WeatherDifficulty 3/5
Which combination produces the highest density altitude and the poorest sUAS performance?
- AHigh pressure and low humidity at sea level
- BCold, dry air at high pressure
- CLow temperature, low elevation, high pressure
- DHigh temperature, high elevation, low pressure, high humidity
Show answer and rationale
Correct: D. Density altitude increases with heat, elevation, low pressure and humidity; thinner air reduces rotor lift and motor cooling, shortening endurance and climb capability.
- C — Those conditions lower density altitude.
- A — High pressure lowers density altitude.
- B — Cold dense air improves performance.