Align TREX 450 build update 5. Maiden #1.

Small update here. I attempt a flight, but it crashed immediately from what I think is due to bad PID settings. There is minor damage to the GPS.

AUW with 2500mAh 3S battery is 998g. Without battery is 810g.

P1010165 (Medium)

blue loctited all bolts

P1010170 (Medium)

balanced props

P1010177 (Medium)

new carbon fiber legs, making room for a gimbal maybe

P1010184 (Medium)

blade struck the GPS when the blade folded

P1010175 (Medium) P1010178 (Medium) P1010179 (Medium) P1010180 (Medium) P1010181 (Medium) P1010183 (Medium)

 

Outstanding TO-DO list

-PIDS
-evaluate RF noise for RF interference abatement, LCfilter/torroid placement, planning on using none due to shielding,
-maiden 2, take off 5′ then land
-maiden 3, repeat 2
-maiden 4, fly a *short* distance, return and land
-maiden 5, repeat 4
-maiden 6, test APM auto modes
-maiden 7, repeat 6
-flight check then normal flight

DONE: visually check all parts prior to assembly, and circuit boards with loupe for poor solder joints
DONE: assemble frame, bolts finger tight
DONE: mod: dual thrust torque boom bearings to reduce tail boom vibration. Add tail motor if necessary.
DONE: mount Gopro, used Moolgel and Tarot “card” system…though modified.
DONE: make skids, for frame level and camera mount. *no pic yet*
DONE: kapton tape all circuit boards, for water and dust. Then wrap in aluminum foil tied to ground, then wrap in kapton again
DONE:-solder new  wiring plug on 1258Mhz video transmitter, I hate DF13 connectors! They are too fragile. Replacing with two JST connectors
DONE:-mount 1258Mhz video transmitter, but still need a zip tie to double secure.
DONE:-mount FPV camera
DONE:-mount “minimosd extra” HUD video overlay (already programmed, procedure here), but still need a zip tie to double secure.
DONE:-foam up Microphone for wind, place inside frame
DONE:-mount 900Mhz telemetry, but still need a zip tie to double secure.
DONE:-mount magnetometer
DONE:-add band-aid over barometer
DONE:-wire and mount 5V power supply (BEC)
DONE:-program BEC (battery eliminator circuit): Castle 10A
DONE:-program ESC, set RPM governor
DONE:-mount 433Mhz receiver
DONE:-make 433Mhz dipole antenna, or turnstyle type
CANCELLED-make 900Mhz antenna
DONE:-mount servos
DONE:-double check all electrical
DONE:-full power up, test all electrical
DONE:-set servos 90 degrees and tie in linkages
DONE:-mount servos
DONE:-double check all electrical
DONE:-full power up, test all electrical.
DONE:-set servos 90 degrees and tie in linkages
DONE:-balance props, remove weight if all possible. Tape is last resort.
DONE:-remove and Blue-loctite all bolts, careful to keep off loctite off plastics and locknuts
DONE:-set up RC transmitter for *airplane*, APM likes non-mixed inputs
DONE:-program APM (arduino/gyro/flight controller/arducopter)
DONE:-lightly lube all gears
DONE:-double check all mechanical parts
DONE:-spin up motor while copter is anchored, evaluate APM vibration log
DONE:-test RC inputs work with mechanics
DONE:-log all up weight (auw)
DONE:-check final center of gravity (CG)
DONE:-take pictures, this is the best it will ever look
DONE:-check ground station FPV gear and Mission Planner
DONE:-maiden 1, spin up, frame tied to ground. Test control surfaces

 

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