NASA-Systems Engineering - NASA Systems Engineering...

NASA
Systems Engineering Handbook
SP-610S
June 1995

Contents
Foreword ................................ ................................ ................................ ............................ ix
Foreword to the September 1992 Draft ................................ ................................ .. x
Preface ................................ ................................ ................................ ............................... xi
Acknowledgements ................................ ................................ ................................ .......... xii
Introduction ................................ ................................ ................................ ....................... 1
Purpose ................................ ................................ ................................ ................... 1
Scope and Depth ................................ ................................ ................................ .... 1
Fundamentals of System Engineering ................................ ................................ ........... 3
Systems, Supersystems, and Subsystems ................................ ............................ 3
Definition of Systems Engineering ................................ ................................ .......... 4
Objective of Systems Engineering ................................ ................................ .......... 4
Disciplines Related to Systems Engineering ................................ .......................... 6
The Doctrine of Successive Rinfinement ................................ ................................ 7
The Project Cycle for Major NASA Systems ................................ ................................ . 13
Pre-Phase A - Advanced Studies ................................ ................................ ........... 13
Phase A - Preliminary Analysis ................................ ................................ ............... 14
Phase B - Definition ................................ ................................ ................................ . 17
Phase C - Design ................................ ................................ ................................ .... 18
Phase D - Development ................................ ................................ .......................... 19
Phase E - Operations ................................ ................................ .............................. 19
Role of Systems Engineering in the Project Life Cycle ................................ .......... 20
The “Vee” Chart ................................ ................................ ........................... 20
The NASA Program/Project Life Cycle Process Flow ................................. 22
Funding: The Budget Cycle ................................ ................................ .................... 25
Management Issues in Systems Engineering ................................ ............................... 27
Harmony of Goals, Work Products, and Organizations ................................ ......... 27
Managing the Systems Engineering Process: The Systems Engineering
Management Plan ................................ ................................ ................................ ... 28
Role of the SEMP ................................ ................................ ........................ 28
Contents of the SEMP ................................ ................................ ................. 28
Development of the SEMP ................................ ................................ .......... 29
Managing the Systems Engineering Process: Summary .......................... 30
The Work Breakdown Structure ................................ ................................ .............. 30
Role of the WBS ................................ ................................ .......................... 31
Techniques for Developing the WBS ................................ .......................... 31
Common Errors in Developing a WBS ................................ ....................... 32
Scheduling ................................ ................................ ................................ ............... 33
Role of Scheduling ................................ ................................ ....................... 33
Network Schedule Data and Graphical Formats ................................ ........ 33
Establishing a Network Schedule ................................ ................................ 34
Reporting Techniques ................................ ................................ ................. 35
Resource Leveling ................................ ................................ ....................... 35