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ENGR-482 exam 2 Study Guide with Complete Solutions

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©GRACEAMELIA 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED FIRST PUBLISH OCTOBER 2024 Page 3/28 Decisions in Columbia Disaster - Ans:--management denied several requests by different engineering groups for clearer photos of foam impact on shuttle wing -although foam strikes were below performa...

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©GRACEAMELIA 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED

FIRST PUBLISH OCTOBER 2024




ENGR-482 exam 2 Study Guide with
Complete Solutions


people involved in challenger disaster - Ans:✔✔-Roger Boisjoly- Enginer at thiokol


Robert Lund- VP engineer at Thiokol


Jerald Mason- Senior VP at Thiokol who pressured to launch


NASA-Marshall


Rogers commission


decisions of Challenger - Ans:✔✔--Boisjoly voiced concerns anout o-ring issues




-Thiokol managers responsible for the go/no-go decision initially offered a no-launch recognition in

response to Boisjoly's objections, but reversed this decision after NASA-marshall administrators reacted

negatively




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, ©GRACEAMELIA 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED

FIRST PUBLISH OCTOBER 2024




-Despite being told to "put on his management hat" Roger Boisjoly maintained his view that it was

unsafe to launch Challenger in such cold conditions




-Roger Boisjol testified about the questionable process that led up to the decision to launch Challenger


Technical issues with Challenger - Ans:✔✔--Thiokol engineers in Utah were beginning to realize that O-

ring blowby leakage was adversely affected by temperature, and that low temp launches could introduce

risk that were yet not well understood




-The ambient temp at the Florida launch site on the morning of launch was 36 degrees Farenheit, well

below previous experiences, and with heavy ice buildup on the launch vehicle and tower




-hot gases generated by the combustion of solid rocket fuel in the booster found a pathway through the

joint that is sealed by 2 o-rings and filled with sealing putting


People of Columbia disaster - Ans:✔✔-Rodney Rocha- NASA engineer who had concerns with foam


Linda Ham - NASA senior manager who OK'ed launchColumbia accident investigation BOARD, admiral

HAL Gehman




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, ©GRACEAMELIA 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED

FIRST PUBLISH OCTOBER 2024




Decisions in Columbia Disaster - Ans:✔✔--management denied several requests by different engineering

groups for clearer photos of foam impact on shuttle wing


-although foam strikes were below performance specifications of the shuttle, management convinced

themselves that past successes were an indication that a known defect would not cause problems,

instead of deciding the issue on the basis of testing and sound engineering analysis


Organizational factors that contributed to the loss of the Columbia: - Ans:✔✔-1. characterization of the

shuttle as an operational, rather than developmental program


2. schedule pressures


3. organizational barriers preventing effective comm of safety info


4. constrained financial and personnel resources


Technical Issues: - Ans:✔✔-1. impact of a briefcase-sized piece of foam that destroyed the wing leading

edge and the main spar in the left wing


2. defects resulting from a non-optimal design, because the bipod structure and foam application

processes were designed separately


3. hot gases entering a breach in the wing leading edge and destroying the structural integrity of the

wing


Groupthink - Ans:✔✔-situation in which groups come to agreement at the expense of critical thinking

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