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Questions and Answers
What is the device used to join cables and adjust the cable system tension?
What is the device used to join cables and adjust the cable system tension?
Tension Regulator
When you turn the control wheel to the left and right, which components are you moving?
When you turn the control wheel to the left and right, which components are you moving?
Ailerons.
What is the purpose of a pulley guard?
What is the purpose of a pulley guard?
The pulley guard protects the cable from coming off the pulley when the cable is slack.
What type of device is used to convert the cable and chain movement in the linear movement acting on the push/pull rod connected to the elevator trim tab on the Cessna Elevator Trim System discussed in class?
What type of device is used to convert the cable and chain movement in the linear movement acting on the push/pull rod connected to the elevator trim tab on the Cessna Elevator Trim System discussed in class?
Explain the pictures bellow relating to cable wear and describe indicate what cases the various types of wear?
Explain the pictures bellow relating to cable wear and describe indicate what cases the various types of wear?
What are the names of the 3 elements or sections of any of the Flight Control Systems?
What are the names of the 3 elements or sections of any of the Flight Control Systems?
Which type of Control Cable is most widely used for Primary Flight Control Systems?
Which type of Control Cable is most widely used for Primary Flight Control Systems?
When you are inspecting a Pulley and you find that the pattern of the cable has been pressed into the groove of the pulley, what does this indicate?
When you are inspecting a Pulley and you find that the pattern of the cable has been pressed into the groove of the pulley, what does this indicate?
When looking at the basic general aviation three cabled control system what is the name of the cable that runs from the right hand aileron bell-crank all the way over to the left hand aileron bell-crank?
When looking at the basic general aviation three cabled control system what is the name of the cable that runs from the right hand aileron bell-crank all the way over to the left hand aileron bell-crank?
What is the purpose of the small hole drilled in the body of the spherical rod end assembly in this diagram?
What is the purpose of the small hole drilled in the body of the spherical rod end assembly in this diagram?
Where are the two places that you can find the control travel limits for an aircraft?
Where are the two places that you can find the control travel limits for an aircraft?
When performing maintenance such as control system rigging, which documents must be in their most current and up to date status?
When performing maintenance such as control system rigging, which documents must be in their most current and up to date status?
When you are checking the aileron control surface travel, what position should it be in to start the process?
When you are checking the aileron control surface travel, what position should it be in to start the process?
In accordance with the generic and the fixed and rotary wing aircraft type specific rigging instructions discussed in class, during the adjustment of the control system which tasks is carried out First.
In accordance with the generic and the fixed and rotary wing aircraft type specific rigging instructions discussed in class, during the adjustment of the control system which tasks is carried out First.
In accordance with the generic and the fixed and rotary wing aircraft type specific rigging instructions discussed in class, what are the basic steps in their order provided in class?
In accordance with the generic and the fixed and rotary wing aircraft type specific rigging instructions discussed in class, what are the basic steps in their order provided in class?
According to the Generic Rigging Instructions if we have too much control surface travel in one direction and correct in the other direction during our surface travel check how is this rectified?
According to the Generic Rigging Instructions if we have too much control surface travel in one direction and correct in the other direction during our surface travel check how is this rectified?
During the rigging of the transmitting system, what are the devices used to ensure that the components of the transmitting and input system remain in the neutral position during the rigging process?
During the rigging of the transmitting system, what are the devices used to ensure that the components of the transmitting and input system remain in the neutral position during the rigging process?
When do the regulations require a dual/independence inspection carried out and by whom?
When do the regulations require a dual/independence inspection carried out and by whom?
How do you certify the rigging of a flight control system in Canada?
How do you certify the rigging of a flight control system in Canada?
What does the term "Fit" mean when describing the dual inspection?
What does the term "Fit" mean when describing the dual inspection?
What does the term "Safety” mean when describing the dual inspection?
What does the term "Safety” mean when describing the dual inspection?
What does the term “Sense of Motion” mean when describing the dual inspection?
What does the term “Sense of Motion” mean when describing the dual inspection?
When you check for “Wash Out” during the Symmetry Check, what are you inspecting?
When you check for “Wash Out” during the Symmetry Check, what are you inspecting?
