Design Project

1
Design Project

• ENGR 9.2 The Technical Aspects and Report
  Requirements for the Air Powered Car Project

2
Problem Statement - Getting Started

• Design constraints
• Engineers often confronted with developing a
  design given a specific set of unchangeable
  criteria.
• Examples of constraints
• limited budget
• having to use special materials because of a
  hostile environment
• geometry/shape and weight requirements

3
Team Design Assignment

• A specific bill of materials has been provided,
  which is sufficient for your team to construct an
  air powered car.
• Design your vehicle for optimal performance in
  the following areas
• Accuracy
• Speed
• Test the effectiveness of your final design in
  the aforementioned categories.
• Your cars performance will contribute to your
  final project grade.
• This project is worth 10 of your grade in ENGR
  111.

4
The Design Process
5
Problem Identification
6
Preliminary Ideas
7
Refinement
8
Preliminary Report

• Problem ID., preliminary ideas, and refinement
• Due at the beginning of class 11.2 .
• 20 of your project grade
• Use pages DP 1- 9 of your workbook or using that
  format with a word processor.
• Must be well organized and nicely presented
• rough sketches must be neat and on 8.5 x 11
  paper

9
Demonstration

• During the competition the following two tests
  will be conducted
• Accuracy will be measured as the number of
  gates which the vehicle passes through. The
  gates will be 24 wide and will be placed as
  illustrated in on the next slide. The car must
  pass completely through the gate, without
  touching either side.
• Speed will be measured as the time required for
  the car to travel 25 feet, beginning at rest.
  This will be measured by drawing two parallel
  lines, twenty-five feet apart. You vehicle must
  begin behind one line, at rest. The time will be
  measured as the time required for the car to
  break the plane of the other line.
• Points will be earned based on your performance.

10
Course Information

• 50 long by 8 wide.
• Gates are 24 wide.
• Slightly offset in a gentle serpentine (sine
  wave).
• Exact dimensions will provided at a later date.

11
Accuracy Setup
12
General Rules

• Each team is allowed one Mulligan
• You may repeat any run and take the new result
  (for better or worse)
• You are not required to repeat any runs
• You will have three minutes from the time your
  team is called to complete all runs

13
General Rules continued

• Ejecting your cargo (the batteries) receives a
  DNF for 0 points. This may be repeated by using
  your Mulligan.
• Competition will be held during class 13.1.
• Competitions will be held in the hallways of CVLB
  (tile floors) exact location TBA.
• All cars must prominently display your section
  number and team number. Failure to do so will
  result in a deduction from your score.

14
Grading of the Project

• Preliminary report - 20 points
• Trial results - 40 points
• Final Report 40 points

15
Final Report Content I

• Overall
• is well-organized into logical, separate report
  sections
• uses a clear system of highlighted headings to
  identify sections
• clear and concise
• Includes a Table of Contents which reference the
  sections

16
Final Report Content II

• Content
• begins with a clear introductory section
• thoroughly reviews the methods by which the
  product (the car) was developed
• documents the results of the test trials
• discusses (analyzes) the product's (car's)
  performance, indicating strengths and weaknesses
  and comparing expected results to actual results
  
• includes any conclusions or implications drawn
  from the work

17
Final Report Content III

• Writing Style
• uses clear sentences with active wording,
• uses well-structured paragraphs
• is consistent in style and flows well (doesn't
  sound like it was written by four different
  authors)
• uses general audience terms where possible and
  appropriate (no unnecessarily complex writing)
• no errors in grammar, spelling, and punctuation

18
Final Report Content IV

• Graphics
• 3-view construction sketches of your vehicle, as
  well as an isometric drawing.
• scaled orthographic drawings of each major
  component of your vehicle.
• must be titled and labeled (e.g. Figure 1
  Orthographic Views)
• must be referenced in the text and explained as
  needed

19
Final Report Guidelines I

• Overall It is well organized into logical
  sections using a clear system of highlighted
  headings to identify sections. It is clear and
  concise and includes a Table of Contents. You
  should use 12 point font size and double space.
• Content Introduction, methodology, test trials
  results, cost analysis, results, cars
  performance, and conclusions.
• Writing Style Uses clear sentences with active
  wording. Uses well-structured paragraphs. It is
  consistent in style and flows well (doesnt sound
  like it was written by four different authors).
  Uses general audience terms where possible and
  appropriate (no unnecessary complex writing). No
  errors in grammar, spelling, and punctuation.
• Graphics Must be titled and labeled (e.g.,
  Figure 1 Orthographic Views). Must be
  referenced in the text and explained as needed.

20
Final Report Guidelines II

• Final reports are due at the beginning of class
  14.2.
• Some teams may be asked to submit their car along
  with the final report, however you will be given
  notice prior to that day if your instructors
  would like to see your car again.

21
Other Information

• Specific questions about rules need to be
  addressed to either GR or PS instructors before
  construction begins.

22
Other Information

• Batteries must be AA carbon/zinc dry cells.
• Propeller must be guarded and the vehicle must
  not leave the ground.
• Extra points will be awarded if the vehicle can
  do a 360 spin at the start of the course.

23
Other Information

• Vehicle must fit in an 8.5 x 11 x 14 box.
• Maximum budget is 50.00.
• Must have a minimum of 3 wheels.
• No remote controls.
• All thrust must come from the action of the fan.