ASA Assembly & Rigging

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

C- Torque and directional control

2- The vertical flight of a helicopter is controlled by

A- collective pitch changes.

3- A reduction in anti-torque thrust will cause the

B- tail to pivot in the direction of torque rotation around the main rotor axis.

4- In rotorcraft external-loading, the ideal location of the cargo release is where the line of action passes

C- through the center of gravity at all times.

5- The acute angle formed by the chord line of a wing and the relative wind is known as the

C- angle of attack.

6- A helicopter in forward flight, cruise configuration, changes direction by

C- tilting the main rotor disk in the desired direction.

7- The purpose in checking main rotor blade tracking is to determine the

A- relative position of the blades during rotation.

8- In a hovering helicopter equipped with a tail rotor, directional control is maintained by

C- varying the pitch of the tail rotor blades.

9- If a single-rotor helicopter is in forward horizontal flight, the angle of attack of the advancing blade is

C- less than the retreating blade.

10- Main rotor blades that do not cone by the same amount during rotation are said to be out of

C- track.

11- 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.

12- Which statement is correct concerning torque effect on helicopters?

C- Torque direction is the opposite of rotor blade rotation

13- What is the purpose of the free-wheeling unit in a helicopter drive system?

A- It disconnects the rotor whenever the engine stops or slows below the equivalent of rotor RPM.

14- Movement about the longitudinal axis (roll) in a helicopter is effected by movement of the

B- cyclic pitch control.

15- Movement about the lateral axis (pitch) in a helicopter is effected by movement of the

B- cyclic pitch control.

16- Wing dihedral, a rigging consideration on most airplanes of conventional design, contributes most to stability of the airplane about its

A- longitudinal axis.

17- 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.

18- If a pilot reports that an airplane flies left wing heavy, this condition may be corrected by

A- increasing the angle of incidence of the left wing, or decreasing the angle of incidence of the right wing, or both.

19- If the vertical fin of a single-engine, propeller-driven airplane is rigged properly, it will generally be parallel to

B- the vertical axis but not the longitudinal axis.

20- An airplane which has good longitudinal stability should have a minimum tendency to

B- pitch.

21- As the angle of attack of an airfoil increases, the center of pressure will

C- move toward the leading edge

22- The angle of incidence is that acute angle formed by

B- a line parallel to the wing chord and a line parallel to the longitudinal axis of the aircraft.

23- An airplane's center of lift is usually located aft of its center of gravity

B- so that the airplane will have a nose-heavy tendency

24- An airplane is controlled directionally about its vertical axis by the

A- rudder.

25- The elevators of a conventional airplane are used to provide rotation about the

B- lateral axis.

26- Washing-in the left wing of a monoplane, for purposes of rigging corrections after flight test, will have what effect on the lift and drag of that wing?

B- Both drag and lift will increase due to increased angle of attack.

27- What type of flap system increases the wing area and changes the wing camber?

A- Fowler flaps.

28- 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.

29- The chord of a wing is measured from

C- leading edge to trailing edge.

30- When the lift of an airfoil increases, the drag will

B- also increase.

31- What physical factors are involved in the aspect ratio of airplane wings?

B- Span and chord.

32- Improper rigging of the elevator trim tab system will affect the balance of the airplane about its

A- lateral axis.

33- An airplane that has a tendency to gradually increase a pitching moment that has been set into motion has

A- poor longitudinal stability.

34- The purpose of wing slats is to

A- reduce stalling speed.

35- The angle of incidence of an airplane at rest

C- does not change when in flight.

36- Buffeting is the intermittent application of forces to a part of an airplane. It is caused by

B- an unsteady flow from turbulence.

37- Movement of an airplane along its lateral axis (roll) is also movement

C- around or about the longitudinal axis controlled by the ailerons.

38- The primary purpose of stall strips is to

B- stall the inboard portion of the wings first.

39- Rigging and alignment checks should not be undertaken in the open; however, if this cannot be avoided, the aircraft should be positioned

C- with the nose into the wind.

40- The correct dihedral angle can be determined by

C- using a dihedral board and bubble level along the front spar of each wing.

41- The dihedral angle of a wing may be measured by placing a straightedge and level protractor on the

A- front spar.

42- Where would you find precise information to perform a symmetry alignment check for a particular aircraft?

