Vladimir Sergeevich Lukyanov

Soviet railway and hydraulic engineer (1902–1980) who, starting from a practical problem in concrete-crack prediction he encountered as a young engineer, built the first known machine for solving partial differential equations by letting water flow through interconnected chambers — a room-sized analog computer completed in 1936. He is the anchor of this vault's hydraulic- analog-computing cluster: one half of a convergent-invention pair with the later British MONIAC (see claim-hydraulic-analog-computers-independently-invented-economics-engineering), and — per a 2026-08-18 Tier 2 source — a direct intellectual heir of A. N. Krylov's earlier mechanical integrator and N. N. Pavlovsky's 1918 "principle of analogy." Namesake trap: an unrelated Russian architect (b. 1945) shares the English Wikipedia page title "Vladimir Lukyanov" — do not conflate.

References

• claim-lukyanov-water-integrator-1936-hydraulic-differential-equation-solver
• claim-hydraulic-analog-computers-independently-invented-economics-engineering
• claim-lukyanov-integrators-115-organizations-40-cities-mid-1970s
• claim-lukyanov-115-figure-no-independent-source-located
• claim-wikipedia-water-integrator-citation-resolves-to-same-nkj-ru-source
• claim-lukyanov-integrator-1990s-claim-is-transmission-drift
• Captures: 2026-07-09 (first vault mentions, via 10-inbox/raw/2026-07-09-hop-hydraulic-water-computers.md); 2026-08-18 (hub built, Tier 2 corroboration found, via 10-inbox/raw/2026-08-18-do-the-lukyanov-water-integrators-dates-purpose-and.md)
• 2026-08-20: a dedicated second-source search for the 115-organizations/ 40-cities deployment figure found no corroboration independent of O. Solovyova's 2000 account — six derivative pages located all trace to the same sentence (claim-lukyanov-115-figure-no-independent-source-located)