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  2. File:Challenger explosion.jpg - Wikipedia

    en.wikipedia.org/wiki/File:Challenger_explosion.jpg

    Full Description: On January 28, 1986, the Challenger space shuttle and her seven-member crew were lost when a ruptured O-ring in the right solid rocket booster caused an explosion soon after launch. This photograph, taken a few seconds after the accident, shows the main engines and solid rocket booster exhaust plumes entwined around a ball of ...

  3. Rogers Commission Report - Wikipedia

    en.wikipedia.org/wiki/Rogers_Commission_Report

    The commission found that the immediate cause of the Challenger accident was a failure in the O-rings sealing the aft field joint on the right solid rocket booster, causing pressurized hot gases and eventually flame to "blow by" the O-ring and contact the adjacent external tank, causing structural failure. The failure of the O-rings was ...

  4. Space Shuttle Challenger disaster - Wikipedia

    en.wikipedia.org/wiki/Space_Shuttle_Challenger...

    The amount of O-ring erosion was insufficient to prevent the O-ring from sealing, and investigators concluded that the soot between the O-rings resulted from non-uniform pressure at the time of ignition. [3]: 130 [6]: 39–42 The January 1985 launch of STS-51-C was the coldest Space Shuttle launch to date. The air temperature was 62 °F (17 °C ...

  5. STS-51-L - Wikipedia

    en.wikipedia.org/wiki/STS-51-L

    During the ascent phase, 73 seconds after liftoff, the vehicle experienced a catastrophic structural failure resulting in the loss of crew and vehicle. The Rogers Commission later determined the cause of the accident to have been the failure of the primary and secondary (backup) O-ring seals on Challenger ' s right Solid Rocket Booster (SRB ...

  6. List of datasets for machine-learning research - Wikipedia

    en.wikipedia.org/wiki/List_of_datasets_for...

    Data about frequency, angle of attack, etc., are given. 1503 Text Regression 2014 [214] R. Lopez Challenger USA Space Shuttle O-Ring Dataset Attempt to predict O-ring problems given past Challenger data. Several features of each flight, such as launch temperature, are given. 23 Text Regression 1993 [215] [216] D. Draper et al. Statlog (Shuttle ...

  7. States with the Highest and Lowest Property Tax Rates - AOL

    www.aol.com/states-highest-lowest-property-tax...

    9. Kansas. When it comes to expensive states for homeowners, the state of Kansas doesn’t often come to mind. But it has an average property tax rate of 1.26%.

  8. Timeline of the STS-51-L mission - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_the_STS-51-L...

    The mission ended in disaster following the destruction of Challenger 73 seconds after lift-off, because of the failure of an O-ring seals on Challenger ' s right solid rocket booster, which led to the rapid disintegration of the Space Shuttle stack from overwhelming aerodynamic pressures.

  9. Fix problems signing into your AOL account - AOL Help

    help.aol.com/articles/help-signing-in

    Use the Sign-in Helper to locate your username and regain access to your account by entering your recovery mobile number or alternate email address.; To manage and recover your account if you forget your password or username, make sure you have access to the recovery phone number or alternate email address you've added to your AOL account.