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IntroductionsOn December 11, 1998, NASA launched the Mars Climate Orbiter (MCO). The mission of the MCO was to gather Martian climate data and serve as a relay station for the Mars Planet Lander (MPL), which would follow shortly thereafter. For nine months the MCO traveled through space. Some unplanned course corrections were executed during the trip, but no major issues were identified. On September 23, 1999, the MCO entered Martian atmosphere. It began an orbit that would take it temporarily out of radio contact behind the planet, as expected. The satellite was never heard from again.Subsequent investigation revealed that a systemic failure caused the MCO to enter the atmosphere at an altitude approximately 100 miles lower than planned. The failure was traced to thrusters designed to use Metric units but supplied data programmed in English units. The satellite may have incinerated in the Martian atmosphere or continued traveling through space, unable to communicate with Earth.The Mars Climate Orbiter Mishap Investigation Board was commissioned to investigate what happened. This investigation report identified 8 contributing causes that allowed the units problem to remain undetected .lists these contributing causes. A selected set of these items will be discussed in this paper and suggestions will be made to address them. This paper will also examine the concept of Intellectual Bias as it applies to the loss of the MCO. The investigation report also proposed 15 general recommendations for mitigating problems in the future. These recommendationsare, in the main, generalizations that require specific mappings into existing processes used by NASA.The general recommendations are enumerated .
An XML-formatted file could be contrived to specify English/Metric as well as specific units of measure for all the values in the file.illustrates how such an XML file might be structured.
<?xml version="1.0" encoding="ISO-8859-1"?>
<VelocityChange>
<System>Metric</System>
<unit>Newtons</unit>
<direction>X</direction>
<Delta>100</Delta>
</VelocityChange>
each student shall produce a paper of about 2000 words guidance to indicate the level of detail of discussion intended
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CEE 357 Winter 2014, HW#5, How much HOCl is needed to react with each mg/L of S in the latter reaction? Plot the BOD remaining in the water
Mathematically formulate a linear programming model for the problem and formulate and solve a spreadsheet model for the problem.
an office of a state license bureau has two types of arrivals. individuals interested in purchasing new plates are
Discover the basic concepts of digital electronics and its applications by building up a Video Switcher circuit using various digital components. All information from lecture notes, tutorials and labs can be used for this assignment.
problem 1 the board of directors of general wheels co. is considering seven large capital investments. each investment
List the main sources of heat and humidity in mines and briefly describe the methods that can be used to control heat and humidity in an underground mining situation.
good understanding of Mil-Std-499 and Mil-Std-499A
requirements are1- prescriptive analysis of occupancy through prescriptive code analysis with in- depth information
What is the use of HEC-HMS modelling in water supply system ,how we use it? what is the necessary input for the software?
Rank the following functions by order of growth. If two or more are of the same order (f(n) and g(n) are in the same class if and only if f(n) = T(g(n))), indicate which.
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