Ralph Program Overview

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Ralph Program Overview Schedule
New HorizonsShedding Light On Frontier Worlds
Ralph Instrument Critical Design ReviewAug 5
6, 2003

• Bob Parizek
• Ralph Program Manager, Ball Aerospace
• 303 939-4853
• rparizek_at_ball.com

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The Ralph Design Program Status Is The Focus
For The Next Two Days

• Brief Overview Of The Ralph Instrument
• Introduce Partners Producing The Ralph Instrument
• Resources Are Available
• Schedule Approach and Status
• Limited Engineering Model Hardware Planned
• Longevity Approach
• Summary

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The Ralph Instrument Contains Two Detectors MVIC
and LEISA
Cold Radiator
Warm Radiator
Thermal Straps
Purge Assy
Alignment Cube (Allocated space)
Thermal Strap
Aperture Baffle
Ralph Electronics
3X S/C Flexures
MVIC Detector Package
LEISA Detector Package
LEISA Detector Cabling
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The Ralph Instrument Contains Two Components TDA
Electronics
Cold Radiator
Warm Radiator
Tertiary Mirror
Aperture Baffle
TDA Telescope Detector Assy
Primary Mirror
Electronics
3X S/C Flexures
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The TDA Design Is Simple, Effective and Is
Designed To Last
Detector Packages
Aperture Baffle
Solar Illumination Lyot Stop Assy
Aperture Door Pin-Pull Actuator
Purge Asy
Aperture Door Assy (Open configuration)
Tertiary Mirror
3X S/C Flexure
Primary Mirror
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Ball, GSFC and SwRI Are Partners In Developing
The Ralph Instrument
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No Staffing Issues Resources Are Available And
Scheduled When Needed

• Personnel resources are currently adequate the
  magnitude of the Ralph effort is well within
  capabilities and availability
• Facilities are operational and available
  scheduled when needed
• CCD test lab in CO-5
• Production facilities in various locations
• Machine shop
• Metal treatment and painting
• Electronics assembly both in-house and vendors
• Detector packaging lab in FM-1
• Electronics test lab in FA-2
• Vibration tables and thermal vacuum chambers in
  FT-1
• Performance verification test equipment mostly
  available from other projects
• Ralph-specific GSE is planned and some items in
  work no significant issues

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No Schedule Management Reserve Dictates
Success-Oriented Scheduling Approach

• Several month Phase C/D delay since PDR and Delta
  PDR
• Schedule compression results in several, parallel
  critical paths
• Almost everything is near the critical pathby
  plan
• One month internal management reserve extracted
  by applying nearly equal compression to parallel
  paths
• Reserve reluctantly doled out as immovable issues
  occur
• Only if work arounds exhausted
• Initial one month reserve still intact

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Some Engineering Model (EM) Hardware Built To
Reduce Technical and Schedule Risk

• EM MVIC - Multi-spectral Visible Imaging Camera
• Packaging path finder and assembly process
  verification
• Early MVIC performance and detector-level
  environmental testing
• EM LEISA Linear Etalon Imaging Spectral Array
• Assembly process verification
• Early performance testing
• EM Electronics
• Prove electronics design including detector
  interfaces
• Enables simultaneous flight PWA testing at SwRI
  and Ball
• Becomes integral to Ralph test set to support EM
  MVIC, EM LEISA and flight TDA functional and
  environmental testing

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Success-Oriented Schedule Is Monitored and
Adjusted Continuously
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The TDA and Electronics Follow Separate Paths
Until Final Integration and Performance Testing
Insert Simplified Summary Version of IT Flow
Chart
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MVIC and LEISA Detector Schedules
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Optics, TDA Housing, MLI Schedules
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Electronics and TDA IT
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Ralph Instrument IT
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The Ralph Program Is A Challenge The Team Is Up
To The Task

• The Ralph Team Is Fully Staffed and Working Well
  Together
• Other Resources Are Available
• The Design Is Maturing NicelyAs You Will Hear
  Today
• The Schedule Is Very Tight But Achievable