SRP Lynx FarScight Aircraft Flight Manual Download | Manualshive

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AFM 4-2

After the firmware has been uploaded, you will be prompted to automatically update parameters to
the new values. This is recommend otherwise you will later note that the automated parameter
check during the preflight is failing.

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Summary of Contents for Lynx FarScight

Page 1: ...AFM 4 2 Lynx FarScight Unmanned Aircraft System Aircraft Flight Manual www SRP aero...

Page 2: ...4 16 September 2014 AFM 2 1 16 January 2015 AFM 2 2 28 February 2015 AFM 2 3 08 March 2015 AFM 2 4 21 April 2015 AFM 2 5 20 August 2015 AFM 2 6 04 December 2015 AFM 2 7 16 December 2015 AFM 2 8 04 Ja...

Page 3: ...Swift GCS 2 Information Displays 3 GCS Units 3 Preflight 4 Mission Planning 4 Moving Base 4 Handheld Transmitter 4 Flight Modes 5 Guided 5 Auto Waypoint Navigation 5 Rally 5 Cruise 5 Manual 6 Changin...

Page 4: ...ap and Sidelap 13 Lead In and Overshoot 14 Statistics 14 Rally Points 14 Section 5 Deep Stall Landing 15 What is a Deep Stall 15 Landing Options 16 Auto Deep Stall 16 Manual Deep Stall 18 Deep Stall A...

Page 5: ...Deepstall Test in Swift GCS 27 Exhausted Camera Battery Inflight 27 Telemetry Connection Problems 27 Warnings 28 Arming Errors 30 Section 10 Scheduled Maintenance 31 Servo Replacement 31 Section 11 R...

Page 6: ...AFM 4 2 Battery Cell Discharge Curve 43 Appendix III 44 Autopilot Carrier Board LED Codes 44...

Page 7: ...stabilator are constructed of Kevlar over a foam core Foam landing pads are fitted beneath the fuselage to absorb energy for deep stall landings The main airframe components are assembled without tool...

Page 8: ...ail remains defleted Lynx is steered during the descent by the autopilot or by the safety pilot if landing manually Unlike a parachute the deep stall can be aborted to resume flying as needed The wing...

Page 9: ...eads Up Display HUD an expandable messages panel top status bar bottom status bar and wind indicator The HUD displays aircraft attitude information similar to manned aircraft The messages panel displa...

Page 10: ...justed Moving Base Swift GCS is capable of reading the GPS position from a GPS equipped laptop or tablet and displaying it on the map This is referred to as moving base and can be quite useful for sit...

Page 11: ...ll change flight modes to Rally automatically In flight the operator can select specific waypoints to fly to within the mission using the Auto menu within the GCS or restart the mission entirely For m...

Page 12: ...ol Safety Pilot Operator Operator Safety Pilot Result Manual Control Autopilot Control Autopilot Control Manual Steering Safety Devices Lynx is fitted with a variety of safety devices to protect crew...

Page 13: ...ilot outputs and control loops If the main autopilot locks up or loses power the IO processor is powered independently and will allow the aircraft to be flow manually Low Voltage Cutoff and Current Li...

Page 14: ...ore than 5 seconds This gives the operator a very small margin approximately 5 minutes to land the aircraft while remaining within safe battery margins GCS failsafe A GCS failsafe will activate if the...

Page 15: ...Range Line of sight LOS Takeoff Takeoff Method Hand launch Auto Takeoff Climb Angle 15 degrees Distance to clear 18 meter obstacle 60 m with 5 m s headwind Distance to clear 50 meter obstacle 150 m wi...

Page 16: ...Prohibited Maneuvers Launch or landing with any tailwind Flight into known icing conditions Flight into visible moisture Flight beyond safety pilot s visual line of sight LOS Flight beyond telemetry...

Page 17: ...rts uploading 15 waypoints Updating the Autopilot Firmware Due to the large number of changes that can happen with an autopilot firmware update it is recommended to wait for a new release to be tested...

Page 18: ...firmware has been uploaded you will be prompted to automatically update parameters to the new values This is recommend otherwise you will later note that the automated parameter check during the prefl...

Page 19: ...ading control the direction of the flight legs Flight legs should be perpendicular to the prevailing wind crosswind This will cause the aircraft to crab in flight but will result in a consistent groun...

Page 20: ...umber of flight legs Distance is linear distance of each flight leg excluding turns Time is the estimated duration to complete the survey Note that the time estimate is based on a zero wind situation...

Page 21: ...escends will vary based on the winds A wind speed of around 9 m s will result in a nearly vertical descent Less wind will shallow the descent higher winds will cause the aircraft to actually travel ba...

Page 22: ...is powered on Auto deep stall must be done to a landing location that is at the same elevation as where the aircraft was armed Lynx will automatically begin the landing sequence at the end of a missio...

Page 23: ...AFM 4 2 17...

Page 24: ...only flight surface that can be moved during a deep stall Deep Stall Abort Both auto and manual deep stall landings may be aborted during the approach or after the aircraft has stalled The most common...

