Unit 1
Unit 2
Project 2.3 Glass Box
Project description - You will use one of your cube nets to build a glass box
from transparency film. You will then place an object inside your glass box and
sketch all six orthographic projections of the object on the box.
Conclusion Questions
1. How would you describe the geometric relationship that exists between the adjacent views of a multi-view drawing?
- The lines of sight that are perpendicular to the plane of the feature show the relationship with the object of a muti-view drawing.
Conclusion Questions
1. How would you describe the geometric relationship that exists between the adjacent views of a multi-view drawing?
- The lines of sight that are perpendicular to the plane of the feature show the relationship with the object of a muti-view drawing.
Unit 3
Project 3.3 Making Linear Measurements
Project Description
How thick is one of the hairs on your head? Could it be measured accurately with a standard inch scale? If the smallest increment on an inch scale is 1/16 inch, then 20 average size human hairs could fit within the space of a 1/16 inch gap. The required degree of accuracy needed is dependent on the application. If you were to build a home, a standard inch scale is perfect for laying out walls and locating window openings. A dial caliper is a precision measurement tool that is often used in the design and manufacturing of consumer products and is, perhaps, the most common of all the precision measurement tools. Engineers, technicians, scientists, and machinists all use dial calipers to assist the processes of analysis, inspection, engineering design, reverse engineering, and manufacturing.
In this activity we practiced making measurements with a dial caliper.
Conclusion Questions
1. What additional tools may have helped to measure these parts?
-A protractor would have helped measure the items due to their curved corners. Also a weight scale would have been used to describe the item in much more depth.
2. Revisit number 1 above. Measure at least five of the dimensions of your part using a standard ruler and record the measurements in brackets next to each caliper measurement. Which measuring device (the caliper or the ruler) provides the best measurements? Why?
-In all of the recorded data the caliper was much more efficient and accurate. There were instances in which the ruler just didn't provide an accurate enough description of the item being measured.
How thick is one of the hairs on your head? Could it be measured accurately with a standard inch scale? If the smallest increment on an inch scale is 1/16 inch, then 20 average size human hairs could fit within the space of a 1/16 inch gap. The required degree of accuracy needed is dependent on the application. If you were to build a home, a standard inch scale is perfect for laying out walls and locating window openings. A dial caliper is a precision measurement tool that is often used in the design and manufacturing of consumer products and is, perhaps, the most common of all the precision measurement tools. Engineers, technicians, scientists, and machinists all use dial calipers to assist the processes of analysis, inspection, engineering design, reverse engineering, and manufacturing.
In this activity we practiced making measurements with a dial caliper.
Conclusion Questions
1. What additional tools may have helped to measure these parts?
-A protractor would have helped measure the items due to their curved corners. Also a weight scale would have been used to describe the item in much more depth.
2. Revisit number 1 above. Measure at least five of the dimensions of your part using a standard ruler and record the measurements in brackets next to each caliper measurement. Which measuring device (the caliper or the ruler) provides the best measurements? Why?
-In all of the recorded data the caliper was much more efficient and accurate. There were instances in which the ruler just didn't provide an accurate enough description of the item being measured.
Project 3.6 Fling Machine
fling_machine_ic.xlsx | |
File Size: | 12 kb |
File Type: | xlsx |
Project Description
There are many ways to solve a problem. Sometimes it is as simple as applying a piece of duct tape. Other times it takes months or years for a product to progress from an idea into full-scale production. In this activity my team quickly designed and built a device that could send a cotton ball as far as possible through the air.
Conclusion Questions
1. Analyze the cotton ball travel distance data that you collected.
a. Record the travel distances of the cotton ball that you measured during the testing phase below and create a dot plot of your data.
Ft. In.
42 6
45 3
40 7
44 2
47 2
40 7
42 6
44 2
45 6
48 9
b. Create a histogram of your data using five class intervals.
Please refer to excel document posted under slideshow.
c. Is the data normally distributed? Justify your answer.
Please refer to excel document posted under slideshow.
d. Calculate the mean, median, range and sample standard deviation of the travel distances of the cotton ball.
