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FoilSim

Lift Relationships

Answers

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1. What is the value of lift for the original parameters? 0 pounds

 

2. Determine the Lift value for each of the prescribed Angle levels, while keeping the other values the same.

Angle
Lift
0 degrees
0.0 lb.
2 degrees
6.26 lb.
4 degrees
12 lb.
8 degrees
24 lb.
16 degrees
49 lb.

3. On the graph below, graph the values for Angle and Lift. (Place the Angle on the y-axis and the Lift On the x-axis.)

.Graph of angle of attack versus lift

 

4. What is the relationship between angle and lift? By doubling the angle, you double the lift. It is a linear relationship

 

5. Write an equation that will sum up this relationship. Lift = Angle x constant

 

6. Using FoilSim, and keeping the angle set at 4 degrees, determine the Lift values for the following Airspeeds.

Airspeed
Lift
25 mph
.78 lb.
50 mph
3.13 lb.
100 mph
12.5 lb.
200 mph
50 lb.

7. On the graph below, graph the values for Airspeed and the corresponding Lift levels.

 

Graph of airspeed versus lift

 

8. What is the relationship between the airspeed and lift? By doubling the airspeed, you quadruple the lift.

 

9. Write an equation that will sum up this relationship. Lift = Airspeed squared x constant


Related Pages:
Standards
Activity
Worksheet
Lesson Index
Aerodynamics Index

 

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Editor: Tom Benson
NASA Official: Tom Benson
Last Updated: Thu, Jun 12 04:47:13 PM EDT 2014

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