ESA Shelves Ariane 6 Block 3 After €158 Million Funding Gap
Updated
Updated · European Spaceflight · Aug 20
ESA Shelves Ariane 6 Block 3 After €158 Million Funding Gap
2 articles · Updated · European Spaceflight · Aug 20
Summary
ESA confirmed Ariane 6 Block 3 is no longer being considered, and said no development work is underway on the ICARUS lightweight upper stage tied to that upgrade.
A €304.4 million Ariane 6 adaptations request at the 2025 ministerial meeting won only €145.94 million, leaving a €158.46 million shortfall, though ESA said the decision reflected no current programme need or justification.
Near-term upgrades now center on P160C boosters, a lighter Vulcain Aft Bay and the Astris orbital transfer vehicle, which ESA expects to join the Ariane 6 ecosystem around 2029.
The shift already forced a proposed Enceladus mission study to drop plans based on the more capable Ariane 64 Block 3, while ESA left open longer-term changes if future missions or human spaceflight requirements emerge.