# ISU IE 361 - Lab 8-F2008 (4 pages)

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## Lab 8-F2008

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## Lab 8-F2008

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Lecture Notes

Pages:
4
School:
Iowa State University
Course:
Ie 361 - Statistical Quality Assurance
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Unformatted text preview:

IE 361 Lab 8 1st Paper Helicopter Study and Process Capability Name In this lab we re going to collect some paper helicopter flight time data for two purposes First we ll do this as practice with the mechanics of making flying and timing flights of paper helicopters so that we can use them in upcoming labs to illustrate experiment design and analysis methods Second we ll use the data collected today in some process capability calculations Begin by making a single paper helicopter and weighting it with a single paper clip Take the helicopter out into the hallway to measure some drop from 6 ft times Use the yardstick to measure up 6 ft from the floor and attach a piece of string to the wall at that height with a piece of masking tape one of your team members may need to hold the tape in place Extend the string out perpendicular from the wall to establish a launch location Assign one team member to act as the timer This person will tell the person launching the helicopter whether the string appears to be parallel to the floor use the stopwatch give the 5 4 3 2 1 launch command sequence and be responsible for announcing the flight time for each trial Assign another team member to do the data recording After making a few trial runs begin official data collection and collect n 10 consecutive drop times Record them in the table below Trial Time sec Moving Range 1 2 3 4 5 6 7 8 9 10 1 Compute the sample mean and standard deviation of these initial values and record them below x s 2 Module 16 Section 4 4 of SQAME suggests that if we were not prepared to guarantee that launch and measurement process conditions were constant over the period of data collection here a possible way to estimate a short term launch and measurement is using an average moving range Compute the 9 moving ranges for the launch data and estimate using MR 1 128 How does this compare to your value for s from 1 1 Now return to the classroom and make 11 additional helicopters of the same design Write on

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