Please refer to excel document posted under slideshow.
e. Give a range of travel distances within which you would predict that 95% of all cotton balls launched with your device would fall. For example, you might predict that 95% of the cotton balls that you launch would travel between 2.25 ft and 3.00 ft. Justify your answer.
I can predict that about 90% of all launches can or may land in around the 42' 6" and 44' 8" range. this was the most common landing area for most of the test launches.
2. Do you feel that the statistical analysis results would be a better measure of performance when comparing alternate devices that the distance traveled by a cotton ball in a single attempt? Why or why not?
Yes, I believe that if the projectile was of a different and more sturdy material the results would vary greatly. This would be due to the mass of the object; say we launched a pebble or small sized rock, the difference in distance would be quickly noticeable.
3. How would you recommend using the results of your statistical analysis of travel distances to assess device performance (rather than giving points for the distance of the single attempt allowed in the challenge)?
4. If you had the opportunity to optimize your design, how would you increase the distance that the cotton ball moves?
If I could have optimized my design I would have created a metal barrel so that the pressure from the balloon after release wouldn't crush the paper roll. This as a result affected the overall performance of the cannon after several launch attempts. Although all were very successful, it was perceivable how much the accuracy of the cannon was effected. So in return changing the barrel would ultimately produce much better results.
5. If you had the opportunity to optimize your design, how would reduce the amount of materials used?
Instead of using tape to connect the straws to the barrel and for the base, I would use some kind of concoction to connect the two materials. this would create a possibly stronger base and lighter frame. Besides that all else seems to be fine.
6. How could you improve the effectiveness of your team?
Given the amount of time we had to perform the task I believe we did fairly well. Not only did we manage to successfully build the contraption we were also the successful champions of the challenge. I can confidently state that our team performed up to par.
There are many ways to solve a problem. Sometimes it is as simple as applying a piece of duct tape. Other times it takes months or years for a product to progress from an idea into full-scale production. In this activity my team quickly designed and built a device that could send a cotton ball as far as possible through the air.
Conclusion Questions
1. Analyze the cotton ball travel distance data that you collected.
a. Record the travel distances of the cotton ball that you measured during the testing phase below and create a dot plot of your data.
Ft. In.
42 6
45 3
40 7
44 2
47 2
40 7
42 6
44 2
45 6
48 9
b. Create a histogram of your data using five class intervals.
Please refer to excel document posted under slideshow.
c. Is the data normally distributed? Justify your answer.
Please refer to excel document posted under slideshow.
d. Calculate the mean, median, range and sample standard deviation of the travel distances of the cotton ball.
Please refer to excel document posted under slideshow.
e. Give a range of travel distances within which you would predict that 95% of all cotton balls launched with your device would fall. For example, you might predict that 95% of the cotton balls that you launch would travel between 2.25 ft and 3.00 ft. Justify your answer.
I can predict that about 90% of all launches can or may land in around the 42' 6" and 44' 8" range. this was the most common landing area for most of the test launches.
2. Do you feel that the statistical analysis results would be a better measure of performance when comparing alternate devices that the distance traveled by a cotton ball in a single attempt? Why or why not?
Yes, I believe that if the projectile was of a different and more sturdy material the results would vary greatly. This would be due to the mass of the object; say we launched a pebble or small sized rock, the difference in distance would be quickly noticeable.
3. How would you recommend using the results of your statistical analysis of travel distances to assess device performance (rather than giving points for the distance of the single attempt allowed in the challenge)?
4. If you had the opportunity to optimize your design, how would you increase the distance that the cotton ball moves?
If I could have optimized my design I would have created a metal barrel so that the pressure from the balloon after release wouldn't crush the paper roll. This as a result affected the overall performance of the cannon after several launch attempts. Although all were very successful, it was perceivable how much the accuracy of the cannon was effected. So in return changing the barrel would ultimately produce much better results.
5. If you had the opportunity to optimize your design, how would reduce the amount of materials used?
Instead of using tape to connect the straws to the barrel and for the base, I would use some kind of concoction to connect the two materials. this would create a possibly stronger base and lighter frame. Besides that all else seems to be fine.
6. How could you improve the effectiveness of your team?
Given the amount of time we had to perform the task I believe we did fairly well. Not only did we manage to successfully build the contraption we were also the successful champions of the challenge. I can confidently state that our team performed up to par.