1What are the two main factors that affect drone/fixed wing perfrormance?
Pressure
Temperature
2The average temperature decreases at a rate of _____ as you increase altitude?
2ºC every 1,000ft
3What causes air movement?
The uneven heating of the earths surface
4What provides the majority of earths heat?
The sun
5Does warm air rise or sink?
Rise
6Does cold air rise or sink?
Sink
7What air is more dense?
Cold air
8What air is less dense?
Warm air
9What is (atm)?
The standard atmosphere pressure
Known as 1 atm
10What does 1 atm equal in PSI?
14.7 psi
11What does 1 atm equal in in Hg (inches of mercury)?
29.92 in Mg
12Every 1,000ft, pressure drops how much in mercury?
1 in Hg every 1,000ft
13What is a standard day when referring to weather?
Sea Level
15ºC (59ºF)
29.92" Hg
14When pressure changes outsdie (to anything other than 29.92" Hg) we refer to the percived altidue as what?
Pressure-altitude
15What is Density Altitude?
Pressure-altitude corrected for non-standard temperatures
16What does high pressure mean?
High pressure density BUT low density altitude
17In poor pressure, high temp, high humidity, how does it effect a fixed wing?
Take off distance and landing distance will be longer
Rate of climb - quadcopter affected too
Ceiling (how high you can fly) - quadcopter affected too
Payload affected
Range/Fuel economy
Speed
Maneuverability/stability
18Every physical process of weather is accompanied by, or is the result of?
Heat exchange
19Which factor would tend to increase the density altitude at a given airport?
An increase in barometric pressure
20How would high density altitude affect the performance of a small unmanned aircraft?
Decreased performance
21Which factor would tend to increase the density altitude at a given airport?
An increase in ambient pressure