space medium Fill in the Blank

Friction stir welding is preferred for aluminum-lithium alloy rocket tanks because it produces _______ joints than fusion welding.

  1. weaker
  2. stronger and defect-free
  3. heavier
  4. more porous

Answer: stronger and defect-free

FSW solid-state process avoids melting/solidification defects, yielding superior mechanical properties for cryogenic tank structures in PSLV/GSLV/LVM3.

Topic Space Technology - Manufacturing
Exam Relevance ISRO Scientist Exam, SSC CPO
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