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RDT&E Program Element · President's Budget PB2027

Advanced Engine Development

PE 0604004F·U.S. Air Force·Approp. 3600 — RDT&E·BA4 — Advanced Component Development & Prototypes
FY2027 Request
$0.0M
⚑ Contested — House approps adds $20.0M
HitchAI read

U.S. Air Force funding falls 100% to a $0.0M request in FY2027. In the FY2027 defense authorization, House appropriators added $20.0M (to $20.0M).

FY2027 Request
$0.0M
▼ 100% vs FY2026
House approps mark
$20.0M
▼ $20.0M vs request
FY2026 Enacted
$25.0M
In law

For fiscal year 2027, the U.S. Air Force is requesting $0.0M for Advanced Engine Development under RDT&E program element 0604004F, down 100% from FY2026. In the FY2027 defense authorization, House approps moved to raise it to $20.0M.

Funding trajectory

Funding profile, FY2025–FY2031

Prior years are actuals, the budget year is the request, and the outyears are the FYDP plan. Estimate types are colored and never summed into one figure.

255075096.5FY25ACTUAL25.0FY26ENACTED0.0FY27REQUEST0.0FY280.0FY290.0FY300.0FY31
Actual Enacted Request Outyear (FYDP)
Fiscal YearEstimate TypeAmount ($M)
FY2025Actual96.5
FY2026Enacted25.0
FY2027Request0.0
FY2028Outyear0.0
FY2029Outyear0.0
FY2030Outyear0.0
FY2031Outyear0.0
Where it sits

Acquisition lifecycle

This program is funded in RDT&E Budget Activity 4 — Advanced Component Development & Prototypes.

Complete
Research
BA 1–2
Complete
Advanced Technology
BA 3
Current
Prototyping
BA 4
Later
Development & Fielding
BA 5–7
Inside the program element

1 project rolls up into PE 0604004F

Projects are the summable leaves — the PE total is their sum, never added to it. Program elements and projects carry the full five-year plan; activities stop at the budget year. This PE moves -100% overall, which can hide much larger swings below.

Project 643608

Advanced Engine Dev

$0.0MFY2027 request ▼ 100%
FY2025 actual$96.5M
FY2026 enacted$25.0M
FY2027 request$0.0M
Product Development

Advanced Engine Development (AED) activities include all efforts necessary to mature and validate transition readiness of advanced propulsion system architectures, designs, enabling advanced materials, component technologies, and manufacturing processes in realistic environments across all thrust classes of propulsion. Validated materials, architectures, designs, and manufacturing processes and techniques may advance for follow-on Engineering, Manufacturing and Development (EMD) and platform integration. Materials and component technologies may advance for insertion into fielded engines and or engines in production. AED also includes all efforts to define and evaluate modifications to commercial and military off-the-shelf propulsion systems for use in existing and future, aircraft and munitions.

Congressional action

The request is contested

Committee marks on the FY2027 request. Adds and cuts are reconciled in conference before they become law.

RequestPresident's Budget
$0.0M
House Approps (HAC-D)HAC_D
$20.0M +$20.0M
unresolved as of 2026-07-27. These are FY2027 authorization marks (NDAA); appropriations and the conference agreement may differ.
Program detail

Mission & acquisition strategy

The Advanced Engine Development (AED) Program includes all efforts necessary to develop and evaluate advanced propulsion system components and prototypes in realistic environments. The program also includes all efforts to define and evaluate required modifications to commercial and military off-the-shelf propulsion systems for use in existing and future aircraft and munitions. These activities enable maturation and risk reduction of advanced propulsion system architectures, designs, modifications, enabling materials and technologies, and manufacturing processes for follow-on Engineering, Manufacturing and Development (EMD) and platform integration efforts within this program.

Leverage the contractual scope, available contract ceiling and schedule efficiencies of existing Federal Acquisition Regulation (FAR) based contracts, Other Transactional Authority (OTA) agreements, and Broad Agency Announcements. The government agency responsible for managing this program is the Air Force Life Cycle Management Center, Propulsion Directorate, Wright-Patterson Air Force Base, Ohio.

Project 643608 — Advanced Engine Dev
  • Product Development
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Answers are generated from the figures on this page — the FY2027 justification exhibits and the marks tracked above — and nothing else is consulted. Confirm any figure against the cited exhibit before you use it externally.

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How does the FY2027 request compare with FY2026, and what does the five-year plan show?What did House approps do to this request, and what is still unresolved?In plain terms, what is this program element for and how is it being acquired?
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Provenance

Cite this page

Sources
FY2027 Department of the Air Force RDT&E Budget Justification · Exhibits R-2 / R-3 · PE 0604004F (President's Budget PB2027) — and FY2027 NDAA committee marks, as tracked 2026-07-27.
Suggested citation
HitchAI, "Advanced Engine Development (PE 0604004F)," federal budget intelligence, PB2027 vintage. hitchintel.com/programs/0604004F
Machine access
Markdown twin /programs/0604004F.md · MCP mcp.hitchintel.com → budget_get_program_element, budget_get_cong_marks