2. I am planning to perform some model rocketry experiments. The payload is to be protected by a parachute as it returns to the ground. The predicted parachute drag force D can be obtained by the following equation: D = 0.5 pV²A CD Where D is the drag force in lbs., p is the density of air, V is the velocity of the falling rocket, A is the projected area of the parachute, C is the dimensionless coefficient of drag for the chute. My research has led me to find the following values: The density of air p is stated to be 0.074887 lbm/ft³ ± 20% of the value The target falling speed is 30 ft/s ±2 ft/s The parachute is round, so the projected area is circular with a diameter of 25" + 1" The chute drag co-efficient is 0.9 ± 0.1 What is your projected drag force exerted by the chute with these parameters? What is your predicted uncertainty in this force value?

2. I am planning to perform some model rocketry experiments. The payload is to be protected by a parachute as it returns to the ground. The predicted parachute drag force D can be obtained by the following equation: D = 0.5 pV²A CD Where D is the drag force in lbs., p is the density of air, V is the velocity of the falling rocket, A is the projected area of the parachute, C is the dimensionless coefficient of drag for the chute. My research has led me to find the following values: The density of air p is stated to be 0.074887 lbm/ft³ ± 20% of the value The target falling speed is 30 ft/s ±2 ft/s The parachute is round, so the projected area is circular with a diameter of 25" + 1" The chute drag co-efficient is 0.9 ± 0.1 What is your projected drag force exerted by the chute with these parameters? What is your predicted uncertainty in this force value?

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Question

2. I am planning to perform some model rocketry experiments. The payload is to be protected
by a parachute as it returns to the ground. The predicted parachute drag force D can be
obtained by the following equation:
D = 0.5 pV²A CD
Where D is the drag force in lbs., p is the density of air, V is the velocity of the falling
rocket, A is the projected area of the parachute, Cp is the dimensionless coefficient of
drag for the chute.
My research has led me to find the following values:
The density of air p is stated to be 0.074887 lbm/ft³ + 20% of the value
The target falling speed is 30 ft/s + 2 ft/s
The parachute is round, so the projected area is circular with a diameter of 25" + 1"
The chute drag co-efficient is 0.9 ± 0.1
What is your projected drag force exerted by the chute with these parameters? What is
your predicted uncertainty in this force value?

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