# Project 640016 — On Orbit Servicing, Mobility, and Logistics (OOSML)

**Program element:** 1203955SF — Space Access, Mobility & Logistics (SAML)  
**Project:** 640016  
**Component:** U.S. Space Force  
**Appropriation:** 3620F — RDT&E, Space Force  
**Budget Activity:** 4 — Advanced Component Development & Prototypes  
**Vintage:** President's Budget PB2027  
**Canonical URL:** https://hitchintel.com/programs/1203955SF/640016  
**Parent:** https://hitchintel.com/programs/1203955SF

## Summary

Project 640016 — On Orbit Servicing, Mobility, and Logistics (OOSML) requests $0.0M in FY2027, 0.0% of the $9.7M requested for program element 1203955SF, down 100% on FY2026. 1 R-2A activity decomposes the request.

## Funding profile

| Fiscal Year | Estimate Type | Amount ($M) |
|---|---|---|
| FY2025 | Actual | 19.3 |
| FY2026 | Enacted | 10.0 |
| FY2027 | Request | 0.0 |
| FY2028 | Outyear | 0.0 |
| FY2029 | Outyear | 0.0 |
| FY2030 | Outyear | 0.0 |
| FY2031 | Outyear | 0.0 |

> Estimate types are not summed. This project is one leaf of PE 1203955SF; the PE total is the sum of its projects, never added to them.

## What project 640016 buys

On-Orbit Servicing, Mobility, and Logistics advances neglected support capabilities in the space domain, ensuring asset availability to the warfighter. The initial thrust for On-Orbit SML is a service architecture ensuring prepared systems can replenish energy, as needed, to maintain operator proficiency and sustained readiness in a contested domain with flexibility to meet the increased challenges of conflict. This capability provides USSPACECOM the requisite supply chain to de-constrain operations currently limited by a fixed fuel budget, enabling movement and maneuver Dynamic Space Operations for critical National Security Space assets. Advancing an on-orbit refueling architecture enables a prepared architecture for subsequent On-Orbit SML lines of effort including mobility, relocation, repair and disposal. Additionally, as refueling requires the application of Rendezvous, Proximity Operations and Docking (RPOD) technology, the techniques, tactics and procedures (TTPs) attained through refueling simplify and accelerate subsequent capabilities. In tandem with efforts to qualify and onboard refueling onto a "services contract” for ongoing propellent replenishment missions, On-Orbit SML will maintain connectivity to the burgeoning commercial market to capitalize on industry advancement to qualify and onboard additional on-orbit capabilities as they mature. As an "anchor tenant” this may include providing last-mile development funding for government purpose modifications, demonstrations, landscape assessments and architecture development. Due to client variations in mission, orbit, configuration and security, On-Orbit SML services will not be a "one size fits all” approach and will require an enduring programmatic and systems engineering investment to meet customer requirements.

**R-3 lines of work:** Product Development; Management Services.

## Activities (R-2A) — 1

| Activity | FY2025 | FY2026 | FY2027 | Move | Page |
|---|---|---|---|---|---|
| On-Orbit Servicing, Mobility & Logistics (SML) | 15.4 | 0.0 | 0.0 | — | — |

> Activities carry the prior, current and budget year only — no five-year plan. In the request year they partition this project exactly; in earlier years they can under-cover it.

## What is NOT on this page

Congressional marks, the R-2 mission description and acquisition strategy, the industry vs government split of the whole request, and related program elements are recorded at **program-element** grain — an NDAA mark lands on a PE, never on a project. They are at https://hitchintel.com/programs/1203955SF.

## Source & machine access

- **Source:** FY2027 Department of the Air Force RDT&E Budget Justification, Exhibits R-2/R-2A/R-3, PE 1203955SF project 640016 (PB PB2027).
- **MCP:** `mcp.hitchintel.com` — `budget_get_program_element(pe="1203955SF")`.

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