Printed from https://fiscalreceipts.com/program/0604010F/ — built September 26, 2026. Every figure is citation-backed; see the page online for per-number provenance.
Next Generation Adaptive Propulsion
Budget figures
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 | $573.8M |
| FY25 | $507.3M |
| FY26 | $330.3M |
All series figures: R-1 TOA · 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 | FY24 | FY25 | FY26 |
|---|---|---|---|
| Actuals | $573.8M | ||
| Enacted | – | $507.3M | |
| Request | – | – | $330.3M |
blank = series not published for this year; – = absent from that edition.
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 — Next Generation Adaptive Propulsion (NGAP)
The Next Generation Adaptive Propulsion (NGAP) program builds upon advanced materials, technologies and manufacturing processes matured under the Adaptive Engine Transition Program (which ended in FY24) to enhance adaptive propulsion system performance and size scalability key to enabling future aircraft capabilities. Embedded adaptive propulsion systems combine the fuel efficiency of high-bypass turbofan engines used by commercial airlines with the performance demanded of military fighter engines with augmenters. Increased fuel efficiency reduces energy demand and aerial tanker dependency while increasing platform range and or time on station. During peacetime, these benefits translate to reduced aerial tanker dependency during exercises and a choice between increased aircrew readiness or cost savings due to the less fuel needed. NGAP prototyping will validate the performance and maturity of its enabling advanced technologies, platform agnostic engine architectures and designs, and manufacturing processes through prototype testing. NGAP will also drive digital transformation of the propulsion industrial base to reduce future integration risks while shortening development timelines. Prior to FY 2024, the NGAP program was reported in PE 0604004F, Advanced Engine Development, Project 643608, Advanced Engine Development. 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 $5.669 million was expended for civilian pay expenses in this program element, and in FY 2025 $7.401 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.
Justification
Accomplishments & Planned Programs (1)
Next Generational Adaptive Propulsion (NGAP)
The NGAP program is designing multiple adaptive engine prototypes and will complete component rig assessments; fabricate, assemble, test and evaluate prototype(s); characterize materials, and inform digital improvements to model-based manufacturing processes. Prototype engine assessments at sea-level, altitude, and across multiple power settings will provide data to quantify the capabilities, validate engineering models as well as the maturity of new component technologies, and reduce risk in areas such as reliability and supportability. The program will also demonstrate the scalability of an embedded adaptive propulsion system with the versatility for an augmented future fighter or non-augmented for other mission aircraft operating across various mission threads.
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 | $573.8M |
| Research, Development, Test and Evaluation, Air Force | F | FY25 Enacted | $507.3M |
| Research, Development, Test and Evaluation, Air Force | F | FY25 Total | $507.3M |
| Research, Development, Test and Evaluation, Air Force | F | FY26 Disc. Request | $330.3M |
| Research, Development, Test and Evaluation, Air Force | F | FY26 Total | $330.3M |
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 | $573.8M | $507.3M | $330.3M | $330.3M |
| 640864: Next Generation Adaptive Propulsion (NGAP) | $0 | $573.8M | $507.3M | $330.3M | $330.3M |
Follow the dollar
No follow-the-dollar view — none of this program's high-confidence awards records a positive obligation at any place of performance (flows cover 312 of 1,938 programs). why coverage is partial? →
Related awards
Award linkage is shown for 32 of 200 profiled companies — high- and medium-confidence USAspending matches, each row labeled; medium is the weaker evidence. why partial award coverage? →
| Recipient | PIID | Confidence |
|---|---|---|
| GENERAL ELECTRIC COMPANY | FA862622D0010 | high |
| RTX CORPORATION | FA862622D0002 | high |
Contractor concentration
No concentration index is published for this line. This line's high-confidence links do not clear the floor for a published concentration index — at least 3 awards across 2 contractor families holding positive obligations, with positive net linked dollars. An index below that floor is a fact about the sample, not about the market. Whatever further links this line carries are medium-confidence, and what each medium evidence path does and does not establish is set out in the methodology. Both bases are in the downloadable warehouse.
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 Next Generation Adaptive Propulsion. 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 · J542
Complete workbook · unchanged saved copy. Saves as PB2026_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