AE101 Basic Theory Flashcards
______ is done when a force acts upon a body and moves it. Equal to force (F) times distance of displacement (s)
Work (W), W = F x s
____ is the rate of doing work or work done per unit of time (t), it can also be measured as Force (F) times Velocity (s/t).
Power (P), P = W/t or P = F (s/t)
____ is a unit of measurement used to express the amount of power being produced.
Horsepower, HP = P/550
___ is what is created when a force is applied at some distance from an axis or fulcrum, producing rotation about that point.
Moment (M), Moment = Force x Distance (D)
The distance from the axis or fulcrum to the point of force is called the ___ ___.
Moment Arm
A body at rest tends to remain at rest and a body in motion tends to remain in motion in a straight line at a constant velocity unless acted upon by some unbalanced force.
Newton’s 1st Law of Motion, “Law of Equilibrium”
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.
Newton’s 2nd Law of Motion, “Law of Acceleration”
For every action there is an opposite and equal reaction.
Newton’s 3rd Law of Motion, “Law of Interation”
The tendency for a body to remain at rest or in motion is called ___.
Inertia
What is the general gas law?
P = ρRT (Pressure = density x temperature x universal gas constant)
What is the subsonic mass flow equation?
A1V1 = A2V2 (A = area, V = volume)
According to Bernoulli’s equation, Pt = Ps + q (dynamic pressure), if dynamic pressure increases at a point then ___ ___ must decrease at the same point.
static pressure
___ is the actual height above mean sea lever.
true altitude
___ is a height measured above a standard datum plane (the actual elevation at which the barometric pressure is equal to 29.92 in-Hg). The datum plane is at sea level ona standard day.
pressure altitude
On a standard day what two altitude measurements are equal?
pressure altitude and true altitude
___ is pressure altitude corrected for temperature deviations from the standard atmosphere.
density altitude
___ is the actual speed at which an aircraft moves through an air mass.
Ture Airspeed (TAS)
___ is the speed at which an aircraft moves relative to the ground. It is true airspeed corrected for winds.
Groundspeed (GS)
___ is the speed that the pilot reads off the airspeed indicator. The airspeed indicator takes the total pressure of the air through the pitot tube and subtracts the static pressure from the static port to obtain dynamic pressure.
Indicated Airspeed (IAS)
At a constant IAS, ___ will increase approximately ___ knots for each thousand foot increase in altitude.
IAS, 3
___ is indicated airspeed corrected for either indicator error of for minor sensing errors caused by the location of the pitot-static system.
Calibrated Airspeed (CAS)
___ is calibrated airspeed corrected for errors caused by compressibillity effects (ex: air molecules “bunch up” and can’t flow freely through the pitot tube at high airspeeds).
Equivalent airspeed (EAS)
___ ___ ___ is a line drawn from the leading edge to the trailing edge, halfway between the upper and lower surface of the airfoil.
Mean Camber Line (MCL)
___ is an infinitely long straight line drawn through the leading and trailing edges of the airfoil.
Chordline