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a/c engineering > Assembly and Rigging > Flashcards

Assembly and Rigging Flashcards

1
Q

The purpose of the vertical fin is to provide:

a. Directional stability
b. Longitudinal stability
c. Lateral stability

A

a. Directional stability

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2
Q
  1. A universal propeller protractor used to measure the degrees of aileron travel should be zeroed:

a. With the aileron in the NEUTRAL position
b. With the aileron in the DOWN position
c. When the aircraft is in a level flight attitude

A

a. With the aileron in the NEUTRAL position

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3
Q
  1. Other than the manufacturer maintenance manual what other document could be used to determine the primary flight control surface deflection for an imported aircraft that is reassembled after shipment?

a. Aircraft type certificate data sheet
b. Import manual for the aircraft
c. The certificate of airworthiness issued by the importing country

A

a. Aircraft type certificate data sheet

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4
Q
  1. If all instructions issued by the swaging tool manufacturer are followed when swaging a cable terminal, the resultant swaged terminal strength should be

a. The full rated strength of the cable
b. 80 percent of the full rated strength of the cable
c. 70 percent of the full rated strength of the cable

A

a. The full rated strength of the cable

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5
Q
  1. If control cables are adjusted properly and the control surfaces tend to vibrate, the probable cause is:

a. Worn attachment fittings
b. Oil can effects on the control surfaces
c. Excessive cable tension

A

a. Worn attachment fittings

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6
Q
  1. Fairleads should never deflect the alignment of a cable more than:

a. 12 degrees
b. 8 degrees
c. 3 degrees

A

c. 3 degrees

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7
Q
  1. Movement about the longitudinal axis (roll) in a helicopter is affected by movement of the:

a. Collective pitch control
b. Cyclic pitch control
c. Tail rotor pitch control

A

b. Cyclic pitch control

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8
Q
  1. What physical factors are involved in the aspect ratio of airplane wings?

a. Thickness and chord
b. Span and chord
c. Dihedral and angle of attack

A

b. Span and chord

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9
Q
  1. A reduction in anti-torque thrust will cause the:

a. Tail pivot in the opposite direction of torque rotation around the main rotor axis
b. Tail to pivot in the direction of torque rotation around the main rotor axis
c. Anti-torque system to become more efficient in the hover mode

A

b. Tail to pivot in the direction of torque rotation around the main rotor axis

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10
Q
  1. Which statement concerning the 100-hour inspection off an airplane equipped with a push-pull tube-type control system is true?

a. The threaded rod ends should not be adjusted in length for rigging purposes because the rod ends have been properly positioned and staked during manufacture..
b. The terminal end threads of the turnbuckles should be visible through the safety hole in the barrel.
c. The threaded rod ends should be checked for the amount of thread engagement by means of the inspection hole provided.

A

c. The threaded rod ends should be checked for the amount of thread engagement by means of the inspection hole provided.

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11
Q
  1. Main rotor blades that do not cone by the same amount during rotation are said to be out of:

a. Balance
b. Collective pitch
c. Track

A

c. Track

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12
Q
  1. An airplane which has good longitudinal stability should have a minimum tendency to:

a. Roll
b. Pitch
c. Yaw

A

b. Pitch

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13
Q
  1. Movement about the lateral axis (pitch) in a helicopter is effected by movement of the:

a. Collective pitch control
b. Cyclic pitch control
c. Tail rotor pitch control

A

b. Cyclic pitch control

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14
Q
  1. The chord of a wing is measured from:

a. Wingtip to wingtip
b. Wing root to the wingtip
c. Leading edge to trailing edge

A

c. Leading edge to trailing edge

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15
Q
  1. The purpose of spring tabs or servo tabs is to:

a. Assist the pilot in moving the control surfaces
b. Contribute to the static balance of the control surface
c. Make in-flight trim adjustments possible

A

a. Assist the pilot in moving the control surfaces

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16
Q
  1. Why is it generally necessary to jack an aircraft indoors for weighing?

a. So aircraft may be placed in a level position
b. So that air currents do not destabilize the scales
c. So weighing scales may be calibrated to 0 pounds

