What are the errors with the attitude indicator?
What are the errors with the attitude indicator?
Attitude Indicator Limitations/Errors: Can tumble if 100-110° of bank or 60-70° of pitch is exceeded. May be caged preventing tumbling, especially during acrobatics. Accelerations may cause a slight pitch up indication. Decelerations may cause a slight pitch down indication.
What is attitude direction indicator?
The attitude direction indicator (ADI) presents the pitch and bank of the aircraft relative to a depiction of the horizon. In general a so-called inside-out frame of reference is used (fixed airplane symbol against a moving horizon).
Why is the attitude indicator important?
The attitude indicator on an airplane is very important. It informs the pilot of the orientation of the aircraft relative to the horizon, so it must be correct at all times regardless of the plane’s movements.
Why is the attitude indicator called the trap door?
Never use the term attitude indicator when discussing instrument flying. Call it the “trap door,” because if you don’t give it the attention that it requires, you’ll think that the bottom fell out of your airplane.
How do you adjust attitude indicators?
The adjustment knob is used to adjust the wings up or down to align with the horizon bar. This allows adjustment to the height of the pilot. Preferably, the adjustment should be made when level on the ground. When the wings are aligned with the horizon bar, the aircraft is in level flight.
What causes attitude indicator failure?
One of the most common attitude indicator errors occurs when the AI doesn’t erect properly. When this happens, it’s usually due to the gyro failing to spin as fast as it should. A properly functioning AI should erect or stabilize within three minutes of powering up.
What is Adi in aviation?
Whether part of an EFIS display or a mechanical instrument, an Attitude Indicator (AI), Attitude Director Indicator (ADI) or Artificial Horizon (AH) provides flight crew with essential information about aircraft attitude relative to the real horizon when the latter cannot be determined because of poor forward …
What is pendulous vanes?
The pendulous vane system in a vacuum-driven attitude indicator keeps the gyroscope upright. If for some reason the gyro is displaced, the vanes and air jets create a precession force that drives the gyro to erect again, returning it to the vertical.
What does caging a gyro mean?
Caging. Many gyros include a manual caging device, used to erect the rotor to its normal operating position prior to flight or after tumbling, and a flag to indicate that the gyro must be uncaged before use. Turning the caging knob prevents rotation of the gimbals and locks the rotor spin axis in its vertical position.
Which indication would you expect on your attitude indicator during a rapid deceleration?
During rapid acceleration, the attitude indicator will indicate a false climb. During rapid deceleration, the attitude indicator will display a greater pitch-down attitude than reality.