Aerodynamic Forces Flashcards
Lift on a wing is most properly defined as the…
…force acting perpendicular to the relative wind.
Bags weighing 90 lbs are placed in a normal category airplane’s baggage compartment which is placarded at 100 lbs. if the airplane is subjected to 3.5G positive load factor, the total load factor of the baggage is…
315 lbs and would not be excessive
Why is it necessary to increase back elevator pressure to maintain altitude during a turn?
To compensate for the…
…loss of the vertical component of lift.
Which airspeed would a pilot be unable to identify by the color coding of an airspeed indicator?
Maneuvering speed
Why should speeds above Vne be avoided?
Design limit load factors may be exceeded if gusts are encountered
A propeller rotating clockwise as seen from the rear creates a spiraling slipstream. The spiraling slipstream along with torque effect tends to rotate thenairplane to the…
Left around the vertical axis and left around the longitudinal axis
If an aircraft with a gross weight of 2000 lbs was subjected to a 60 deg constant altitude bank, the total load factor would be …
4000 lbs
In theory, if the airspeed of an airkane is doubled while in level flight, parasitic drag will become…
Four times greater
Max structural crushing speed is the max speed the aircraft can operated during…
Normal operations
The need to slow an airplane below Va is brought about by the following weather phenomenon…
Turbulence which causes an increase in stall speed
The ratio between the total airload imposed on the wing and the gross weight of the airplane in flight is known as…
Load factor and directly affects stall speed
A ilit is entering an area where significant clear air turbulence has been reported. Which action is appropriate upon reaching the first ripple
Adjust airspeed to that recommended for rough air
Name the four fundamentals involved in maneuvering an aircraft
Straight and level flight, turns climbs and descents
As airspeed decreases in level flight below that speed for maximum lift/drag ratio, total drag of an airplane….
Increases because of increased induced drag
On a wing the force of lift acts perpendicular to, and the the force of drag acts parallel to the…
Flightpath
What increase in load factor would taken place if the angle of bank were increased from 60 to 80
4Gs
While maintaining a constant angle of bank and altitude in a coordinated turn, and increase in airspeed will…
Decrease the rate of turn resulting in change in load factor
Which is true regarding the forces acting on an aircraft in a steady state descent? The sum of all…
Forward forces is equal to the sum of all rearward forces
At an airspeed represented by point B, in steady flight, the pilot can expect to obtain the airplane’s maximum…
(The figure depicts a drag vs velocity chart. Induced drag, parasite drag and total drag are drawn on the chart. Point B is the intersection of the induced and parasite drag lines)
Glide range
If severe turbulence is encountered during flight, the pilot should reduce the airspeed to…
Design-maneuvering speed
While holding the angle of bank constant in a level turn, if the rate of turn is varied the load factor would…
Remain constant regardless of the air density and the resultant lift vector
Airplane wing loading during a level coordinated turn in smooth air depends on the…
Angle of bank
Load factor is the lift generated by the wings of an aircraft at any given time…
Divided by the total weight of the aircraft
Which statement is true, regarding the opposing forces acting on an airplane in steady state level flight?
These forces are equal
By changing the angle of attack of a wing, the pilot can control the airplane’s…
Lift, airspeed and drag
A aircraft wing is designed to produce lift resulting from a difference in the…
Higher air pressure below the wing’s surface and lower pressure air above the wing’s surface
If the airspeed is increased from 90 knots to135 knots during a level 60 deg banked turn, the load factor will…
Remain the same but the radius of turn will increase
During the transition from straight and level flight to a climb, the angle of attack is increased and lift…
Is momentarily increased
Which is true regarding the force of lift in steady, unaccelerated flight?
(Regarding the relationship between airspeed and angle of attack)
There is a corresponding indicated airspeed required for every angle of attack to generate sufficient lift to maintain altitude
If airspeed is increased during a level turn, at action would be necessary to maintain altitude? The angle of attack…
Must be decreased or angle of bank increased
Which statement is true relative to changing angle of attack?
( as it relates to drag)
An increase in angle of attack will increase drag
Lift on a wing is most properly defined as the…
Force acting perpendicular to the relative wind
In theory, if the angle if attack and other factors remain constant and the airspeed is doubled, the lift produced at the higher speed will be…
Four times greater than at the lower speed
