R-2A Activity · President's Budget PB2027

Experimentation Space

FY2027 Request
$20.5M
▼ 90% vs FY2026
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This activity requests $20.5M in FY2027, 100% of project 64S444, down 90% on FY2026. The R-2A exhibit describes it across FY2026–FY2027, including what the FY2027 money is planned to buy.

FY2027 Request
$20.5M
▼ 90% vs FY2026
FY2026 Enacted
$209.5M
▲ 52% vs FY2025
FY2025 Actual
$138.1M
Prior year
Planned work

What the FY2027 request buys

Verbatim from the R-2A exhibit for project 64S444 of PE 1206458SF. 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

Complete: - Development of customized antennas needed for the most challenging platforms. - Integration and flight test on prioritized aircraft. - Ground and flight tests of various combinations of multi-constellation radios with multi-band antennas. - Inclusion of additional constellation links, integrated into Hybrid SATCOM Terminals, for air and ground platforms. - Networking and interoperability tests with DAF Battle Network - NSA certification of cryptographic unit. Continue: - Development of second-generation antenna for tactical fighter

FY2026 to FY2027 change

FY 2027 funding decreased by $188.973 million due to completion of antennas for all key aircraft and completion of modem/antenna testing, while remaining fielding activities will transition to PAE-C3BM.

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

Continue: - Development of customized antennas needed for the most challenging platforms. - Integration on initial test platforms. - Ground and flight testing with emerging satellite constellations. - Networking and interoperability tests with DAF Battle Network. - Flight worthiness for initial platforms. Complete: - Integration assessments on all platforms. - Development of prototypes for the Hybrid SATCOM Terminals that can be integrated on air and ground platforms. - Complete flight test of dual-band, LEO-GEO SATCOM on tactical fighter

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.

501001502000138.1FY25ACTUAL209.5FY26ENACTED20.5FY27REQUEST
Actual Enacted Request
Fiscal YearEstimate TypeAmount ($M)
FY2025Actual138.1
FY2026Enacted209.5
FY2027Request20.5

This activity is 100% of project 64S444's FY2027 request and 8.5% of PE 1206458SF'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

1 activity in project 64S444

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 project page.

Experimentation Space — this activity$20.5M ▼ 90%
Source
FY2027 Department of the Air Force RDT&E Budget Justification · Exhibit R-2A · PE 1206458SF, project 64S444 (President's Budget PB2027). Congressional marks are recorded on the program element, never on an activity.
Machine access
Markdown twin /programs/1206458SF/64S444/a0.md · MCP mcp.hitchintel.combudget_get_activity