Day 5 Progress Check Flashcards
(20 cards)
In a gas turbine engine, what types of bearing are typically used to manage radial loads and prevent axial movement?
Deep-groove ball bearing and Straight roller bearing
In certain engines, what are master rod or crankpin bearings made of?
Steel shells coated with silver
What does a propeller shaft connect in an airplane?
The engine to the propeller
Which type of reduction gearing employs beveled external teeth on the drive gear?
Bevel planetary gearing
What type of propeller shafts do high-output radial engines typically have?
Splined shafts
What are smaller bearings that support various shafts in the accessory section referred to as?
Bushings
What material are plain bearings NOT typically crafted from?
Steel
What is the primary function of a bearing in a mechanical system?
To allow free movement with minimal friction and wear
Why are roller bearings suitable for gas turbine engines?
They can handle both radial and thrust loads
What is a unique feature about flanged propeller shafts used for in modern engines?
They have holes to mount the propeller
Which types of loads can bearings be designed to handle?
Both radial and thrust loads
What components are part of a ball bearing configuration?
grooved Inner and outer races, ball sets, and a bearing retainer
When is it preferable to use a straight roller bearing?
When the bearing encounters solely radial loads
What is the primary purpose of propeller reduction gearing in aircraft engines?
To control propeller rotation speed
What are porous Oilite bushings saturated with?
Oil
What loads can a tapered roller bearing handle?
Both radial and thrust
What types of propeller shafts are typically associated with older and smaller engines?
Tapered shafts
What is the function of a thrust bearing around the propeller shaft?
To absorb propeller thrust and transmit it to the nose housing section
What is the typical material used for the propeller shaft?
Steel-alloy forging
What are the three different types of bearings in general use?
Plain, roller, and ball
