Sign Up to our FAA Prep for the Remote Pilot Exam. Ask questions, answer people’s questions, and connect with other UAV/Drone Pilots.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Please briefly explain why you feel this question should be reported.
Please briefly explain why you feel this answer should be reported.
Please briefly explain why you feel this user should be reported.
An air mass moving inland from the coast in winter is likely to result in
fog. If an air mass moves inland in the winter, it is likely a moist air mass, and warmer than the land. In which case, it will be cooled off when it moves inland, resulting in fog.
fog.
See lessIf an air mass moves inland in the winter, it is likely a moist air mass, and warmer than the land. In which case, it will be cooled off when it moves inland, resulting in fog.
The amount of water vapor which air can hold depends on the
air temperature. The amount of water vapor that an air mass can hold is dependent on its temperature. A warmer air mass can hold more water.
air temperature.
See lessThe amount of water vapor that an air mass can hold is dependent on its temperature. A warmer air mass can hold more water.
What is meant by the term "Dew Point"?
The temperature to which air must be cooled to become saturated. The Dew Point is the temperature at which the air becomes fully saturated.
The temperature to which air must be cooled to become saturated.
See lessThe Dew Point is the temperature at which the air becomes fully saturated.
Convective circulation patterns associated with sea breezes are caused by
cool, dense air moving inland from over the water. Sea breeze happens during the day when warm air over land rises and reaches the colder air over water and sinks.
cool, dense air moving inland from over the water.
See lessSea breeze happens during the day when warm air over land rises and reaches the colder air over water and sinks.
What clouds have the greatest turbulence?
Cumulonimbus. Cumulonimbus are always the worst cloud to get near or into
Cumulonimbus.
See lessCumulonimbus are always the worst cloud to get near or into
Every physical process of weather is accompanied by, or is the result of, a
heat exchange. The sun (or heat exchange) is the primary reason for every physical process of weather on the planet.
heat exchange.
See lessThe sun (or heat exchange) is the primary reason for every physical process of weather on the planet.
What are the standard temperature and pressure values for sea level?
15°C and 29.92" Hg. Rote memory item: 15°C and 29.92 in Hg or 59°F and 1013.2 millibars.
15°C and 29.92″ Hg.
See lessRote memory item: 15°C and 29.92 in Hg or 59°F and 1013.2 millibars.
Which combination of atmospheric conditions will reduce aircraft takeoff and climb performance?
High temperature, high relative humidity, and high density altitude. Density altitude increases with an increase in temperature, a decrease in pressure, and/or an increase in humidity.
High temperature, high relative humidity, and high density altitude.
See lessDensity altitude increases with an increase in temperature, a decrease in pressure, and/or an increase in humidity.
What effect, if any, does high humidity have on aircraft performance?
It decreases performance. Humidity will have the same effect as low pressure or high temperature, aka it will increase the density altitude and affect performance negatively.
It decreases performance.
See lessHumidity will have the same effect as low pressure or high temperature, aka it will increase the density altitude and affect performance negatively.
What effect does high density altitude, as compared to low density altitude, have on propeller efficiency and why?
Efficiency is reduced because the propeller exerts less force at high density altitudes than at low density altitudes. Density Altitude is the altitude corrected for non-standard pressure and non-standard temperatures. A high density altitude means your UAS will "feel" like it's operating at a higheRead more
Efficiency is reduced because the propeller exerts less force at high density altitudes than at low density altitudes.
See lessDensity Altitude is the altitude corrected for non-standard pressure and non-standard temperatures. A high density altitude means your UAS will “feel” like it’s operating at a higher altitude, hence the performance will be diminished.