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Turbulence

Turbulence is a dangerous phenomenon that all aircrafts encounter. Answer questions related to turbulence in 20 minutes with this quiz
Quiz by SkypeGPre
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Last updated: December 11, 2022
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First submittedDecember 11, 2022
Times taken1
Average score10.0%
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Hint
Answer
Plane axis that is concerned with centerline, impacts front-back movement
Roll
Plane axis that is perpendicular to the wings and impacts tail-nose movement
Yaw
Plane axis that is perpendicular to the centerline
Pitch
Something that impacts turbulence
Increased airspeed/non-level flight/ascending patterns/descending patterns/decreased aircraft weight/decreased wing surface area/increased altitude/decreased density
Turbulence where this is no change in altitude/attitude of aircraft
CHOP
Slight, erratic changes in altitude/attitude
Light turbulence
Slight, erratic changes with no change in altitude/attitude
Light CHOP
Changes to altitude and attitude of the aircraft where the pilot is still in control
Moderate turbulence
Rapid bumps or jolts with no change in altitude/attitude
Moderate CHOP
Large, abrupt changes in altitude/attitude, large variations in indicated airspeed
Severe turbulence
Classifications that CHOP does not exist for
Severe/Extreme
Aircraft violently tossed around and impossible to control
Extreme turbulence
Occurs within < 15,000 ft of the atmosphere, in the planetary voundary layer
Low-level turbulence
Surface heating will relate to this
Low-level thermal turbulence
Surface level winds and friction will impact this
Mechanical low-level turbulence
Hint
Answer
The principle where, if a fluid is compressed into a narrow space, it will speed up as it races to get out of the narrow compression
Bernoulli's Pinrciple
Low-level turbulence generated by aircraft that occurs < 15,000 ft AGL. Frictional forces in the PBL influence it
Wake
This is turbulence that is more influenced by irregular air movements
Upper-level turbulence
T or F: Clear Air Turbulence is a lower-level turbulence that is completely clear
F
Areas of strongest Clear Air Turbulence will be in areas of strong ____ _____ and _____ _______
wind shear/stable layers
Name cloud formations that indicate the presence of clear air turbulence
Gravity waves/Kelvin-Helmholtz waves
The most important feature for identifying where areas of clear air turbulence will be
Polar front jet
Severe upper-level turbulence associated with "mountain lee waves"
Mountain Waves
Dynamics will cause these types of circulations, but different temperature air masses will be involved
Indirect thermal circulation
Temperature gradients will cause these types of circulations
Direct thermal circulation
Form from eddies off of mountain waves. Stationary/slow in nature
Rotor clouds
Pancake-like clouds that will indicate strong wind shear at the top of mountains
Standing lenticular clouds
A cloud that forms when air travels windward and descends rapidly due to a stable layer at the top of a mountain
Cap cloud
A strong area of subsidence on the leeward side of a mountain
Foehn Gap
Some patterns that indicate enhanced turbulence threats are:
Cutoff lows/sharp ridges/sharp troughs/negative tilt troughs/confluent and diffluent jet area/deformation zone
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