Aerodynamics and Aircraft

Question 1

Lateral axis is

Answer 1

Along the wings

Question 2

Useful Load

Answer 2

total weight of passengers, fuel, baggage and pilots

Question 3

Basic Empty Weight

Answer 3

Standard Empty Weight plus optional equipment (GPS, ect.)

Question 4

Standard Empty Weight

Answer 4

airframe plus engine, oil, hydro, unusable fuel

Question 5

Single engine failure on a multiengine plane reduces climb by…

Answer 5

80%

Question 6

Banking toward the operative prop…

Answer 6

increases climb performance

Question 7

The critical engine on most light multiengine planes with clockwise rotating props is the…

Answer 7

left engine, because of p-factor of the right prop

Question 8

How does a cruise propeller differ from a climb propeller during cruise operations?

Answer 8

A cruise prop has a higher pitch therefore more drag. More drag results in lower RPM and less hp capability. Decreases performance during takeoff and climb but increases efficiency during cruise flight.

Question 9

Phugoid Oscillation

Answer 9

A slow rhythmic change in pitch and altitude, accompanied by changes in airspeed as aircraft climbs and descends.

Question 10

In theory, if airspeed of an aircraft is cut in half while in level flight, parasite drag will become…

Answer 10

one fourth as much

Question 11

Profile drag =

Answer 11

Skin friction

Question 12

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

Answer 12

four times greater

Question 13

While maintaining a constant angle of bank and altitude in a coordinated turn, an increase in airspeed will..

Answer 13

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

Question 14

Why does increasing the speed also increase lift?

Answer 14

The increased impact of the relative wind on an airfoils lower surface creates a greater amount of air being deflected downward

Question 15

The load factor in a level coordinated turn with 60 degrees of bank is

Answer 15

2 Gs

Question 16

What effect does uphill runway slope have on takeoff performance

Answer 16

increases takeoff distance

Question 17

Lift on a wing is most properly defined as the…

Answer 17

force acting perpendicular to the relative wind.

Question 18

The angle of attack of a wing directly controls the…

Answer 18

distribution of pressure acting on the wing.

Question 19

Lift Equation

Answer 19

Lift= CL x P x V squared x S

Question 20

A glide slope is being flown. What characteristics should be observed when a headwind shears to a constant tailwind?

Answer 20

Pitch attitude- decreases, Required thrust- increases then decreases, vertical speed increases, IAS decreases then increases to approach speed

Question 21

To establish a climb after takeoff in a plane with a constant speed prop. the output of the engine is reduced to climb power by decreasing manifold pressure and…

Answer 21

decreasing RPM by increasing prop blade angle.

Question 22

Load factor is the lift generated by the wings of an aircraft at any given time…

Answer 22

divided by the total weight of the aircraft.

Question 23

If necessary to take off from a slushy runway, the freezing of landing gear mechanisms can be minimized by…

Answer 23

recycling the gear