Quiz: Airspeed, Airfoils, Lift, and Drag
Question 12.5 pts
An aircraft weighs 604,723 pounds and has 76% of its weight on the main
(braking) wheels. If the coefficient of friction is 0.3, what is the braking force
on the airplane?
604723 x .76 = 459589.48
459589.48 x .3 = 137876.844 lbs
Question 22.5 pts
An airplane weighs 49,276 lbs and is flying at 6,000 ft altitude and an
airspeed of 145 fps. Find the kinetic energy in ft-lbs.
49276lbs/32.2fps(sq) = 1530 slugs
.5 x 1530 x 145(sq) =
765 x 21025 = 16,084,125 ft-lbs
Question 32.5 pts
An aircraft is in a steady climb, at an airspeed of 213 knots, and the flight
path makes a positive 42 degree angle with the horizontal. Find the Rate of
Climb, in feet per minute.
Rate of climb = airspeed sin(angle)
213 sin(42) = on phone type 42 (press sin) X 213 =142.52 Unit?
60.056847knots to fpm
Question 42.5 pts
An aircraft is in a steady climb, at an airspeed of 216 knots, and the flight
path makes a 24 degree angle with the horizontal. Find the Groundspeed to
two decimal places.
197.33 knots
Question 52.5 pts
A 63,383 lb aircraft has a (L/D)max value of 8.2; find its minimum drag.
7729.63
Question 62.5 pts
An airplane weighs 59,870 lbs and is flying at 9,960 ft altitude and an
airspeed of 588 fps. Find the total energy.
TE=PE+KE
PE=weight x height… 59870 x 9960 = 596,305,200 ft-lbs
KE= ½mV(sq)… ½ (59870/32.2) 588(sq) = 929.658385 x 345,744 =
321423808 ft-lbs
This study source was downloaded by 100000900231380 from CourseHero.com on 07-29-2025 09:19:29 GMT -05:00
https://www.coursehero.com/file/208555906/AVIA305-Quiz-Airspeed-Airfoils-Lift-and-Drag-2022docx/
, Question 72.5 pts
An airplane is operating from an airfield that has a barometric pressure of
29.81 in. Hg and a runway temperature of 20C. Calculate the Density Ratio:
Pressure ratio= 29.81/29.92 = .9963
Temperature ratio= 20C = 527.67 Rankine / standard Rankine (518.67) =
527.67/518.67 = 1.017
Density Ratio= Pressure ratio/Density ratio = .9963/1.017 = 0.9796
Question 82.5 pts
An aircraft is traveling west at an airspeed of 203 knots and is experiencing a
crosswind of 28 knots from the north (90). Find the Groundspeed to two
decimal places.
201
Question 92.5 pts
A 14,666 lb. aircraft has a (L/D)max value of 8.9; find its minimum drag.
1647.865
Question 102.5 pts
An airplane weighs 13,923 lb. The local gravitational acceleration g is 32 fps2.
What is the mass of the airplane in slugs?
13923/32 = 435.09 slugs
Question 112.5 pts
The aerodynamic component that is 90 degrees to the flight path and acts
toward the top of the airplane is called:
Group of answer choices
Thrust
Drag
Lift
Weight
Question 122.5 pts
Several ways of adding energy to the boundary layer include
Group of answer choices
stirring up the boundary layer with small airfoil-shaped vanes (vortex
generators) protruding from the wing.
This study source was downloaded by 100000900231380 from CourseHero.com on 07-29-2025 09:19:29 GMT -05:00
https://www.coursehero.com/file/208555906/AVIA305-Quiz-Airspeed-Airfoils-Lift-and-Drag-2022docx/
Question 12.5 pts
An aircraft weighs 604,723 pounds and has 76% of its weight on the main
(braking) wheels. If the coefficient of friction is 0.3, what is the braking force
on the airplane?
604723 x .76 = 459589.48
459589.48 x .3 = 137876.844 lbs
Question 22.5 pts
An airplane weighs 49,276 lbs and is flying at 6,000 ft altitude and an
airspeed of 145 fps. Find the kinetic energy in ft-lbs.
49276lbs/32.2fps(sq) = 1530 slugs
.5 x 1530 x 145(sq) =
765 x 21025 = 16,084,125 ft-lbs
Question 32.5 pts
An aircraft is in a steady climb, at an airspeed of 213 knots, and the flight
path makes a positive 42 degree angle with the horizontal. Find the Rate of
Climb, in feet per minute.
Rate of climb = airspeed sin(angle)
213 sin(42) = on phone type 42 (press sin) X 213 =142.52 Unit?
60.056847knots to fpm
Question 42.5 pts
An aircraft is in a steady climb, at an airspeed of 216 knots, and the flight
path makes a 24 degree angle with the horizontal. Find the Groundspeed to
two decimal places.
197.33 knots
Question 52.5 pts
A 63,383 lb aircraft has a (L/D)max value of 8.2; find its minimum drag.
7729.63
Question 62.5 pts
An airplane weighs 59,870 lbs and is flying at 9,960 ft altitude and an
airspeed of 588 fps. Find the total energy.
TE=PE+KE
PE=weight x height… 59870 x 9960 = 596,305,200 ft-lbs
KE= ½mV(sq)… ½ (59870/32.2) 588(sq) = 929.658385 x 345,744 =
321423808 ft-lbs
This study source was downloaded by 100000900231380 from CourseHero.com on 07-29-2025 09:19:29 GMT -05:00
https://www.coursehero.com/file/208555906/AVIA305-Quiz-Airspeed-Airfoils-Lift-and-Drag-2022docx/
, Question 72.5 pts
An airplane is operating from an airfield that has a barometric pressure of
29.81 in. Hg and a runway temperature of 20C. Calculate the Density Ratio:
Pressure ratio= 29.81/29.92 = .9963
Temperature ratio= 20C = 527.67 Rankine / standard Rankine (518.67) =
527.67/518.67 = 1.017
Density Ratio= Pressure ratio/Density ratio = .9963/1.017 = 0.9796
Question 82.5 pts
An aircraft is traveling west at an airspeed of 203 knots and is experiencing a
crosswind of 28 knots from the north (90). Find the Groundspeed to two
decimal places.
201
Question 92.5 pts
A 14,666 lb. aircraft has a (L/D)max value of 8.9; find its minimum drag.
1647.865
Question 102.5 pts
An airplane weighs 13,923 lb. The local gravitational acceleration g is 32 fps2.
What is the mass of the airplane in slugs?
13923/32 = 435.09 slugs
Question 112.5 pts
The aerodynamic component that is 90 degrees to the flight path and acts
toward the top of the airplane is called:
Group of answer choices
Thrust
Drag
Lift
Weight
Question 122.5 pts
Several ways of adding energy to the boundary layer include
Group of answer choices
stirring up the boundary layer with small airfoil-shaped vanes (vortex
generators) protruding from the wing.
This study source was downloaded by 100000900231380 from CourseHero.com on 07-29-2025 09:19:29 GMT -05:00
https://www.coursehero.com/file/208555906/AVIA305-Quiz-Airspeed-Airfoils-Lift-and-Drag-2022docx/
