High speed proctection
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Questions and Answers

What happens to the pitch trim when High Speed Protection is activated?

  • It is permanently locked in a nose-up position.
  • It becomes fully adjustable.
  • It can only be adjusted manually.
  • It is frozen. (correct)

At what flight conditions does High Speed Protection activate?

  • At or above VMO/MMO. (correct)
  • When the bank angle exceeds 33°.
  • At or below VMO/MMO.
  • Only during low acceleration.

What is the maximum reduced bank angle limit under High Speed Protection?

  • 33°
  • 0°
  • 67°
  • 45° (correct)

How does the aircraft respond when the sidestick is released during High Speed Protection when in bank ?

<p>It returns to a 0° bank angle. (C)</p> Signup and view all the answers

What effect does increasing speed above VMO/MMO have on sidestick authority?

<p>Sidestick nose-down authority is progressively reduced. (A)</p> Signup and view all the answers

What bank angle is set for positive spiral static stability under normal law?

<p>33 ° (D)</p> Signup and view all the answers

Under what condition does the aircraft return to a bank angle of 0 ° when released .?

<p>When in high speed protection (C)</p> Signup and view all the answers

What occurs if there is no sidestick input during a dive situation?

<p>The aircraft slightly overshoots VMO/MMO and returns towards the envelope. (B)</p> Signup and view all the answers

What happens when the sidestick is maintained full forward?

<p>The aircraft significantly overshoots VMO/MMO. (B)</p> Signup and view all the answers

At which speed does the pitch nose-down authority become zero?

<p>At VMO +16/MMO +0.04. (C)</p> Signup and view all the answers

When does High Speed Protection get deactivated?

<p>When the aircraft speed decreases below VMO/MMO (A)</p> Signup and view all the answers

What does the autopilot do at VMO + 12 kt?

<p>Disconnects (B)</p> Signup and view all the answers

What does the PF have the authority to perform during a dive?

<p>Conduct a high speed/steep dive escape maneuver (A)</p> Signup and view all the answers

What happens to the control laws when speed decreases below VMO/MMO?

<p>Normal control laws are recovered (C)</p> Signup and view all the answers

At what indicated air speeds does High Speed Protection become inactive?

<p>Below VMO/MMO (B)</p> Signup and view all the answers

At what indicated airspeed does an OVERSPEED ECAM warning occur?

<p>VMO + 4 kt and MMO + 0.006 (D)</p> Signup and view all the answers

Which statement is true regarding the OVERSPEED ECAM warning?

<p>It activates at VMO + 4 kt and MMO + 0.006 (B)</p> Signup and view all the answers

When might the angle of attack protection activate?

<p>At high altitude exceeding MMO (B)</p> Signup and view all the answers

What quantity does MMO exceed when the OVERSPEED ECAM warning activates?

<p>0.006 (A)</p> Signup and view all the answers

Flashcards

High Speed Protection

Automatic system that activates when aircraft speed exceeds VMO/MMO to help recovery from high-speed upset.

VMO/MMO

Speed limit triggering High Speed Protection.

Pitch Trim Frozen

Pitch trim mechanism is locked during High Speed Protection activation.

Spiral Stability (High Speed)

Aircraft naturally returns to level flight at 0° bank angle after stick release.

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Bank Angle Limit

Reduced from 67° to 45° during High Speed Protection.

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Spiral Stability (Normal Law)

The aircraft naturally returns to a level flight at 33° bank angle after the stick is released.

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Spiral Stability (Positive Spiral)

The aircraft naturally returns to a level flight at 0° bank angle after the stick is released.

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Bank Angle Limit (High Speed Protection)

During high-speed protection, the maximum bank angle allowed is reduced to 45°. This helps prevent overbanking and potentially exceeding the aircraft's structural limitations.

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What happens when sidestick is neutral at high speed?

The aircraft will slightly overshoot VMO/MMO and then gradually fly back towards the allowed speed envelope.

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What happens with full forward sidestick at high speed?

The aircraft will significantly overshoot VMO/MMO and continue to accelerate.

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What happens to pitch authority at VMO+16/MMO+0.04?

The aircraft's pitch nose-down authority smoothly reduces to zero. This means the aircraft stops pitching down, but doesn't necessarily stabilize at that speed.

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VMO/MMO Recovery

The aircraft's high-speed protection system helps it recover from exceeding VMO/MMO, but the aircraft might not automatically stabilize.

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What happens when aircraft speed drops below VMO/MMO?

High Speed Protection deactivates, and the usual normal control laws are restored, allowing for normal aircraft handling.

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What speed does the autopilot disconnect?

The autopilot disconnects at a speed 12 knots faster than VMO or 0.03 above MMO, ensuring manual control in critical situations.

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What is the PF's role in high-speed recovery?

The PF has full authority to initiate a high-speed dive escape maneuver via the sidestick, utilizing a reflex action.

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How is high-speed stability maintained?

During High Speed Protection, the aircraft naturally returns to level flight at 0° bank angle after stick release, promoting stability within the speed limits.

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What happens to the bank angle limit during High Speed Protection?

The maximum bank angle is reduced from 67° to 45°, preventing excessive turning and potential structural damage at high speeds.

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What happens when VMO+4kt / MMO+0.006 is reached?

An OVERSPEED ECAM warning activates, indicating the aircraft is exceeding its maximum operating speed limits. This activates the angle of attack protection system at high altitudes.

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What triggers angle of attack protection?

The angle of attack protection system is activated when the aircraft reaches VMO+4kt or MMO+0.006 at high altitudes. This system helps to prevent stall and loss of control at high speeds.

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What is the role of angle of attack protection?

Angle of attack protection is designed to help prevent stall and loss of control at high speeds. It limits the aircraft's ability to pitch up and helps maintain the aircraft's stability.

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Why is angle of attack protection important?

Angle of attack protection is crucial for maintaining control of the aircraft when exceeding VMO/MMO limits. It helps to prevent stall and loss of control, which are potentially dangerous situations.

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What happens to the aircraft when angle of attack protection is active?

When angle of attack protection is active, the aircraft's pitch nose-down authority smoothly reduces to zero. This prevents the aircraft from pitching up and potentially stalling at high speeds, ensuring control.

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Study Notes

Aircraft Recovery from High-Speed Upsets

  • Aircraft automatically recovers from high-speed upsets.
  • High Speed Protection (HSP) activates at or above VMO/MMO, depending on flight conditions (high acceleration, low pitch attitude).
  • Pitch trim is frozen when HSP is activated.
  • Positive spiral static stability is introduced at 0° bank angle, instead of 33° in normal flight.
  • With the sidestick released, the aircraft returns to 0° bank angle.
  • Bank angle limit is reduced from 67° to 45°.
  • As speed exceeds VMO/MMO, sidestick nose-down authority progressively decreases.
  • A permanent nose-up order aids recovery to normal flight conditions.

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Description

Test your knowledge on aircraft recovery from high-speed upsets and the associated mechanisms like High Speed Protection (HSP). This quiz covers the key principles of stability and control during critical flight conditions. Enhance your understanding of bank angles and pitch trim in aircraft dynamics.

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