WEATHER RADAR (COLLINS WXR-2100) Flashcards
Which part of a Thunderstorm is the most reflective part?
The lower part below the freezing level, above it ice crystals starts to form which are less reflective
How far out, in NM can the Collins WXR-2100 scan?
320 NM
320 NM ahead of an aircraft, how much of an altitude drop (in ft) does the earths curvature cause?
65000 ft
How often is the WX Radar image updated on the Collins WXR-2100?
Every 4 seconds
How does the MCS (Multi Scan System) work on the Collins WXR-2100?
Upper beam detects intermediate weather
Lower beam detects short range and long range weather due to curvature of the earth
What is GCS on the Collins WXR-2100?
Ground Clutter Supression
Can the pilots have different gain and tilt settings on their respective ND:s?
No, its single function
How is the tilt value displayed on the WX radar calculated?
It is the average of the upper and lower beam
Split is higher at lower levels and split decreases as altitude increases
Is tilt operation available during multi scan operation?
No, it is the average of the lower and upper beam
Tilt is only available in MAN mode
Up to what distance can turbulence be detected on the WX radar?
40 nm
What is needed for the turbulence function on the WX radar to show areas of turbulence?
At least some precipitation with velocity changes.
It cannot detect clear air turbulence
Is turbulence displayed in MAP mode on the WX radar?
No
What is the reason you would decrease gain to min on a WX radar?
If you decrease it to min and a cell is still red it means that it most likely is severe
Do you need to change the gain when climbing into colder air?
No, gain is temperature adjusted
What is the PAC alert function on the WX radar?
“Path Attenuation Compensation”
PAC displays a yellow arc on the outermost scale to warn the pilots of the attenuated condition
PAC shows displays up to 80 nm ahead if the aircraft
Is only available in CAL mode