What is the maximum mass a rocket with an I211 motor can safely lift based on the minimum average thrust to weight ratio of 4:1?

What is the maximum mass a rocket with an I211 motor can safely lift based on the minimum average thrust to weight ratio of 4:1?

• A. 2.67 kg
• B. 4.87 kg
• C. 5.38 kg
• D. 7.12 kg

Answer: (C)

To determine the maximum mass a rocket with an I211 motor can safely lift while meeting the minimum average thrust-to-weight ratio of 4:1, you first need to understand how thrust and weight relate to the rocket's ability to ascend. The I211 motor has a specific thrust rating that you can find in its specifications. For the average thrust of the I211, you'll typically look for a value close to 12.5 N (Newtons) during its burn. Using the established thrust-to-weight ratio of 4:1, the calculation for maximum safe weight takes into account that the thrust must support four times the weight. Using the thrust value: 1. Calculate the maximum weight the motor can lift: Maximum Weight = Thrust / Thrust-to-Weight Ratio Maximum Weight = 12.5 N / 4 = 3.125 kg However, since weight is expressed in Newtons (where 1 kg = 9.81 N), you need to convert mass to weight for a more accurate assessment. In this context, you convert the maximum weight back to mass by dividing by the acceleration due to gravity. 2. Calculate: Maximum Liftable Mass = 3.125 kg *

To determine the maximum mass a rocket with an I211 motor can safely lift while meeting the minimum average thrust-to-weight ratio of 4:1, you first need to understand how thrust and weight relate to the rocket's ability to ascend.

The I211 motor has a specific thrust rating that you can find in its specifications. For the average thrust of the I211, you'll typically look for a value close to 12.5 N (Newtons) during its burn. Using the established thrust-to-weight ratio of 4:1, the calculation for maximum safe weight takes into account that the thrust must support four times the weight.

Using the thrust value:

1. Calculate the maximum weight the motor can lift:

Maximum Weight = Thrust / Thrust-to-Weight Ratio

Maximum Weight = 12.5 N / 4 = 3.125 kg

However, since weight is expressed in Newtons (where 1 kg = 9.81 N), you need to convert mass to weight for a more accurate assessment. In this context, you convert the maximum weight back to mass by dividing by the acceleration due to gravity.

2. Calculate:

Maximum Liftable Mass = 3.125 kg *