NASA HDBK 4001 : 0

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

Defines describes spacecraft grounding architecture options at the system level. Implementation of good electrical grounding architecture is an important part of overall mission success for spacecraft.