When you check for “Wing Dihedral” during the Symmetry Check, what are you inspecting?
When you check for “Wing Dihedral” during the Symmetry Check, what are you inspecting?
When you check for “Boxing Check” during the Symmetry Check, what are you inspecting?
When you check for “Boxing Check” during the Symmetry Check, what are you inspecting?
What is the name and purpose of this helicopter control device?
What is the name and purpose of this helicopter control device?
What is the name of this inverted triangular shaped device circle at the bottom of this picture?
What is the name of this inverted triangular shaped device circle at the bottom of this picture?
What is the name of these units?
What is the name of these units?
Which helicopter control will increase and decrease the lift equally throughout the rotation of the blades to increase or decrease lift & thrust?
Which helicopter control will increase and decrease the lift equally throughout the rotation of the blades to increase or decrease lift & thrust?
Which helicopter control will increase and decrease the lift differently throughout the rotation of the blades to tilt the rotor disk for directional control?
Which helicopter control will increase and decrease the lift differently throughout the rotation of the blades to tilt the rotor disk for directional control?
What is the name of the helicopter flight control used to compensate for the force created by the engine driving the main rotor system?
What is the name of the helicopter flight control used to compensate for the force created by the engine driving the main rotor system?
What is the name of the device that transmits linear movements from the Cyclic & Collective Pitch controls to the rotating mast and rotor head
What is the name of the device that transmits linear movements from the Cyclic & Collective Pitch controls to the rotating mast and rotor head
When pulling up on the collective pitch control, what is the equal and opposite reaction to the force of the engine?
When pulling up on the collective pitch control, what is the equal and opposite reaction to the force of the engine?
Engine power control is attached to or is a part of which flight control system on the helicopter?
Engine power control is attached to or is a part of which flight control system on the helicopter?
What is the purpose of the “Sprag Clutch Assembly” Or “Free Wheeling Unit" on a Helicopter?
What is the purpose of the “Sprag Clutch Assembly” Or “Free Wheeling Unit" on a Helicopter?
According to the instructions for Autorotation Test Flights, what pieces of information are required to be recorded during the Autorotation Decent?
According to the instructions for Autorotation Test Flights, what pieces of information are required to be recorded during the Autorotation Decent?
During the Autorotation Speed Calculation, what are the three parameters that you require to determine if the rotor RPM is correct based upon the Autorotation Chart?
During the Autorotation Speed Calculation, what are the three parameters that you require to determine if the rotor RPM is correct based upon the Autorotation Chart?
After completing the calculations using the information gathered and the autorotation chart, what would be the action required if the rotor speed was too high or what would be required if it were too low?
After completing the calculations using the information gathered and the autorotation chart, what would be the action required if the rotor speed was too high or what would be required if it were too low?
What is the name and purpose of this helicopter control device? The [blank] is used to control the helicopter's pitch and roll.
What is the name and purpose of this helicopter control device? The [blank] is used to control the helicopter's pitch and roll.
What is the name and purpose of this helicopter control device? The device is called the [blank] and its purpose is to control the helicopter's altitude.
What is the name and purpose of this helicopter control device? The device is called the [blank] and its purpose is to control the helicopter's altitude.
What is the name and purpose of this helicopter control device? The device is called a [blank].
What is the name and purpose of this helicopter control device? The device is called a [blank].
Flashcards
Cable Pattern pressed into pulley groove
Cable Pattern pressed into pulley groove
Cable must be replaced.
Cable connecting Aileron Bell-cranks
Cable connecting Aileron Bell-cranks
Drag cable (runs from right to left aileron bellcrank).
Small hole in spherical rod end assembly
Small hole in spherical rod end assembly
To allow moisture to drain and prevent corrosion.
Finding control travel limits.
Finding control travel limits.
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Documents for control system rigging
Documents for control system rigging
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Aileron Surface Position
Aileron Surface Position
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Study Notes
Control Cable System Fundamentals
- A turnbuckle joins cables and adjusts cable system tension.
- Turning the control wheel left and right moves the ailerons.
- A pulley guard prevents the cable from slipping off the pulley.
