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30 Cards in this Set
- Front
- Back
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*Define Scalar Quantity*
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A quantity that represents only magnitude
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*Define Vector*
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A quantity that represents magnitude and direction
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Define Force
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A push or a pull exerted on a body or mass times acceleration
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Define Mass
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The quantity of molecular material that comprises an object
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Define Volume
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The amount of space occupied by an object
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*Define Density*
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Mass per unit volume
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Define Weight
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The force with which a mass is attracted toward the center of the earth by gravity
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*Define Moment*
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Created when a force is applied at some distance from an axis or fulcrum and produces rotation
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Define Work
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Force times the distance of displacement
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*Define Power*
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Work done per unit time
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Define Energy
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A scalar measure of a bodies capacity to do work
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Define Potential Energy
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The ability of a body to do work because of its position or state of being. It is a function of weight times height
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Define Kinetic Energy
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The ability of a body to do work because of its motion. It equals on half of mass time velocity squared
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Identify Newton's three Laws of Motion
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EAR
*Equilibrium* - A body at rest tends to stay at rest unless acted upon by an outside force Acceleration - An unbalanced force acting on a body produces and acceleration in the direction of the force that is directly proportional to the force and inversely proportional to the mass of the body Interaction - For every action there is an equal and opposite reaction |
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*Define, compare, and contrast equilibrium and trimmed flight*
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Equilibrium flight exists when the sum aof all forces AND the sum of all moments around the COG are equal to zero.
Trimmed flight exists when the sum of all moments around the COG is equal to zero. e.g. an airplane in a constant rate, constant angle of bank turn is in trimmed, but not equilibrium flight. |
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Define Static Pressure
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The pressure particles of air exert on adjacent bodies.
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Define Air Density
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The total mass of air particles per unit volume
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Define Temperature
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Average random kinetic energy
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Define Lapse Rate
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2 degrees C or 3.57 degrees F per 1000' until 36,000'
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Define Humidity
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The amount of water vapor in the air. As humidity increases, air density decreases
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Define Viscosity
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The measure of the air's resistance to flow and shearing. *Air viscosity increases with an increase temp.*
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Define Local Speed of Sound
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The rate at which sound waves travel through a particular air mass. As the temp of air increases, the speed of sound increases.
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State the pressure, temp, lapse rate , and air density at sea level in the standard atmosphere using both metric and english units of measure
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Static Pressure: 29.92 in/Hg (1013.25 mbar)
Temp: 59°F (15°C) Avg Lapse Rate: 3.57°F / 1000' (2°C) LSOS: 661.7 knots (340.4 m/s) |
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Sate the relationships between altitude and temp, pressure, air density, and local speed of sound within the standard atmosphere.
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As altitude increases
Temp: decreases Pressure: decreases Air Density: decreases LSOS: decreases |
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*State the relationships between pressure, temp, and air density using the General Gas Law.*
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Pressure is equal to density time temperature
If pressure remains constant, there is an inverse relationship between density and temp. |
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Define Viscosity
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The measure of the air's resistance to flow and shearing. *Air viscosity increases with an increase temp.*
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Define Local Speed of Sound
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The rate at which sound waves travel through a particular air mass. As the temp of air increases, the speed of sound increases.
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State the pressure, temp, lapse rate , and air density at sea level in the standard atmosphere using both metric and english units of measure
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Static Pressure: 29.92 in/Hg (1013.25 mbar)
Temp: 59°F (15°C) Avg Lapse Rate: 3.57°F / 1000' (2°C) LSOS: 661.7 knots (340.4 m/s) |
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Sate the relationships between altitude and temp, pressure, air density, and local speed of sound within the standard atmosphere.
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As altitude increases
Temp: decreases Pressure: decreases Air Density: decreases LSOS: decreases |
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*State the relationships between pressure, temp, and air density using the General Gas Law.*
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Pressure is equal to density time temperature
If pressure remains constant, there is an inverse relationship between density and temp. |
