AW 139 Rotor Flashcards
What is the continuous Nr overspeed limit in the power-off condition?
Above 110%
What sensors can be found on the Tail Rotor Gearbox?
Temperature sensor
Chip detector
oil low Level sensor
The tail rotor blade is mainly manufactured with:
Glass fiber
The tail rotor damper:
is serviced on-condition
Main rotor blades tie-down are secured to:
MLG only
When main rotor blades tie-downs are required, one blade must be positioned:
Perpendicular to the longitudinal axis
When parking the helicopter:
Park brake must be ON, rotor brake must be ON
Main rotor blades are mainly manufactured with:
c. Glass fiber and Kevlar fiber
Dynamic balancing weights are located:
In the main blade installation bolts
The main rotor hub is made of:
Titanium with a graphite fiber reinforcement
The main rotor damper can operate at low speed thanks to the oil displacement between each chamber due to:
Internal leaks and orifices
The oil quantity in the main rotor damper is checked:
By sight only
The main rotor swashplate spherical bearing rotation is prevented by:
The main rotor servoactuators
The tail rotor drive shaft are made of:
1-Steel / 2-Aluminium / 3-Aluminium
The bearings supporting the tail rotor drive shafts are total of:
One
The tail rotor hub is manufactured from.
Titanium
The spider and the slider assembly in the tail rotor rotating controls:
Rotates and slides inside the slider bushing
The tail rotor dynamic balancing weights are located:
In the tail blade installation bolt
The tail stabilizer is:
Fixed to the structure
The rotor speed probe is formed by three independent coils:
The first for EEC #2, the second for the MAU’s, the third for EEC #1
The main rotor speed indication is represented:
On the triple tachometer displayed on the PFD (default page) and on the MFD (main page)
The caution NR MISCOMPARE is displayed on the CAS when:
A discrepancy of 3% between the EECs data and the corresponding back up analog data exist
The caution ENG ANALOG FAILURE is displayed on the CAS when
A discrepancy of 3% between the EECs data and the corresponding back up analog data exist the
When the ROTOR BRAKE lever is set to PUMPING LIMIT from OFF position, the pressure reported on the RB pressure indicator:
a. Is 46 BAR
When the A/C is landed
b. The caliper moves automatically up when the logic WOW and both engine off is detected
With the ROTOR BRAKE lever set to OFF position after an operation, the caliper is:
Still up and moves down when the first engine is started
The ROTOR BRAKE pressure indicator has a green led
That is lit when the caliper is down
The warning message is continuously repeated until the condition is corrected or the reset input provided is:
ROTOR LOW
The Nr operative range in power off condition is:
95 - 110%
The Nr overspeed in power off condition is above:
110%
On the triple tachometer scale, the red band will be filled in based
On the value of the NR/NF indications
Which Aural Warning Message is continuously repeated until the condition is corrected?
ROTOR LOW
