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Aerodynamics Technology30 Hour - Part 1Student Workbook
Issue: US180/30/2a-IQ-0201a
Copyright 2004, LJ Technical Systems. No part of thisPublication may be adapted or reproduced in any material form,without the prior written permission of LJ Technical Systems.
Lesson Module: 73.18/3
Written by: LJ Technical Dept
Aerodynamics Technology (30 hour) - 73.18 Student Workbook
LJ Technical Systems SW1.1
Assignment 1 Introduction to Aerodynamics
CUT FOLD
Rectangle A
Rectangle B
Fold
Assignment 3 Introduction to Drag
Record the reading on the DRAG meter in the table, every time you add a mass.
Mass (g) Drag Meter Reading (V)0
20406080100
Table 3.1 - Drag meter reading in V
Aerodynamics Technology (30 hour) - 73.18 Student Workbook
LJ Technical Systems SW1.2
Plot a graph of volts against grams. Use graph 3.1 for this.
0 . 5
1
2
3
4
5
6
7
8
9
1 0
0 5 1 0 1 5 2 0 2 5 3 0 3 5 4 0 4 5 5 0 5 5 6 0 6 5 7 0 7 5 8 0 8 5 9 0 9 5 1 0 0
0
( V )
( g )
1 . 5
2 . 5
3 . 5
4 . 5
5 . 5
6 . 5
7 . 5
8 . 5
9 . 5
R A N G E 4
Graph 3.1
Assignment 4 Computers and the Wind Tunnel
Using table 4.1, write down the value of drag shown on the computer screen for each dragpanel. Also, enter the height and width of each panel and calculate the area.
Panel Height(Inches)
Width(Inches)
Area(Square Inches)
Drag(oz)
ABCDEF
Aerodynamics Technology (30 hour) - 73.18 Student Workbook
LJ Technical Systems SW1.3
Plot a graph of facing area against drag for the measurements you have made.
Graph 4.1 - Facing area against drag
Assignment 5 Dragging On
Using table 5.1, write down the value of drag shown on the computer screen for each vehicle:
Vehicle Type Drag (oz)Station WagonSedanSports carTable 5.1 - Drag caused by various vehicles
Assignment 6 Keeping Vehicles on the Ground
Record the values of downforce in table 6.1:
Mass (g) Downforce (oz)020406080100
Table 6.1 - Mass creating downforce
Aerodynamics Technology (30 hour) - 73.18 Student Workbook
LJ Technical Systems SW1.4
Using the values in table 6.1, plot a graph of downforce in ounces, against massin grams.
Graph 6.1 - Graph of mass against downforce
Record the values of downforce and drag, when the angle of attack is -15°, in table 6.2:
Wind Speed (mph) DownForce (oz) Drag (oz)051015202530
Table 6.2 - Downforce and drag of a spoiler at 15°
Using the values in table 6.2, plot a graph of wind speed (mph) against downforce (oz), andwind speed against drag.
Graph 6.2a - Wind speed against downforce Graph 6.2b - Wind speed against drag
Aerodynamics Technology (30 hour) - 73.18 Student Workbook
LJ Technical Systems SW1.5
Assignment 7 Vehicle Design
Enter the road test results in table 7.1
Test Results for: Initial Vehicle Design Predefined Criteria VehicleDrag Total¼ Mile Top Speed¼ Mile TimeMpgCruising Range
Table 7.1 - Road test results for two vehicle designs
Assignment 8 Meeting a Vehicle Design Criteria
Enter the choice of components for your car in table 8.1
Component ChoiceChassisEngineTransmissionFuel TankSteering and SuspensionTires and BrakesTable 8.1 - Component list for vehicle design
Enter the information from the report for your car in table 8.2.
Cruising RangeMaximum SpeedSeating CapacityEngine LocationTable 8.2 - Vehicle performance information
Aerodynamics Technology (30 hour) - 73.18 Student Workbook
LJ Technical Systems SW1.6
Assignment 9 Stick to the Ground
Enter the drag and lift values at a 25 mph wind speed for the standard car and spoiler car intable 9.1.
Standard Car Car with SpoilerDrag (oz)Downforce (oz)
Table 9.1 - Comparing a car with and without a spoiler
Assignment 12 Angles of Attack
Enter the lift values, for the flat, cambered, and symmetrical wing in table 12.1
Angle (°) Lift fromFlat Wing (oz)
Lift fromCambered Wing (oz)
Lift fromSymmetrical Wing
(oz)010203040506070
Table 12.1 - Lift for different wings at various angle of attack
Graph 12.1 - Lift against angle of attack for various wings
Aerodynamics Technology (30 hour) - 73.18 Student Workbook
LJ Technical Systems SW1.7
Assignment 14 Aspect Ratio and Span
Enter your lift values for the constant chord length wing in table 14.1
CONSTANT (2") CHORD LENGTH, WINGWING SPAN" LIFT AT 5 mph (oz) LIFT AT 25 mph (oz)
4567
Table 14.1 - Constant chord length wing
Enter your lift values for the constant span wing in table 14.2
CONSTANT (3") WING SPANCHORD LENGTH" LIFT AT 5 mph (oz) LIFT AT 25 mph (oz)
3456
Table 14.2 - Constant wing span wing
Aerodynamics Technology30 Hour - Part 2Student Workbook
Issue: US180/30/2b-IQ-0201a
Copyright 2004, LJ Technical Systems. No part of thisPublication may be adapted or reproduced in any material form,without the prior written permission of LJ Technical Systems.