- A sector converts the cable and chain movement into linear movement on the Cessna Elevator Trim System's push/pull rod.
Cable Wear
- Picture a shows normal wear.
- Picture b shows corrosion.
- Picture c shows fraying.
- Picture d shows wear caused by improper cable tension.
- Picture e shows kinked cable wear.
Flight Control Systems
- The three elements or sections of flight control systems are:
- Input
- Transmitting
- Output
Control Cables
- 7x19 control cable is most widely used for primary flight control systems.
- A cable pattern pressed into the pulley groove indicates the pulley is worn or the cable tension is incorrect.
- The cable that runs from the right-hand aileron bell-crank to the left-hand aileron bell-crank in a basic general aviation three-cabled control system is the "cable".
- The small hole drilled in the body of a spherical rod end assembly is for lubrication (or visual indication of proper thread engagement).
Flight Control System Rigging
- Control travel limits can be found in:
- The aircraft's Type Certificate Data Sheet (TCDS)
- The Aircraft Maintenance Manual (AMM)
- Up-to-date documents for control system rigging maintenance include:
- Aircraft Maintenance Manual (AMM)
- Service Bulletins (SB)
- Airworthiness Directives (AD)
- Aileron control surface travel should be checked with the control surface in the neutral position
Control System Adjustment
- During control system adjustment, tasks carried out includes setting cable tension first.
- Basic rigging steps in order are:
- Securing the aircraft
- Leveling the aircraft
- Setting control surface neutral
- Adjusting cable tension
- Checking travel
Rigging Instructions
- Too much control surface travel in one direction and correct travel in the other during a surface travel check is rectified by adjusting the appropriate control stops or turnbuckles.
- Devices used to ensure components remain in neutral during transmitting system rigging include:
- Control surface locks
- Alignment jigs
- Measuring devices
Dual/Independence Inspections
- Regulations require a dual/independence inspection after major flight control system maintenance or alterations, and it is performed by two qualified individuals.
Flight Control System Certification in Canada
- Rigging a flight control system in Canada is certified by a licensed Aircraft Maintenance Engineer (AME).
Dual Inspection Definitions
- Fit: Indicates the proper engagement and alignment of components.
- Safety: Indicates the reliability and security of the flight control system.
- Sense of Motion: How the controls respond to input.
- Range of Motion: Indicates the full and unobstructed movement of the control surfaces throughout their specified range.
Aircraft Symmetry Checks
- "Wash Out" inspection during a symmetry check examines the wing twist.
- "Wing Dihedral" inspection during a symmetry check examines the upward angle of the wings.
- "Boxing Check" during the symmetry check verifies the alignment of the primary flight control surfaces.
Helicopter Flight Controls and Components
- Device in picture 27 is a pitch link which adjusts blade pitch.
- Device in picture 28 is a swashplate which translates the pilot's control inputs to the rotor blades.
- Device in picture 29 is a collective pitch control, which controls the pitch angle of all rotor blades simultaneously.
- The function of device in picture 30 could not be determined.
Helicopter Components
- The inverted triangular shaped device in picture 31 is the collective pitch horn.
- The units in picture 32 are hydraulic servos.
- Collective control increases/decreases lift equally throughout blade rotation to raise/lower the helicopter.
- Cyclic control increases/decreases lift unevenly to tilt the rotor disk for directional control.
Helicopter Flight Control
- The flight control compensating for engine torque is the tail rotor.
- The device transmitting linear movements from the cyclic and collective pitch controls to the rotating mast and rotor head is the swashplate.
Collective Pitch
- The equal and opposite reaction to the force of the engine when pulling up on the collective is the downward force on the tail rotor.
- Engine power control is attached to or part of the collective pitch control system on the helicopter.
- A sprag clutch/freewheeling unit allows the rotor to continue turning even if the engine fails.
Autorotation Chart Application (Week 5 - M)
- Information to be recorded during autorotation descent includes:
- Altitude
- Airspeed
- Rotor RPM
- Parameters required to determine if rotor RPM is correct based on an autorotation chart are:
- Gross weight
- Pressure altitude
- Outside air temperature
- If the rotor speed is too high, increase collective pitch; if too low, decrease collective pitch.
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