AVIA 305 TEST PREP EXAM QUESTIONS
AND VERIFIED ANSWERS; GRADED A+
A decrease in temperature - correct answer- affects air
density by increasing the density
A helicopter has a rotor diameter of 30 ft and it is being
operated in a hover at 286.5 rpm. Find the tip speed images of
the rotor. - correct answer- Vt = r(rpm) / 9.55
r = half of the total diameter (one rotor blade tip extends half
the total distance)
30ft / 2 = 15ft
Vt = 15ft (286.5 rpm) / 9.55
Vt = 4,297..55
Vt = 450 fps
,A jet airplane is climbing at a constant airspeed in no‐wind
conditions. The plane is directly over a point on the ground that
is 4 statute miles from the takeoff point and the altimeter reads
15,840 ft. Find the tangent of the plane's climb angle and the
distance that it has flown through the air. - correct answer-
Find the tangent of the plane's climb angle:
Convert Altitude Into Miles: 15,840 ft / 5280ft = 3sm
Tan = Height / Distance
Tan = 3sm / 4sm
Tan = 0.75
Find the Distance that it has flown through the air:
Da = √ Distance² + Height²
Da = √ 4sm² + 3sm²
, Da = √ 4 x 4 + 3 x 3
Da = √ 25sm
Da = 5sm
A low‐tailed airplane with static ports beneath the wing leaves
ground effect after takeoff. It will have: - correct answer-
increased drag, nose‐up pitch, higher IAS
A pilot is flying an airplane at the speed for best range under no
wind conditions. A tailwind is encountered. To get best range
now the pilot must - correct answer- slow down by an
amount less than the wind speed.
Adverse pressure gradient on an airfoil is found - correct
answer- from the point of minimum pressure to the trailing
edge.
Air in the boundary layer - correct answer- has zero
velocity at the wing surface.
AND VERIFIED ANSWERS; GRADED A+
A decrease in temperature - correct answer- affects air
density by increasing the density
A helicopter has a rotor diameter of 30 ft and it is being
operated in a hover at 286.5 rpm. Find the tip speed images of
the rotor. - correct answer- Vt = r(rpm) / 9.55
r = half of the total diameter (one rotor blade tip extends half
the total distance)
30ft / 2 = 15ft
Vt = 15ft (286.5 rpm) / 9.55
Vt = 4,297..55
Vt = 450 fps
,A jet airplane is climbing at a constant airspeed in no‐wind
conditions. The plane is directly over a point on the ground that
is 4 statute miles from the takeoff point and the altimeter reads
15,840 ft. Find the tangent of the plane's climb angle and the
distance that it has flown through the air. - correct answer-
Find the tangent of the plane's climb angle:
Convert Altitude Into Miles: 15,840 ft / 5280ft = 3sm
Tan = Height / Distance
Tan = 3sm / 4sm
Tan = 0.75
Find the Distance that it has flown through the air:
Da = √ Distance² + Height²
Da = √ 4sm² + 3sm²
, Da = √ 4 x 4 + 3 x 3
Da = √ 25sm
Da = 5sm
A low‐tailed airplane with static ports beneath the wing leaves
ground effect after takeoff. It will have: - correct answer-
increased drag, nose‐up pitch, higher IAS
A pilot is flying an airplane at the speed for best range under no
wind conditions. A tailwind is encountered. To get best range
now the pilot must - correct answer- slow down by an
amount less than the wind speed.
Adverse pressure gradient on an airfoil is found - correct
answer- from the point of minimum pressure to the trailing
edge.
Air in the boundary layer - correct answer- has zero
velocity at the wing surface.
