Transcript Slide 1

Lunar Reconnaissance Orbiter (LRO)
SRR/Mechanical System
August 16-18, 2005
[email protected]
NASA’s Goddard Space Flight Center
301-286-5907
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Lunar Reconnaissance Orbiter (LRO)
Mechanical System Applicable Documents
431-RQMT-000004
430-PG-1410.2.1
430-RQMT-000006
431-ANYS-000010
431-PLAN-000005
431-PLAN-000110
431-SPEC-000008
431-SPEC-000012
431-SPEC-000091
431-SPEC-000112
431-SPEC-000113
(ALL)
(ALL)
NASA’s Goddard Space Flight Center
LRO Requirements Document
Robotic Lunar Exploration Program Configuration Management Procedure
Robotic Lunar Exploration Program Mission Assurance Requirements Document
Radiation Analysis for the Lunar Reconnaissance Orbiter
LRO Systems Engineering Management Plan
LRO Contamination Control Plan
Electrical Systems Specification
LRO Mechanical Systems Specification
LRO Thermal Systems Specification
LRO Technical Resource Allocation Specification
LRO Pointing and Alignment Specification
LRO Instrument Mechanical Interface Control Documents
LRO Spacecraft Component Mechanical Interface Control Documents
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Lunar Reconnaissance Orbiter (LRO)
Mechanical System Level 2 Flow Down Key Requirements
Level 2 Req.
Level 3: Requirements
Concept/Compliance
Paragraph
Requirement
MRD-21
Mission Duration
Mechanical Level
3 Requirements
Paragraph 1.0
The Mechanical System shall be adequately designed and analyzed to support a 14 Month
Mission Life.
The Mechanical System shall be designed and analyzed to minimize Thermal/Structural
Distortion and maximize Stability
See PM, AM, IM, DPLY Level 4 Specs.,
Mech. CAD Model, Mech. Assembly
Drawing Packages, Analysis Reports
MRD-70
Structural
Stability
MRD-71
Fields of View
MRD-73
Accessibility
Mechanical Level
3 Requirements
Paragraph 2.0 &
Paragraph 3.0
The Mechanical System shall accommodate the LRO Components/Instruments/Tech
Demo and their Requirements , including Optical FOV and Thermal Radiator FOV
requirements, as well as pointing and alignment requirements.
The Mechanical System shall accommodate the CRaTER, Diviner, LAMP, LEND, LOLA, &
LROC, Instruments and their Requirements per Inst. MICDs
The Mechanical System shall accommodate the Mini-RF Tech Demo and its
Requirements per Inst. MICDs
The Mechanical System shall accommodate the Spacecraft Components and their
Requirements per MICDs.
See PM, AM, IM, DPLY Level 4 Specs.,
Mech. CAD Model, Mech. Assembly
Drawing Packages, Analysis Reports
MRD-15
Solar Array
Tracking
MRD-16
Antenna Tracking
Mechanical Level
3 Requirements
Paragraph 3.0
The Mechanical System shall provide a release, deployment, and articulation system for
the deployment and articulation of the Solar Arrays (SADAS).
The Mechanical System shall provide a release, deployment, and articulation system for
the deployment and articulation of the High Gain Antenna System (HGADAS)its
See DPLY Level 4 Specs., Mech. CAD
Model, Mech. Assembly Drawing
Packages, Analysis Reports
MRD-2
Launch Vehicle
MRD-28
Vehicle
Interfaces
Mechanical Level
3 Requirements
Paragraph 4.0
The Mechanical System shall be compatible with the DELTA II Launch Vehicles and their
requirements per LRO-L/V Mission Specification (TBD Doc. #)
The Mechanical System shall be designed to meet the mechanical requirements of the
Delta II L/V as defined in the DELTA II Payload Planners Guides
See LRO-L/V MICD. CAD Model, Mech.
Assembly Drawing Packages, Analysis
Reports
NASA’s Goddard Space Flight Center
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Lunar Reconnaissance Orbiter (LRO)
Mechanical System Level 2 Flow Down Key Requirements
Level 2 Req.
Level 3: Requirements
Paragraph
Concept/Compliance
Requirement
MRD-49
Pointing
Allocations
Mechanical Level
3 Requirements
Paragraph 5.0
The Mechanical System shall comply with LRO LRO Pointing and Alignment Specification
431-SPEC-000113, Includes Instrument, S/C Components, Solar Array & High Gain
Antenna
See PM, AM, IM, DPLY Level 4 Specs.,
Mech. CAD Model, Mech. Assembly
Drawing Packages, Analysis Reports
???
Mechanical Level
3 Requirements
Paragraph 8.0
The Mechanical System shall Adopt a Single String approach for the Mechanical /
Structural Design and Development and perform adequate analyses and tests to verify
design. Selective Redundancy shall be allowed
See PM, AM, IM, DPLY Level 4 Specs.,
Mech. CAD Model, Mech. Assembly
Drawing Packages, Analysis Reports
MRD-76
Support
Equipment
Mechanical Level
3 Requirements
Paragraph 11.0
The Mechanical System shall provide the LRO Observatory MGSE.
See PM, AM, IM, DPLY Level 4 Specs.,
Mech. CAD Model, Mech. Assembly
Drawing Packages, Analysis Reports
MRD-69
Contamination
Control
Mechanical Level
3 Requirements
Paragraph 14.0
The Mechanical System shall Incorporate Instrument Dry Purge Lines on Orbiter up to T-0
(umbilical break-away line).
See PM, AM, IM, DPLY Level 4 Specs.,
Mech. CAD Model, Mech. Assembly
Drawing Packages, Analysis Reports
NASA’s Goddard Space Flight Center
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Lunar Reconnaissance Orbiter (LRO)
Mechanical Concept
ADDITIONAL VIEWS
TO FOLLOW
NASA’s Goddard Space Flight Center
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Lunar Reconnaissance Orbiter (LRO)
Mechanical Verification Summary
•
Verify all Mechanical / Structural Designs and Functionality
–
Analysis
• Comply with LRO General Structural-Thermal Environments, Interface, and Veification
Requirements
• Overall System Level Verification Matrix
• Verification by Analysis, and or Verification by Test of Proto-Type and/or Proto-Flight
Units
• Facilitate Functional and Performance testing of the LRO Observatory
• S/A & HGA Deployment Monitoring (Potentiometers)
• S/A & HGA shall Survive in Deployed Position Immediately after Observatory Separation
thru LTO
– Qualification Testing
• Mech System
• Orbiter
– Functional Testing
• Life Tests
• Deployment testing in T/V
NASA’s Goddard Space Flight Center
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Lunar Reconnaissance Orbiter (LRO)
Mechanical Requirements Summary
•
Mechanical System is ready to proceed to PDR
NASA’s Goddard Space Flight Center
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