ENGR 131 Fall 2013 Answer Sheet Homework 3 Answer Sheet 2 Name Purdue Login Section Number 005 020 Problem 2 MATLAB Stories Summary of User Story 1 and explanation of why you chose this story Being so small and light nanosatellites usually do not have the means to precisely control orientation But using MathWorks this is exactly what students at the University of Toronto Institute for Aerospace Studies UTIAS are doing We rely on these products to build highfidelity models of sensors actuators and satellite mass properties develop control algorithms and simulate the overall control system to predict performance explains Dr Zee Director of the Space Flight Laboratory SFL They also require reliable space simulations due to the inability to test in the lab where effects of gravity and air currents will skew data With a prior background in MATLAB and Simulink the students modeled sun sensors magnetometers star trackers and GPS receivers They also developed algorithms for attitude tilt control They upload data and put their simulations to use on the Canadian Advanced Nanospace eXperiments CanX It was a very valuable experience for the UTIAS students to work with scientists in the field and to do hands on engineering work I chose this story because I am very interested in space and satellite technologies that are being developed so naturally I went to the Aerospace Toolbox section Doing projects like this using the technology we are experimenting with in this class is inspiring to a future Aerospace student as an option for how I can do similar projects and use programs in my future job Reference list citation for User Story 1 in APA format MathWorks Inc 2010 University of Toronto Students Work with Space Flight Laboratory Engineers to Design and Simulate Nanosatellite Control Systems Retrieved from http www mathworks com tagteam 61491 91811v00 UToronto user story pdf Summary of User Story 2 and explanation of why you chose this story Edwards Air Force Base goes through a long 30 hours approximately of testing of their Global Hawk unmanned reconnaissance system Up to 20 gigabytes of data are produced per flight MathWorks explains providing a clear need for programs like their own parallel computing tools and MATLAB to work quickly and efficiently The old Uniform Flight Test Analysis System UFTAS is too slow for today s loaded job and engineers only have a limited time between flights to analyze the data So they created MUFTAS which analyzed data from multiple flight maneuvers simultaneously on a computer cluster with 16 dualcore 2 61 GHz Opteron processors for a data set including multiple fuel measurements temperature readings inertial velocities and angular accelerations Further Edwards AFB used Simulink for aerodynamics predictions via a six degrees ofPage 1 of 4 ENGR 131 Fall 2013 Answer Sheet freedom model of forces and moments After all this data processing in the new programs analysis was completed 16 times faster And the time between flight tests was amazingly cut down from a few weeks to just a few days I chose this story because I haven t ever worked with MATLAB and I was interested in getting to know more of the ways it can be used in the engineering field As a potential Aerospace student and someone that has always been interested in airplanes reading an article about the well known Edwards Air Force base seemed exciting Reference list citation for User Story 2 in APA format MathWorks Inc 2010 Edwards Air Force Base Accelerates Test Flight Data Analysis Usng MATLAB and MathWorks Parallel Computing Tools Retrieved from http www mathworks com company user stories Edwards Air Force Base Accelerates FlightTest Data Analysis Using MATLAB and Parallel Computing html Page 2 of 4 ENGR 131 Fall 2013 Answer Sheet Problem 3 Teaming Scenario 1 Identify two roles team members play in this scenario Justify your answer Team Member Name Role Example s to justify chosen role Nelson Team Leader Makes the decision and calls a team meeting initiates the idea to make a timeline spurs team along by suggesting what to discuss next i e how to build airplane Hyun Secretary Records what the team is doing and planning 2 What stage do you think this team is in Justify your answer Stage Name Example s to justify the chosen stage Storming The members roles are still being clarified and there is still tension amongst the members in regards to what is expected of each of them There is also still discussion and disagreement over how the airplane should be made and even how the project should be spaced and timed out 3 What is the formal name of the document that the team refers to at the end of the scenario Team Code of Cooperation 4 What is one rule or expectation that the team could include in this document based on something they were unhappy about during the meeting Discuss all ideas promptly with the rest of the team not keeping ideas to yourself or even leaving it to the rest to do all the idea contributing 5 Can the team modify this document and add more rules if they need to in the future Yes often situations come up that were unexpected and the team will want to clarify how such should be dealt with If they do add rules however they will need to be fully discussed with the rest of the team beforehand 6 At the next meeting the team takes a long time to discuss a certain issue and goes over the time allocated for that task List two tools excluding the document discussed in the previous question that the team can use to help them be more productive Also list how the team can use the tool Tool How the tool can help the team Page 3 of 4 ENGR 131 Fall 2013 Answer Sheet Email word documents They can on their own time write out exactly what they want to discuss next time with all the details figured out all ready to be presented to the team If the issue is a disagreement in the construction or design they should list all the pros and cons that are leading them to this disagreement in order to cut down on time while arranging ideas Clock Keep track of the time that is passing and be conscientious as to how much time is left quickly coming to decisions and not just going on and on over differences of opinion Page 4 of 4