TRANSMISSIONS

Question 1

A _______ is a mechanism for transferring power.
_____ is achieved through the use of gears, belts and pulleys, chains and sprockets, jackscrews, levers, and push-pull rods.

Answer 1

transmission

Question 2

Minor scratches and abrasions on a gear’s bearing surfaces can normally be dressed out with a fine abrasive cloth, however, deep scratches or scoring is _____.

Answer 2

unacceptable

Question 3

Ideally, this contact pattern will be located in the _____ of the gear teeth

Answer 3

middle

Question 4

The purpose of a ____ is the transmission of power through motion. The contact and movement within a _____ system result in stress and wear.

Answer 4

gear

Question 5

Minor scratches and abrasions on a gear’s bearing surfaces can normally be dressed out with a ______ , however, deep scratches or scoring is unacceptable.

Answer 5

fine abrasive cloth

Question 6

The_______ is determined by how the teeth of one gear mate with the teeth of another gear. If the teeth of one gear are set too tightly into the teeth of another, there will be no lash and the gears will not be properly lubricated because a film of oil must be present between the teeth of the gears as they mesh

Answer 6

lash and pattern of a gear

Question 7

The ideal placement of the teeth is in the ______

Answer 7

middle area

Question 8

Many piston engine aircraft powerplants use a ______ arrangement to drive the alternator or vacuum pump.

Answer 8

belt and pulley

Question 9

A drive belt must operate at a designed tension. The tension can often be tested by pushing on the belt in an unsupported location and observing its deflection. An adjustment is typically made by moving the ______ and its pulley location via an adjusting bolt on the mounting bracket.

Answer 9

alternator

Question 10

A______ transmission of power is common on aircraft. It is often used as the drive for lowering and raising flaps and on stabilizer and rudder trim mechanisms

Answer 10

jack screw

Question 11

______ are used as linkage in various types of mechanically operated systems. This type of linkage eliminates the problem of varying tension and permits the transfer of either compression or tension stress through a single tube.

Answer 11

Push-pull tubes

Question 12

As a rule, ____ will be used to transmit thrust from one medium to another.

Answer 12

levers