Lab4_PBevis

.pdf

School

University of Colorado, Boulder *

*We aren’t endorsed by this school

Course

1070

Subject

Aerospace Engineering

Date

Apr 3, 2024

Type

pdf

Pages

7

Uploaded by PresidentFireSquirrel30

Lab 4 Report Name: Peyton____________________ Partners: _Drew Noah_______________ , _______________ Please paste your Excel data and graph below this line. Highlight everything you need in Excel, copy, and then use ‘Paste Special’ to paste as an image (e.g., PNG, PDF, etc.). You can take a screenshot as well and paste it here, but please make sure it is easily viewable by your TA. Please remove the example image below before pasting your own.
Question 1 (10 points): a. Is your experimental value of n greater or less than the expected value of 2? Our value is greater at 2.1038 b. Choose 1 condition (A-D from lab manual) that you think makes the most sense here for your experiment’s physical shortcomings. Which one did you choose? Condition B c. For the condition you chose, what problems with the setup or experimental procedures could have caused this specific measurement to be higher/lower than expected? It is possible that the pressure gauge in the wind tunnel causes abnormal wind flow. Question 2 (10 points): a. What kind of vehicle was your model car? (often written on the bottom of the vehicle) Hot wheels monster truck (not written) b. What was the wind speed (m/sec) you measured when the model blew out of the tunnel? 10.1 m/s c. Based on your experiment, what wind speed in miles per hour (multiply m/sec by 2.3 to get mph) would move or turn over a full-size vehicle (remember to also use the scaling factor of 4 here)? 92.92 miles per hour
d. Does your predicted wind speed (for the full-size vehicle) seem high enough to blow your type of vehicle off a real road? Justify your answer. Yes, because it takes 60mph+ winds to move a normal car. e. Give two differences between the model sitting in the wind tunnel and a real car in a real windstorm on a real road (Besides the aforementioned differences of scale). The car does not have enough weight relative to the scale of the car. Also there is far less friction with the plastic wheels on a plastic surface compared to real roads and vehicles. Question 3 (10 points): a. What was your measured wind speed (m/sec) for this part of the experiment? 6.45 m/sec b. Multiply your wind speed in m/sec by 2.3 to obtain the speed in m.p.h. 14.84 miles per hour c. In order to scale your measurements, multiply the speed in m.p.h. by 10 . What do you get? 148.40 miles per hour d. What was the lowest negative pressure (i.e., which negative value was the most negative) measured on the hut? -0.055 kPa
Your preview ends here
Eager to read complete document? Join bartleby learn and gain access to the full version
  • Access to all documents
  • Unlimited textbook solutions
  • 24/7 expert homework help