The Closed-Loop Planning System for Weapon System Readiness

by Hillestad, Richard; Kerchner, Robert; Miller, Louis W.; Resnick, Adman; Shulman, Hyman L.

• ISBN13: 9780833038647
• ISBN10: 0833038648
• Format: Paperback
• Copyright: 2006-03-15
• Publisher: RAND Corporation

Summary

The Closed-Loop Planning System addresses the U.S. Air Force shortcoming in effective allocation of limited funding for depot--level repair across weapon systems and calculation of the readiness implications of such allocations.

Table of Contents

Preface	p. iii
Figures	p. xi
Tables	p. xiii
Summary	p. xv
Acknowledgments	p. xxi
Abbreviations	p. xxiii
Introduction	p. 1
Context	p. 1
The Goals of a Planning System for Depot-Level Repair	p. 4
The "Closed-Loop" Depot-Level Repair Planning System	p. 5
Organization of the Report	p. 6
Current Processes for Planning Depot Repairs and the Need for the Closed-Loop Methodology	p. 7
The Sources of Demand for Depot Repair of Repairable Components	p. 7
Stages of Planning and Execution	p. 8
MAJCOM and AFMC Long-Term Planning	p. 9
A Closer Look at SIRS	p. 11
SIRS Does Not Consider Capacity Constraints on Repair Resources	p. 11
SIRS Does Not Recognize the Variance of Repair Demands for NRTS Parts	p. 12
SIRS Does Not Provide a Relationship Between Budget Allocations for Repair and Readiness	p. 12
Allocation of Obligation Authority to Sources of Repair	p. 12
ALC Planning	p. 13
Daily Execution	p. 14
Formulation of the Depot Repair Planning Problem	p. 17
The Overall Depot Repair Planning Problem	p. 17
Why Optimize?	p. 17
The Objective-Aircraft Availability	p. 18
Measures of Aircraft Availability	p. 18
Setting the Confidence Level	p. 24
Demands for Depot Repair	p. 24
The Decision Variables-the Components to Repair	p. 25
Planning Period and Point of Evaluation	p. 27
What Needs to Be Repaired?	p. 27
Constraints	p. 29
Budget Constraints	p. 30
Carcass Constraints	p. 31
Repair Capacity Constraints	p. 34
Stepping Through the Solution to the Optimization Problem	p. 37
The Prototype Database and Model for Depot Repair Planning	p. 47
Database for the Prototype	p. 47
Squadrons and a Scenario	p. 48
Avionics LRUs and Test Stands	p. 50
Asset Data	p. 52
The Prototype Planning Model	p. 53
Comparisons with Current Planning Models	p. 64
Capability Differences	p. 64
NSN Versus Work Center View	p. 66
Cost Comparison with Constant Performance	p. 67
Extensions and Next Steps	p. 69
Some Possible Extensions to the Planning Model and Its Use of Data to Increase Its General Applicability	p. 69
Planning for Future Years and Planning During the Execution Year	p. 70
Optimizing Buy and Repair Decisions Together	p. 70
Planning Depot-Level Repairs to Support a CIRF	p. 72
Use of the Closed-Loop Planning System to Evaluate Spending Plans	p. 72
Replanning with the Closed-Loop Planning System	p. 74
Next Steps	p. 75
Appendix
Mathematical Description of the Planning Model	p. 77
The Prototype Database	p. 89
Bibliography	p. 95
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