Power Train Flashcards
What does the Power Train System consist of?
The Power Train System consists of a main transmission with oil cooler, intermediate gear box, tail gear box, and drive shafts.
Name the five Transmission Modules.
A main module, two input modules, and two accessory modules. (5 pack)
The input module reduces engine input rpm from ______ rpm to ____ rpm and also allows the drive angle to be changed from the engine to the main module.
20,900, 5750
What allows engine disengagement during autorotation?
The freewheel unit allows engine disengagement during autorotation.
In case of a non-operating engine, what is driven by the main rotor?
In case of a non-operating engine, the accessory module will continue to be driven by the main rotor.
What is the spline adapter is used for?
The spline adapter is used for mounting the main generator to the accessory modules and serves as a protective barrier if in the event the generator should seize and fail.
What does the Main Transmission Lubricating System consists of?
The Main Transmission Lubrication System consists of the Oil Pumps, Pressure Regulating Valve, and Oil Filter.
The drive shafts are broken down into four sections and transmit torque from the main module to the tail rotor, and are joined together by what?
Multiple disc flexible couplings
The Sections I, II, III drive shafts spin at approximately _____ rpm while the Section IV drive shaft spins at approximately _____ rpm.
4116, 3319
The Section II drive shaft connects to the rear of the oil cooler and to the Section III drive shaft. Each of the three drive shafts are interchangeable. T/F?
True
The intermediate gear box changes the drive angle about __º and reduces input speed of _____ rpm to _____ rpm tail drive output speed.
58, 4110, 3319.
The oil cooler thermostatic control valve is used for what purpose in the Power Train system?
The oil cooler thermostatic control valve allows cold oil to bypass the radiator.
Multiple disc flex couplings are used for what purpose on the UH-60 helicopter?
Multiple disc flex couplings are used to transmit torque and allow for minor misalignment of tail rotor compensation.
What is the most dangerous type of vibration?
High frequency (from high speed components)
