##VAW-120## Sensors Exam Review

VCS Timeouts and Temps"<div> </div><div><table><tbody><tr><td> </td><td><div>Time Outs                     </div></td><td><div>Temperature</div></td></tr><tr><td><div>Auto Preheat/Cool Mode     </div></td><td><div>6:34</div></td><td> </td></tr><tr><td><div>Direct Cool Mode</div></td><td><div>2:04</div></td><td><div>48 – 69°F</div></td></tr><tr><td><div>Direct Heat Mode</div></td><td><div>10:00/30:00</div></td><td><div>65 – 90°F</div></td></tr><tr><td><div>VCS Normal Pressure</div></td><td><div>13-20 inches H20</div></td><td> </td></tr></tbody></table></div>" <div>What are EMIRS extension/retraction?</div><ul><li>[...] </ul>"<div>What are EMIRS extension/retraction?</div><ul><li>150-180 KCAS</li><li><div>15,000-30,400ft</div></li><li><div>+/- 5 AOB</div></li><li><div>Unaccelerated flight</div></li><li><div>No flat turns</div></li><li><div>limited to 3 cycles in 15 min period</div></li><li><div>No use in moderate/severe turbulence</div></li><li><div>Maximum safe extension for emergency landing is 1.5ft</div></li><li><div>No use in icing conditions</div></li> </ul> " CPI(Coherent Pulse Interval) A group of radar pulses at the same PRF DWELLA group of CPIs that the DDP correlates together  - Period of time in which the main beam is pointed down a specific azimuth with a frame or scan area PRF(Pulse Repetition Frequency) Number of pulses per unit of time  - Measured in Hz PRI(Pulse Repetition Interval) Time from beginning of one pulse to beginning of next pulse  - AKA Interpulse Period ScanTime to complete an entire sweep of a specific volume Scan RateRate at which a scan is complete in degrees/second  - speed survaillance beam scanned thru surveillance volume TARATowed Auxiliary Reciever Array STAPSpace Time Adaptive Processing <ul><li>Rejects External Noise, ground clutter, and noise jamming</li><li>Compensation for flight induced ground clutter across the doppler spectrum</li></ul> AAS Scan Rates/IntervalsMechanical  - 10, 12, 15 seconds ESS Scan Rates/IntervalsMechanical  - 10, 12, 15 seconds Full Frequency Range/Band406 - 450 MHz  - 41 Channels in 1 MHz increments Middle Frequency Range/Band425 - 435 MHz E-2D Radar operates in what band406 - 450 MHz  - B-Band What does the B-Band provide?Good Target Resolution Low atmospheric attenuation rate Good, long range detection Components of ARS(Adaptive Detection System Radar Segment) <ul><li>Transmitter</li><li>ADS-18 Antenna</li><li>Receiver Subsystem</li><li>Processor Subsystem</li></ul> Components of CRS(Common Radar Segment) <ul><li>Radar Controller (RC)</li><li>Exciter</li><li>Detection Data Processor (DDP)</li></ul> Types of Radar and TARA boots<ul><li>Parallel Boot - EMIRs ON within 3 sec. of turning RADAR ON</li><li>Series Boot - RADAR to ON, 360 sec. or ~ 6 min, then EMIRs to ON, wait 270 sec.</li></ul> RADAR - OFF"RSCP powered with 28VDC" RADAR - ON"Low-current power applied to power up RADAR subsystems" RADAR - STBYlow current power applied to: <ul><li>radar subsystem</li></ul>High voltage power applied to: <ul><li>transmitter - transmit inhibited</li></ul> RADAR - OPERlow current power applied to: <ul><li>radar subsystem</li></ul>High voltage power applied to: <ul><li>transmitter - functions under control of RC</li></ul> EMIRS - ONPower applied to: <ul><li>TARA processor</li><li>Receiver B subsystem</li><li>TARA antenna</li><li>PTS</li></ul> Radar/EMIRS TimeoutsRadar <ul><li>ON: 360 sec.</li><li>STBY: 20-27 sec.</li></ul><div>EMIRS - 270 sec.</div> What creates test targets?Exciter (A5) RSCP ColorsGreen: Current State except ALTN Yellow: Current State for ALTN Blue: Can be selected Dark: Cannont be selected Red: Status/Interlock Failure RSCP Interlocks"Very Fat Guys Can't Get With Really/Hot Ladies <ul><li>VCS</li><li>Fuel Dump</li><li>GCU</li><li>Cabin Pressure</li><li>Gear Up</li><li>WOW</li><li>RPCS/HI FLO</li><li>LCS</li></ul>" VCS Interlock"Vapor Cycle Cooling within limits  - VCS failure reverts to OFF" Fuel Dump Interlock"Indicates when fuels being dumped  - Reverts to STBY" GCU InterlockGenerator Control Unit within limits/both generator online  - GCU failure reverts to STBY  Cabin Pressure Interlock"Cabin pressure is in excess of 8k  - Reverts to STBY" Gear Up InterlockGear Up and Locked WOW