Question

An airplane weighing 15,000 pounds is cruising at an altitude where the pressure is 1750 lb/ft2 and the outside ambient temperature is 30° Given that the parasite drag coefficient (Cop) is 0.025 and total aircraft surface area is 500 ft?, calculate how much Parasite Drag (lbs.) is produced at 400 knots (multiply by 1.69 to convert to ft/sec). a 5,943.54 lbs b 4.500.54 lbs c 3,943.54 lbs d 2,500.54 lbs

Answer 1

The Parasite Drag produced at 400 knots is approximately 5,943.54 lbs.

Step-by-step explanation:

To calculate the Parasite Drag (lbs.) produced at 400 knots, we can use the formula: Drag = Cop * (Outside Pressure) * (Velocity^2) * (Surface Area), where Cop is the parasite drag coefficient, Outside Pressure is the pressure at the cruising altitude, Velocity is the speed of the airplane, and Surface Area is the total aircraft surface area.

Given that Cop = 0.025, Outside Pressure = 1750 lb/ft2, Velocity = 400 knots (which is equivalent to 400 * 1.69 ft/sec), and Surface Area = 500 ft2, we can substitute these values into the formula to calculate the Parasite Drag.

So, Drag = 0.025 * 1750 lb/ft2 * (400 * 1.69 ft/sec)^2 * 500 ft2.

Calculating the value gives us the Parasite Drag produced at 400 knots is approximately 5,943.54 lbs.