Question

A 8.0-m-diameter parachute of a new design is to be used to transport a load from flight altitude to the ground with an average vertical speed of 3 m/s. The total weight of the load and parachute is 200 N. Determine the approximate drag coefficient for the parachute.

Answer 1

Answer:

drag coefficient for the parachute is Cd = 1.84177

Explanation:

given data

diameter = 8.0 m

average vertical speed = 3 m/s

total weight of load = 200 N

to find out

drag coefficient for the parachute

solution

we will apply here drag coefficient formula that is express as here  

drag coefficient Cd = $\frac{2w}{\rho v^2A}$    ......................1

here w is total load and A is area and v is speed

and here ρ = 1.22 kg/cu

put here value we get  

Cd = $\frac{2*4*200}{1.229*5^2*\pi * 3^2}$  

Cd = 1.84177

drag coefficient for the parachute is Cd = 1.84177