Which component failed during the Challenger’s January 1986 launch, causing it to explode? Answer

Which component failed during the Challenger’s January 1986 launch, causing it to explode? Answer

The component that failed during the Challenger’s January 1986 launch, leading to its explosion, was an O-ring seal in the right Solid Rocket Booster (SRB). These critical rubberized rings were designed to create a tight seal between the segments of the booster, preventing hot gases from escaping during the launch.

On January 28, 1986, the launch morning experienced unusually cold temperatures, nearing freezing point, which proved catastrophic for these O-rings. The cold stiffened the rubber material, significantly reducing its elasticity and ability to properly seal the joint when the solid rocket motor ignited. Engineers from Morton Thiokol, the SRB contractor, had in fact voiced serious concerns about the O-rings’ performance in such low temperatures and recommended postponing the launch, but these warnings were ultimately overruled by NASA management.

Source:

https://www.youtube.com/watch?v=D5oe3D5afD8

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