Instrument 1 Flashcards
What are the Magnetic Errors? If you are turning to a South Heading, what heading do you roll out at? what about North?
Deviation
Variation
Magnetic Dip
Oscillation
Northerly Turning Error <- important (NUSO)
Acceleration Error
What is standard Pressure & Temp
29.92”
15 Degrees Celsius
What is the difference between anti-icing & de-icing equipment? Do we have any of this equipment?
Anti prevents ice
De gets rid of ice
Yes, we have the very basic (Pitot Heat)
What are the required Equipment for IFR flight?
ATOMATOFLAMES+FLAPS (at night)
G - Generators or Alternators
R - Radios
A - Altimeter
B - Ball (or Turn coordinator)
C - Clock
A - Attitude Indicator
R - Rate of Turn
D - Directional Gyro
What instruments are apart of the 6 Pack? What system are they apart of?
ALL PITOT-STATIC
Altimeter
Airspeed
VSI
-
Attitude (Vacuum, Gyro)
Heading (Vacuum, Gyro)
Turn Coordinator (Electric)
Describe the Altimeter
Gives you your Altitude, - true altitude adjusted for nonstandard pressure - (Static Pressure vs Altimeter Setting)
How is the Altimeter Constructed?
One side of the wafers is fixed, and the “non-fixed” side is attached via mechanical linkage to the dial, as static pressure changes the wafers contract and expand, moving the dial.
- Wafers are sealed at 29.92”
What are the errors associated with an Altimeter?
When flying from an area from high pressure to low, the altimeter will show higher from the ground than you actually are. (High to Low look out Below)
What are the different Types of Altitude?
True - Altitude above MSL
Indicated - Read straight from the altimeter
Absolute - Altitude Above the ground
Pressure - Altitude corrected from nonstandard pressure
Density - Altitude corrected for nonstandard pressure & Temp
What are the types of Airspeed?
True - The speed the aircraft is actually traveling through the air
Indicated - Read Directly from the Airspeed Indicator
Calibrated - Ind. Airspeed adjusted for installation or configuration errors.
Ground Speed - The speed at which you are traveling relative to the ground
Describe the VSI
Vertical Speed Indicator, both a rate & a trend instrument
Uses pressure differential to determine your climb rate
Static pressure is “injected” straight into the wafers & the case via a calibrated leak, as the aircraft climbs or descends, the pressure changing causes the wafers to expand & contract (slightly delayed)
Describe the Airspeed Indicator
Measures difference between Pitot & Static Pressure
Consists of a thin, corrugated, phosphor-bronze aneroid that receives pitot pressure.
Case is sealed with Static-Pressure
As pitot pressure increases, aneroid expands and pushes on the dials moving the needle
What is the difference between Pitot & Static Pressure?
Pitot Pressure is the measure of ram air pressure
Static Pressure changes as Altitude changes
What are the Pitot-Static Errors?
Unusual Attitudes can change the airflow over the static ports & pitot-tube
Blocked Pitot-Tube causes ASI to read 0
Blocked Pitot-Tube & drain hole causes ASI to act as altimeter
Blocked Static Port causes errors in ASI, VSI, ALT, and an alternate static port must be used, may include breaking VSI glass.
Describe the Attitude Indicator
Indicates attitude of airplane relative to the true horizon.
Typically powered by a gyro, usually vacuum driven, spins on a horizontal plane upon a vertical axis.
G5’s are Inertia Based
Double gimbal mounted so it gives both pitch and bank information
The Artificial horizon stays in place while the aircraft rotates around it.
Pendulous vanes are four “exhaust” ports equally space that keeps the gyro stabilized be limiting the air that can pass through each.