Question

When is the clamp of a rocket removed?

• A. Before initiating the ignition
• B. After the launch
• C. Clamp breaks automatically during the launch
• D. When upthrust is more than the weight.

Answer 1

The correct option is D When upthrust is more than the weight.

Clamp is used to hold the rocket in its position before launch. Following steps are taken during the launch:

1. Fuel is ignited.
2. When the upthrust due to the fuel combustion becomes more than the weight of the rocket, clamp is released.
3. As the upthrust is higher than than the weight and the clamp is released, rocket starts its ascent.