# Air Breathing Propulsion Integration and Demonstration

**R-2A activity** of project 634920 — Aerospace Systems Integration & Demonstration  
**Program element:** 0603211F — Aerospace Technology Dev/Demo  
**Component:** U.S. Air Force · **Budget Activity:** 3  
**Vintage:** President's Budget PB2027  
**Canonical URL:** https://hitchintel.com/programs/0603211F/634920/a1  
**Parent:** https://hitchintel.com/programs/0603211F/634920

> **NEW START.** $30.0M requested in FY2027 with no prior-year and no current-year funding.

## Summary

This activity requests $30.0M in FY2027, 12% of project 634920 — a new start with no prior-year and no current-year money. The R-2A exhibit describes it across FY2026–FY2027, including what the FY2027 money is planned to buy.

## What the FY2027 request buys

**FY2027 planned work.** Continue new engine technologies to deliver reduced takeoff length, increased range, loiter, combat maneuverability, and lower cost for affordable unmanned aerial systems in contested environments. - Activities include design and development of augmentor test rigs. Complete advanced propulsion air frame integration experiments to enable embedded propulsion systems for affordable mass via embedded turbine engine propulsion. - Activities include completion of model Based Systems Engineering for capturing advanced augmentor impacts to embedded fans and advanced augmentor preliminary design review. Commence augmentor technology development and demonstrations to reduce takeoff length and increase combat maneuverability. Activities include: - Manufacturing of special test equipment and fixtures, buying and installing instrumentation to measure effectiveness, and assembling augmentor technology. - Testing the augmentor technologies at a variety of aircraft flight conditions including takeoff, climb, cruise, and full maximum throttle.

**FY2026 to FY2027 change.** FY 2027 funding increased by $29.952 million due to the transfer of the Air Breathing Propulsion Integration and Demonstration effort and associated funding within this Program Element from Project 634921 / Aircraft Propulsion Subsystems Integration to Project 634920 / Flight Vehicle Tech Integration (now called Aerospace Systems Integration and Demonstration). However, overall funding for the Air Breathing Propulsion Integration and Demonstration increased from FY 2026 by $10.000 million due to increased technology integration and demonstration in combat maneuverability.

## Before the request year

**FY2026 plans — current year.** In FY 2025 and FY2026 the funding and work was executed in Project 634921 Aircraft Propulsion Subsystems Int. FY 2025 funding was $20.200 million and FY 2026 funding is $19.952 million.

## Funding

| Fiscal Year | Estimate Type | Amount ($M) |
|---|---|---|
| FY2025 | Actual | 0.0 |
| FY2026 | Enacted | 0.0 |
| FY2027 | Request | 30.0 |

> Prior, current and budget year only — an R-2A activity carries no five-year plan. It sums exactly into its project in the request year and not necessarily in any other.

## Other activities in project 634920

- [High-Speed Propulsion Integration and Demonstration](https://hitchintel.com/programs/0603211F/634920/a3) — FY2027 94.4
- [High-Speed Systems Integration and Demonstration](https://hitchintel.com/programs/0603211F/634920/a2) — FY2027 80.1
- [Missile Propulsion Integration and Demonstration](https://hitchintel.com/programs/0603211F/634920/a6) — FY2027 25.8
- [Autonomous Systems Control Integration and Demonstration](https://hitchintel.com/programs/0603211F/634920/a4) — FY2027 12.1
- [Power &Thermal Systems Integration and Demonstration](https://hitchintel.com/programs/0603211F/634920/a5) — FY2027 10.3
- Aerospace Vehicle Integration and Demonstration — FY2027 7.5

## Source & machine access

- **Source:** FY2027 Department of the Air Force RDT&E Budget Justification, Exhibit R-2A, PE 0603211F project 634920 (PB PB2027). Narrative is the government's own text.
- **No marks, no contractors at this grain** — congressional marks land on the program element and R-3 performers on the project.
- **MCP:** `mcp.hitchintel.com` — `budget_get_activity`.

*HitchAI is an independent intelligence service, not affiliated with the U.S. Department of Defense. Budget figures are requests/estimates, not obligations.*