UMPB D-30SN Precision Modeling
Provenance
| Source | Organisation & people | Link |
|---|---|---|
| Encyclopedia entry | Wikipedia | en.wikipedia.org |
| Photo analysis | Foundation for Defense of Democracies (FDD) | fdd.org |
| Comparison with the GBU-39 | Aviación Line | aviacionline.com |
Introduction
This project reverse-engineers the Russian UMPB D-30SN glide bomb as a dimensionally accurate hard-surface model. Open reference photographs, patent drawings and published specifications replace the missing hi-res blueprints. The model became the foundation of a beginner precision-modeling course.
Background
The UMPB D-30SN is a Russian precision-guided glide bomb that emerged in early 2024 — often described as the Russian equivalent of the US GBU-39 SDB. Structurally a hybrid between bomb and cruise missile, depending on whether it carries a turbojet or solid-fuel booster.
This example focuses on hard-surface precision modeling and functional reverse-engineering: matching technical specifications and (limited) blueprints to create a dimensionally accurate asset — the foundation of a beginner precision-modeling course.
Technical specs for modeling
- Caliber/diameter: 300 mm (from "D-30" designation).
- Warhead: FAB-250 equivalent (~113 kg explosive).
- Key features: cruciform tail (4 control surfaces), folding wing module on top (likely source of "UMPB"), Kometa-M8 CRPA jam-resistant antenna, foreign microelectronics (STMicroelectronics, Murata, etc.).
Technical workflow
- Blueprint alignment: hi-res blueprints not public → source reference photos + patent drawings (KTRV), use known 300 mm diameter for scale, refine from open-source imagery.
- Modular component geometry: nose cone, universal carrier module (folding wings), folding wing assembly (animatable drop sequence), swappable propulsion tails (jet vs booster).
- No texture focus: simple materials, color-coded components (red = warhead, gray = body, blue = guidance).
Summary
A worked example of functional reverse-engineering: scattered photographs, published specifications and a known 300 mm diameter become a component-structured asset with an animatable wing assembly, without access to hi-res blueprints.
Resources
- Precision Modeling — the workflow this case teaches
- Measurements — scaling from a known diameter
Sources
- Wikipedia — UMPB D-30SN — designation and specifications
- FDD — Photos offer insights on Russia's new UMPB D-30SN — visual identification reference
- Aviación Line — UMPB D-30SN compared with the GBU-39 SDB — the GBU-39 equivalence