Air is a Fluid
The resistance of a fluid to changing shape or to flowing.
What is viscosity?
One of the three things related to powered flight that are negatively impacted when the air is less dense.
What is lift, power, and thrust?
The one input to the density altitude formula that you do not have to calculate.
What is OAT?
You get this when you correct Pressure Altitude for non-standard air temperature.
What is density altitude?
The formula used to represent Newton's Second Law of Motion.
What is F = ma?
The resistance in motion between two surfaces that are touching.
What is Friction?
This happens to air density as altitude increases.
What is it decreases?
The temperature and pressure on a standard day at sea level.
What is 15 degrees C and 29.92 in Hg?
The type of pilot flies the flights that collect the data for a takeoff performance chart.
What is a test pilot?
This is required to cause an object to move.
What is a force?
Of water, cooking oil, and air, the fluid that is most viscous.
What is cooking oil?
The unit of measure associated with a barometric pressure of 29.92.
What is inches of mercury?
Standard lapse rate for temperature as altitude increases.
What is 2 degrees C decrease per 1000 feet of altitude increase?
This happens to fluid friction when the velocity of the object passing through the fluid increases.
What is the fluid friction increases?
The resistance of an object to change its state of motion.
What is inertia?
The tendency of a jet of fluid to attach itself to a convex or curved surface.
What is the Coanda Effect?
One of the two measurable quantities that are used to calculate density.
What is mass or volume?
What your altimeter indicates when the plane is on the ground and the current altimeter setting is set in the altimeter.
What is field elevation (also accepetable is Pressure Altitude)?
The distance between the beginning of an airplane's movement on the runway for takeoff to the point of lift off.
What is ground roll?
Acceleration is a change in this.
What is velocity?
The name of the effect that occurs when a spinning object passing through a flow of air creates a low pressure area and a high pressure area.
What is the Magnus Effect?
Of the factors that impact air density, this one has the smallest effect.
What is humidity?
Standard lapse rate for pressure as altitude increases.
What is 1 in Hg decrease with every 1000 feet of altitude increase?
The density of air, measured in pounds per cubic foot.
What is 0.08 lbs/cubic foot
A push, pull, or twist on an object resulting from the object's interaction with another object.
What is a force?