Page 25: ...int within Swift GCS 2 Mission Upload Ensure that the mission with the land waypoint has been uploaded 3 Landing Start From the Land menu select Start landing sequence to begin the auto deep stall app...

Page 26: ...steering with the rudder 8 Aircraft Disarm Once the aircraft is on the ground disarm by pressing the disarm button on the preflight tab in Swift GCS Caution If a loss of link is encountered on the gro...

Page 27: ...ctions on PPK tagging please consult the PPK Appendix The autopilot has a removable micro SD card that stores flight logs The flight log is needed to geo tag photos Start by removing the camera from t...

Page 28: ...log the folder containing the photos from the flight the synchronization photo and where you would like the tags to be saved Once all the required fields have been selected select Tag photos to begin...

Page 29: ...andheld Transmitter Low Battery The transmitter will signal that its battery is low with an on screen warning This is a critical emergency and the aircraft must be landed as soon as possible Avoid thi...

Page 30: ...will become exponentially erroneous over time Do not rely on it to continue the mission or to navigate home 1 Mode Manual safety pilot 2 Land As soon as practical safety pilot GCS Crash Inflight If th...

Page 31: ...ly on the loss of GCS telemetry or handheld transmitter The operator can also adjust the amount of time before the aircraft will change modes To do this when connected to the aircraft on the Settings...

Page 32: ...s checklist step is failing or the aircraft is refuses to arm due to a compass error Before starting a compass calibration make sure that the payload is installed in the aircraft and that the aircraft...

Page 33: ...shut off and how much imagery you may be missing Do this by geo tagging the imagery and viewing the photo locations on the map in Swift GCS To reduce the chances of exhausting the camera battery befor...

Page 34: ...warnings that can occur in flight and on the ground While some warnings are common during the preflight never takeoff with any warning active If a warning persists during the preflight reboot the airc...

Page 35: ...ll be available Land as soon as practical Bad magnetometer health Indicates that one or more of the magnetometers are unhealthy Land immediately Bad barometer health Indicates that one or more of the...

Page 36: ...stent The accelerometers are not providing consistent readings If the autopilot has reached a temperature above 55C click on the GPS icon in the top status bar to see the temperature an accelerometer...

Page 37: ...0 hours of flight time This is a preliminary hour interval until discrepancies between the servo manufacturer s data sheet and claims can be resolved Please contact support srp aero for more informati...

Page 38: ...vice regarding repairs please contact support srp aero List of Common Replacement Hardware Item Hardware Specs Wing Bolt Nylon 1 4 20 x 1 2 hex cap screw Motor Bulkhead Screw Nylon 6 32 x 3 8 Philips...

Page 39: ...be to the top of the rudder 7 Stabilator Arm Connects to the elevator servo and actuates the stabilator 8 Folding Propellers 15x10 Aero Naut CAM folding propellers 9 Repair Tape Gaffers tape 10 Motor...

Page 40: ...r to remove the nut and screw attached to the propeller yoke Place the new propeller blade root into the yoke ensuring that the printed lettering on the propeller is facing forward Insert the screw an...

Page 41: ...t spacer Insert the new wing bolt and turn clockwise Use the wing bolt spacer and socket if difficult to hand turn Tighten down the new wing bolt until it touches the spacer The spacer should leave ro...

Page 42: ...acing the Motor If the motor does not spin freely has a bent shaft or makes a loud whining noise it must be replaced First open the battery bay and remove the battery Disconnect the three ESC wires co...

Page 43: ...t removed grasp the motor and twist the hub off Never attempt to pry the hub off by leveraging a screwdriver between the fuselage and propeller hub Left plastic spinner removed Right Motor removed wit...

Page 44: ...y stripped gears makes a clicking noise or cannot hold its position properly it must be replaced The same procedure is used for either servo Disconnect the control rod using a Philips screwdriver and...

Page 45: ...ped but the Kevlar skin will remain resilient as long as it is not cut Adhere gaffer s tape to the flat side of the skid pad Use the tape to bend the pad such that it matches the curvature of the fuse...

Page 46: ...ing delamination To repair the wing pull back the lifted Kevlar skin and apply a foam safe glue i e polyurethane Gorilla Glue in the USA to the exposed foam Smear the glue with a paper towel or cotton...

Page 47: ...AFM 4 2 The wing is taped and clamped until dry Once dry remove the tape and peel away or sand any remaining glue 41...

Page 48: ...ower is connected to the ESC This notice may be disabled in Castle Link Low Voltage Cutoff Main battery voltage dropped below the cutoff value The default is Auto LiPo which sets the cutoff value base...

Page 49: ...AFM 4 2 Appendix II Battery Cell Discharge Curve 43...

Page 50: ...AFM 4 2 Appendix III Autopilot Carrier Board LED Codes LED Color Status Blue Carrier board power is connected Orange GPS is tracking enough satellites for positioning 44...

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