Flashcards in #1 Deck (58)
The rate at which an object moves.
The speed of an object in a specified direction.
Is Speed a Scalar qualitiy?
Can be dragrammatically summed to find a result
Has a magnitude and direction
Define Newton's First Law
An object in space that is travelling at a constant speed will remain constant unless an external force is applied.
Define Newton's Second Law
If a force is applied to an object, the object will accelerate at a rate that is proportional to its mess and the force applied (F = ma).
Define Newton's Third Law
For every action, there is an equal and opposite reaction.
An objects capacity to do work
List the two types of energy
Kinetic and Potential
Define Kinetic Energy
The energy a body possess by virtue of it's motion
Define Potential Energy
The energy a body possess by virtue of its position in a force field
A group of molecules which are not bonded to each other
Define Gas Density
The quantity of particles in a unit of volume
What is the density of gas a function of?
Temperature and Pressure
List the four forces acting on an aircraft.
Lift, Weight, Thrust and Drag
The component of the total reaction which is perpendicular to the flight path of relative air flow.
The gravitational attraction to the Earth
The propulsive force from a jet or propeller
The component of the total reaction that is parallel to the flight path
Define the Chord Line
A straight line joining the centres of curvature of the leading and trailling edges
The maximum distance between the mean camber line and the chord line, expressed as a percentage
Define Relative Air Flow
Define the Angle of Attack (AoA)
The angle difference between the chord line and relative air flow
L = Co-efficient of Lift × 1/2 × Air Pressure (Rho [P]) × Velocity^2 × Surface of the wing
What is Lift Dependent Drag?
Induced drag through lift
Define Static stability
The initial reaction of an object after a force has been applied
Define Dynamic stability
The subsequent reaction of an object after a force has been applied
When the aircrafts Angle of Attack is greater than its critical angle (16 degrees)