R-2A Activity · President's Budget PB2027

SDB II Development and Engineering Changes

Activity a0·Project 675191 — SDB Increment II·PE 0207327F·U.S. Air Force
FY2027 Request
$25.5M
▲ 3.8% vs FY2026
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This activity requests $25.5M in FY2027, 100% of project 675191, up 3.8% on FY2026. The R-2A exhibit describes it across FY2026–FY2027, including what the FY2027 money is planned to buy.

FY2027 Request
$25.5M
▲ 3.8% vs FY2026
FY2026 Enacted
$24.6M
▲ 14% vs FY2025
FY2025 Actual
$21.5M
Prior year
Planned work

What the FY2027 request buys

Verbatim from the R-2A exhibit for project 675191 of PE 0207327F. This is the budget justification's own description of work that has not happened yet — the one thing no other level of the budget carries.

FY2027 planned work

Continue integrated CCA stack design verification testing and qualification to support Configuration 2 AUR integration and qualification. Continue integration and test of the TacNet 1.5 WDL with the new CCAs and associated OFP changes. Continue development, qualification, and testing of engineering changes associated with platform integration, program protection, exportability, cyber security, enhanced lethality, survivability, anti-jam and anti-spoof capabilities, threat defeat, software-based capability enhancements, obsolescence, and affordability. Procure developmental test assets to support developmental qualification and testing, as required. Conduct developmental Captive Flight Tests, platform integration testing, and flight test shots. Continue integration of SDB II with Command and Control Infrastructure, including AOC integration and JTAC kits. Continue technical order updates to support ongoing OFP development efforts. Continue BRU-61 OFP updates and integration. Conduct trade studies and concept development for technology refresh redesigns as required based on obsolescence forecasts.

FY2026 to FY2027 change

Funding increased due to slight increase in SIP program option year two, upgrades to SDB II baseline hardware/software to meet emerging threats, maintain compatibility with external system performance. Activities include, but are not limited to, data link cryptographic modernization, program protection, exportability, cyber security, advanced guidance, navigation and control, enhanced lethality, and address obsolescence issues and affordability opportunities.

Before the request year

FY2026: the year under way

Prior-year accomplishments and current-year plans from the same exhibit. Context for the FY2027 plan, not a series — an activity partitions its project exactly in the request year, but can under-cover it in earlier years.

FY2026 plans — current year

Executed System Improvement Program (SIP) to continually advance capability of the weapon and transition program to a steady OFP update cycle, executed under agile development. Continue to perform Operational Flight Program (OFP) software and firmware updates to integrate new Military-Code (M-Code) GPS receiver and forward and aft electronics upgrades into the SDB II GBU-53A/B Configuration 2 All Up Round (AUR) weapon. Integrated CCA stack design verification testing and qualification to support Configuration 2 AUR integration and qualification. Integrated and test of the TacNet 1.5 weapons data link (WDL) with the new CCAs and associated OFP changes.

Money

Three years, and no five-year plan

An R-2A activity publishes the prior year, the current year and the budget year. The FYDP outyears exist at project and program-element level and are deliberately absent here rather than inferred. Estimate types are colored and never summed into one figure.

25021.5FY25ACTUAL24.6FY26ENACTED25.5FY27REQUEST
Actual Enacted Request
Fiscal YearEstimate TypeAmount ($M)
FY2025Actual21.5
FY2026Enacted24.6
FY2027Request25.5

This activity is 100% of project 675191's FY2027 request and 100% of PE 0207327F's. In the request year the activities under a project sum to it exactly; in the current year they under-cover it in about 9% of cases, so an activity's delta can legitimately exceed its parent's and the two must not be compared row to row.

Where this sits

2 activities in project 675191

Every R-2A line of this project, largest FY2027 request first. Linked where the activity has enough of its own narrative to carry a page; the rest are shown in full on the program-element page.

SDB II Development and Engineering Changes — this activity$25.5M ▲ 4%
SDB II M-Code$0.0M
Source
FY2027 Department of the Air Force RDT&E Budget Justification · Exhibit R-2A · PE 0207327F, project 675191 (President's Budget PB2027). Congressional marks are recorded on the program element, never on an activity.
Machine access
Markdown twin /programs/0207327F/675191/a0.md · MCP mcp.hitchintel.combudget_get_activity