helicopter components

Question 1

HELICOPTER MAJOR COMPONENTS

Answer 1

AIRFRAME
FUSELAGE
LANDING GEAR
POWERPLANT
TRANSMISSION MAIN
ROTOR SYSTEM
ANTITORQUE SYSTEM

Question 2

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

Answer 2

AIRFRAME

Question 3

LANDING GEAR
of helicopters

Answer 3

Skids and wheels

Question 4

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

Answer 4

SKIDS

Question 5

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

Answer 5

WHEELS

Question 6

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

Answer 6

RECIPROCATING ENGINE
TURBINE ENGINE.

Question 7

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

Answer 7

Reciprocating engines

Question 8

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

Answer 8

TURBINE ENGINE

Question 9

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

Answer 9

transmission system

Question 10

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

Answer 10

MAIN ROTOR TRANSMISSION

Question 11

• 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.

Answer 11

TAIL ROTOR DRIVE SYSTEM

Question 12

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

Answer 12

CLUTCH

Question 13

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

Answer 13

FREEWHEELING UNIT

Question 14

The rotor consists of a

Answer 14

mast, hub, and rotor blades.

Question 15

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

Answer 15

MAST

Question 16

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

Answer 16

HUB -

Question 17

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

Answer 17

ROTOR BLADES

Question 18

three basic classifications of main rotor system:

Answer 18

rigid, semirigid, or fully articulated.

Question 19

• 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).

Answer 19

RIGID ROTOR SYSTEM

Question 20

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

Answer 20

SEMIRIGID ROTOR SYSTEM

Question 21

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

Answer 21

FULLY ARTICULATED ROTOR SYSTEM

Question 22

Helicopters with a single, main rotor system require a separate

Answer 22

antitorque system.

Question 23

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

Answer 23

NEWTON’S THIRD LAW

Question 24

types of tail rotors

Answer 24

bladed tail rotor
fenestrone
notar

Question 25

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

Answer 25

BLADED TAIL ROTOR

Question 26

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

Answer 26

FENESTRONE

Question 27

stands for No Tail Rotor

Answer 27

NOTAR

Question 28

Is an alternative to the antitorque rotor

Answer 28

notar

Question 29

KINDS OF HELICOPTER

Answer 29

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