スペースシャトル・チャレンジャーの爆発事故

スペースシャトル「チャレンジャー」の空中爆発の映像です。打ち上げ後に燃料タンクに引火し、大爆発してしまいます。Oリング(オーリング)というゴムの「パッキン」が冷気で固化し、隙間から燃料が漏れたとのことです。

Challenger was destroyed in the second minute of STS-51-L,
the orbiter's tenth mission, on January 28, 1986,
when an O-ring seal on its right solid rocket booster failed due to record low temperatures.
The O-ring became brittle and allowed a plume of flame to stream out of the SRB that weakened Challenger's external fuel tank, leading to the orbiter's rapid breakup under aerodynamic stresses.
A subsequent investigation concluded that poor design of the SRB seals,
unusually cold temperatures that weakened the O-rings,
and lack of inspection were to blame for the disaster.

01/28/1986 - Space Shuttle Challenger disaster, long version