|
|
+ Text Only Site
+ Non-Flash Version
+ Contact Glenn
|
|
|
|
Drag
Activity Answers
Glider
#
|
Mass
|
Fw
|
drag
at 2
|
drag
at 3
|
drag
at 4
|
drag
at 5
|
|
|
|
|
|
|
|
Radians
|
-------------
|
-------------
|
0.03491
|
0.05236
|
0.06981
|
0.08727
|
Formula
|
-------------
|
"b4 * 9.8
|
"c4*$d$2
|
"c4*$e$2
|
"c4*$f$2
|
"c4*$g$2
|
1.0
|
0.5
|
4.9
|
0.1710
|
0.2566
|
0.3421
|
0.4276
|
2.0
|
0.9
|
8.8
|
0.3079
|
0.4618
|
0.6158
|
0.7697
|
3.0
|
1.4
|
13.7
|
0.4789
|
0.7184
|
0.9578
|
1.1973
|
4.0
|
500.0
|
4900.0
|
171.0
|
256.6
|
342.1
|
427.6
|
5.0
|
900.0
|
8820.0
|
307.9
|
461.8
|
615.8
|
769.7
|
6.0 |
1400.0 |
13720.0 |
478.9 |
718.4 |
957.8 |
1197.3 |
|
|
|
|
|
|
|
- Compare the
drag between model glider 1 and the full-sized glider 4 for all four
angles. What conclusion can you draw?
Same ratio as ratio of masses.
- Based on your answer
in Question 1, would it be valid to use a model glider to study the
drag on a full-sized glider?
Yes
- What is the relationship
between glide angle and drag?
L/D = 1/2
aL = D
D=aL
Therefore, drag varies directly to angle.
|
Related Pages:
Standards
Activity
Worksheet
Lesson Index
Aerodynamics Index
|
|
|