Lesson Module: 73.18/3
Written by: LJ Technical Dept
Aerodynamics Technology (30 hour) - 73.18 Student Workbook
LJ Technical Systems SW2.1
Assignment 16 Turbulent Air Around a Wing
Enter the lift values for the flat wing in table 16.1, and plot a graph of the results:
Angle of Attack (°) Lift (oz)0
10203040506070
Table 16.1 - Identifying the stall point
Graph 16.1 - Angle of attack against lift
Aerodynamics Technology (30 hour) - 73.18 Student Workbook
LJ Technical Systems SW2.2
Assignment 17 Basic Aircraft Design - Paper Plane Manta Ray Template:
Aerodynamics Technology (30 hour) - 73.18 Student Workbook
LJ Technical Systems SW2.3
Record the control surface names on the diagram of the aircraft.
Assignment 19 Propeller Power
Complete the table for force generated by 2 and 4 blade propellers:
Wind Speed (mph) Force from 2blades (oz)
Force from 4 blades(oz)
51015202530
Table 19.1 - Force produced by different blades
Aerodynamics Technology (30 hour) - 73.18 Student Workbook
LJ Technical Systems SW2.4
Assignment 22 Aerodynamics and Aircraft - Summary
Complete the grid and identify the word in the shaded squares:
1
2
3
4
5
6
7
8
The shaded squares contain the word _________________.
Plot a graph of the average wind speed, throughout the year, on graph 22.1:
Graph 22.1 Average wind speed throughout the year
Assignment 23 Building Design
Enter the drag readings for the square shaped building in table 23.1:
Building Angle (°) Drag (oz)0153045
Table 23.1 - Drag on square shaped building
Aerodynamics Technology (30 hour) - 73.18 Student Workbook
LJ Technical Systems SW2.5
Assignment 24 Solving Building Design Problems
Write down the drag reading on each of the cylinders in table 24.1:
Height (Inches) Drag (oz)1234
Table 24.1 - Drag from cylindrical structures
Assignment 25 Bridges
The bridge section becomes unstable at .........mph.
Write down the wind speed reading for the bridge section when it oscillates uncontrollably,with the aerodynamic panels attached:
With the leading edge panel attached: .............mph
With both the leading edge and trailing edge panels attached: ............. mph
Assignment 26 Bridges with Problems
Design BriefWrite down the design brief in your own words.
...........................................................................................................................................................................
...........................................................................................................................................................................
...........................................................................................................................................................................
...........................................................................................................................................................................
...........................................................................................................................................................................
The total surface area of the bridge section (excluding the end sections) is:___________.
Alternative SolutionsWrite down a fifth alternative solution.
...........................................................................................................................................................................
...........................................................................................................................................................................
Aerodynamics Technology (30 hour) - 73.18 Student Workbook
LJ Technical Systems SW2.6
Choice of SolutionGive the advantages and disadvantages for possible solution.1) Alter the leading and trailing edges of the road surface....................................................................................................................................................................................................................................................................................................................................................................2) Enclose the leading and trailing section in semi-cylinders....................................................................................................................................................................................................................................................................................................................................................................3) Cover the road in a semi-cylinder....................................................................................................................................................................................................................................................................................................................................................................
4) Enclose the entire bridge in a box section.................................................................................................................................................................................................................................................................................................................................................................... 5) ........................................................................................................................................................................................................................................................................................................................................................................................................................................................
Aerodynamics Technology (30 hour) - 73.18 Student Workbook
LJ Technical Systems SW2.7
Test and EvaluationDraw on each alternative solution the airflow around the bridge section.
Assignment 28 Designing a Flying Machine
Make a list of alternative solutions, together with their advantages and disadvantages,in table 28.1:
Alternative Solutions:1)2)3)4)Table 28.1 – Alternative Solutions
Aerodynamics Technology (30 hour) - 73.18 Student Workbook
LJ Technical Systems SW2.8
Write down some of your choices of solutions from the alternatives you have considered.
Solution 1 Solution 2 Solution 3 Solution 4
Calculate the weight of the materials you are going to use.
DESCRIPTION WEIGHT1. Preformed fuselage2. Card3. Elastic band4. Propeller5. Wing/tail template6. Balloons7. Sticky tape8. Undercarriage9. Thread
TOTAL WEIGHT OF MATERIALS:..........including glue,tape and elastic band.
Make any notes that will be useful:......................................................................................................................................................................................................................................................................................................................................................
Sketch the plane you are going to build, labeling the important features.
Aerodynamics Technology (30 hour) - 73.18 Student Workbook
LJ Technical Systems SW2.9
Assignment 30 Fantastic Future, Fancy a Job ?
Sketch the layout of your magazine article in the space provided:
Aerodynamics Technology (30 hour) - 73.18 Student Workbook
LJ Technical Systems SW2.10
Create the article within the area shown: