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| Format: | Recurso digital |
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Zenodo
2025
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| Online Access: | https://doi.org/10.5281/zenodo.17747008 |
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Table of Contents:
- <p>Comprehensive technical analysis of U.S. 155mm artillery ammunition production capacity constraints and achievable expansion pathways through Clustered Extrusion Capacity Architecture (CECA). Documents production gap: pre-war capacity 14,400 rounds/month (2021), current ~40,000 rounds/month (2024), 2026 target 100,000 rounds/month, observed Ukraine high-intensity consumption 180,000-240,000 rounds/month—even target capacity covers only 40-55% of demonstrated demand. Identifies nine coupled constraints creating multi-surface optimization problem where traditional single-variable approaches fail: C1 facility lead time (greenfield 3-7 years including Iowa FAC ~40 months to full rate, brownfield 12-24 months), C2 energetics ceiling (production cannot exceed explosive supply with zero domestic TNT until Graham plant 2027-2028 enabling ~17,500 shells/month from 5M lbs/year capacity at 23.8 lbs TNT per M795 shell), C3 workforce pipeline (DAC certification throughput <100 graduates/year with 12-18 month learning curve to full productivity, training only at McAlester), C4 QD physics (quantity-distance formula D=40×W^(1/3) requires ~425 feet radius for 1,190 lbs NEQ from 50 shells creating ~13 acres secured perimeter per distributed site), C5 permitting parity (identical NEPA 12-18 months and Title V air permit 12-24 months regardless of facility size eliminating distributed manufacturing regulatory advantage), C6 qualification throughput (each production line requires FAAT campaign at Yuma Proving Ground with Mesquite documented missing 6 consecutive FAAT dates demonstrating bottleneck), C7 technology bounds (screw extrusion provides 32 shells/hour continuous throughput vs 4-12 hour melt-cast cooling but cannot change explosive chemistry or bypass qualification requirements), C8 training infrastructure (DAC certification capacity fixed at McAlester facility preventing parallelization), C9 multi-surface incompatibility (fundamental physics and regulatory trade-offs prevent any single approach from optimizing all constraints simultaneously). CECA solution architecture introduces Clustered Extrusion Line Package (CELP) as standardized production quantum: 12,000 shells/month capacity at 2-shift operations (23,000 at 3-shift), 12-24 month brownfield commission timeline, 50-70 FTE workforce requirement, one FAAT qualification slot consumed per CELP. Target achievement requires 8-9 CELPs deployed across 2-3 major Army Ammunition Plants (Iowa, Holston, Scranton). Brownfield clustering rationale: existing AAPs provide paid-for QD infrastructure representing billions in sunk cost, amendable environmental permits avoiding new application timelines, established security perimeters and hardened magazines, existing workforce base and logistics networks. QD physics proof demonstrates distributed manufacturing non-viability: ten distributed sites require 130 acres total secured perimeter for less capacity than single centralized plant. Screw extrusion technical advantages: immediate throughput without phase-change cooling delays, robotic automation compatibility enabling consistent quality, statistical process control replacing 100% X-ray inspection requirement of melt-cast. Binding constraint gates enforced by CECA: energetics gate (no production exceeds available explosive supply—Graham enables ~17,500 shells/month, gap requires imports or IMX-101 substitution), qualification gate (CELP commissioning rate cannot exceed YPG FAAT throughput which is finite though currently undisclosed), workforce gate (each CELP requires 50-70 certified personnel with DAC throughput limiting total staffable CELPs and 12-18 month training duration). Timeline bands: Band A 0-6 months no new capacity possible with only shift optimization available, Band B 6-24 months limited CELP additions bound by FAAT and energetics, Band C 2-10 years step-function increases tied to Graham and Iowa FAC milestones. Critical path dependency chain: Graham TNT plant (2027-2028) unlocks energetics supply → Iowa FAC plus brownfield CELPs bring LAP capacity online → YPG FAAT throughput enables qualification completion → DAC workforce pipeline provides CELP staffing → production achieved. All four parallel paths require resourcing; neglecting any single path causes system-wide failure regardless of investment in others. Alternative approach comparison: status quo plus funding achieves 40-60k ongoing but fails target, distributed manufacturing achieves <30k over 5-7 years but non-viable due to QD physics, greenfield new AAP achieves 50k+ but 7-10 year timeline prohibitive, allied aggregation provides supplement only facing same global constraints, CECA achieves 100k by 2029 at $1.5-2B conditional on constraint satisfaction. Constraint relaxation options if targets cannot be met: R1 extend timeline accepting 2029-2030 with stockpile risk during ramp, R2 reduce target to 75,000/month with lower deterrence capacity, R3 increase imports creating supply chain vulnerability, R4 compress qualification accepting higher dud rate risk reprising Vietnam-era quality problems, R5 reallocate workforce from other programs hollowing out alternative production, R6 surge training requiring 2-3 year lead time and capital investment for DAC expansion. Validation requirements before CECA achieves operational status: T1 CELP throughput validated at ≥28 shells/hour sustained, T2 brownfield commission time confirmed at 12-24 months, T3 FAAT throughput quantified as YPG campaigns/year, T4 Graham timeline and capacity confirmed, T5 workforce pipeline quantified through DAC throughput measurement, T6 cost model validated against actuals, T7 joint feasibility confirmed with all surfaces satisfied or relaxation set explicitly identified. Key parameters: CELP canonical capacity 12,000 shells/month, DSD-155 throughput 32 shells/hour, CELPs needed for 100k/month target 8-9, Graham TNT capacity 5M lbs/year (~17,500 shells/month equivalent), TNT per M795 shell 23.8 lbs, CELP commission time 12-24 months brownfield vs ~40 months greenfield, workforce per CELP 50-70 FTE, Iowa FAC full capacity 36,000 shells/month (~2029), QD requirement per distributed site ~13 acres, total program cost $1.5-2.0B incremental. Explicit acknowledgment of CECA limitations: no architecture produces significant capacity in 0-12 months for near-term surge, Graham alone enables only 17,500/month requiring continued imports for energetics independence, Holston (RDX/HMX) and Radford (NC) remain sole-source single points of failure, 2026 target not achievable under physical constraints with 2029 representing realistic timeline. Addresses DoD and Congressional requirement for constraint-based production planning enabling honest capacity forecasting against physical reality rather than narrative-driven targets, with framework applicable to tracking all six constraint surfaces in production planning and tying CELP commissioning to demonstrated FAAT availability rather than construction completion.</p>