A. N. Krylov

Russian and Soviet naval engineer, applied mathematician, and full member of the Academy of Sciences (1863–1945), known for foundational work on ship theory and for building early mechanical devices to solve the differential equations that naval and structural engineering kept generating faster than hand calculation could handle. Vault-relevant as the direct engineering ancestor of Vladimir Lukyanov's 1936 hydraulic integrator: around 1910 — a quarter-century earlier — Krylov built a mechanical analog "differential integrator" for solving fourth-order ordinary differential equations, a device Lukyanov is reported to have studied directly before designing his own water-based solver.

References

• claim-lukyanov-water-integrator-1936-hydraulic-differential-equation-solver
• Captures: 2026-08-18 (first vault mention, via 10-inbox/raw/2026-08-18-do-the-lukyanov-water-integrators-dates-purpose-and.md) — named as a predecessor in Solovyova's 2000 account; not yet independently sourced beyond that secondary mention.