NASA HDBK 4001 : 0
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The latest, up-to-date edition.
ELECTRICAL GROUNDING ARCHITECTURE FOR UNMANNED SPACECRAFT
FOREWORD
1. SCOPE
1.1 Scope
1.2 Purpose
1.3 Applicability
1.4 Constraints
2. APPLICABLE DOCUMENTS
2.1 General
2.2 Government documents
2.2.1 Specifications, standards, and handbooks
2.3 Order of precedence
3. ACRONYMS AND DEFINITIONS
3.1 Acronyms used in this handbook
3.2 Introduction of Concepts
3.3 Types of Grounding Systems
3.4 Bonding of Structural Elements
3.5 General Comments: Floating Circuits and Test
Verification
4. GROUNDING ARCHITECTURE REQUIREMENTS/SELECTION CRITERIA
4.1 Size of Spacecraft
4.2 Specific Implementations
4.2.1 Main Power Distribution System: Single or
Multiple Voltages
4.2.2 Ground Fault Isolation of the Main Power Bus
4.2.3 Power Sources
4.2.4 Power User Load Isolation From Power
Distribution System
4.2.5 General Interface Circuits (Command, Signal,
Data, etc.)
4.2.6 Attitude Control Elements
4.2.7 RF Interfaces
4.2.8 Pyro Firing Unit
4.2.9 Other Special Items, including Cable Overshields
4.3 Interface Isolation Circuits
4.4 Grounding of Support Equipment
4.5 Heritage Spacecraft
FIGURES
TABLES
APPENDICES
A Sample Ground Trees For Large Complex Spacecraft
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