Energy State: In addition to the planned operation, you should have a reserve of energy. What is the term used?

• A. Reserve
• B. Buffer
• C. Contingency
• D. Margin

Answer: (A)

When planning a drone flight, you set aside extra power beyond what the mission is expected to use so you can handle surprises and still complete the return safely. That extra energy is called reserve energy. It acts as a safety cushion for things like unexpected headwinds, longer than expected travel, or minor system delays.

A buffer is similar in spirit, but in this context the standard term used for the amount of energy kept aside is reserve. Contingency refers to a broader plan for dealing with unforeseen situations, not specifically the energy set aside. Margin describes a safety cushion as well, but the explicit energy term used in flight planning is reserve.