The significant engineering failure that will be analyzed is the Space Shuttle Challenger. In 1986, the Challenger faced many launch delays. The first delay of the Challenger was due to the expected weather front and presence of the Vice President (ENGINEERING.com). Since rain and cold temperatures were expected to move into the area, they didn’t want the Vice President to make unnecessary trips. However, the launch window became perfect weather conditions due the weather front stalling. The second delay was due to a defective microswitch in the hatch locking mechanism. By the time the problem was fixed, the winds became too high and the weather front had started to move again.
Due to these delays, the night before the launch, there was
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For the effectiveness requirements, the cost of this shuttle needs to meet with the budget cuts. Also, its failure rate should be low as possible and systems should be reliable. For the operational life cycle, the system life cycle should be long, since it will be reusable. Also, the space shuttle system anticipated time of use will be as long as the missions, which could range between days and months. For the environment, the space shuttle will be in space, air, and ground with varying temperatures. This process is very important, because it is critical to address these requirements in the proper context for the entire system at an early stage in order to optimize the …show more content…
Maintenance is done to extend the life of the system and to make sure the system continues to meet its overall operational requirements. There are three levels of maintenance (Blanchard). The first level is organizational maintenance. At this level, the maintenance is performed at the site by local personnel with low maintenance skills. They usually perform visual inspections, operational checkout, minor servicing, external adjustments, and more. The second level is intermediate maintenance. At this level, the maintenance is performed by mobile or semi-mobile units by personnel with intermediate maintenance skills. This level usually performs detailed inspections and system checkout, major servicing, major equipment repair and modifications, simple software maintenance, and more. The third level is depot maintenance. This is usually performed at a fixed location by personnel with high maintenance skills. At this level, they performed complicated factory adjustments, complex equipment repairs and modifications, overhaul and rebuild, detailed calibration, and more. Between these three levels of maintenance, the space shuttle will experience all three levels of maintenance. However, it will experience more of the intermediate and depot levels since it is a complex system that can have a catastrophic
The TC 3.04.7 (Army Aviation Maintenance), chapter 1 has a section on Army Maintenance Planning and Execution. It lays out P4T3 (Problem, Plan, People, Parts, Time, Tools, Training), which is every maintenance officer’s tool on how to run a successful maintenance program. In theater you have the people, parts, tools, and training. What sometimes is lacking is the Plan and Time. A solution could be to essentially build an assembly line when conducing phases and using this P4T3 model; it would ultimately shorten the phase time in the hanger. For example, the Longbow has many sections to complete when conducting a 500hr Phase. If you assigned people who are extremely versed in performing maintenance in that particular section of the aircraft, they will continue to do maintenance on that aircrafts section for the time that they are at that phase location (i.e. Camp Taji). Secondly, assign a Power-On Team at the end of the phase to assist the Maintenance Test Pilots to do their ground and flight Maintenance Operational Checks (MOC’s). This Team will be in charge of all the rigging, hanging blades and further unforeseen unscheduled maintenance.
NASA has faced many tragedies during their time; but one can question if two of the tragedies were preventable by changing some critical decisions made by the organization. The investigation board looking at the decisions made for the space shuttle tragedies of the Columbia and Challenger noted that the “loss resulted as much from organizational as from technical failures” (Bolman & Deal, 2008, p. 191). The two space shuttle tragedies were about twenty years apart, they both had technical failures but politics also played a factor in to these two tragedies.
Controlled Requirement Expression (CORE) was developed for the British Aerospace programs while the UK Ministry of Defence was carrying out a requirement analysis (Hull et al., 2010). The fundamental component of the CORE methodology is viewpoints as different users see systems in different ways. There are many different stakeholders involved in a system; using CORE methodology involves finding all the different viewpoints of those stakeholders that have an interest in the system whether it’s a person, role or organisation ext.… (Sommerville and Sawyer, 2000). By organising viewpoints hierarchy it assists experts to read the scope and supports the analysis process. CORE Methodology is extensively used for real time system requirements specification.
