Aerodynamics 1

Question 1

Load factor is the lift divided by the ________ of the aircraft

Answer 1

divided by the total weight of the aircraft

Question 2

For a given angle of bank, in any airplane, the load factor imposed in a coordinated constant altitude turn is ________ and the stall speed __________

Answer 2

is constant and the stall speed increases.

Question 3

what is the difference on the load factor for Boeing 737 vs Piper

Answer 3

Load factor of 2 is the same

Question 4

Why during the constant turn, stall speed increases?

Answer 4

not lose altitude, the pilot must increase the wing’s angle of attack

Question 5

Most general

aviation airplanes are designed for a load limit of _____Gs.

Answer 5

3.8

Question 6

Maximum turning performance is

accomplished when an airplane has both a ______ rate of turn and _______ radius of tum,

Answer 6

fast rate of tum and minimum radius of tum,

Question 7

rate of tum and minimum radius of turn are affected by

Answer 7

Airspeed and Angle of Bank

Question 8

What determines the Max bank angle

Answer 8

The airplane’s limiting load factor determines the maximum bank angle

Question 9

In a rapid recovery from a dive, the effects of load factor would cause the stall speed to_______

Answer 9

Increase

Question 10

Any aircraft, within the limits of its structure, may be stalled at any _______

Answer 10

airspeed.

Question 11

aircraft’s stalling speed increases in proportion to the square root of the load
factor. What do you need to know?

Answer 11

• The danger of inadvertently stalling the aircraft by increasing the load factor, as in a steep tum or spiral;
• When intentionally stalling an aircraft above its design maneuvering speed, a tremendous load factor is imposed.

Question 12

Stalling Speed is 50
Load Factor is 4
Stalling speed is______

Answer 12

100

Question 13

While maintaining a constant angle of bank and altitude an coordinated tum, an Increase in
airspeed will ________ the rate of turn resulting in _______ in load factor.

Answer 13

decrease the rate of turn resulting in no change in load factor.

Question 14

What is rate of turn?

Answer 14

the number of degrees ( expressed in degrees per second) of heading change that an aircraft makes.

Question 15

If the airspeed is increased and the ROT desired is to be constant, the angle of bank must be ________, otherwise, the ROT ________

Answer 15

increased, otherwise, the ROT decreases

Question 16

You are making a level turn at a constant bank angle. If you vary the rate of turn, the load
factor will

Answer 16

remain constant.

Question 17

The need to slow an aircraft below VA is brought about by the following weather phenomenon:

Answer 17

Turbulence which causes an increase in stall speed.

Question 18

There are two types of load factors factored into aircraft design:

Answer 18

limit load and ultimate load.

Question 19

What is the limit load?

Answer 19

causes a bending of the aircraft structure that does not return to the original shape.

Question 20

What is ultimate load?

Answer 20

the limit load and at which point the aircraft material experiences structural failure (breakage).

Question 21

Speeds up to, but not exceeding, the maneuvering speed allow an aircraft to ________ prior to experiencing an increase in
load factor that would exceed the limit load of the aircraft.

Answer 21

stall

Question 22

In theory, if the airspeed of an airplane is doubled while in level flight, parasite drag will become

Answer 22

four times greater

Question 23

What happens if AOA of a symmetrical airfoil were zero?

Answer 23

no pressure differential, and consequently, no downwash

component and no induced drag

Question 24

the lower the airspeed, the _______the AOA required to produce _____ equal to the aircraft’s ______ and, therefore, the greater ________ drag.

Answer 24

greater the AOA required to produce lift equal to the aircraft’s weight and, therefore, the greater induced drag.

Question 25

If the airspeed is increased from 90 knots to 135 knots during a level 60 “banked turn , the load
factor will

Answer 25

Remain same but radius of the turn will increase

Question 26

At a constant altitude, during a coordinated tum in any aircraft, the load factor is the result of two forces:

Answer 26

1) centrifugal force

2) weight.

Question 27

When Centrifugal force and weight are affecting the load factor, how come load factor is same on a given bank angle?

Answer 27

the higher the speed, the

slower the ROT. This compensates for added centrifugal force, allowing the load factor to remain the same.

Question 28

Explain the Glide Speed

Answer 28

1) maximize the distance flown in an emergency
2) Airplane travels the greatest forward distance for a given loss of altitude in still air.
3) This best glide airspeed occurs at the highest lift-to-drag ratio (LID).

Question 29

Power-on stalls occur at lower airspeeds in _______ banks

Answer 29

Power-on stalls occur at lower airspeeds in shallower banks

Question 30

Raising the flaps will result in an ________ in stall speed, whether turning or not.

Answer 30

Raising the flaps will result in an increase in stall speed, again, whether turning or not.

Question 31

Flap extension during landings provides several advantages by:

Answer 31

• Producing greater lift and lower landing speed,
• Producing greater drag, a steeper descent angle without airspeed increase, and
• Reducing the length of the landing roll.

Question 32

Name the four fundamentals involved in maneuvering an aircraft.

Answer 32

Straight and level flight, turns , climbs , and descents

Question 33

Stall speed is affected by

Answer 33

weight, load factor, and power.

Question 34

A rectangular wing, as compared to other wing planforms, has a tendency to stall first at the

Answer 34

wing root, with the stall progression toward the wing tip.

Question 35

Thrust is the force against force of _____

Answer 35

drag

Question 36

Thrust is parellel to ____________

Answer 36

longitudinal axis

Question 37

Drag acts parallel to _________

Answer 37

relative wind/flight path

Question 38

Lift act perpendicular to________

Answer 38

lateral axis

Question 39

Weight acts vertically ________

Answer 39

downward

Question 40

The angle of attach which the plane stall remains same regardless of

Answer 40

1) weight
2) Dynamic Pressure
3) Bank angle
4) Pitch Attitude