FAA Part 107 Remote Pilot (UAG)Loading and PerformanceEasy
A technician installs a heavy camera gimbal far forward on a fixed-wing sUAS, shifting the center of gravity forward of the approved limit. What is the most likely result?
- AImproved battery efficiency with no other effects
- BIncreased stall speed and reduced climb performance
- CThe aircraft becomes tail-heavy and pitches up uncontrollably
- DDecreased stall speed and easier stall recovery
Show answer & explanationAnswer & explanation
Correct answer: B. Increased stall speed and reduced climb performance
A forward CG creates a nose-down tendency that must be countered with more up-elevator or lift, increasing induced drag, stall speed, and reducing climb performance.
Why the other options are wrong
- A. Efficiency worsens due to extra trim drag, not improves.
- C. A forward CG makes the aircraft nose-heavy, not tail-heavy.
- D. A forward CG makes recovery harder, not easier, and raises stall speed.
Forward CG Effects
A center of gravity forward of the approved limit makes the aircraft nose-heavy, increasing stall speed and reducing climb performance.
- Requires more up-elevator/lift to trim
- Increases drag and stall speed
- Reduces available climb performance
Memory trick: Nose-heavy plane needs a nose-up shove, which costs speed.