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The Challenger disaster of 1986 was a shock felt around the country. During liftoff, the shuttle exploded, creating a fireball in the sky. The seven astronauts on board were killed and the shuttle was obliterated. Immediately after the catastrophe, blame was spread to various people who were in charge of creating the shuttle and the parts of the shuttle itself. The Presidential Commission was decisive in blaming the disaster on a faulty O-ring, used to connect the pieces of the craft. On the other hand, Harry Collins and Trevor Pinch, in The Golem at Large, believe that blame cannot be isolated to any person or reason of failure. The authors prove that there are too many factors to decide concretely as to why the Challenger exploded. Collins and Pinch do believe that it was the organizational culture of NASA and Morton Thiokol that allowed the disaster. While NASA and Thiokol were deciding whether to launch, there was not a concrete reason to postpone the mission.
The training required for the job will be received from whatever company hires you. You can receive the training needed either on the job site or your employer will send you to a tech center to receive training. Trainees are assigned basic tasks, such as cleaning parts, checking fuel and oil levels, and driving vehicles in and out of the shop. Employers often send experienced technicians to special
For this assignment we will discuss some theories on organizational change learned during this class and how they relate to the case study of NASA (The Challenger and Columbia Shuttle Disaster). First we will look the images of managing change used by NASA in the case study. Then we will discuss the types of change(s) NASA under took. Next we will look at some of the challenges of change that NASA faced. Next we will discuss some of the resistance to change that NASA dealt with. Then we look at how NASA implemented change. Next we will discuss vision and change and the impact in the case study. Finally we will discuss sustaining change as it relates to the changes implemented by NASA in the case study.
There are three types of Preventive Maintenance Checks and Services (PMCS) that the military performs on their vehicles; they are, before, during, and after checks. These checks are annotated on DA form 5988-E, which is the Equipment Maintenance and Inspection worksheet. If anything looks wrong and you cannot fix it, write it on the DA form 5988-E and immediately report it to unit maintenance.
Time is the third con that I will bring up because of how long it would take to make, test and make sure that a spaceship is good and trustworthy enough actually to use for space travel. Training will also take a long time to prepare people to go into space and how to properly use and run a
The system development life cycle, also know as the SDLC, is the process of designing and developing a system or software to meet certain requirements. (“System development life,”). This cycle involves many different phases, in which the system is planned, analyzed, designed, implemented, and tested. There are five major phases in the system development life cycle: systems planning, systems analysis, systems design, systems implementation, and systems security and support. Each of these phases has a particular responsibility and certain tasks are perfumed in each phase.
After an ideal solution is selected and approved its execution through implementation is done to address the problem. All tasks in the implementation should be coordinated with a finite start and implementation closure deadlines as well as milestones. Program evaluation and Review (PERT) as well as Critical Path Method(CPM) are ideal to guide this stage.
Requirements engineering begins during the communication activity, continues into the modeling activity, and builds a bridge from the system requirements into software design and construction. Through requirements engineering, there is an examination of the context of software work performed. It is essential for the software engineering team to understand all requirements of a problem before the team tries to solve the problem. An identification of specific needs that the design and construction must address is also included. Further is a need for the identification of the priorities that guides the order for the completion of work. This i...
Preventive maintenance can be defined as an activity performed on a certain schedule which is intended to prevent breakdowns or deterioration. These activities can include regular inspection along with solving any discovered problems or situations and regularly scheduled parts changes. Preventive maintenance involves the scheduled adjustment, inspection, replacement of wearable parts, calibrations, basic cleaning and lubrication of equipment or other recommendation made by the equipment manufacturer. These activities can help increase the equipment functional life and help decrease facilities deterioration. No equipment should, No equipment should reach the breaking point [1].
The exploration of space is a controversial topic; there are various factors that contribute to understanding the impact of failed space missions. My analysis is focused mainly on the impact of specific failed space missions on future research and activity in terms of developments of space exploration. Space exploration creates a great dea...