Lifting System Flashcards
How many vertical struts support the main transmission?
4
What are the 2 sections of the main xmission housing?
upper and lower housing
What drives the oil cooler fans the hydraulic pumps?
accessory drives on the LH and RH forward sides of main xmission.
What type of lubrication system does the main xmission have?
independent, redundant wet sump
What does the Mast Moment indicator measure?
bending moments on the mast
What are the components of the main rotor rpm monitoring system?
magnetic pick up on tail rotor output gear
What component of the engine drive shafts corrects any variations in length or misalignment between the engine outputs and the main xmission inputs?
bendix coupling
What are the limits associated with the rotor brake?
both engines shut down
rotor rpm < 50%
temp > -30’ C
Tail rotor drive assembly consists of ___ drive shafts.
3
The intermediate gearbox changes the angle of power flow ___’.
50
How are metal particles detected in the intermediate and tail rotor xmissions?
magnetic oil drain plug at bottom of gear box
What are main rotor blades made of?
glass-fibre reinforced plastic (GFRP)
What is the main rotor star made of?
titanium
What component assembly drives the rotating (bearing) ring of the swashplate?
scissor assembly (drag link)
What type of tail rotor does UH-72 have?
semi-rigid, 2-bladed
