AVIT 323 block 9 Questions & Answers
100% Correct!!
Aerodynamics - ANSWERSThe study of the behavior of moving air and the forces it
produces
Force - ANSWERSThe intensity of push or pull on an object whether it moves or not.
What are the two quantities that characterize force? - ANSWERSStrength or magnitude
of the force.
Direction of the pushing or pulling.
What are the three forces acting on an engine? - ANSWERSThrust, weight,
aerodynamic force
What causes air pressure and creates lift and drag? - ANSWERSAerodynamic force
Scalars are used to - ANSWERSspecify volume, speed and temperature
Scalars can be - ANSWERSpostive, negative, or zero
What must be specified when using scalars - ANSWERSDirection
Define Vectors - ANSWERSa mathematical quantity with both magnitude and direction
Vector Resolution - ANSWERSDesire to replace a given vector with two or more other
vectors this is called a COMPONENT vector.
Moment or torque - ANSWERSA rotational force that results from applying a force away
from the point of rotation
Torque= - ANSWERSradius (arm) x force
Pitching moment - ANSWERSElevator
Yawing moment - ANSWERSRudder
Rolling moment - ANSWERSAilerons
Equilibrium - ANSWERSA state of rest or balance to the equal action of opposing
forces.
, Exists when sum of the moment is 0.
Can the airplane be climbing or descending in equilibrium? - ANSWERSYes
Newton Law 1 - ANSWERSObject at rest stays at rest an object in motion stays in
motion until....Inertia, speed, velocity, acceleration.
Define Inertia - ANSWERSBodys resistance to change
Define speed - ANSWERSHow fast a body is going
Define Velocity - ANSWERSHow fast a body is going in a certain direction
Define Acceleration - ANSWERSHow fast velocity is changing
Newtons 2nd Law - ANSWERSIf a force acts on a body, the body will accelerate in
direction of force under the following criteria.
Newtons 3rd Law - ANSWERSFor every action there is an equal and opposite reaction
Define Work - ANSWERSThe force times the displacement through which the force acts
Joule - ANSWERSThe energy exerted by a force of one newton acting to move an
object through a distance of one meter
Power - ANSWERSMeasure of how quickly work is done.
unit for power - ANSWERShorsepower
Law of energy - ANSWERSThe amount of energy always remains the same, it just
changes forms
Potential Energy - ANSWERSThe work done to raise an object (height) will be
recovered when the object is allowed to fall.
Can all energy be stored as potential energy? - ANSWERSNo
Kinetic energy - ANSWERSEnergy of motion. Scalar quantity that is always greater than
or equal to zero
As an object falls - ANSWERSKinetic energy increases and potential energy decreases.
Potential energy just before release is equal to Kinetic energy at impact.
10 lb weight suspended at 5 ft, what is its potential energy? - ANSWERS50 lbs
100% Correct!!
Aerodynamics - ANSWERSThe study of the behavior of moving air and the forces it
produces
Force - ANSWERSThe intensity of push or pull on an object whether it moves or not.
What are the two quantities that characterize force? - ANSWERSStrength or magnitude
of the force.
Direction of the pushing or pulling.
What are the three forces acting on an engine? - ANSWERSThrust, weight,
aerodynamic force
What causes air pressure and creates lift and drag? - ANSWERSAerodynamic force
Scalars are used to - ANSWERSspecify volume, speed and temperature
Scalars can be - ANSWERSpostive, negative, or zero
What must be specified when using scalars - ANSWERSDirection
Define Vectors - ANSWERSa mathematical quantity with both magnitude and direction
Vector Resolution - ANSWERSDesire to replace a given vector with two or more other
vectors this is called a COMPONENT vector.
Moment or torque - ANSWERSA rotational force that results from applying a force away
from the point of rotation
Torque= - ANSWERSradius (arm) x force
Pitching moment - ANSWERSElevator
Yawing moment - ANSWERSRudder
Rolling moment - ANSWERSAilerons
Equilibrium - ANSWERSA state of rest or balance to the equal action of opposing
forces.
, Exists when sum of the moment is 0.
Can the airplane be climbing or descending in equilibrium? - ANSWERSYes
Newton Law 1 - ANSWERSObject at rest stays at rest an object in motion stays in
motion until....Inertia, speed, velocity, acceleration.
Define Inertia - ANSWERSBodys resistance to change
Define speed - ANSWERSHow fast a body is going
Define Velocity - ANSWERSHow fast a body is going in a certain direction
Define Acceleration - ANSWERSHow fast velocity is changing
Newtons 2nd Law - ANSWERSIf a force acts on a body, the body will accelerate in
direction of force under the following criteria.
Newtons 3rd Law - ANSWERSFor every action there is an equal and opposite reaction
Define Work - ANSWERSThe force times the displacement through which the force acts
Joule - ANSWERSThe energy exerted by a force of one newton acting to move an
object through a distance of one meter
Power - ANSWERSMeasure of how quickly work is done.
unit for power - ANSWERShorsepower
Law of energy - ANSWERSThe amount of energy always remains the same, it just
changes forms
Potential Energy - ANSWERSThe work done to raise an object (height) will be
recovered when the object is allowed to fall.
Can all energy be stored as potential energy? - ANSWERSNo
Kinetic energy - ANSWERSEnergy of motion. Scalar quantity that is always greater than
or equal to zero
As an object falls - ANSWERSKinetic energy increases and potential energy decreases.
Potential energy just before release is equal to Kinetic energy at impact.
10 lb weight suspended at 5 ft, what is its potential energy? - ANSWERS50 lbs
