Faulty strut and complacency cause of Spacex rocket failure
SpaceX thinks a steel strut holding down a bottle of high-pressure helium inside the Falcon 9 snapped on June 28, leading to a rapid “overpressure event” in the rocket’s upper-stage liquid-oxygen tank. The strut was probably poorly made, since it apparently broke under a load of 2,000 lbs. (900 kilograms) of force, despite being certified …