct Lead, Sweden/Russian Federation
- Steve Maughan, Communications Lead, United Kingdom
- Tom Nordheim, Payload Lead, United Kingdom/Norway
- Pavan Kumar, Power Lead, India
Objectives
- Identify rate of progress of each subsystem
- Identify and suggest solutions to key problem areas
- Finalize a timeline for the completion of the mission
Key Points of Dicussion:
- Current state and design of subsystem
- Progress since Design Review I
- Preliminary subsystem parameters
- mass
- volume
- power consumption
- component placement
- Critical issues
- Time frame for completion of subsystem
- Finances
- Update on estimated budget
- Sources
Subsystem Specific Results
Structures
After a preliminary review had been carried out and the management called in for a meeting, it had been decided that this subsystem was to be integrated with the Systems Engineering subsystem. The main reason for this was the fact that the subsystem was far behind schedule with regards to the overall satellite progress. Having undergone this restructuring, as well as having recruited new members, it has started its efforts anew; as such, it is to early too properly review this subsystem.
It should however be noted that they have made significant progress after the reorganization. They have decided to build the CubeSat structure from scratch. Following this decision, they are at present constructing detailed CAD models of the cubesat structure using SolidWorks
- Link to CubeSat SolidWorks models
- Link to rationale for building the CubeSat Structure
Power
The Power team has provided a very detailed and thorough design review document, and they have documented their work well.
They have identified getting funding for space grade solar panels as a major obstacle. However, we believe that this problem may be resolved by considering and exploring the use of solar panels originally built for terrestrial application, which are cheaper, and then adapting them for this mission.
Another issue that was raised was the need for additional manpower, but this is being currently being addressed as the team is currently in contact with several North American universities with the aim to recruit additional team members.
The subsystem's progress is seems to be quite good. They have a preliminary design ready, and have identified the components they need in order to start building a prototype. According to their own estimates they should have completed their subsystem by October. The design of the subsystem, as it currently stands, have been detailed in the following documents:
Ground
As this team was not showing significant progress it was decided that it would be re-assigned to the leadership of Steve Maughan, lead of communications. The team would benefit greatly from additional manpower and expertise, steps are being taken to this effect.
ADCS
Command and Data Handling
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Communications
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Conclusions
The tentative timeline which called for integration at the IAC2008 will be modified to allow ground and structures, both of which had lagged due to bad starts, to develop apace with the rest of the team. We have confidence that the modification will not be huge as both teams now show great promise, and have recruited very able people in the recent months since the first design review. The new timeline reflects a more realistic view of the development of the team. It plans to set integration in early 2009, and the meeting at the IAC will be for the final and critical design review.
Funding is a great issue. Power for example mentioned the price of solar panels, and it's large enough to challenge a whole team, let alone a sub-team. Looking for support and sponsorships works in some cases (as witness the generous provisions of samples to the Payload team) but sometimes it is a difficult path, especially as, according to the rules of AMSAT, we cannot offer anything in return (to communicate over amateur frequencies). Funding will also be necessary to cover travel costs.
To this end, the Marketing and Management team have been trying to come up with sources of funds, but they have so far have been, also, in the planning stages. Critically speaking, this team needs to move faster, understandable though it may be that marketing a volunteer project is not an easy task.
Design Review III
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