EDF 2026 research call: autonomous and automatic air-to-air refuelling (EDF-2026-RA-AIR-A4R)

Scope:
Air-to-air refuelling enhances military operations by enabling long-range missions. Refuelling currently requires manual coordination between tanker operators and receiving pilots, which is complex and labour-intensive. Automated air-to-air refuelling solutions are expected to reduce workload and increase safety for both crews, while also being essential for future unmanned aerial systems.
The objective of this topic is to explore the development of sensor systems, in particular hardware and sensor fusion, to enable accurate relative navigation between tanker, receiver and refuelling systems, even in adverse conditions. In addition, enhanced optical sensors, advanced image processing, flight control algorithms and pilot assistance interfaces will play a crucial role in improving the docking and refuelling process, increasing safety and time efficiency.
This topic contributes to the STEP objectives as defined in the STEP Regulation in the target investment area of defence technologies.
Targeted types of activities:
Integrating knowledge, studies and design, not excluding upstream activities eligible for research actions.
Indicative budget:
EUR 20 000 000 for this topic under the EDF-2026-RA call.
Indicative number of proposals to be funded:
Several proposals may be funded for this topic.

Conditions:
Conditions
1. Admissibility Conditions: Proposal page limit and layout
described in section 5 of the
call document
.
Proposal page limits and layout:
described in Part B of the Application Form available in the Submission System.
2. Eligible Countries
described in section 6 of the
call document
.
3. Other Eligible Conditions
described in section 6 of the
call document
.
4. Financial and operational capacity and exclusion
described in section 7 of the
call document
.
5a. Evaluation and award: Submission and evaluation processes
described section 8 of the
call document
and the
Online Manual
.
5b. Evaluation and award: Award criteria, scoring and thresholds
described in section 9 of the
call document
.
5c. Evaluation and award: Indicative timeline for evaluation and grant agreement
described in section 4 of the
call document
.
6. Legal and financial set-up of the grants
described in section 10 of the
call document
.
Call document and annexes:
Call document
Application form templates
Standard application form (EDF)
— the application form specific to this call is available in the Submission System
Detailed budget table (EDF RA)
Participant information (EDF)
List of infrastructure, facilities, assets and resources (EDF)
Actual indirect cost methodology declaration (EDF)
Ownership control declaration
Ownership control guarantee
PRS declaration (EDF)
Model Grant Agreements (MGA)
EDF, ASAP and EDIRPA MGA
Additional documents:
EDF Annual Work Programme
EDF Regulation 2021/697
EDF Programme Security Instruction (PSI)
Guidelines on FSTP implementation - WP2026
EU Financial Regulation 2024/2509
Rules for Legal Entity Validation, LEAR Appointment and Financial Capacity Assessment
EU Grants AGA — Annotated Model Grant Agreement
Funding & Tenders Portal Online Manual
Funding & Tenders Portal Terms and Conditions
Funding & Tenders Portal Privacy Statement