Rotor System Flashcards
What does CH-47F stand for?
Chinook Helicopter Model F
The CH-47F is a twin-engine, tandem rotor heavy-lift helicopter used by the U.S. Army.
What is the purpose of the IPC?
Instructional Product Code
The IPC is used for tracking training materials and ensuring proper instructional standards.
What must a country do to instruct international military students on the CH-47F?
- Purchase equipment through FMS. 2. Have an accepted clearance under a general security agreement with the US.
What are the components of the rotary wing head control system?
- Slider Shaft 2. Swashplate Assembly 3. Actuators 4. Fixed Links 5. Pitch Change Links.
What is the function of the Centrifugal Droop Stops?
Limits blade droop at low RPMs.
What is the evaluation method for students during the training?
Written examination requiring a GO on each scorable unit, with 90 minutes allotted.
What does the Pitch Change Link do?
Transmits blade pitch changes from the rotating ring of the swashplate to the pitch varying housing on the rotor head.
What environmental considerations must be followed?
- Comply with environmental laws. 2. Prevent pollution at the source. 3. Conserve natural resources.
What are the major components of the swashplate?
- Stationary Ring 2. Rotating Ring 3. Uniball 4. Bearing Assembly.
Fill in the blank: The _______ controls the rate and limits the amount of lead and lag for the blade assemblies.
Blade Shock Absorber
True or False: There are specific safety considerations for the CH-47F rotor systems lesson.
False
What component connects the Pitch Varying Housing to the Pitch Varying Shaft and allows for Feathering?
Tie Bar
How many separate oil lubrication tanks does each rotor head contain?
Seven
What is the proper procedure in the event of severe weather or a tornado?
Exit classroom orderly, move to designated location, and hold accountability formation.
What does a rotor blade drooping significantly lower than the others indicate?
A Missing Droop Stop
What is the function of the Blade Shock Absorber?
Absorbs shock and stabilizes the rotor blade during flight.
What is used to pull the balance arm outward as the RRPM increases from Ground to Flight?
The Weight on the balance arm
What are the operational characteristics of the rotary wing blades?
- Lift generation 2. Control of pitch 3. Stability during flight.
What is the environmental restriction regarding lightning protection?
Avoid flight in or near thunderstorms if any lightning cables or straps are missing or broken.
What are the major components of the rotor head assembly?
- Rotor Hub Assembly 2. Horizontal Hinge Pin 3. Tie Bar 4. Pitch Varying Shaft 5. Pitch Varying Housing 6. Vertical Hinge Pin 7. Lubrication System.
What is the purpose of the lubrication system in the rotor head?
To ensure smooth operation and prevent wear of mechanical components.
Fill in the blank: The _______ must be closed when temperatures are above -1 ºC.
Blade Shock Absorber Vent Valve
What is the primary flight condition to avoid if lightning cables and straps are damaged or missing from the rotor blade?
Flight near Thunderstorms
This is crucial to prevent electrical hazards during flight.
What lightning protection components on the rotor blades are checked on preflight?
Lightning cables at the root end of the blade, and the straps on top and bottom of the blade
These components are vital for the safety of rotor operations.
