helicopter components Flashcards

1
Q

HELICOPTER MAJOR COMPONENTS

A

AIRFRAME
FUSELAGE
LANDING GEAR
POWERPLANT
TRANSMISSION MAIN
ROTOR SYSTEM
ANTITORQUE SYSTEM

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2
Q

Fundamental structure, of a helicopter can be made of either METAL or WOOD, COMPOSITE MATERIALS, or some combination of the two

A

AIRFRAME

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3
Q

LANDING GEAR
of helicopters

A

Skids and wheels

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4
Q

simple and lighter weight, so it is the best choice for small helicopters as weight is always a consideration.

A

SKIDS

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5
Q

helicopter can ground taxi (as opposed to hover taxi) around other aircraft and people without worrying about producing a high downwash.

A

WHEELS

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6
Q

The two most common types of engine used in helicopters are the

A

RECIPROCATING ENGINE
TURBINE ENGINE.

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7
Q

, also called piston engines, are generally used in smaller helicopters.

A

Reciprocating engines

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8
Q

Are more powerful and are used in a wide variety of helicopters

A

TURBINE ENGINE

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9
Q

transfers power from the engine to the main rotor, tail rotor, and other accessories during normal flight conditions

A

transmission system

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10
Q
  • reduces engine output rpm to optimum rotor rpm. This reduction is different for the various helicopters.
A

MAIN ROTOR TRANSMISSION

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11
Q
  • also called Tail Rotor Drive Line or Tail Drive Line, runs from the rear cover of the main gearbox to the disconnect coupling at the intermediate gearbox.
A

TAIL ROTOR DRIVE SYSTEM

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12
Q
  • allows the engine to be started and then gradually pick up the load of the rotor.
A

CLUTCH

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13
Q
  • Since lift in a helicopter is provided by rotating airfoils, these airfoils must be free to rotate if the engine fails.
A

FREEWHEELING UNIT

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14
Q

The rotor consists of a

A

mast, hub, and rotor blades.

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15
Q
  • is a cylindrical metal shaft that extends upwards from and is driven, and sometimes supported, by the transmission
A

MAST

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16
Q

At the top of the mast is the attachment point for the rotor blades

A

HUB -

17
Q
  • are attached to the hub by any number of different methods
A

ROTOR BLADES

18
Q

three basic classifications of main rotor system:

A

rigid, semirigid, or fully articulated.

19
Q
  • In this system, the rotor blades are rigidly attached to the main rotor hub and are not free to slide back and forth (drag) or move up and down (flap).
A

RIGID ROTOR SYSTEM

20
Q
  • makes use of a teetering hinge at the blade attach point
A

SEMIRIGID ROTOR SYSTEM

21
Q
  • provide hinges that allow the rotors to move fore and aft, as well as up and down
A

FULLY ARTICULATED ROTOR SYSTEM

22
Q

Helicopters with a single, main rotor system require a separate

A

antitorque system.

23
Q

for every action (force) in nature there is an equal and opposite reaction

A

NEWTON’S THIRD LAW

24
Q

types of tail rotors

A

bladed tail rotor
fenestrone
notar

25
Q

the most common type of antitorque system that you will see on a helicopter

A

BLADED TAIL ROTOR

26
Q

This system uses a series of rotating blades shrouded within a vertical tail.

A

FENESTRONE

27
Q

stands for No Tail Rotor

A

NOTAR

28
Q

Is an alternative to the antitorque rotor

A

notar

29
Q

KINDS OF HELICOPTER

A

SINGLE ROTOR HELICOPTER
TANDEM ROTOR HELICOPTER
COAXIAL HELICOPTER
COMPOUND HELICOPTER
TILT ROTOR HELICOPTER
INTERMESHING ROTOR HELICOPTER