InterlockThere is no weight on wheels RPCS/HI FLO"Atleast one engine is online and associated bleed air valve is open Normal manifold pressure = LO FLO Green HI FLO  = HI FLO available  - Reverts to STBY" LCS Interlock"Liquid cooling system within limits  - Reverts to ON" AHE HardwareCRS ARS TRS Known COMMS Fails<ul><li>MC to RADAR - RC detects a loss of comms with MC</li><li>RADAR to MC - DDP detects a loss of comms with MC</li><li>MC Comms Fail - both RC and DDP detect a loss of comms with MC</li><li>DDP Comms Fail - RC detects a DDP status failure</li></ul> Define - AASAdvanced AEW Surveillance Mode <ul><li>360 deg. coverage</li><li>10sec/6rpm - 12sec/5rpm - 15sec/4rpm</li><li>DWELL time limited by mechanical rotation rate</li></ul> Define - ESSEnhanced Surveillance Sector Mode <ul><li>3 frames - 1 primary sector, 2 secondary sectors</li><li>Longer DWELLS w/ enhanced radar focus, increasing detection in primary sector</li><li>Secondary sector reduced detection</li><li>Center ESS on geo-point, zone, track</li></ul> Where all radar video comes from: <ul><li>Cancelled Mag - [...]</li><li>Uncancelled Mag - [...]</li><li>PSV - [...]</li><li>RTSV - [...]</li><li>EMI Mag - [...]</li></ul>Where all radar video comes from: <ul><li>Cancelled Mag - SP</li><li>Uncancelled Mag - SP</li><li>PSV - DDP</li><li>RTSV - DDP</li><li>EMI Mag - ACM</li></ul> Best Video for DetectionPSV E2-D weapon system is designed for what type of turns?Flat Turns - (0.6 deg/sec) Flat Turns - Pros/ConsPro - Maintain Radar Picture Con - Takes a long time and a lot of room Next best option to flat turnsWrap-It-Up Turns Turn that is quickly performed no matter the degredation to radar systemWrap-It-Up Turns Wrap-It-Up turns should not exceed [...] when TARA deployedWrap-It-Up turns should not exceed 30 degree AOB when TARA deployed Wrap-It-Up Turn - Pro/ConPro - Can be accomplished quickly and in a small area Con - Lose Radar picture and TARA Radar HI FLO needs what OAT< 90 degrees OAT LCS Temps <ul><li>Med or High: [...]</li><li>Low: [...]</li><li>ON, STBY, ON DECK: [...]</li></ul>LCS Temps <ul><li>Med or High: < 87 F</li><li>Low: < 105 F</li><li>ON, STBY, ON DECK: < 120 F</li></ul> EMIRS - Fully Deployed <ul><li>[...]</li></ul>"EMIRS - Fully Deployed <ul><li>140-220 KCAS or 300 KTAS, which ever lower</li><li>15k to 30,400 ft</li><li>30 deg. AOB</li><li>No greater than 20 deg. AOB/sec</li><li>0.5 - 1.5 G's</li><li>Flat Turns allowed</li><li>No hail</li></ul> " Cooling Sources: LCS: <ul><li>[...] </ul>VC: <ul><li>[...] </ul>RPCS <ul><li>[...] </ul>TARA <ul><li>[...]</li></ul>Cooling Sources: LCS: <ul><li></li><li>Aux Rack A1</li><li>PAM A2/A3</li> </ul>VC: <ul><li></li><li>PAM A2/A3</li><li>Reciever A4</li><li>Exciter A5</li><li>Processor Rack A6</li> </ul>RPCS <ul><li></li><li>Rotary Coupler Assembly</li><li>HP RF Transmission Lines</li> </ul>TARA <ul><li>Ambient Air</li></ul> RCPS HI FLO requirements<ul><li>OAT < 90 F</li><li>No WOW</li><li>RADAR in STBY or OPER</li></ul> Time switching between RADAR modes <ul><li>AAS/ESS to ETS = [...]</li><li>ETS to AAS/ETS = [...]</li></ul>Time switching between RADAR modes <ul><li>AAS/ESS to ETS = 15-20 seconds</li><li>ETS to AAS/ETS = 5-10 seconds</li></ul> IFF Interrogator frequencies <ul><li>Transmit - [...]</li><li>Rvc - [...]</li></ul>IFF Interrogator frequencies <ul><li>Transmit - 1030 MHz</li><li>Rvc - 1090 MHz</li></ul> Military vs. Civilian Modes <ul><li>Military - [...]</li><li>Civilian - [...]</li></ul>Military vs. Civilian Modes <ul><li>Military - Modes 1, 2, 4, 5</li><li>Civilian - Modes 3/C and S</li></ul> Safety of Flight concern for putting A/C into closed loopATC cannot see us when we are in closed loop Ways to put system into a closed loopClosed Loop Test Ring Test Ways to Zeroize mode 5Button on IIP enclosure Mode IV control panel in CIC Zeroize toggle on COMM/IFF panel in cockpit IFF modes that give altitudeC 5 S INCDS provides [...] information to [...] from the [...] through the master [...] and [...]INCDS provides altitude information to IFF from the ADCs through the master AFMC and 1553B Nav Bus

##VAW-120## Sensors Exam Review

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##VAW-120## Sensors Exam Review

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