Calamaro Nick Flanagan Rashaud Harvey Danielle Painter Cockpit Assembly Team Customer Needs Instrument the existing throttle lever with position transducers Maintain control mechanisms such as pilot interface handles range of motion and feel ID: 270990
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Slide1
Victor Calamaro, Nick Flanagan, Rashaud Harvey, Danielle Painter
Cockpit Assembly TeamSlide2
Customer NeedsInstrument the existing throttle lever with position transducersMaintain control mechanisms such as pilot interface handles, range of motion and feel Instrument the existing rudder pedals with displacement and force transducersMaintain control mechanisms such as pilot interface pedals, range of motion and feel Instrument the existing yoke with displacement (axial and rotational) and force transducers Maintain control mechanisms such as pilot interface grips, range of motion and feel
Enable feedback from all transducers (force, spring rate and drag) Slide3
Customer Needs (cont.)Install LCD monitor in front of each pilot station (2) Implement an emergency stop function in multiple locations that will allow a given simulation to reset if one operation fails Two wire (signal and return) cable Two emergency stop switches located at each pilot station Two switches made available for ground personnel Clear labeling of switch function
Pull to operate, push to stop Install cabling from all transducers and monitors to the ground Interface connector for easy disconnect/replacement Rout cabling to ventilation tube and wire way conduit Provide a minimum of 10ft cabling beyond conduit exit Install mounting system for side stick inceptor. Design elbow and wrist assembly for pilot comfort Slide4
Engineering SpecificationsRudder sensor must output a position signal from 0 to 5 V Throttle sensor must output a position signal from 0 to 5 V Yoke sensors must output a position and rotation signal from 0 to 5 V All controls provide X lbf feedback Monitors are mounted in cockpit (yes/no measurement)
Emergency stop resets simulation (yes/no measurement)
All cabling is able to reach computer system (yes/no measurement)
Items in italics need to be determined
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OverviewYoke DrawbackYoke RotationThrottleLCD DisplayRudder PedalsSlide6
Pugh Matrix WeightingEase of MaintenanceHow easy is it to get to the sensor if there is problems?Importance - MediumAccuracyHow close does the sensor measure position?Importance - HighEase of Installation
How easy is it to mount the sensor?
Importance - High
Durability
How often will the sensor need to be replaced?
Importance - Medium
Cost
How much does the sensor and associated signal conditioning cost?
Importance - LowSlide7
Yoke Drawback – Sensor TypeLVDTType dependent on mounting locationMost reliable, most expensiveEncoderSimilar in cost, still reliableQuadrature OutputString PotentiometerType dependent on mounting location
Cheap, will wear outSlide8
Yoke Drawback – Mounting LocationConnected to yoke shaft itselfMost direct -> could be most accurateComplex geometry causes problemsAttached to cableSimplestLeast direct -> chance for cables to slip etc -> chance for lower accuracySlide9
Yoke Drawback – Signal ConditioningLVDTRequires an expensive signal conditioning board to output 0 to 5VBoard produced by MoogAnalog board can be madeEncoderRequires a less expensive signal conditioning board to output 0 to 5VString PotentiometerNo conditioning necessarySlide10
Yoke Drawback – Pugh MatrixSlide11
Yoke Rotation – Sensor TypeRVDT/LVDTType dependent on mounting locationMost reliable, most expensiveEncoderLess expensive, still reliableQuadrature OutputRotational/String PotentiometerType dependent on mounting location
Cheap, will wear outSlide12
Yoke Rotation – Mounting LocationOn yoke itselfMost direct -> could be most accurateComplex geometry causes problemsOn Pulley for cablesLess direct -> slightly less accurate then on the yokeEasier to mount then on yokeAttached to cableSimplest
Least direct -> chance for cables to slip
etc
-> chance for lower accuracySlide13
On YokeSlide14
On PulleySlide15
Attached to CablesSlide16
Yoke Rotation – Signal ConditioningRVDT/LVDTRequires an expensive signal conditioning board to output 0 to 5VBoard produced by MoogAnalog board can be madeEncoderRequires a less expensive signal conditioning board to output 0 to 5VRotational/String PotentiometerNo conditioning necessarySlide17
Yoke Rotation – Pugh MatrixSlide18
Throttle- Sensor TechnologyEncoderEasy installationDurableLVDTRequires Signaling BoardAccurateRVDTAccurateEasy installationSlide19
Throttle-Mounting LocationBetween Throttle LeversDurableAccurateEasily accessibleSlide20
Throttle-Mounting LocationSlide21
Throttle-Signaling ConditionRVDT/LVDTRequires an expensive signal conditioning board to output 0 to 5VBoard produced by MoogAnalog board can be madeEncoderRequires a less expensive signal conditioning board to output 0 to 5VSlide22
Throttle-Pugh DiagramSlide23
Rudder Pedal-SensorString/Rotational PotentiometerInexpensive Wears outEncoderDurableReliableLVDT/RVDTRequires Signaling BoardExpensive
AccurateSlide24
Rudder Pedal-Mounting LocationAttached to pedal DirectAccessibleCable ConnectionIndirectSlip possibleSlide25
Rudder PedalsSlide26
Rudder Pedal-Signaling ConditionRVDT/LVDTRequires an expensive signal conditioning board to output 0 to 5VBoard produced by MoogAnalog board can be madeEncoderRequires a less expensive signal conditioning board to output 0 to 5VString/Rotational Potentiometer
No conditioning necessarySlide27
Rudder Pedal - Pugh MatrixSlide28
LCD Display-TechnologyFlat PanelDurableEasy MaintenanceCompactMonitorBulkyEasy InstallationSlide29
LCD Display-MountingBolt on DashEasily accessibleDurableVelcro on DashEasily accessibleCheapGlue on DashEasily accessibleEasy installationSlide30
LCD Display-Mounting LocationSlide31
LCD Display-Pugh DiagramSlide32
Risk ManagementSlide33