Welcome to PhantomPilots.com

Sign up for a weekly email of the latest drone news & information

Professional Course lock - windy condition - what to expect

Discussion in 'Phantom 3 Help' started by Volkhard, Jul 29, 2015.

  1. Volkhard

    Joined:
    Jun 18, 2015
    Messages:
    125
    Likes Received:
    83
    Location:
    USA, Florida
    I like to try course lock for the first time tomorrow in preparation of a real estate shot. As I am directly at the coast I have to deal with about 5+kt of wind perpendicular to my flight pass. It is my understanding GPS guidance is dissabled in F-mode so I have to expect offset of my course while I am unable to counter steer. Am I right with this assumption? Toggeling back to P mode will give me back instant controll under GPS guidance if I drift too far. Of course, I will do test runs with plenty of safety altitude to avoid running in buildings or trees.
    Eventually I want to do a flyby below roof altitude but practice comes first.
    Can I change from P to F and therefore enable course lock on the fly while in the air or are there other steps involved? Of course I would enable advanced mode IOS before launch, but would start in P mode and stabilize at a good starting point and switch over into F mode and course lock for the flyby and switching back to P mode For more stabilized flying.
    perhaps I am overthinking it, but I appreciate comments from more experienced P3 pilots
     
  2. happydays

    Joined:
    Jul 5, 2013
    Messages:
    1,846
    Likes Received:
    655
    Location:
    Warrenpoint, Ireland
    AFAIK, GPS is still active with CL selected.
     
  3. bbfpv

    Joined:
    Feb 3, 2015
    Messages:
    3,745
    Likes Received:
    1,092
    Location:
    Long Island, NY
    @Volkhard you're confusing CL with ATTI. CL is still GPS assisted, ATTI is not.
     
  4. N017RW

    Joined:
    May 2, 2014
    Messages:
    6,244
    Likes Received:
    1,614
    Location:
    Palm Beach Co.- FL
    Page 55 of the manual indicates that CL does not use GPS.
    But they use the obscure indicator of 'counts'.
     
  5. msinger

    Approved Vendor

    Joined:
    Oct 30, 2014
    Messages:
    18,942
    Likes Received:
    5,578
    Location:
    US
    Course Lock definitely uses GPS. I think the manual might be trying to say GPS is not required in order to use course lock. My Chinese is not that good though :)
     
  6. GadgetGuy

    Joined:
    Jun 18, 2015
    Messages:
    4,459
    Likes Received:
    1,294
    Yet more confusion! :rolleyes:
    Will the real Orientation Lock please stand up and tell us how you actually function!
     
  7. Dronebow

    Joined:
    Jul 7, 2015
    Messages:
    445
    Likes Received:
    156
    Location:
    Texas
    If Course Lock is enabled then GPS is No.
    Translates to Chinese as:
    如果啟用鎖定當然GPS話沒有。
    Which translates to English as:
    If GPS is enabled, then of course there is no lock.

    Any questions? :-/
     
  8. msinger

    Approved Vendor

    Joined:
    Oct 30, 2014
    Messages:
    18,942
    Likes Received:
    5,578
    Location:
    US
    It all makes perfect sense now :D
     
  9. GadgetGuy

    Joined:
    Jun 18, 2015
    Messages:
    4,459
    Likes Received:
    1,294
    Consistent with the anecdotal flying experiences cited above in wind!
    Better question would be, why not?
     
  10. J.James

    Joined:
    Apr 21, 2014
    Messages:
    1,882
    Likes Received:
    162
    Location:
    Upstate NY
    I get gps in CL and usually fly in CL most of the time I never had any problems. With gps or stability.
     
  11. Volkhard

    Joined:
    Jun 18, 2015
    Messages:
    125
    Likes Received:
    83
    Location:
    USA, Florida
    I can only comment on my own experiences: when setting Cl with crosswind and flying strictly forward, phantom is going slightly to lee. Flying back on the same course with the stick strictly pulled back, the phantom comes back but is again a little more offset to lee. To me that makes it clear we have some drift induced by the crosswind. If the CL was GPS supported it should compensate for the drift and end up more or less at the initiation point, not offset to lee.
    It is not a problem for me as I can either compensate during flight or setting my course slighly to windward when planning a shot.

    I hope someone else would fly the exercise and report their findings.