| 1. | The tension rods are connected at right angles within the furniture's ring joints.
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| 2. | Eleven years ago, a design flaw in the booster's O-ring joints triggered the fatal Challenger accident.
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| 3. | Glass O-ring joints with elastomer O-ring in between.
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| 4. | The leak of hot exhaust gases from a booster O-ring joint triggered the fatal Challenger accident of 1986.
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| 5. | The Challenger disaster led to a 32-month grounding of all shuttle activities while engineers redesigned the O-ring joints.
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| 6. | It was the leak of hot gases through a similar O-ring joint that triggered the fatal Challenger accident of 1986.
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| 7. | The outer shell was in two sections, inner and outer drum, and were joined by a bolted ring joint at top and bottom.
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| 8. | Despite their certainty of O-ring joint inadequacies as early as 1977, NASA launched an investigation to discover the cause of the disaster.
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| 9. | The agency is investigating the cause of charring on insulation that protected O-ring joints on boosters used to launch Columbia on June 20.
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| 10. | With a solder ring joint, the joint is heated until a ring of molten solder is visible around the edge of the fitting and allowed to cool.
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