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Rotary Wing > Week 1 & 2 > Flashcards

Week 1 & 2 Flashcards

(74 cards)

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1
Q

_____________ __________ is the tendency for the whole helicopter to drift in the direction of the tail rotor thrust

A

Translational Tendency

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2
Q
A
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3
Q

What is the full rotating of the blades called on a helicopter?

A

Disk

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4
Q

What causes ground resonance?

A

Blade lead/lag (Out of Phase)

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5
Q

When the engine fails, and the blades begin to autorotate, what must the pilot do?

A

Drop the collective stick

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6
Q

The mast is sometimes ________ to combat the translating tendency

A

Tilted

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7
Q

What does the swashplate do?

A

Transfers the movement of the cyclic and collective from stationary push-pull to rotating push-pull movements

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8
Q

How can the pilot immediately correct ground resonance?

A

Pull on the collective lever

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9
Q

Ground Effect occurs when the helicopter is within _____ _________ __________ from the ground

A

1/2 Rotor Diameter

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10
Q

What connects to the Lower Swash Plate/Inner Ring?

A

Flight Controls

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11
Q

What are the two flight controls that control the flight of a helicopter through the MAIN ROTOR

A

Cyclic and Collective

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12
Q

To give the helicopter fuselage Directional Control,a __________ _______ _________ is vertically mounted on the tail. In order to keep the fuselage straight when increasing power, thepitchof the tail rotor is increased, using thefoot pedals

A

Variable Pitch Rotor

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13
Q

Locate the servos, push/pull tubes, bell cranks

A
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14
Q

What is Item 21.?

A

Outer Ring/Upper Swash Plate

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15
Q

The Final Link to the blades from the Flight Controls are called?

A

Pitch Links

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16
Q

If the Main rotor on a Helicopter spins CLOCKWISE, which direction does the tail rotor BLOW air?

A

To the RIGHT of the helicopter

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17
Q

What is the rotary wing equivalent to Rudder Pedals

A

Tail Rotor Pedals/Anti-torque pedals

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18
Q

The lift vector is at…?

A

Right angles to the rotor disk

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19
Q

What can a technician/AME do to reduce ground resonance?

A

Service shock struts

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20
Q

On the Cyclic, the Red Trigger is for _______________

A

Communication (PTT)

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21
Q

What are the two different switches on the collective stick?

A

Landing Lights and Starter Switch

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22
Q

The compressor turbines turn the _______ _____ set of turbines

A

Power Shaft

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23
Q

What is the problem with a Low Nr during autorotation?

A

Helicopter can’t slow rate of descent/ will crash

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24
Q

On a North American Helicopter, the pilot uses _______ pedal to fight torque

A

Left

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25
\_\_\_\_\_\_\_\_\_ _________ slows the up and down movement of the collective
Friction Control
26
Can you hover at higher altitudes in IGE or OGE?
IGE
27
Main Rotor Pitch links are attached to the?
Rotating Swash Plate
28
Which of Newton's laws is torque and torque reaction?
Newton's Third Law
29
What does the rotor system do when the engine power train fails?
Disengages from the engine to allow free spinning in the direction of rotation
30
What do helicopters tend to do when hovering without any inputs from the pilot?
Drift sideways, Fly forwards
31
What does the torque tube to?
Connects two components// eg// collective control for pilot and copilot
32
What does "OGE" Stand for?
Out of ground effect
33
Another way to combat translational tendency is to....
***Offset the Vertical Fin***, keeping the fuselage straight in forward flight. This unloads the tail rotor
34
A ________ \_\_\_\_\_ is often placed on top of the collective, containing engine trim switches, landing lights, searchlights, and the starter button.
Switch box
35
Cyclic makes the Swash Plates \_\_\_\_\_\_
Tilt
36
Which type of Main Rotor Head is most susceptible to **ground resonance**?
Fully Articulated
37
What is the problem with having a **high** Nr during autorotation?
Overspeed and structural damage
38
The Collective is responsible for two things...?
Altitude and Forward Airspeed
39
Which rotor configuration is this?
Side By Side
40
What components of the helicopter help prevent ground resonance?
Shock Absorbers
41
During autorotation, the direction of the airflow through the main rotor is \_\_\_\_\_\_\_\_\_\_
Upwards
42
Bell cranks are used for...
Changing Direction of force + Mechanical Advantage
43
Which rotor configuration is this?
Tandem
44
Collective Sticks also often have a _______ - ______ throttle
Twist - Grip
45
During normal operation, the direction of the flow of air is \_\_\_\_\_\_\_\_\_\_
Downward
46
If the **green nav light** is on the **left** side, where is the aircraft moving, relative to your position?
Towards you
47
As the Main Rotor rotates, the helicopter wants to spin in the opposite direction, this is called...?
Torque Reaction
48
\_\_\_\_\_\_\_\_\_\_ _____________ - a force occurs 90 degrees from the force applied in the direction of rotation
Gyroscopic Precession
49
What is in between the two swash plates, allowing the top plate to turn?
Swash Plate Bearing
50
What does "IGE" stand for?
In Ground Effect
51
What does the CYCLIC give you?
Pitch/Roll
52
What type of tail-rotor is this?
NOTAR
53
When does Translational Lift occur?
At the transition period between hover and horizontal flight
54
55
True or False: Main rotor RPM Remains Constant?
True
56
\_\_\_\_\_\_\_\_\_ _________ connect the Pilot and Co-Pilot Flight Controls
Torque Tubes
57
When you pull collective, each blade generates more \_\_\_\_\_\_
lift
58
On a **free turbine** helicopter, what is the twist-grip used to control?
Compressor RPM
59
What is Item 20?
Lower Swash Plate/Inner Ring
60
What connects to the Upper Swash Plate/Outer Ring?
Pitch Links
61
The top swash plate is connected to the blades through ______ \_\_\_\_\_
Pitch Links
62
\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ occurs when the engine fails, allows the blades to spin freely to allow a safe landing
Autorotation
63
When you PULL the COLLECTIVE, the engine would need to input
More Power
64
What type of tail-rotor configuration is this?
Fenestron
65
Cyclic attachments have to be ___ \_\_\_\_\_\_\_\_\_ apart
90 Degrees
66
Three Main Flight Controls of a fixed wing aircraft
Ailerons, Elevators, Rudders
67
Which rotor configuration is this?
Coaxial
68
\_\_\_\_\_ ________ are designed to change the direction of a push/pull tube
Bell Cranks
69
During Autorotation, the ______ must be maintained at a safe level
RPM
70
If you can see the **white nav light** of an aircraft, where is it moving,relative to your position?
Away from you
71
How does the Mast and the Rotating Swash Plate rotate in sync?
Through the use of Scissor Links
72
When the collective is pulled hard, and not enough counter-torque pedal can be applied, ______ \_\_\_ _______ \_\_\_\_\_\_\_\_\_\_ _________________ occurs
Loss of Tail Rotor Effectiveness
73
What is Item 11?
Drive Link
74
Which factors affect the RPM of the blades during autorotation
Air Density(Altitude), Temperature, weight

Rotary Wing (4 decks)

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