Printed from https://fiscalreceipts.com/program/0604004F/ — built September 26, 2026. Every figure is citation-backed; see the page online for per-number provenance.
Advanced Engine Development
Budget figures
No FY2026 R-1/P-1 request line for this program element. The FY2026 President's Budget request workbook carries no FY2026 line for it; its last workbook figure is FY2025. The PB2026 J-book detail below does carry an FY2026 row for this line, recorded as zero. A workbook blank and a documented zero are different records, and this page shows both. An absent line is not by itself an ending — PB2026 renumbered program elements at scale across the services and defense agencies, so this work may continue under a different number. No successor is linked for this line: this site's program-lineage layer holds no keyed edge pointing forward from here. That is an absence in this site's lineage layer, not a finding about the program: if the J-book narrative on this page describes a realignment, it is quoted below in the document's own words, and this note does not restate it.
FY2026 award data is a partial year — USAspending reports awards on a rolling basis, and this corpus runs through 2026-09-04. why partial FY2026 data? →
Budget trajectory
| Fiscal year | Amount |
|---|---|
| FY24 | $270.0MR-1 TOA · PB2026 |
| FY25 | $100.0MR-1 TOA · PB2026 |
| FY26 | $0J-book detail · PB2026 |
Decade view
P-1/R-1 workbook TOA basis, shown compact in $B/$M (the workbook records USD thousands); each figure cites its own President's Budget edition
The vertical scale does not start at zero: the baseline sits just below this program’s smallest year, so a low point on this line is not a small amount. Read the shape for direction and the grid below for the figures.
● actuals (line) · ○ enacted · ◇ request — gaps are editions the program is absent from, never interpolated.
| Series | FY18 | FY19 | FY20 | FY21 | FY22 | FY23 | FY24 | FY25 |
|---|---|---|---|---|---|---|---|---|
| Actuals | $0 | $696.1M | $647.9M | $642.6M | $562.7M | $212.6M | $270.0M | |
| Enacted | – | $720.4M | $671.4M | $665.3M | $583.7M | $220.4M | $595.4M | $100.0M |
| Request | – | – | $878.4M | $636.5M | $123.7M | $353.7M | $595.4M | $562.3M |
blank = series not published for this year; – = absent from that edition.
Asked vs spent: the PB2022 book requested $123.7M for FY2022; the PB2024 book reported $562.7M as actual total obligation authority — $439.0M above the request. 562.7 − 123.7 = 439.0 USD millions — the compact figures above are rounded for reading.
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 — Advanced Engine Development
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 and integration efforts. Prototyping and assessments of the prototypes at sea-level, simulated altitudes, and durability assessments across multiple power settings provides data to validate system performance, calibrate engineering models, and ensure appropriate manufacturing and technology readiness for future propulsion system development and platform integration as well as potential insertion into already fielded propulsion systems. This program element may include necessary civilian pay expenses required to manage, execute, and deliver weapon system capability. The use of such program funds would be in addition to the civilian pay expenses budgeted in program element 0605829F, 0605831F, 0605833F, or 0605898F. In FY 2024 $4.971 million was expended for civilian pay expenses in this program element, and in FY 2025 $0.0 million is forecasted for civilian pay expenses in this program element. This effort is in Budget Activity 4, Advanced Component Development and Prototypes (ACD&P), because efforts are necessary to evaluate integrated technologies, representative modes or prototype systems in a high fidelity and realistic operating environment.
Mission — Advanced Engine Technologies
Advanced Engine Technology activities expand industrial base knowledge and skills enabling future advanced propulsion system architectures and designs; propulsion systems include the inlet, engine and nozzle. Activities include: - Addressing manufacturing producibility, affordability, quality, risks and issues throughout the development process to improve product quality; enhance manufacturing processes; and strengthen the supply chain. - Maturing alloy, coatings, and composites to meet next generation component requirements through composite trials and component testing. - Developing Model Based Inspections techniques and increasing digital collaboration between Government and Industry to expand capability and capacity for future application. - Expanding use of Model Based Systems Engineering and incorporating learnings into advanced combat engine model development.
Mission — Advanced Engine Dev
Advanced Engine Development (AED) activities include all efforts necessary to develop and evaluate all thrust classes of advanced propulsion system architectures, designs, enabling advanced materials, component technologies, and manufacturing processes in realistic environments. 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. Prototyping and assessments of the prototypes at sea-level, simulated altitudes, and durability assessments across multiple power settings provide data to validate performance, calibrate engineering models, and ensure appropriate manufacturing and technology readiness for future propulsion system development and platform integration as well as potential insertion into already fielded propulsion systems. This project advances propulsion technologies from Advanced Technology Development (ATD) into Engineering and Manufacturing Development (EMD) when appropriate; some propulsion technologies may transfer directly from ATD into EMD.
