WorksheetsReviewer Lesson No. 10 BALANCING AND RIGING 11-07 LC
Total questions: 20
Worksheet time: 10mins
Name
Class
Date
1.
What is the purpose of positive static stability in aircraft design?
a)
A. To improve fuel efficiency
b)
B. To assist in maintaining dynamic stability
c)
C. To decrease pilot workload
2.
What axis runs from wingtip to wingtip?
a)
A. Vertical axis
b)
B. Longitudinal axis
c)
C. Lateral axis
3.
Which movement is associated with the longitudinal axis?
a)
A. Yaw
b)
B. Roll
c)
C. Pitch
4.
The vertical axis affects which type of stability?
a)
A. Directional (Yaw)
b)
B. Lateral (Roll)
c)
C. Longitudinal (Pitch)
5.
What does static balance mean for a control surface?
a)
A. It resists movement during flight
b)
B. It is stable when rotated
c)
C. It stays still when supported at its center of gravity
6.
What indicates an underbalance in a control surface?
a)
A. Trailing edge goes up, minus sign
b)
B. Trailing edge goes down, plus sign
c)
C. Trailing edge goes down, minus sign
7.
What describes dynamic balance?
a)
A. The ability to balance during painting
b)
B. Static positioning of control surfaces
c)
C. Balanced forces in a rotating object to minimize vibration
8.
What type of static stability continues to move away from its original position after disturbance?
a)
A. Neutral static stability
b)
B. Negative static stability
c)
C. Positive static stability
9.
If an aircraft pitches up after turbulence and keeps pitching up, it shows:
a)
A. Neutral static stability
b)
B. Positive static stability
c)
C. Negative static stability
10.
What should be done if a control surface gains weight from repair?
a)
A. Replace the entire surface
b)
B. Ignore it
c)
C. Rebalance or check the balance
11.
Repainting an aircraft requires:
a)
A. No additional checks
b)
B. Balancing checks for control surfaces
c)
C. Replacing all surfaces
12.
An unbalanced control surface is:
a)
A. More efficient
b)
B. Aerodynamically stable
c)
C. Likely to be unstable and not streamlined
13.
In rebalancing, trim tabs must be:
a)
A. Removed
b)
B. Set in neutral
c)
C. Set in maximum deflection
14.
When balancing, the stand should be:
a)
A. Tilted slightly forward
b)
B. Covered in cloth
c)
C. Level and in a draft-free spot
15.
What is used to set the chord line level?
a)
A. Pressure gauge
b)
B. Bubble protractor
c)
C. Compass
16.
When checking dynamic balance, the control surface must:
a)
A. Be suspended by wires
b)
B. Rotate freely at the hinge points
c)
C. Stay locked in position
17.
What must be avoided during balance checks?
a)
A. Dust
b)
B. Bright light
c)
C. Friction
18.
Which axis is associated with pitch control?
a)
A. Vertical axis
b)
B. Lateral axis
c)
C. Longitudinal axis
19.
What happens in neutral static stability when disturbed?
a)
A. The aircraft returns to original position
b)
B. It continues to move away
c)
C. It stays in the new position
20.
What parts must be removed before balance if not part of the flight configuration?
a)
A. All trim tabs
b)
B. Non-permanent assemblies
c)
C. Entire control system
100 %
