RDT&E Program Element · President's Budget PB2027

Hypersonic Attack Cruise Missile (HACM)

PE 0604183F·U.S. Air Force·Approp. 3600 — RDT&E·BA4 — Advanced Component Development & Prototypes
FY2027 Request
$806.1M
⚑ Contested — House approps cuts 8.0%
HitchAI read

U.S. Air Force requests $806.1M in FY2027 (down from a FY2026 peak), before stepping down 81% across the five-year plan. In the FY2027 defense authorization, the House funded it in full; the Senate funded it in full; House appropriators cut 8.0% (to $741.6M). RTX / Raytheon leads the industry work.

FY2027 Request
$806.1M
▼ 2.6% vs FY2026
House approps mark
$741.6M
▼ $64.5M vs request
FY2026 Enacted
$828.1M
In law

For fiscal year 2027, the U.S. Air Force is requesting $806.1M for Hypersonic Attack Cruise Missile (HACM) under RDT&E program element 0604183F, down 2.6% from FY2026. In the FY2027 defense authorization, House approps moved to cut it to $741.6M.

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.

2505007500452.8FY25ACTUAL828.1FY26ENACTED806.1FY27REQUEST514.0FY28195.5FY29171.1FY30155.0FY31HOUSE APPROPS
Actual Enacted Request Outyear (FYDP) House approps mark
Fiscal YearEstimate TypeAmount ($M)
FY2025Actual452.8
FY2026Enacted828.1
FY2027Request806.1
FY2028Outyear514.0
FY2029Outyear195.5
FY2030Outyear171.1
FY2031Outyear155.0
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 0604183F

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 -3% overall, which can hide much larger swings below.

Project 644183

Hypersonic Attack Cruise Missile (HACM)

$806.1MFY2027 request ▼ 3%
FY2025 actual$452.8M
FY2026 enacted$828.1M
FY2027 request$806.1M
Product DevelopmentSupportTest and EvaluationManagement Services

Hypersonic Attack Cruise Missile (HACM) is an air-launched, air breathing hypersonic weapon capable of integration on fighters and bombers that enables the U.S. to hold fixed, high value, time-sensitive targets at risk in contested environments from standoff distances. The program leverages investment from the Southern Cross Integrated Flight Research Experiment (SCIFiRE), a bi-lateral U.S./Australian air-breathing hypersonic cruise missile prototyping effort. The HACM program will integrate advanced technologies and mature designs into an All-Up Round (AUR) prototype that will demonstrate a field-able long range prompt strike capability. HACM will design, develop, manufacture, and test prototype vehicles to inform future HACM acquisition decisions. HACM will mature hypersonic technologies and processes by leveraging subsystem integration, infrastructure and testing advancements, Digital Engineering (DE), Weapons Open Systems Architecture (WOSA), Modeling and Simulation (M&S) to quickly integrate future capabilities at reduced cost. Implements Digital Acquisition tenants of Open, Agile, and Digital; builds and establishes industrial base innovation around the program's enterprise for modularity and adaptability for the life cycle of the weapons system. Leverages common component development, in collaboration with other weapon systems, to reduce redundant costs between systems with similar subsystems requirements. Invests in analytical, data management, digital environments, networks, facilities, and security infrastructure upgrades supporting development of this program's capabilities, while leveraging Department of War (DoW) and Department of the Air Force (DAF) enterprise Information Technology (IT) solutions. Expands program office staff, facilities, and security infrastructure to support the required classification levels for this program's activities. Engages with DoW, DAF, and industry stakeholders to refine threat analysis, refine inventory requirements, and plan upgrade requirements. Capitalizes on and incorporates successful laboratory research and development efforts applicable to this program's capability.

Accomplishments / planned programs (R-2A) — prior, current and budget year only
FY2025 actual$426.0M
FY2026 enacted$764.1M
FY2027 request$717.2M

Purchase hardware and validate the HACM design to continue ground and flight test activities. Continue to purchase long-lead flight test asset hardware and make investment in manufacturing readiness and operational suitability improvements.