Justification
No accomplishments or planned-program narratives in this line's J-book detail — some exhibits carry figures without per-project prose.
Budget line items(workbook-cited)
P-1/R-1 workbook Total Obligation Authority basis (USD thousands) · PB2026.
Exhibit R-1
| Account | Org | Type | Amount |
|---|---|---|---|
| Research, Development, Test and Evaluation, Air Force | F | FY24 Actuals | $270.0M |
| Research, Development, Test and Evaluation, Air Force | F | FY25 Enacted | $100.0M |
| Research, Development, Test and Evaluation, Air Force | F | FY25 Total | $100.0M |
Budget Details(R-2/P-40 facts)
J-book detail basis (R-2/P-40, USD millions) · PB2026 — a different accounting basis from the P-1/R-1 workbook TOA above; where the two disagree, the reconciliation strip under Budget figures shows both.
Wider than this screen — swipe the table sideways for the remaining fiscal-year columns.
| Project | All Prior Years | FY24 Actuals | FY25 Total | FY26 Base | FY26 Request |
|---|---|---|---|---|---|
| Program Element | $0 | $270.0M | $100.0M | $0 | $0 |
| 640020: Advanced Engine Technologies | $0 | $270.0M | $0 | $0 | $0 |
| 643608: Advanced Engine Dev | $0 | $0 | $100.0M | $0 | $0 |
Follow the dollar
No follow-the-dollar view — this program's awards haven't been crosswalked at high confidence (flows cover 312 of 1,938 programs). why coverage is partial? →
Awards
No awards are linked to this program element at high or medium 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.
Oversight
Department-level designation (not specific to this program)
GAO lists 5 high-risk areas for DOD as a whole. That designation covers the department, not Advanced Engine Development. No program-specific GAO finding for this line is in the ingested data. See the DOD oversight record.
Program dossier
No research dossier for this program — dossiers cover 50 of 1,938 programs, the largest fully J-book-detailed lines by FY2026 requested dollars. why no dossier here? →
Primary sources
Open any budget figure for its exact receipt. Verified line items lead with the highlighted government PDF; original spreadsheets download with their budget edition and exhibit in the filename.
Budget totals · TOA sources
FY2026 Department of Defense Budget: RDT&E Programs (R-1) · comptroller.war.gov
Exhibit R-1 · J538
Complete workbook · unchanged saved copy. Saves as PB2026_DoD_R-1_Research-Development-Test-Evaluation.xlsx.
FY2020 Department of Defense Budget: RDT&E Programs (R-1) · comptroller.war.gov
Exhibit R-1 · J547
Complete workbook · unchanged saved copy. Saves as PB2020_DoD_R-1_Research-Development-Test-Evaluation.xlsx.
FY2021 Department of Defense Budget: RDT&E Programs (R-1) · comptroller.war.gov
Exhibit R-1 · J568
Complete workbook · unchanged saved copy. Saves as PB2021_DoD_R-1_Research-Development-Test-Evaluation.xlsx.
FY2022 Department of Defense Budget: RDT&E Programs (R-1) · comptroller.war.gov
Exhibit R-1 · J529
Complete workbook · unchanged saved copy. Saves as PB2022_DoD_R-1_Research-Development-Test-Evaluation.xlsx.
FY2023 Department of Defense Budget: RDT&E Programs (R-1) · comptroller.war.gov
Exhibit R-1 · J521
Complete workbook · unchanged saved copy. Saves as PB2023_DoD_R-1_Research-Development-Test-Evaluation.xlsx.
FY2024 Department of Defense Budget: RDT&E Programs (R-1) · comptroller.war.gov
Exhibit R-1 · J512
Complete workbook · unchanged saved copy. Saves as PB2024_DoD_R-1_Research-Development-Test-Evaluation.xlsx.
FY2025 Department of Defense Budget: RDT&E Programs (R-1) · comptroller.war.gov
Exhibit R-1 · J520
Complete workbook · unchanged saved copy. Saves as PB2025_DoD_R-1_Research-Development-Test-Evaluation.xlsx.
Detailed budget justification
The related TOA spreadsheets above use a different accounting basis from R-2/P-40 detail. Their amounts are not assumed to match these detailed sources.
FY2026 Air Force Research and Development Test and Evaluation, Vol. I · www.saffm.hq.af.mil
PDF page 12