[Solomon Westerman] [PM] Week 5 MDR Updated Check the website if you have any mission requirement questions! [Solomon Westerman] [PM]

Timeline Project Timeline Week 5 - PDR complete by end of week DURING: Evaluation of design alternatives for each phase END: PDR is update to MDR, final design requirements are documented END: Will have X1 and X2 complete by end of week to satisfy PDR requirements Week 6-7 – CDR complete by end of week (~3 weeks away) DURING: Evaluation of design alternatives for each phase (priority). If subsystem has already reached maturity and we are fairly confident of its selection, perform detailed analysis (sub-priority) END: All design alternatives will have reached maturity END: “Alternative Design Freeze” - no other alternatives will be able to be analyzed END: Selection of final configuration END: Draft writing begins Week 8-9 – Final Design Freeze at end of week (Spring Break!) DURING: Detailed analysis on selected mission configuration. Changes to configuration will be made only if serious issues occur. END: Final mass/power/volume budgets set for all phases END: Draft writing nearly complete (due Wed. after spring break to PM) After Spring Break – Crunch time 2 weeks until your final report due to PM 2 weeks + weekend until your final slides due to PM

Project Timeline 2/9/2008 Task Week 5 Week 6 Week 7 Week 8 Week 9 M W F PDR Complete   Design Freeze (Mass/Power/Volume set) Draft Writing Evaluation of design alternatives (all phases) All design alternatives reach maturity and freeze Selection of final configurations Detailed analysis of X1, X2 Detailed analysis of final configurations

Today Separate alternative designs into three levels: Preliminary scalability analysis (almost) complete (X2) Have power to focus on alternative designs (X3,X4) Numbers from X1,X2 analysis will indicate if design changes will benefit system Separate alternative designs into three levels: Level 1: Large system change, possibly affecting more than one phase Level 2: Medium system change, has a > 10% affect on mass, power, volume from X1 or X2 for a particular phase Level 3: Small system change, < 10% affect on mass, power or volume from X1 or X2 but can make integration simpler, system more reliable, cheaper, etc. Most promising alternatives for each phase will be listed today Each level 1 and 2 alternative assigned a POC (Point of Contact) and APOC (Alternative POC) by Phase lead Each level 3 alternative assigned a POC by Phase lead Will provide responsibility and set deliverables for POC (can be used for presentation material)

Alternative Design Deliverables (not complete) Order-of-magnitude mass/power/volume savings (kg,W,m^3) Potential complexity/cost/ease of integration savings Complexity of analysis (days to reach maturity) Recommend use for GLXP size? Recommend use for arbitrary payload size?

To-Do POC PM Upload Design Alternative List (by 4:00PM) Upload Design Alternative form (by tomorrow) Upload Draft writing expectations (by tomorrow) Phase Leader Assign POC to all design alternatives, modifying Design Alternative List (by 8:00 PM) POC Complete Design Alternative form (by 6:00PM Monday 2/16)