Printed from https://fiscalreceipts.com/program/0604329N/ — data as of July 28, 2026. Every figure is citation-backed; see the page online for per-number provenance.
Small Diameter Bomb (SDB)
Budget Figures
FY2026 award data is a partial year — USASpending awards are reported on a rolling basis and the fiscal year does not close until September 30. why partial FY2026 data? →
- FY24
- $50.2M
- FY25
- $19.7M
- FY26
- $23.8M
● actuals (line) · ○ enacted · ◇ request — gaps are editions the program is absent from, never interpolated.
| Series | FY15 | FY16 | FY17 | FY18 | FY19 | FY20 | FY21 | FY22 | FY23 | FY24 | FY25 | FY26 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Actuals | $54.0M | $55.8M | $87.0M | $99.3M | $84.0M | $48.3M | $50.0M | $39.4M | $41.6M | $50.2M | ||
| Enacted | $57.1M | $97.6M | $112.8M | $97.0M | $50.1M | $51.1M | $40.9M | $42.9M | $52.2M | $19.7M | ||
| Request | $97.6M | $112.8M | $104.4M | $50.1M | $62.5M | $46.8M | $42.9M | $52.2M | $19.7M | $23.8M |
blank = series not published for this year; – = absent from that edition.
Asked vs spent: the PB2019 book requested $104.4M for FY2019; the PB2021 book reports $84.0M actually spent — $20.4M below the request.
Program Lineage
No predecessor/successor lineage was recorded for this program element — no FY-to-FY transfer into or out of this line was stated in the ingested J-books, and none was inferred from the program structure.
Description
Mission — Small Diameter Bomb (SDB)
Small Diameter Bomb Increment II (SDB II) is an ACAT 1C joint Department of the Air Force (USAF) and Department of the Navy (DON) program, with the USAF as the lead service. The SDB II increases joint lethality in contested environments. The SDB II can strike a diverse set of targets inside an adversary's air and missile defense networks to destroy mobile platforms through the weather. With increased loadout, range, and munitions effect the network enabled SDB II enhances close combat lethality in complex terrain and provides a net-centric operations capability. BRU-61C/A is a modification of the USAF BRU-61B/A upgraded for DON and F-35 environmental requirements. The BRU-61C/A is Universal Armament Interface (UAI) capable, pneumatic rack capable of carrying four SDB II's at once. The threshold aircraft for the USAF is the F-15E and F-35B and F-35C for the DON. F/A-18 E/F is an objective platform for the DON. The DON has adjusted the platform integration strategy through the inclusion of F/A-18 E/F using BRU-55 to deliver the capability to the warfighter aligned to the adjusted F-35 program's schedule. BUDGET ACTIVITY JUSTIFICATION: This program is funded under SYSTEM DEVELOPMENT AND DEMONSTRATION because it includes those projects that have passed Milestone B approval and are conducting engineering and manufacturing development tasks aimed at meeting validated requirement prior to full-rate production decision.
Mission — Small Diameter Bomb (SDB)
Small Diameter Bomb Increment II (SDB II) is an ACAT 1C joint Department of the Air Force (USAF) and Department of the Navy (DON) program, with the USAF as the lead service. The SDB II increases joint lethality in contested environments. The SDB II can strike a diverse set of targets inside an adversary's air and missile defense networks to destroy mobile platforms through the weather. With increased loadout, range, and munitions effect the network enabled SDB II enhances close combat lethality in complex terrain and provides a net-centric operations capability. BRU-61C/A is a modification of the USAF BRU-61B/A upgraded for DON and F-35 environmental requirements. The BRU-61C/A is Universal Armament Interface (UAI) capable, pneumatic rack capable of carrying four SDB II's at once. The threshold aircraft for the USAF is the F-15E and F-35B and F-35C for the DON. This Project Unit includes all funding associated with integration on the DoN threshold platforms, F-35B and F-35C. This includes the integration of the SDB II weapon with BRU-61C/A rack on the F-35B&C, modification to the USAF BRU-61 four-place bomb rack for F-35 and DoN shipboard environments, the integration of the Universal Armament Interface (UAI) software into the F-35 Operational Flight Program (OFP), test asset procurement, flight testing, logistics and associated software updates for the SDB II weapon system. Internal carriage is being integrated and tested to support F-35 Initial Operational Capability (IOC). BRU-61C/A integration on the F/A-18E/F will begin after F-35 integration is complete.
Justification
Accomplishments & Planned Programs (2)
JSF Integration
Funding provided for integration of SDB II on F-35B and F-35C, specifically for Lockheed Martin to develop F-35 Operational Flight Program (OFP) software, flight missions, and support and analysis of missions.
SDB II Weapon Support
Funding provides for SDB II Engineering, Manufacturing and Development (EMD) efforts including weapon vendor support (Raytheon Missile Systems - RMS), test assets, and government support. Test articles were procured in prior years as part of a joint buy with the Air Force for a better priced quantity buy.
Budget Line Items(workbook-cited)
Exhibit R-1
| Account | Org | Type | Amount |
|---|---|---|---|
| Research, Development, Test and Evaluation, Navy | N | FY24 Actuals | $50.2M |
| Research, Development, Test and Evaluation, Navy | N | FY25 Enacted | $19.7M |
| Research, Development, Test and Evaluation, Navy | N | FY25 Total | $19.7M |
| Research, Development, Test and Evaluation, Navy | N | FY26 Disc. Request | $23.8M |
| Research, Development, Test and Evaluation, Navy | N | FY26 Total | $23.8M |
Budget Details(R-2/P-40 facts)
| Project | All Prior Years | FY24 Actuals | FY25 Total | FY26 Base | FY26 Request |
|---|---|---|---|---|---|
| Program Element | $462.3M | $50.2M | $19.7M | $23.8M | $23.8M |
| 3072: Small Diameter Bomb (SDB) | $462.3M | $50.2M | $19.7M | $23.8M | $23.8M |
No follow-the-dollar view — this program's awards haven't been crosswalked at high confidence (flows cover 17 of 1741 programs). why coverage is partial? →
Awards
No awards are linked to this program element at high confidence — the budget→award crosswalk only asserts links it can defend, and this line has none yet.
Lobbying Mentions
No Senate LDA lobbying filing in the tracked data mentions this program element by code or alias.
No research dossier for this program — dossiers cover 50 of 1741 programs, the largest fully J-book-detailed lines by FY2026 requested dollars. why no dossier here? →