H1-1 Intro (1.0-2.8)

Question 1

1-5 What is the helicopters primary flight controls?

Answer 1

Cyclic, Collective, Antitorque pedals, Throttle

Question 2

1-5 What are the main parts of the tail of a helicopter? (5)

Answer 2

Tail rotor
Tail rotor drive shaft,
tail rotor shaft,
pitch change link,
cross head

Question 3

1-4 Name some types of helicopter systems. (4)

Answer 3

Single rotor,
Tandem rotor,
Coaxial rotors,
Intermeshing rotors,

Question 4

1-6 What do horizontal stabilizers do? (1-12)

Answer 4

help level the helicopter to minimized drag during flight

Question 5

2-2. What is dynamic pressure?

Answer 5

A pressure in the direction of the air movement

Question 6

2-2. Every object in the atmosphere is surrounded by a gas that exerts a static force of

Answer 6

2116 pounds per square foot. A fourth times a unit area, called pressure

Question 7

2-2 Due to the design of the airfoil the velocity of the air pressure passing over the upper surface will be greater than that of the lower surface leading to a higher or lower dynamic pressure on the upper surface than the lower surface

Answer 7

Higher

Question 8

2-2 Higher dynamic pressure on the upper surface of an airfoil lowers or raises the static pressure on the upper

Answer 8

Lowers

Question 9

2-2 What happens to static pressure when dynamic pressure raises

Answer 9

It lowers

Question 10

2-2 What is the difference between static pressure and dynamic pressure?

Answer 10

Dynamic pressure is when air is moving

Question 11

2-1 What is aerodynamic force?

Answer 11

The force created by air moving over object or moving an object through the air

Question 12

2-2 What does dynamic mean?

Answer 12

Moving or motion

Question 13

2-4 What is Bernoulli’s formula?

Answer 13

P total = P dynamic + P static
also know as Pitot pressure

Question 14

2-4 What is the Venturi effect?

Answer 14

Static pressure on the sides of the Venturi will decrease. Total pressure must remain the same while pressure in the venturi raises.

Question 15

2-6 What percentage of weight must be added for 30° of Bank in a helicopter?

Answer 15

16%

Question 16

2-6 What percentage of weight must be added to the gross weight in a 60° bank in a helicopter?

Answer 16

Double the weight

Question 17

2-6 What multiple of weight must be added to the gross weight and an 80° bank?

Answer 17

Almost 6 times

Question 18

2-6 What is the solidity ratio?

Answer 18

It is the ratio of the total rotor blade area, which is the combined area of all the main rotor blades/ to the total rotor disk area.

Question 19

2-6 What two types of drag compose profile drag?

Answer 19

Form drag and skin friction

Question 20

2-6 What is Form drag and what is it a part of?

Answer 20

Form drag results from the turbulent wake caused by the separation of airflow from the surface of the air foil. Wing tip vertices

Question 21

2-7 name all the components of total drag (3+2)

Answer 21

Profile drag (Form drag and skin friction) induced drag, parasite drag

Question 22

2-6 What is skin friction and what is it a part of?

Answer 22

Skin friction is caused by surface roughness and is the second part of profile drag

Question 23

2-7 Induced drag is the major cause of drag at the lower or higher airspeed

Answer 23

Lower

Question 24

2-7 what will happen to parasite drag if you double your airspeed

Answer 24

It will 4x

Question 25

2-7 What is total drag?

Answer 25

The sum of all three drag forces. Profile, induced, and parasite

Question 26

2-7 Define blade span

Answer 26

length of the rotor blade from center of rotation to tip of the blade.

Question 27

2-8 What is the MEAN camber line?

Answer 27

Line that runs through the middle of the airfoil. Halfway between upper and lower surfaces

Question 28

2-8 What is flightpath velocity?

Answer 28

The speed and direction of the airfoil passing through the air

Question 29

2-8 On airplanes, the flight path velocity is equal to

Answer 29

True airspeed or TAS

Question 30

2-8 For helicopter rotor blades, flight path velocity is equal to (its an airfoil formula)

Answer 30

Rotational velocity plus or minus a component of directional air speed

Question 31

H.2-8 Induced flow is the downward flow of air through the

Answer 31

rotor disk.

Question 32

2-8 Resultant Relative Wind

Answer 32

Relative wind modified by induced flow.

Question 33

2-8 angle of incidence

Answer 33

The angle between the cord line of the blade and the rotor hub or

Question 34

2-8 center of pressure or CP

Answer 34

The point along the cord line of the airfoil through which all aerodynamic forces are considered to act. Varies as the AOA changes.

Question 35

2-6 How does profile drag develop?

Answer 35

From the frictional resistance of the blades passing through the air

Question 36

LIRL

Answer 36

low intensity Runway lights

Question 37

LLWAS (shear alert)

Answer 37

Low Level wind shear alert system

Question 38

LLWS (shear)

Answer 38

Low level wind shear

Question 39

LNAV

Answer 39

Lateral Navigation

Question 41

LOP ( position)

Answer 41

Line of Position

Question 42

LP (approaches)

Answer 42

Localizer Performance Approaches

Question 43

LPV (with vertical guidance)

Answer 43

Localizer Performance with Vertical guidance

Question 45

MAA (900G) blue gps vectors

Answer 45

Max Authorized altitude on blue GPS Victor

Question 46

MALSF

Answer 46

medium intensity approach lighting system with sequenced flashing lights

Question 47

MALSR (w/rail)

Answer 47

medium intensity approach lighting system with Runway alignment indicator lights

Question 48

MAP (manifold)

Answer 48

Manifold absolute pressure

Question 49

MB (bearing)

Answer 49

Magnetic Bearing

Question 50

MC (course)

Answer 50

Magnetic course