AE101

Card Set Information

 Author: Anonymous ID: 247156 Filename: AE101 Updated: 2013-11-16 11:13:33 Tags: AE101 Folders: Description: AE101 Show Answers:

Home > Flashcards > Print Preview

The flashcards below were created by user Anonymous on FreezingBlue Flashcards. What would you like to do?

1. Define vector
is a quantity that represents magnitude and directions
2. Define displacement
The distance and direction of a body's movement
3. Define velocity
the speed and direction of a body's movement
4. Define density
• mass per unit of volume
• D=mass/volume
5. Define acceleration
the rate of a body's change of velocity
6. Define force
• a push or pull on a body
• mass X acceleration
7. Define work
what a force acts upon a body and moves it
8. Define power
the rate of doing work
9. Define moment
• what is created when a force is applied at some distance from an axis or fulcrum, producing rotation about that point
• M=force X distance
10. Define potential energy
the ability of a body to do work because of tis position or state of being
11. Define kinetic energy
ability of a body to do work because or its motion
12. Newton's First Law of Motion
• Law of Equilibrium
• a body at rest tends to remain at res 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
• T6 in level unaccelerated flight
13. Newtons 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
• Thrust of a/c is greater than its drag, a/c will accelerate until drag=thrust
14. Newton's third law
• Law of Interaction
• for every action, there is an equal and opposite reaction
• Rearward force of a a/c propeller's propwash causes an a/c to thrust forward at an equal amount of force
15. Define ambient static pressure
• A measurement of the weight of an air column over a specific area
• As altitude increases, there are less particles in a given column of air, thus ambient static pressure is less, because the column  of air above you weighs less
16. Define temperature
The measure of the average kinetic energy of the air particles
17. What law is this formula for?
Pressure=(density)(gas constant)(temperature)
General gas law
18. If you _____ temperature but keep density constant, then it follows that pressure must rise.
Increase
19. If ______ is kept constant then there is an inverse relationship between density and temperature.
pressure
20. Define static pressure
the force that molecules of air exert on each other by their random movement
21. Define Dynamic pressure
a measure of impact pressure of a large group of air molecules moving together
22. Define total pressure
the sum of static and dynamic pressure
23. As the cross-sectional (diameter) are on one side of the tube gets smaller, velocity must _____ so that mass flow remains constant
increase
24. Since total pressure is constant for all points in a streamtube, if dynamic pressure _______ at a point then static pressure must _____ at the same point.
increase; decrease
25. dynamic pressure over an airfoil in a tube _____ because the fluid velocity _______. Static pressure must ____ at the airfoil surface.
• increase; increase; decrease
• dynamic pressure and fluid velocity are directly related; while static pressure is inversely related
26. Define true altitude
the actual height above mean seal level
27. Define pressure altitude
height measured above a standard datum plane
28. Define density altitude
pressure altitude corrected for temperature deviations form the standard atmosphere
29. At hotter temperatures, the air becomes less dense and _____ ____ _____.
density altitude increases
30. Define true airspeed
the actual speed at which an aircraft moves through an air mass
31. What pressure does the airspeed indicator show?
• dynamic pressure
• Takes total pressure through pitot tube, subtracts static pressure from static ports = dynamic pressure or IAS
32. TAS will _______ if IAS is held constant while climbing to a higher altitude.
• increase
• 3 knots/1000'
33. Define calibrated arispeed
indicated airspeed corrected for either indicator error, or position errors
34. Define equivalent airspeed
calibrated airspeed corrected for compressibility effects
35. ICE-T
• IAS is ≤ CAS which is > EAS but < TAS
36. A _____ is a streamlined shape designed to produce lift as it moves through air
airfoil
37. Define mean camber line (MCL)
• line drawn from the leading edge to the trailing edge, halfway between the upper and lower surface of the airfoil
38. Define chordline
• Straight line drawn through leading edge to trailing edge on an airfoil
• Chord is measured from leading edge to trailing edge
39. Where is the root chord and tip chord measured?
• Root chord - wing root
• Tip chord - wing tip
• Average chord is average of all chords from wing root to wing tip
40. Define camber
• The curvature of the mean camber line of an airfoil
• Maximum distance between mean camber line and chord line
41. Airfoil types:
• symmetric airfoil - zero camber
• Positive - MCL is above chord
• Negative - MCL below chord
42. Airflow that travels along the span of the wing parallel to leading edge and does not create lift.
Spanwise flow
43. Air that flows at right angles to leading edge and produces lift.
Chordwise flow
44. Pitch attitude
angle between longitudinal axis and horizon
45. Flight path
apparent movement through an air mass
46. Relative wind
motion of the air with respect to the motion of the aircraft
47. Angle of attack (AOA)
angle between chordline and relative wind
48. Angle of incidence
angle between aircrafts longitudinal axis and chordline of wing
49. Dihedral angle
upslope or downslope of wings when viewed from the front
50. Wingspan
• Distance wingtip to wingtip
• T6 - 33'5"
ratio of an aircrafts weight to the surface area of the wings
52. Wing taper
• reduction in the chord for a given airfoil from root to tip
• provides reduced weight, increased structural stiffness
53. Aspect ratio
• the ratio of wingspan to the average chord
• Glider- high aspect ration; fighter- low aspect ratio
• T6 - 35:1
54. The point where all aerodynamic forces are acting.
• aerodynamic center/ center of lift
• typically aft of aircrafts CG to provide longitudinal stability around the lateral (pitch) axis

What would you like to do?

Home > Flashcards > Print Preview