ROTORS Flashcards
What is the purpose of the Fixed Droop Stops?
Limit the droop of the blades
Fixed droop stops help maintain rotor blade position during flight.
Which component in the rotor system uses commands from the FCCs of the DAFCS to provide inputs to the rotor system?
LCT Actuators
LCT stands for Longitudinal Control Transducer.
Name the three actuators that are connected to the stationary ring of the swashplate.
- Swiveling Dual boost actuator
- Pivoting dual boost actuator
- LCT
What is the purpose of the Centrifugal Droop Stop Assembly?
Provide additional limit to the drooping of the aft rotor blades during low rotor rpm and shutdown
What component of the Centrifugal Droop Assembly pulls the balancing arm outward as the NR increases from GROUND to FLIGHT?
The weight
What component limits how far the balancing arm on the Centrifugal Droop Assembly moves outward as the NR increases from GROUND to FLIGHT?
Limiting stop
What component on the Centrifugal Droop Assembly is used to pull the balancing arm and interposer block back into place as the NR decreases from FLIGHT to GROUND?
spring
What does a rotor blade drooping significantly lower than the other blades possibly indicate?
Missing droop stop
Which component controls the rate and limits the amount of lead and lag for the rotor blade assemblies?
Blade Shock Absorber
Name the four major components that make up the swashplate assembly.
- Rotating Ring
- Spherical Ball
- Bearing
- Stationary Ring
What drives the rotating ring of the swashplate?
Drive Collar and Drive Arm
At what level does the oil have to be at to depict that the oil tank is full?
Half way full
Which component is mounted inside the Pitch Shaft, passes through the Horizontal Hinge Pin, and connects to the outboard end of the Pitch Varying Housing?
Tie bar
Where must the fluid level be at to be an acceptable proper fluid level for a rotor blade shock absorber?
Half way full
What condition may occur if ground control limitations are exceeded?
Droop stop pounding
A rotor head that allows the blades to lead, lag, feather, and flap is what type of rotor head?
Fully articulating
What component of the rotor head allows the blades to lead and lag?
Vertical hinge pin
What components are designed into the rotor blade and provide a ground for the blade to the aircraft?
- Lighting cables
- Straps
What flight condition must be avoided if lightning cables and straps are damaged or missing from the rotor blade?
Flight near thunderstorms
What is the purpose of the Kevlar filament windings on the rotor blade?
Attach shock absorber to blade
A fully articulated head means that each blade can _______, _________, _______ and ___________.
Lead, lag, feather, and flap
What oil level visual indication determines that the oil tank is full?
Half full
When inspecting the Damper Shock Absorber mounts on the rotor blade, ensure that the Kevlar windings do not have minute cracks running _________ to the direction of the windings.
perpendicular
What components ground the rotor blade to the rotor head?
- Lightning Cables
- Grounding Straps
What administrative action is required if the rotor system accelerates above 111.5 % NR?
maintenance
What components provide rotor speed indications (NR) to CAAS?
Permanent Magnetic Generator
What is the maximum transient (power on) rotor RPM (NR) with the engines driving the rotors?
108
An entry in DA Form 2408-13-1 must be made if the rotor system exceeds what percentage?
111.5
Describe the rotor system limitations from the chart in (NR) IAW TM 1-1520-271-10-2, Chapter 5.
- min transient %: 91
- transient %: 91-97
- normal %: 97-101
- transient %: 101-106
- max transient power on %: 106
- %: 108
- %: 111
What is the normal rotor RPM (NR) operating range?
97-101
