Canadian Association of Rocketry (CAR) Level 1 Certification Practice Test

Managing the descent speed of a rocket is crucial for ensuring a safe landing, particularly for rockets equipped with recovery systems like parachutes. One effective method to achieve this is by using larger or multiple parachutes.

Larger parachutes create more drag, which directly slows down the descent speed by providing greater air resistance. The principle behind this is that when a parachute deploys, it captures a significant amount of air, increasing the surface area interacting with the air. The force of drag counteracts the force of gravity acting on the rocket, thereby reducing its descent velocity.

In addition, using multiple parachutes can distribute the weight of the rocket across several parachutes, further increasing the overall drag and allowing for a more controlled and slower descent. This is particularly beneficial for heavier rockets or those carrying sensitive payloads that require a gentler landing.

In contrast, using heavier rockets primarily increases the gravitational force acting on them, which generally results in a faster descent unless countered by a more effective recovery mechanism. Adjusting the launch angle does not significantly influence descent speed either, as it mainly affects the trajectory and altitude of the rocket during ascent rather than its descent characteristics. Increasing the rocket's altitude may result in a longer descent due to gravitational pull, but it