Download - APN-59 1 of 10
RADARSearch and Weather Radar (AN/APN-59)>
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Objective
After this lesson, the students will be able to understand
Introduction of search Radar
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RADARSearch and Weather Radar (AN/APN-59)>
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Foreign Object Damage
Search and weather Radar (APN-59) >FOD 1 of 10
Where does it come from?
Improper Aircraft
Maintenance
Airfield Construction
Poor Housekeeping
Vehicles / Equipment
RADAR
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RADARSearch and Weather Radar (AN/APN-59)>
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RADAR
Safety
Before & after rectification must inspect the sys for any FOD witch leads towards short circuiting or damage to the equipments
Search and weather Radar (APN-59) >Safety 1 of 10
RADARSearch and Weather Radar (AN/APN-59)>
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CAUTION
Ensure that the DC power supply output does not exceed 27 VDC at any time as to ensure that the displays are not damaged
Search and weather Radar (APN-59) >Safety 1 of 10RADAR
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RADARSearch and Weather Radar (AN/APN-59)>
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Discrepancy
RARAR tilt is U/S & tilt OUT by + 10
degrees. range knob is U/S
Cause
T/Shooting c/out found antenna and C-1242 faulty
Remedial Action
Antenna and C-1242 replaced with S/A and IP-239 indicator range knob
adjusted. Ops checked found Sat.
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Search & Weather Radar Sys (APN-59) > Defect 1 of 10
WXR RADRA CONT PNL
RADAR
RADARSearch and Weather Radar (AN/APN-59)>
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Purpose To warn against weather
disturbances
To map terrain
To aid in navigation
Applicability
Installed on C-130 B&E A/C
TO Ref
1C-130B02-8
Introduction
RADARSearch and Weather Radar (AN/APN-59)>
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RADAR stands for RA Radio D
Detection A And R
Ranging
Primary radar
Range
By the reflection time
Bearing
Moving the antenna
Targets
Displayed on indicators
Introduction
RADARSearch and Weather Radar (AN/APN-59)>
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Radar Fundamentals
Radar sees anything that reflects its signal
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Introduction
RADARSearch and Weather Radar (AN/APN-59)>
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Wet HailRainWet SnowDry HailIce CrystalsDry Snow
Reflective Levels of Precipitation
Radar Fundamentals
Least Reflective
Most Reflective
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Introduction
RADARSearch and Weather Radar (AN/APN-59)>
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Lower 2/3 of a thunderstorm is the most reflective
Radar Fundamentals
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Introduction
RADARSearch and Weather Radar (AN/APN-59)>
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At high altitudes it’s very easy to overshoot the most reflective part of the storm
Radar Fundamentals
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Introduction
RADARSearch and Weather Radar (AN/APN-59)>
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How A Raindrop Reflects
Radar Fundamentals
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Introduction
RADARSearch and Weather Radar (AN/APN-59)>
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Areas of heavy rainfall may hide other storms
Radar Fundamentals
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Introduction
RADARSearch and Weather Radar (AN/APN-59)>
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Power requirement 115VAC 400 Hz
C/B 5Amp ESS AC BUS
115VAC 380 to 1000 Hz C/B 15Amp ESS AC BUS
28VDC C/B 10Amp ESS DC BUS
Location Radio C/B panel
Introduction
RADARSearch and Weather Radar (AN/APN-59)>
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CAUTION
Ensure that the DC power supply output does not exceed 27 VDC at any time as to ensure that the displays are not damaged
Search and weather Radar (APN-59) >Safety 1 of 10RADAR
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RADARSearch and Weather Radar (AN/APN-59)>
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SUMMARY Introduction of search and Weather Radar
Input power requirement
Search and weather Radar (APN-59) > 1 of 10RADAR
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RADARSearch and Weather Radar (AN/APN-59)>
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Q. RADAR stands for
a Radio Distance And Rangingb Radio Distance And Radiationc Radio Detection And Rangingd Radio Detection And Radiation
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Q & A
RADARSearch and Weather Radar (AN/APN-59)>
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Q. How many types of RADAR
a Oneb Twoc Threed Four
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Q & A
RADARSearch and Weather Radar (AN/APN-59)>
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Q. How bearing is achieved by primary radar ?
a By the time difference between transmitted frequency and received frequency b By frequency difference between transmitted
frequency and received frequency c By moving antenna d bearing is not calculated
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Q & A
RADARSearch and Weather Radar (AN/APN-59)>
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Q. I/P power of AN/APN-59
a 115VAC 400 Hzb 28 VDCc 115VAC 380 to 1000 Hzd 115VAC 400 Hz, 115VAC 380 to 1000 Hz, and 28 VDC
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Q & A
RADARSearch and Weather Radar (AN/APN-59)>
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Q. Maximum reflectivity area of weather is
a Lower 2/3 of a thunderstorm b Upper 2/3 of a thunderstorm c Lower 1/3 of a thunderstorm d Upper 2/3 of a thunderstorm
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Q & A