C- Aircraft service or maintenance manual.

43- Where is the buttock line or buttline of an aircraft?

C- A width measurement left or right of, and parallel to, the vertical centerline.

44- Where is fuselage station No. 137 located?

B- 137 inches aft of the zero or fixed reference line.

45- Proper wing twist in a sheet metal constructed wing can usually be checked by utilizing a

B- bubble level and special fixtures described by the manufacturer.

46- The vast majority of aircraft control cables are terminated with swaged terminals, that must be

C- checked with a go-no-go gauge before and after, to show compliance with the manufacturer's requirements after the swaging operation.

47- 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?

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

48- When inspecting a control cable turnbuckle for proper installation, determine that

C- the safety wire ends are wrapped a minimum of four turns around the terminal end shanks.

49- 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.

50- Which is an acceptable safety device for a castle nut when installed on secondary structures?

C- Cotter pin.

51- When used in close proximity to magnetic compasses, cotter pins are made of what material?

A- Corrosion resisting steel.

52- When a fiber or nylon insert-type, self-locking nut can be threaded on a bolt or stud through the insert with only the fingers, it should be

B- rejected.

53- The purpose of the vertical fin is to provide

...A- directional stability.

54- How are changes in direction of a control cable accomplished?

...A- Pulleys.

55- What is the smallest size cable that may be used in aircraft primary control systems?

...C- 1/8 inch.

56- After repairing or re-covering a rudder, the surface should be rebalanced

...C- to manufacturer's specifications.

57- Placing a piece of cloth around a stainless steel control cable and running it back and forth over the length of the cable is generally a satisfactory method of

...B- inspecting for broken wires.

58- The cable-operated control system of an all-metal aircraft, not incorporating a temperature compensating device, has been rigged to the correct tension in a heated hangar. If the aircraft is operated in very cold weather, the cable tension will

...A- decrease when the aircraft structure and cables become cold.

59- Very often, repairs to a control surface require static rebalancing of the control surface. Generally, flight control balance condition may be determined by

...B- the behavior of the trailing edge when the surface is suspended from its hinge points.

60- Excessive wear on both of the sides of a control cable pulley groove is evidence of

...A- pulley misalignment

61- Fairleads should never deflect the alignment of a cable more than

...C- 3°.

62- Where does the breakage of control cable wires occur most frequently?

...A- Breakage usually occurs where cables pass over pulleys and through fairleads.

63- With which system is differential control associated?

...B- Aileron.

64- Which statement concerning the 100-hour inspection of an airplane equipped with a push-pull tube-type control system is true?

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

65- If control cables are adjusted properly and the control surfaces tend to vibrate, the probable cause is

...A- worn attachment fittings.

66- 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.

67- Stability about the axis which runs parallel to the line of flight is referred to as

B- lateral stability.

68- The purpose of spring tabs or servo tabs is to

A- assist the pilot in moving the control surfaces.

69- If the control stick of an aircraft with properly rigged flight controls is moved rearward and to the left, the right aileron will move

C- down and the elevator will move up.

70- 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?

B- Upward regardless of elevator position.

71- If the control stick of an aircraft with properly rigged flight controls is moved forward and to the right, the left aileron will move

C- down and the elevator will move down.

72- If the travel of an airplane's controls is correct but the cables are rigged exceptionally tight, what probable effect will this have when flying the airplane?

B- The airplane will be heavy on the controls.

73- 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.

74- A universal propeller protractor used to measure the degrees of aileron travel should be zeroed

A- with the aileron in the NEUTRAL position

75- The universal propeller protractor can be used to measure

C- degrees of flap travel.

76- (Refer to Figure 8.) Identify the cable that is used in primary control systems and in other places where operation over pulleys is frequent.

C- 3

77- A tension regulator in the flight control cable system of a large all-metal aircraft is used primarily to

C- retain a set tension.

78- (Refer to Figure 9.) When the outside air temperature is 80°F, select the acceptable 3/16 cable tension range.

B- 117 pounds minimum, 143 pounds maximum.

79- Differential control on an aileron system means that

B- the up travel is more than the down travel.

80- Why is it generally necessary to jack an aircraft indoors for weighing?

B- So that air currents do not destabilize the scales.

81- Which should be accomplished before jacking an aircraft?

A- Install critical stress panels or plates.

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