Academic ER End Of Chapter Questions Flashcards
According to the METAR, what is the reported temperature and altimeter settings (in inches of mercury) at KABC?
21 degrees C, 30.06 “Hg
IAW AFI 11-02, vol 3, the weather requirements for an airfield to qualify as an alternate are…
A ceiling of 1000ft, or 500 ft above the lowest compatible minimum, whichever is higher; and a visibility of 2 SM or 1 SM above the lowest compatible minimum, whichever is higher at 1 hour of ETA.
What is true regarding bird advisories and hazards?
AHAS uses BAM data combined with NEXRAD radar to predict bird activity.
How do returns move across the scope in the REL MODE (no turn)?
From top to bottom.
In REL, where should the heading marker always be located?
Firing at 000 degrees
In the INS mode, where should the heading marker fire? What kind of a bearing do you read to a target?
Fires at the aircrafts true heading - true bearing.
A larger building will intercept _________ energy than a smaller building.
More.
The reflective potential of a target increases as the _______ increases.
Density
The greatest amount of energy is reflected when the radar beam is ________ to the reflecting surface.
Perpendicular.
Why does water normally appear as a no-show area on the radarscope?
Because the surface of the water is flat, a very poor reflective angle is formed with the radar beam.
What causes a radar signal to lose energy the farther it travels?
Range attenuation.
Radar antennas are designed to beam more power at ________ ________ to help overcome range attenuation.
Longer ranges.
The amount of beam area an object occupies is called _______ ______.
Beamwidth occupancy
Radar beamwidth increases as range _______.
Increases
If the ground range remains constant as the altitude increases, the slant range ________.
Increases
List the two main differences between mountain shadows and lake returns.
- Mountain shadows change in shape
- The FAR side of a LAKE return is bright; the NEAR side of a MOUNTAIN return is bright.
What term refers to man-made in objects such as buildings, bridges, and dams?
Cultural return
Cities have excellent _________ _________ and form recognizable returns on the scope.
Signal potential
Because no energy can pass through a mountain, there is a _________ area beyond.
No-show
A no-show area on the radarscope has a bright far edge. It is probably a _______.
Lake.
How do airfields and highways appear on radar?
No-show.
Use a _______ gain setting if only stronger, persistent radar signals are desired.
Low
What gain setting would you use for this type of target:
Factories, storage tanks,main field structures
Low gain