Flight Control Laws Flashcards

1
Q

What protections do you have in Normal Law?

A

B - Bank 67, 45, 40, 33 degrees
Y - Yaw - Damping and Turn Coordination
P - Pitch 30 degrees nose up 15 degrees nose down
A - AOA VLS, alpha prot, alpha max, alpha floor
L - Load - Clean -1.0 - 2.5 Dirty 0.0 - 2.0
S - Speed + 6, + 30

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2
Q

How does the high speed protection operate?

A

If VMO/MMO plus a predetermined factor is exceeded, the system induces a pitch-up input to limit aircraft speed

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3
Q

Can the pilot override the auto pitch-up associated with high speed protection in normal law?

A

No

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4
Q

What is Alpha Max?

A

The maximum angle of attack allowed in normal law, indicated by the top of the red strip on the airspeed scale

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5
Q

How does high angle of attack protection operate?

A

When the angle of attack exceeds alpha protection, pitch trim ceases and angle of attack is now proportional to sidestick deflection, not to exceed alpha max even with full aft sidestick deflection

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6
Q

What protections do you have in alternate law?

A

B - Bank - No protection
Y - Yaw - Damping only
P - Pitch - No protection
A - AOA - VLS, VSW
L - Load - Same as normal
S - Speed - Stability modes

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7
Q

Can you override the high stability in alternate law?

A

Yes

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8
Q

What protections do you have in direct law?

A

B - Bank - No protections
Y - Yaw - Mechanical rudder
P - Pitch - No protection
A - AOA - VLS, VSW
L - Load - No protection
S - Speed - Aural over speed

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9
Q

If you are in pitch alternate law, what law would roll be?

A

Direct law

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10
Q

When is there a direct relationship between sidestick and flight control surface deflection?

A

When in normal law, ground mode
When in direct law
When below 50 feet in flare mode (pitch only)

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11
Q

How would you get into abnormal attitude law?

A

By exceeding approximately double the normal law limits

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12
Q

What is the purpose of abnormal attitude law?

A

Allows the aircraft to be recovered from an unusual attitude

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13
Q

Does the aircraft remain in abnormal attitude law once it returns within the normal flight envelope?

A

No. When the aircraft returns within the normal flight envelope, the abnormal attitude law disengages

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14
Q

Will abnormal law revert to direct law on landing gear extension?

A

No

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15
Q

What PFD indications indicate normal law?

A

Green = for pitch, bank, and over speed limits
Amber/black (alpha protection) airspeed tape

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16
Q

What is indicated if the PFD pitch and bank limits are amber X’s?

A

You are not in normal law

17
Q

What would cause you to revert to another law?

A

Multiple failures of redundant systems

18
Q

What law are you in when you perform the flight control check on the ground?

A

Normal law, ground mode

19
Q

Can the aircraft be flown with a loss of all flight control computers?

A

Yes, in mechanical backup

20
Q

How is the airplane controlled in mechanical backup?

A

Pitch - Trim wheel (horizontal stabilizer)
Yaw - Rudder pedals (rudder)
Speed - Thrust levers