How will rate of climb be affected by being overweight?

How will rate of climb be affected by being overweight?

• A. Higher
• B. Lower
• C. Unchanged
• D. Increased

Answer: (B)

The key idea is that climb rate depends on how much extra power you have after just supporting the weight. When you add weight, gravity pulls harder, and the motors must supply more thrust to not only hold level flight but also to gain altitude. Since the motors and battery have a limited amount of power, the extra power needed to lift is taken away from what could be used to climb. So the available excess power decreases, and the rate at which you can rise (rate of climb) goes down. In practical terms, a heavier drone climbs more slowly and may even fail to climb as steeply if the weight pushes you to the edge of what the motors can handle. The other options would imply that climb rate increases or stays the same, which isn’t supported because weight raises the required power and reduces the excess for climbing.

The key idea is that climb rate depends on how much extra power you have after just supporting the weight. When you add weight, gravity pulls harder, and the motors must supply more thrust to not only hold level flight but also to gain altitude. Since the motors and battery have a limited amount of power, the extra power needed to lift is taken away from what could be used to climb. So the available excess power decreases, and the rate at which you can rise (rate of climb) goes down. In practical terms, a heavier drone climbs more slowly and may even fail to climb as steeply if the weight pushes you to the edge of what the motors can handle. The other options would imply that climb rate increases or stays the same, which isn’t supported because weight raises the required power and reduces the excess for climbing.