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PFP Mechanical Peer Review Mechanical Design Requirements

PFP Mechanical Peer Review Mechanical Design Requirements. Paul Turin, LME 2010 May 10. PFP Environments. Environmental Limits. Zone 1. Zone 1. Zone 2. Circled items – We’ve suggested zone changes. Random Vibe. Factor of Safety. ERD table 23. Instrument Design Loads.

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PFP Mechanical Peer Review Mechanical Design Requirements

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  1. PFP Mechanical Peer Review Mechanical Design Requirements Paul Turin, LME 2010 May 10

  2. PFP Environments

  3. Environmental Limits Zone 1 Zone 1 Zone 2 Circled items – We’ve suggested zone changes

  4. Random Vibe

  5. Factor of Safety ERD table 23

  6. Instrument Design Loads Margin of Safety shall be positive (ERD 4.1.6): Design to worst of either case 1 or 2 and case 3:

  7. Instrument Design Loads

  8. Instrument Design Loads

  9. Instrument Design Loads • Any significant Qs in instrument need to be accounted for • Loads should come down with 1st CLA results, currently expected Nov ’10 -- Mar ’11 • Probably too late for ETU testing (if performed, TBD)

  10. Misc reqm’ts from ERD • Acoustics for STATIC only, due to carbon foils (ERD 3.4.3) • Pressure Profile – we use GSFC rule of thumb of 1in2/ft3 (ERD 3.4.4) • Pending OK by LM • Aerothermal heating 0.1W/cm2 for 10 min duration max (ERD 3.5.3) • Mechanisms tested to 2x # flight cycles (ERD 4.2.5.1) • Natural Freq>100Hz or structural test required (ERD 4.2.5.2) • Self Shock: Instruments with deployables perform self-shock two times, preferably initiated by Orbiter circuits (post integration)(ERD 4.2.5.5.1,2)

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