Weather 1 Flashcards
What effect, if any, does high humidity have on aircraft performance?
1 It decreases performance.
2 It increases performance.
3 It has no effect on performance.
It decreases performance.
Which of the following considerations is more relevant to a Remote PIC when evaluating unmanned aircraft performance?
1 Current weather conditions.
2 The type of the sUAS operation.
3 The number of available ground crew.
Current weather conditions.
Every physical process of weather is accompanied by, or is the result of, a
1 movement of air.
2 pressure differential.
3 heat exchange.
heat exchange.
Which combination of atmospheric conditions will reduce aircraft takeoff and climb performance?
1 Low temperature, low relative humidity, and low density altitude.
2 High temperature, high relative humidity, and high density altitude.
3 High temperature, low relative humidity, and low density altitude.
High temperature, high relative humidity, and high density altitude.
How would high density altitude affect the performance of a small unmanned aircraft?
1 Increased performance.
2 Decreased performance.
3 No change in performance.
Decreased performance.
What are the standard temperature and pressure values for sea level?
1 59°F and 29.92 millibars.
2 59°C and 1013.2 millibars.
3 15°C and 29.92” Hg.
15°C and 29.92” Hg.
What effect does high density altitude, as compared to low density altitude, have on propeller efficiency and why?
1 Efficiency is reduced due to the increased force of the propeller in the thinner air.
2 Efficiency is increased due to less friction on the propeller blades.
3 Efficiency is reduced because the propeller exerts less force at high density altitudes than at low density altitudes.
Efficiency is reduced because the propeller exerts less force at high density altitudes than at low density altitudes.
What effect does high density altitude have on the efficiency of a UA propeller?
1 Propeller efficiency is increased.
2 Density altitude does not affect propeller efficiency.
3 Propeller efficiency is decreased.
Propeller efficiency is decreased.
Which factor would tend to increase the density altitude at a given airport?
1 A decrease in relative humidity.
2 An increase in ambient temperature.
3 An increase in barometric pressure.
An increase in ambient temperature.
