China appears to be developing 7-meter-diameter reusable rockets

2026-06-23 · Source: SpaceNews · Field: Science & Research — Engineering & Applied Sciences, Space Science & Astronomy · Depth: Novice, short

Summary

China is developing 7-meter-diameter reusable rockets, indicated by a state-funded tender for tank tooling, a delivered stainless steel forging, and expanding launch pad planning. This new intermediate rocket, similar to Blue Origin's 7-meter New Glenn, aims to enhance launch cadence and payload capacity for megaconstellation deployment and large space infrastructure. Evidence includes a China Aerospace Science and Technology Corporation (CASC) tender for a 7-meter-class tank-dome welding system and a 7.5-meter-class ultra-large-diameter high-strength ring made of S-03L martensitic stainless steel. This aligns with a May 2023 recommendation from CASC's China Academy of Launch Vehicle Technology (CALT) for 5, 7, and 10-meter rockets, targeting low Earth orbit (LEO) payloads from 15,000 kg to 100,000 kg. The 7-meter class, potentially using 25 YF-209 engines for 25,000 kg or 13 larger engines for 50,000 kg, is migrating to stainless steel. Launch infrastructure at Hainan Commercial Space Launch Site is also expanding to accommodate these larger vehicles.

Key takeaway

For aerospace industry analysts tracking global space capabilities, China's confirmed development of 7-meter-diameter reusable rockets signals a significant shift. You should anticipate increased competition in heavy-lift launch services and megaconstellation deployment. This move suggests China's rapid iteration strategy for large stainless steel structures is progressing, potentially impacting future material and manufacturing trends. Monitor CASC and SAST announcements for specific vehicle designations and operational timelines.

Key insights

China is actively pursuing a 7-meter-diameter reusable rocket program to significantly boost its space access and payload capabilities.

Principles

• Large-diameter rockets enhance payload capacity.
• Reusability boosts launch cadence.
• Stainless steel is replacing aluminum for large structures.

Method

China's development strategy involves "small steps, rapid iteration" for large-diameter stainless structures, supported by tenders, forging firm deliveries, and launch site expansions.

In practice

• Monitor CASC and SAST tenders for new rocket details.
• Observe Hainan launch site expansions for capacity growth.
• Evaluate stainless steel for future large-scale aerospace structures.

Topics

• Reusable Rockets
• China Space Program
• Large-Diameter Launchers
• Stainless Steel Structures
• Methalox Engines
• Space Infrastructure

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Editorial summary, takeaway, and curation by AIssential. Original article published by SpaceNews.