AE103 Aerodynamic Fundamentals Flashcards
Vector
quantity of magnitude and direction
Force
push or pull, force = mass x accelerations
Mass
quantity of molecular material
Volume
amount of space occupied
Density
density = mass/volume
Weight
weight = mass x gravity
Moment
force applied from a distance from a fulcrum
Work
when force moves a body
Power
power = work/time
Energy
capacity to do work
Potential Energy
ability of a body to do work because of its position or state of being
Kinetic Energy
ability of a body to do work because of its motion
Total Energy
sum of potential and kinetic energy
Conservation of Energy
the transformation of energy from one form to another
Equilibrium
the lack of acceleration in any direction
Newton’s second law,
“Law of Acceleration”
An unbalanced force acting upon a body produces an acceleration in the direction of the force that is directly proportional to the force and inversely proportional to the mass of the body.
Acceleration
Acceleration = Force/Mass
Newton’s third law,
“Law of Interaction”
For every action there is an equal and opposite reaction
Ambient Static Pressure
the weight of an air column over a specific area
Air Density
The total mass of air particles for a given volume
Temperature
the average kinetic energy of air particles
What happens to air density and temperature as altitude increases?
both will decrease
What atmospheric properties affect pressure?
Pressure = Density x Universal Gas Constant x Temperature (P=pRT)
True Altitude
Height above mean sea level (MSL)
Pressure Altitude
Height above standard datum place (29.92 inHg)
Density Altitude
Pressure altitude corrected for temperature
Indicated Airspeed (IAS)
Airspeed read from airspeed indicator (ASI)
Calibrated Airspeed (CAS)
IAS corrected for instrument error
Equivalent Airspeed (EAS)
CAS corrected for compressibility
True Airspeed (TAS)
Speed through an air mass
What is groundspeed?
True airspeed corrected for winds