Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
29 Cards in this Set
- Front
- Back
|
What happens if hydraulic fluid is decomposed by heat? |
Toxic gases are released. |
|
|
What can happen with prolonged contact with liquid or mist hydraulic fluid? |
Dermatitis and irritation to skin and eyes. |
|
|
Safety related warning in conjunction with hydraulics and the flight controls.
|
Make sure all personnel near or on the a/c are clear of all moving flight controls prior to applying hydraulic power to preven serious injury.
|
|
|
What is the hydraulic patch test? |
A test method used to measure metallic and non-metallix contaminate levels in A/C and suppor equipment hydraulic systems. |
|
|
What is the problem with particle contamination? |
It can degrade or lead to system failure if not routinely analyzed. |
|
|
How many hydraulic pumps are there? |
Three. |
|
|
Where are the hydraulic pumps located? |
#1/2 pump modules are located on the input modules inside the hydraulics bay. The Backup pump is located on the forard port side of the hydraulics bay. |
|
|
What is the purpose of the #1/2 hydraulic pumps? |
To provide hydraulic fluid for the flight controls. |
|
|
What is the purpose of the back-up pump? |
Back-up incase of primary failure. Charge the APU accumulator. Operate the rescue hoist. |
|
|
Where are the transfer modules located? |
Inboard of each of the transmission-driven pump modules. |
|
|
What is the purpose of the transfer modules? |
Provide transfer of hydraulic pressure sources. |
|
|
Where is the hydraulic servicing fill pump and reservoir located? |
Right side of the upper deck. |
|
|
Where is the tail rotor servo located? |
In the tail gear box. |
|
|
What is the selector valve? |
A valve placed in one of four port positions to direct hydraulic fluid from the hand pump reservoir to the three pump modules or to the rotor brake master cylinder. |
|
|
How much hydraulic fluid does the hydraulic reservoir hold? |
1.3 quarts. |
|
|
What is the purpose of the priority valve? |
To isolate the rescue hoist in the event of a reduction in hydraulic pressure. |
|
|
At what pressures does the priority valve close? |
2,150 psi - 2,250 psi |
|
|
At what pressures does the priority valve open? |
Minimum pressure of 2,500 psi |
|
|
What is the purpose of the Hydraulic reservoirs? |
To store hydraulic fluid. |
|
|
How many hydraulic reservoirs does the A/C have? |
Four. |
|
|
Where are the hydraulic reservoirs located? |
Attached to the #1 Hydraulic pump Attached to the #2 Hydraulic pump Attached to the Back-up Hydraulic pump Servicing reservoir in hydraulic bay. |
|
|
What are the three primary servos? |
Forward, Aft, Lateral. |
|
|
What is the purpose of the primary servos? |
To absorb feedback forces from the main rotor. |
|
|
What is the purpose of the pilot-assist servos? |
To reduce loads at the collective sticks and rudder pedals, and longitudinal loads at the cyclic sticks. |
|
|
How many stages is the tail rotor servo? |
Two. |
|
|
How many stages are pressurized in the tail rotor servo? |
One stage. The back-up pump will pressurize the other in an emergency. |
|
|
What is the purpose of the Rescue hoist? |
To provide a means of rescuing downed personnel. |
|
|
Where is the Rescue hoist located? |
On the starboard side of the A/C above the cargo door. |
|
|
How is the Rescue hoist powered/controlled? |
Electrically powered, Hydraulically controlled. |
