Altitudes Flashcards
How to find pressure altitude while in airplane
Set the altimeter to 29.92. The indicated altitude is the pressure altitude
How to calculate pressure altitude…
(This method is an estimate)
1- subtract current altimeter setting from 29.92
2- multiply the difference times 1000
3- to #2 above, add ( if the product is pos) or sub (if the product is neg) to the field elevation
4- the total from #3 above is the Pressure Altitude for that airport.
What is pressure altitude?
Field elevation corrected for barometric pressure
What is Density Altitude
Pressure altitude corrected for temperature and humidity
What is the relationship between barometric pressure and Density altitude
Inverse relationship.
Pressure Density Altitude
Increases. decreases
Decreases. Increases
What is the relationship of Density Altitude to temp and humidity?
Direct relationship
As temp & humidity increase,
Density Altitude increases etc
The 4 types of hypoxia:
HYPOxic - too little inhaled oxygen
HYPEmic- oxygen deficiency is in your blood (carbon monoxide)
HYSTOtoxic- inability of cells to use oxygen
Stagnetic- reduced stagnation due to extreme cold or excessive G’s
Symptoms of hypoxia
Initial euphoria
Headache
Delayed reaction time
Unconsciousness
The correct response to hypoxia is
To lower the nose to lose altitude
Hyperventilation is…
Breathing too quickly; too much carbon dioxide passing out of the body
Hyperventilating symptoms
Dizzyiness
Nausea
Overcome hyperventilation by
Breathing slowly
Or in a bag
Spatial Disorientation is
Temporary confusion due to loss of visual cues and relying on physical sensations of the body to tell you the airplanes attitude
Pilots should adapt their eyes for night flight by…
Avoiding bright white light 30 min prior to flight
During night flights scan by….
Off center eyesight
Scan slowly, scanning small portions in succession
