Phase III, Block I - Airframes Flashcards
When does carbon/epoxy composite material become hazardous?
When material is broken and fiber is exposed.
What precautions must be observed when handling exposed or damaged materials?
Wear
- Respirator
- Goggles
- Close-weave cotton gloves
Where are the areas to avoid steeping on?
- Leading edge flaps
- Trailing edge flaps
- Horizontal stabilizers
- Ailerons
- Radome surfaces
To prevent damage to aircraft while towing, what stress panels must be installed?
- 1117
- 2121
- 2122
- 2332
- 2336
- 2348
- 2351
- Integrated Power Package (IPP) FS 518 drop link required to be connected
In regards to landing gear, what purpose does ground safety pins serve?
Secures nose and main landing gear in down position preventing gear retraction while on deck.
What is the purpose for aircraft plugs and covers?
Protect aircraft openings and protruding surfaces from physical and environmental damage and foreign object intrusion.
What is the purpose of the mooring subsystem?
Gives procedures for aircraft mooring?
How are mooring requirements determined?
Wind and weather conditions
In regards to aircraft mooring, where are the tie-down fittings on the aircraft?
- 2 on nose landing gear
- 3 on each of main landing gear
- 2 additional tie downs may be installed using structural access under each wing
What are the benefits for using composite materials?
- High strength to weight ratio
- Wear resistance
- Fatigue life
- Superior corrosion resistance compared to metal counterparts
What does the radome cover and provide?
Covers radar, and provides electrically transparent window for transmitting/receiving radar signals.
Where is the Forward Fuselage located?
End of radome to aft-edge of bulkhead station 270.
What is located within the Forward Fuselage?
- Canopy
- Cockpit
- Nose
- Landing gear
Where is the Upper Center Fuselage located?
Forward edge of bulkhead station 270 to aft-edge of bulkhead station 425.
Where is the Lower Center Fuselage located?
Forward edge of bulkhead station 270 to aft edge of bulkhead station 556 left and right.
What is located within the Upper and Lower Center Fuselage?
- Main landing gear
- Intake ducts
- External stores stations
- Fuselage fuel tanks
- Integrated Power Package (IPP)
Where is the Aft Fuselage located?
Bulkhead station 556 left and right to exhaust nozzle.
What is located within the Aft Fuselage?
- Engine
- Vertical stabilizers
- Horizontal stabilizers
- Arresting hook
What are the functions for the wings?
- Provides lift for aircraft
- Stores fuel
- House leading edge flaps, trailing edge flap and ailerons
What is the purpose for the outboard sections of the wings?
Folds for carrier operations and allows for attachment of pylons for weapons/stores.
What are the components included in the Flight Control System (FCS)?
- Pilots controls
- Dedicated displays and logic switching
- Transducer
- System dynamic and air data sensors
- Signal computation devices
- Transmission devices
- Actuators and signal transmission lines
Flight control command will result in control of what?
- Aircraft flight path
- Altitude
- Airspeed
- Air dynamic configuration
- Ride
- Structural modes
What are Ailerons used for?
Used in pairs to control aircraft in roll, or movement around longitudinal axis.
What is “rolling” or “banking”?
Shift in horizontal stabilizer, resulting in change of heading.
Leading Edge Flap (LEF) control subsystem receives input from what device?
Vehicle Management Computer (VMC)
The Vehicle Management Computer (VMC) consists of what components?
- Left Hand Electronic Unit
- Right Hand Electronic Unit
What is the functions of the Left Hand and Right Hand Electronic Units?
Controls and operates 2 wing Power Drive Units (PDUs) and supplies the Vehicle Management Computer (VMC) with management, Built-in Test (BIT), and health monitoring data.
What are flaps?
Hinged surfaces mounted on trailing edges of wings.
What are flaps used for?
- Reduce speed so aircraft can be safely flown and increase angle of descent for landing
(Shorten takeoff and landing distances)
What is a rudder?
Control surface, typically controlled by pedals.
What is a rudder used for?
Controls yaw (rotation of aircraft about vertical axis)
Where is the spoiler located?
Along leading edge flap.
What is the spoiler used for?
Extends into air stream creating drag and slowing airspeed.
What components make up the landing gear subsystem?
- Main and nose landing gear extension/retraction
- Wheel and brakes
- Nose wheel steering
- Position and warning
- Arresting gear
What does the Nose Landing Gear (NLG) strut assembly provide?
- Landing, take-off, taxi energy absorption, and tire/runway compliance.
Where is the Nose Landing Gear (NLG) located?
Underside of forward fuselage.
Where is the launch bar located?
Forward side of NLG shock strut.
What is the purpose of the launch bar?
Engages catapult, applying catapult tow forces to aircraft for launch.
What does the Nose Wheel Steering (NWS) provide?
Assists in giving aircraft directional control during taxiing and take-off procedure.
What device/component is used to control the nose wheel steering?
Rudder pedals located in cockpit.
Where is the Main Landing Gear (MLG) located when retracted?
Well at forward edge of wing outboard and above LH weapons bay.
In regards to the Main Landing Gear (MLG), the Main Wheel is attached to what component?
Axle, part of the piston of cantilevered shock strut.
In regards to the Main Landing Gear (MLG), where is the Drag Brace?
Attached to airframe with swivel fitting and to strut with rotating collar.
In regards to the Main Landing Gear (MLG), what is the purpose of the MLG trunion axis?
Rotates the piston and wheel during retraction.
In regards to the Main Landing Gear (MLG), what is the purpose of the actuator on the drag brace?
Unlocks the MLG for retraction and backs up drag brace locking mechanism.
In regards to the Main Landing Gear (MLG), what is the purpose of the retract actuator?
Attached to structure through a mechanism to increase structural integration.
In regards to the Main Landing Gear (MLG), what is the purpose of the Built-in Jack Adaptors?
Assist tire, wheel, and brake maintenance.
How are Main Landing Gear (MLG) brakes operated?
Independently with dual-redundant brake position sensors incorporated in rudder pedal assembly.
What is the Arresting Hook used for?
Flight deck operations, and emergency situations
The arresting hook can deploy at what velocity?
255 knots
The arresting hook can engage at what velocity?
175 knots
What is EHAS?
Electro Hydrostatic Actuating System
What is the by-product of the Electro Hydrostatic Actuating System?
Greatly reduces maintenance man-hours due to eliminating a number of components throughout airframe, such as hydraulic tubing and hose line.
Describe System A and System B.
- Systems operate independently
- Provide redundant hydraulic power for operation of selected utility and safety-critical functions on aircraft.
What is HPGS?
Hydraulic Power Generation System
What does the Hydraulic Power Generation System provide?
Fluid storage, fluid conditioning, system monitoring
The aircraft structure can be sectioned into what four major areas?
- Forward fuselage
- Upper center fuselage
- Lower center fuselage
- Aft fuselage