Read the FY2027 plan →
FY2025 actual$26.8M
FY2026 enacted$64.0M
FY2027 request$88.9M

Effort will continue subsystem qualification testing and the integration, assembly, test, and checkout of the All-Up Round system. Efforts will also include flight testing of HACM prototypes and other risk data.

Read the FY2027 plan →
The whole program

HACM is funded on 2 lines across 2 appropriations

This page shows $806.1M of HACM, 67% of the program's $1.21B FY2027 request. The rest is appropriated elsewhere.

Also funded hereTypeComponentFY2027 $M
Hypersonic Attack Cruise MissileProcurementAir Force404.0
HACM totalAir Force1,210.1

Lines whose title names the program. 4 further lines only mention HACM in their justification text — those fund something else and are deliberately excluded from the total.

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
$806.1M
House NDAA (HASC)HASC
$806.1M full · +$0
Senate NDAA (SASC)SASC
$806.1M full · +$0
House Approps (HAC-D)HAC_D
$741.6M −$64.5M · −8.0%
▲ $64.5M chamber gap — unresolved as of 2026-07-27. These are FY2027 authorization marks (NDAA); appropriations and the conference agreement may differ.
Who's building it

Where the FY2027 request goes

Performers named in the R-3 exhibit, resolved into industry, government-lab, and unspecified shares. Budget-justification contract funding, not obligations.

RTX / Raytheon
$412.0M · 51%
HACM Prime Contractor and pre-planned product improvement · CPFF
Where FY2027 funding flowsShare$M
Industry primes51%412.0
Other / unspecified49%394.1
FY2027 request100%806.1
See RTX / Raytheon's full federal contract ledger members
Program detail

Mission & acquisition strategy

Hypersonic Attack Cruise Missile (HACM) is an air-launched, air breathing hypersonic weapon capable of integration on fighters and bombers that enables the U.S. to hold fixed, high value, time-sensitive targets at risk in contested environments from standoff distances. The program leverages investment from the Southern Cross Integrated Flight Research Experiment (SCIFiRE), a bi-lateral U.S./Australian air-breathing hypersonic cruise missile prototyping effort. The HACM program will integrate advanced technologies and mature designs into an All-Up Round (AUR) prototype that will demonstrate a field-able long range prompt strike capability.

The program leverages the SCIFiRE investment, a bi-lateral U.S. / Australia effort which matures air-breathing cruise missile technology. Through SCIFiRE, HACM leverages efforts from the DARPA Air Force Hypersonic Air-breathing Weapon Concept (HAWC). The HACM prototype will demonstrate a weapon concept to be fielded as a long range prompt strike capability. Includes scope to develop/test/demonstrate prototype weapon through Digital Model-Based System Engineering (MBSE) process, implementing WOSA and Agile Software Development. The program will prioritize integration on the F-15E platform to meet US warfighter needs.

Project 644183 — Hypersonic Attack Cruise Missile (HACM)
  • Product Development
  • Support
  • Test and Evaluation
  • Management Services
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Ask this program element

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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Questions this page can answer
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?How is the FY2027 request split between industry and government performers?In plain terms, what is this program element for and how is it being acquired?

This page carries the budget justification and the NDAA marks — nothing else. For what RTX / Raytheon has actually been obligated, the ledger is at hitchintel.com/vendors; for live solicitations, hitchintel.com/opportunities. Both are member surfaces.

Provenance

Cite this page

Sources
FY2027 Department of the Air Force RDT&E Budget Justification · Exhibits R-2 / R-3 · PE 0604183F (President's Budget PB2027) — and FY2027 NDAA committee marks, as tracked 2026-07-27.
Suggested citation
HitchAI, "Hypersonic Attack Cruise Missile (HACM) (PE 0604183F)," federal budget intelligence, PB2027 vintage. hitchintel.com/programs/0604183F
Machine access
Markdown twin /programs/0604183F.md · MCP mcp.hitchintel.combudget_get_program_element, budget_get_cong_marks