A

b. So that air currents do not destabilize the scales

17
Q
  1. Which is an acceptable safety device for a castle nut when installed on secondary structures?

a. Star washer
b. Lock washer
c. Cotter pin

A

c. Cotter pin

18
Q
  1. As the angle of attack of an airfoil increases, the center of pressure will:

a. Move toward the trailing edge
b. Remain stationary because both lift and drag components increase proportionally to increased angle of attack
c. Move toward the leading edge

A

c. Move toward the leading edge

19
Q
  1. During inspection of the flight control system of an airplane equipped with differential-type aileron control, side-to-side movement of the control stick will cause:

a. Each aileron to have a greater up travel (from the streamlined position) than down travel
b. Each aileron to have a greater down travel (from the streamlined position) than up travel
c. The left aileron to move through a greater number of degrees (from full up to full down) than the right aileron

A

a. Each aileron to have a greater up travel (from the streamlined position) than down travel

20
Q
  1. What nondestructive checking method is normally used to ensure that the correct amount of swaging has taken place when installing swaged-type terminals on aircraft control cable?

a. Check the surface of the swaged portion of the terminal for small cracks which indicate incomplete swaging
b. Measure the finished length of the terminal barrel and compare with the beginning length
c. Use a terminal gauge to check the diameter of the swaged portion of the terminal

A

c. Use a terminal gauge to check the diameter of the swaged portion of the terminal

21
Q
  1. Aircraft flight control trim systems must be designed and installed so that the:

a. Pilot can determine the relative position of the trim tab from the cockpit
b. Operating control and the trim tab will always move in the same direction
c. Trim system will disengage or become inoperative if the primary flight control system fails

A

a. Pilot can determine the relative position of the trim tab from the cockpit

22
Q
  1. Which statement is correct concerning torque effect on helicopters?

a. Torque direction is the same as rotor blade rotation
b. As horsepower decreases, torque increases
c. Torque direction is the opposite of rotor blade rotation

A

c. Torque direction is the opposite of rotor blade rotation

23
Q
  1. In a hovering helicopter equipped with a tail rotor, directional control is maintained by:

a. Changing the tail rotor RPM
b. Tilting the main rotor disk in the desired direction
c. Varying the pitch of the tail rotor blades

A

c. Varying the pitch of the tail rotor blades

24
Q
  1. Movement of the cockpit control toward the nosedown position during a ground operational check of the elevator trim tab system will cause the trailing edge of the trim tab to move in which direction?

a. Downward regardless of elevator position
b. Upward regardless of elevator position
c. Downward if the elevator is in the UP position and upward is the elevator is in the DOWN position

A

b. Upward regardless of elevator position

25
Q
  1. Where would you find precise information to perform a symmetry alignment check for a particular aircraft?

a. Aircraft Specification or Type Certificate Data Sheet
b. Manufacturer’s service bulletins
c. Aircraft service or maintenance manual

A

c. Aircraft service or maintenance manual

26
Q
  1. If the right wing of a monoplane is improperly rigged to a greater angle of incidence than designated in the manufacturer’s specifications, it will cause the:

a. Airplane to be off balance both laterally and directionally
b. Airplane to pitch and roll about the lateral axis
c. Right wing to have both an increased lift and a decreased drag

A

a. Airplane to be off balance both laterally and directionally

27
Q
  1. The universal propeller protractor can be used to measure:

a. Propeller track
b. Aspect ratio of a wing
c. Degrees of flap travel

A

c. Degrees of flap travel

28
Q
  1. One purpose of the freewheeling unit required between the engine and the helicopter transmission is to:

a. Automatically disengage the rotor from the engine in case of an engine failure
b. Disconnect the rotor from the engine to relieve the starter load
c. Permit practice of autorotation landings

A

a. Automatically disengage the rotor from the engine in case of an engine failure

29
Q
  1. An airplane that has a tendency to gradually increase a pitching moment that has been set into motion has:

a. Poor longitudinal stability
b. Good lateral stability
c. Poor lateral stability

A

a. Poor longitudinal stability

30
Q
  1. The primary purpose of stall strips is to:

a. Provide added lift at slow speeds
b. Stall the inboard portion of the wings first
c. Provide the added lift at high angles of attack

A

b. Stall the inboard portion of the wings first

31
Q
  1. The auxiliary (tail) rotor of a helicopter permits the pilot to compensate for and/or accomplish which of the following?

a. Attitude and airspeed
b. Lateral and yaw position
c. Torque and directional control

A

c. Torque and directional control

a/c engineering (1 decks)

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