Navy AM ch. 16 fixed wing flight control
Terms
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- what type of flight control provides additional lift during takeoff and landing?
- Secondary flight control
- What type of flight control system is used on high-speed jet aircraft?
- Power boost flight control system
- What type of pressure supplies the force necessary to operate the control surface in a full power operated system
- Hydraulic pressure
- On small or low speed aircraft, cockpit flight conrols are connected directly to control surfaces by what means
- Cables or pushrods
- On high speed aircraft, what components aid the pilot in moving the flight control surface
- Hydraulic actuators
- Current specifications call for what type of power source or emergenct operation of a primary fight control system
- Independent hydraulic power source
- In an elevator system, what component ports hydraulic pressure to the power cylinder
- the control valves
- With the stabilizer trimmed nose down, what action does the load feel bungee add on the elevator
- Nose down attitude
- Stabilizer trim deflection on an S-3 aircraft is from how many degrees down to up
- -6 degrees down to +1 degree up
- What is the maximum surface deflection each stabilator on an F/A-18 aircraft
- 10.5 degrees trailing edge down to 24 degrees trailing edge up
- Full throw of a pilot's control stick raises the inboard flaperons how far
- 49.5 degrees
- Full throw of the pilot's control stick raises the outboard flaperons how far
- 53 degrees
- All four flaperons will automatically pop up approximately how many degrees when the aircraft has weight on wheels and the throttles are retarded
- 41 degrees
- What combined flight control system achieves an increased roll rate about the longitudinal axis
- Aileron and Spoiler deflection system
- What causes the spoiler deflectors to open
- Upward movement of the aileron
- What control system provides a means of controlling an aircraft about its vertical axis
- Directional control system
- When is a backup flight control system activated
- Whenever a partial or complete hydraulic failure occurs
- At what pressure does the backup hydraulic system get activated
- When pressure is decreased from 700 to 900 psi.
- When does the backup flight control system perform as an isolated system
- When the flight and combined systems fail
- What must be done to a flight control hydraulic component when it is found to be contaminated
- It must be removed and replaced
- When an aircraft has a discrepancy with the flight controls system when is the aircraft released for further flights
- When the discrepancy has beed determined and corrected
- What corrective action often results in a repeat discrepancy or loss of aircraft
- "could not duplicat" or "replaced suspected component"
- Maintenance of the primary flight control power actuator is generally beyond the capability of what maintenance level
- O level maintenance
- What will ensure proper response of a flight control surface
- Correct cable tension
- How many control cables are there in a simple cable system
- one
- Other than periodical inspections, what else must be done to a control cable
- It must be kept clean
- What is the maximum number of broken wires allowed in a 1 inch length of a 7 x 7 cable
- six broken wires
- What is the maximum number of broken wires allowed per inch on a control cable passing over pulleys, drums, or through a fairlead
- three
- What is the purpose of a quick disconnect in a cable system
- used for freAuent disconnecting
- A simple rigid control system consists of what components
- push pull rods and bell cranks
- After installing a new push pull rod in a flight control system, what must be done to the control surface
- it must be checked for correct travel
- what is the purpose of a bell crank and a walking beam
- to change direction of motion when the airframe does not permit a straight run
- what is the purpose of a double spring bungee
- to protect against both overtension and overcompression
- the purpose of rigging and adjusting a primary flight control system is to regulate and limit surface deflection in both directions. what other purpose does it serve
- it ensures neutral alignment of all connecting components
- a tensiometer is inaccurate for measuring cable tension under how many pounds
- 30
- what is the actual tension on a 3/16 inch diameter cable if a No.2 riser is used and the dial on the tensiometer reads 48
- 100 pounds
- when the control column is in neutral, the trailing edge of the control surface should be aligned to what degree on the throwboard scale
- zero
- with the aft sector rig pin in place, the elevators read 5 degrees above zero. what must you do to correct this
- lengthen the push pollrod until the elevator trailing edge reads zero
- a 1/8 inch flight control cable is composed of how many strands and wires
- seven strands and nineteen wires each
- what tools can be used to cut a small diameter cable
- heavy duty diagonal cutters, side cutters, or a pair of wire nippers
- what is the most satisfactory method of cutting a cable
- a cable cutting machine
- to achieve the most efficient operation when seating a cable end fitting, you must use a 3/8 inch air line with at least how many pounds of pressure
- minimum of 90 pounds of pressure
- what manual contains info on proof testing various size cables
- NAVAIR 01-1A-8
- what components connect the wing flaps to the main wing assembly
- connected by various kinds of hingers and slides
- what is the purpose of the relief valve located in the prssure line ahead of the flap normal system selector valve
- relieves pressure from thermal expansion
- in a leading/trailing edge flap system, what is the full down deflection of the trailing edge flap
- 60 +1, -2 degrees
- what component provides the power source for the emergency flap system
- a 300 cubic inch bottle charged to 3000 psi
- what component of the wing flap system shifts rotary motion to linear motion
- flap actuator
- moving the flap control handle to the TAKEOFF position will move the slats to what position
- 27.5 degree leading edge down
- the wing control system provides high lift and drag forces for takeoff and landings. what other advantages does the wing control system provide
- increased lift for maneuvering and, at supersonic speeds, aerodynamic lift to reduce trim drag
- when is the only time a wing sweep self test can be performed
- when the wings are overswept
- what flight control is used to slow down the aircraft speed by increasing the profile drag
- speed brakes
- what type of switch is used to control the aileron trim system
- a five position, four throw, momentary ON contact switch with a center OFF position
- how does an aircraft that does not have trim tabs achieve lateral trim
- by repostioning the lateral control surfaces as necessary to achieve a balanced lateral flight condition.
- how is lingitudinal trim achieved on an aircraft that has movable horizontal stabilizers and elevators
- by changing the incidence of the stabilizer
- who must supervise the removal and installation of a wing assembly
- a senior petty officer
- what is the first step theperson in charge must perform before installing a new wing assembly
- check the identification tag to make sure it is the correct repleacement unit
- many of the general precautions listed under the removal and installation of what component apply to the removal and replacement of a stabilizer
- wing assembly
- what tool is used for removing the piano wire of a flight control surface
- a hand drill
- when istalling a flight control surface what tool is used to ensure that the hinge holes are properly aligned
- drift pin
- why is the alignment of an airframe important
- it is directly related to the aerodynamic performance of the aircraft
- how are flight control surfaces balanced at the time of manufacturer
- by adding weights to the inside of the leading edge of the control surface
- what must be accomplished prior to performing ad alignment check on an aircraft
- the aircraft must be level both laterally and longitudially
- what is used to control the attitude of and aircraft during an alignment check
- jacks
- haw many different reference points are used during transit leveling
- four, two longititudinal and two lateral
- when is an aircraft level when using the plumb bob method of leveling
- when the plumb bob pointer is at 0 degrees on the datum plate
- in what configuration must an sircraft be before a wing twist check can be performed
- the wings must be folded and the aircraft leveled laterally