High-Altitude Weather and Aerodynamics Flashcards
In what levels of the atmosphere does high-altitude flight take place?
All of the answers are correct.
In the upper troposphere and the stratosphere, aircraft may generate cloud-like streamers that are called:
Contrails.
The jet stream typically flows west to east, occasionally meandering south or north. It is strongest in:
Winter.
Which of the following weather phenomena is likely to occur near the jet stream?
Clear Air Turbulence.
Which of the following clouds would indicate unstable air and contain moderate to heavy turbulence with the potential for icing?
Towering cumulus.
Structural icing at high altitudes can be of any type; however, which type is the most common?
Rime ice.
What is the benefit of planning gradual descents from high altitudes?
All of the answers are correct.
Cabin rates of descent should not exceed:
500-600 ft/min.
Which of the following charts provide information on pressure systems, temperature, winds, and temperature/dewpoint spread at the 850, 700, 500, 300, and 200 mb. levels?
Constant pressure charts.
Which of these charts provide information on the jet stream, turbulence, temperature, wind, and pressure at the tropopause?
Observed tropopause charts.
In what type of decompression does the cabin pressure change faster than the lungs can decompress?
Explosive.
What is a hazard that slow decompression presents that rapid and explosive decompression do not?
It may go unnoticed.
If decompression occurs during flight, you should descend to a safe altitude and:
Don oxygen masks.
Under which of the following conditions should you not use oxygen:
In-flight fire.
If severe turbulence is penetrated with the autopilot on, which of the following settings should be off:
Altitude hold mode.
Increased altitude and the subsequent decrease in pressure affects respiration by:
Decreasing the driving pressure for gas exchange in the body.
Hyperventilation is a condition characterized by:
An increased rate of breathing.
True or False? Hyperventilation can be caused by hypoxia.
True. Though that is not the only cause, it does make it difficult to differentiate between the two conditions.
Which of the four types of hypoxia is caused by the reduction of the partial pressure of oxygen?
Hypoxic.
What type of hypoxia is caused by a restriction in normal circulation or inadequate blood flow to the tissues?
Stagnant.
Alcohol or drug use can cause what type of hypoxia?
Histotoxic.
When observing someone, which of the following may be a sign of hypoxia?
Rapid breathing.
Which of the following may be one of the more dangerous symptoms of hypoxia?
Euphoria.
How do you treat hypoxia?
100% oxygen breathed slowly.
