Am I Stable?
What is stability
The tendency to remain in straight, level flight
What is the composition of the atmosphere
21% O2, 78% N, 1% water vapour and other elements
Name the 2 types of cloud formation
Stratus and cumulus
a cyclone
how is humidity in an air mass accumulated
by moving over a body of water
What are the 3 axis of an aircraft
Longitudinal, lateral, normal or vertical
what is the lowest layer of the atmosphere and what happens there
troposphere: weather occurs from presence of water vapour
What is the result of mechanical turbulence
eddies
what is veering and backing
veering: wind moves clock wise, increases altitude and wind speed
backing: wind move counter clock wise, decreases altitude and windspeed
what is due point and what happens
due point is the temperature an air mass must be cooled to at a constant pressure for clouds to form
What is the centre of gravity
The point of balance in weight, affecting pitch
What are the 3 properties of the atmosphere
capacity for expansion, compression, and mobility
what are the 4 prefixes for cloud height
strato, alto, cirro, cumulus
what is the polar front theory
The theory that says there is a transition zone between polar and equatorial air masses
according to diurnal variation, at what time does solar radiation exceed terrestrial radiation
solar radiation exceeds terrestrial radiation during the DAY (sunrise to twilight)
What happens if an aircraft with negative stability is displaced
displacement will continue to get worse
Name all layers of the atmosphere
troposphere, stratosphere, mesosphere, thermosphere, exosphere
what are the 5 lifting agents
convection, orographic lift, frontal lift, mechanical turbulence, convergence
where did this air mass come from if it is moist and cold
maritime and arctic
what is the term for the effect of earth's axis on the variation in solar radiation throughout the year
seasonal variation
What are the types of stability
Static, dynamic, neutral, positive, negative, longitudinal, lateral, vertical
what are the 4 assumptions of the International Civil Aviation Organization
Air is a perfectly dry gas, mean SLP is 15 degrees Celsius, lapse rate is 1.98 degrees per 1000 ft, mean SLP is 29.92 in of Hg
what are the properties of stable and unstable air
Stable: bad visibility, steady precipitation, and smooth flying conditions
Unstable: good visibility, showery precipitation, gusty and turbulent flying conditions
what does the Coriolis force do to air movement
causes air to move counter clock, following earth's rotation
what precipitation type forms in clouds of vertical development and is a result of a droplet being unable to exit the cloud until it freezes to a particular mass
hail