What happen when tilt-quadplanes with all four motors tilting

[aziz_kountche]

hello , what happen when i chose quadplane with all four motors tilting ?
in fixed wing mode did the 4 motors run to push airplane forword ? or just the 2 front motors ?

[GregCovey]

Hi Aziz,

I found a post from Tridge from last May 2018 which should answer your question.

Cheers!

@tridge

Some key things about this sort of aircraft:

• we don’t currently support doing vectored yaw with this type of aircraft. So yaw when hovering is done in the same way it is done with a normal quadplane. You should leave Q_TILT_TYPE=0
• the way its setup at the moment you should have a single logical tilt servo. You may of course have 2 or 4 servos in the aircraft, and they can be on separate output channels if you like (so you can trim them separately), but they will all be treated as a single logical tilt servo. You should set SERVOn_FUNCTION=41 (for motortilt) on all of the servos
• we currently assume that any motor that tilts should also be run in forward flight. We don’t support running only a subset of the tilted motors in fwd flight (that has been requested by a couple of people)
• when doing your first test flight I’d recommend using QHOVER and FBWA only, and setting Q_TILT_RATE_DN and Q_TILT_RATE_UP quite low (say 20 to 30 degrees/second)
• make sure you do your test transitions at a good height - say 40 meters or more, so you have time to recover

These types of aircraft are quite difficult to tune. Take it slowly and carefully.

[aziz_kountche]

Thanks for response will try like that .

[Prashant_sood]

Hello @GregCovey

my quad is tilting to one side…can u pl tell whats the problem. below is the log:
Log File C:\Users\PRASHANT SOOD\AppData\Local\Temp\tmp123C.tmp.log

Size (kb) 108.5234375

No of lines 2133

Duration 0:00:01

Vehicletype ArduCopter

Firmware Version VDD_5V_PERIPH_nO

Firmware Hash 4fcfa4b2

Hardware Type

Free Mem 0

Skipped Lines 164

Test: Autotune = UNKNOWN - No ATUN log data
Test: Brownout = GOOD -
Test: Compass = WARN - WARN: Large compass offset in MAG data (X:377.00, Y:43.00, Z:38.00)
mag_field interference within limits (9.07%)

Test: Dupe Log Data = GOOD -
Test: Empty = FAIL - Empty log? Throttle never above 20%
Test: Event/Failsafe = GOOD -
Test: GPS = FAIL - Min satellites: 0, Max HDop: 99.99
Test: IMU Mismatch = NA -
Test: Motor Balance = UNKNOWN - ‘OCTAQUAD/X’
Test: NaNs = FAIL - Found NaN in CTUN.TAlt
Found NaN in CTUN.DSAlt

Test: OpticalFlow = FAIL - ‘FLOW_FXSCALER’ not found
Test: Parameters = FAIL - ‘MAG_ENABLE’ not found
Test: PM = UNKNOWN - No PM log data
Test: Pitch/Roll = GOOD -
Test: Thrust = GOOD -
Test: VCC = UNKNOWN - No CURR log data

[manavgandhi17 (Manav Gandhi)]

@moderators @admins

This poster above is spamming to several random posts with useless info about his quad.