Long March 10B: China's Reusable Rocket Breakthrough

Long March 10B: China's Reusable Rocket Breakthrough

#GS-3 #Science & Technology #Space #Current Events #International #Reusable Rocket Technology

Why in News

  • China successfully achieved its first reusable rocket landing at the **Wenchang Commercial Space Launch Site**.
  • During this test, the **Long March 10B** booster made a precise sea-based recovery after stage separation.

About Long March 10B Rocket

  • The **Long March 10B** is an advanced, next-generation medium-to-heavy lift launch vehicle with a reusable first-stage booster.
  • It serves as a core pillar of China's modern space infrastructure, designed to lower space access costs through vertical descent and specialized sea retrieval.
  • State-owned **China Aerospace Science and Technology Corporation (CASC)** researched, developed, and launched this rocket.
  • The main goal of the **Long March 10B** program is to eliminate the high economic barriers of single-use rockets.

Key Technical Features

  • This vehicle can carry payloads of up to **16 metric tonnes into Low Earth Orbit (LEO)**.
  • After separation, nitrogen thrusters flip the booster while grid fins guide and stabilize it during atmospheric descent.
  • Real-time engine throttling generates counter-thrust, which slows the descending booster for a controlled hover above the recovery platform.
  • Instead of landing legs, the booster uses specialized hooks to catch a suspended wire net on an automated vessel.
  • After capture, safety cables and locking mechanisms secure the booster against swinging to protect it from rough sea conditions.

Strategic Significance

  • The **Long March 10B** technology supports China's heavier lunar launch systems, which strengthens its goal of landing astronauts on the Moon by **2030**.
  • Reusable rockets can sharply lower launch costs, helping China deploy large satellite constellations and compete with Western broadband networks.