Neutron's first launch slips again amid trouble with carbon composites

Key Points:

• Rocket Lab announced a delay in the first flight of its Neutron launch vehicle until 2027 due to manufacturing issues with the rocket’s carbon composite propellant tank domes, specifically voids found between carbon fiber layers.
• The manufacturing defect was linked to a recent design change aimed at strengthening the rocket after a propellant tank rupture in January, leading to thicker sections where voids formed during the curing process.
• Rocket Lab has modified the manufacturing process to address the problem, with a newly produced aft dome passing inspection, but the investigation and resolution have pushed the launch timeline back from the original 2024 target.
• Neutron is a medium-lift, reusable rocket designed to compete for a broader range of launch contracts, including US military and satellite megaconstellation operators, with a lift capability of nearly 29,000 pounds to low-Earth orbit.
• Despite the delay, Rocket Lab emphasizes a focus on quality and reliability, stating it prefers to resolve issues on the ground rather than risk failure during the first flight, while facing competition from other companies developing medium-lift rockets.