7. Aerodynamics

Question 1

V speed for best angle of climb?

Answer 1

Vx

Question 2

How does frost affect performance

Answer 2

disrupts smooth airflow over wings, reduces lift, increases drag

Question 3

What force provides the thrust in a glider?

Answer 3

Gravity

Question 4

As altitude increase, the indicated airspeed that the plane will stall at ?

Answer 4

Stays the same

Question 5

How many feet will a glider sink in 15 nm with a glide ratio of 22:1

Answer 5

15 (6000)/22 = 4090

Question 6

What do flaps do on approach & landing?

Answer 6

Steepens glide path without increasing airspeed

Question 7

An increased loadfactor will increase/decrease stall speed?

Answer 7

Increase

Question 8

Recovery from a stall requires?

Answer 8

Decrease angle of attack

Question 9

In a spin to the left, which wing is stalled?

Answer 9

Both wings are stalled in a spin.

Question 10

The angle of attack is defined as

Answer 10

Angle between the chord of the wing and the airflow

Question 11

In severe turbulence, the pilot should maintain

Answer 11

Level flight

Question 12

Spin vs spiral dive. Spiral dive =?

Answer 12

G load increases. Increase in airspeed & loss of altitude

Question 13

How does weight affect stall angle of attack?

Answer 13

Stall AOA is unaffected by weight

Question 14

Changes in the center of pressure of a wing affects the plane’s?

Answer 14

Aero balance and controllability

Question 15

What speed represents maneuvering speed?

Answer 15

Va

Question 16

In sinking air it is most efficient to fly

Answer 16

faster than best L/D speed

Question 17

4 forces acting on a plane

Answer 17

thrust, drag, lift, weight

Question 18

How does ground effect affect the plane?

Answer 18

It reduces downwash from the wing which reduces drag. Plane floats

Question 19

Wingtip vortices occur when?

Answer 19

When the plane is developing lift.

Question 20

Wingtip vortices created by large aircraft tend to?

Answer 20

sink below the aircraft, causing turbulence

Question 21

What effect would gusts and turbulence have on load factor of a glider with changes in airspeed?

Answer 21

Load factor increases with speed

Question 22

How does the wake turbulence vortex circulate around each wingtip?

Answer 22

Outward upward & around each tip

Question 23

Inherently stable plane will

Answer 23

require less effort to control

Question 24

What type of stability does the horizontal stablilizer provide during flight

Answer 24

longitudinal

Question 25

Airspeed to fly between thermals in a headwind

Answer 25

Best L/D plus half headwind

Question 26

V speed for best rate of climb?

Answer 26

Vy

Question 27

Greatest vortex strength occurs with what type of aircraft?

Answer 27

Heavy, slow, clean

Question 28

The rate of turn at any airspeed is dependent on the

Answer 28

Horizontal component of lift

Question 29

When are the 4 forces at balance?

Answer 29

level unaccelerated flight

Question 30

In calm wind, the closest airspeed to ground speed is?

Answer 30

True airspeed

Question 31

What is ground effect?

Answer 31

interference of the earth on the air flowing around the wing

Question 32

Best glide speed will give:

Answer 32

Most ground covered

Question 33

Wind condition that requires most caution when avoiding wake turbulence on landing?

Answer 33

light quartering tailwind

Question 34

Where to land or take off to avoid wake turbulence

Answer 34

Landing = beyond landing other planes landing point
Take-off = Before other plane’s take-off point

Question 35

The amount of excess load that can be imposed on a wing depends on ?

Answer 35

Speed of plane

Question 36

Speed to fly to stay in the air the longest period of time?

Answer 36

Min sink

Question 37

What is pilotage?

Answer 37

Navigation by landmarks

Question 38

What is dead reckoning?

Answer 38

Navigation by direction and airspeed

Question 39

When converting from magnetic to geographic heading add/subract westerly variation?

Answer 39

Subtract. Note that the question asks magnetic to geo. Not the typical geo to magnetic.

Question 40

Vortac radials are given as (To/From) the vortac.

Answer 40

From. 090 = east
To 090 = west. To = thru center to other side.

Question 41

When flying from a vortac and the deviation needle is deflected toward the right, what heading correction should be made to stay on that radial?

Answer 41

Turn toward the needle deflection. You are left of the radial.

Question 42

Do Vortac heading questions in test