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Dumb question re: Course lock

Discussion in 'Phantom 2 Vision + Discussion' started by Phantom_Menace66, Jul 9, 2014.

  1. Phantom_Menace66

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    At the risk of sounding like a right dill.... I understand course lock allows one to rotate the Phantom 360deg whilst it is maintaining a particular course (brilliant idea by the way), my question being: Is the rate of travel preset or will it maintain the speed at which it was traveling when CL was activated?
     
  2. jerrymac12000

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    It will maintain the same speed.
     
  3. npalen

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    I would think that the speed could be controlled as in other modes.
     
  4. Dirty Bird

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    So long as you hold the right stick steady, she maintains speed as you rotate with the left stick.
     
  5. sar104

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    Yes - I think that you are misunderstanding how it works. Activating CL just locks the direction of travel for forward pitch (right stick forwards) and makes it independent of the direction the aircraft is actually facing. Speed is still controlled as before - by the amount of pitch (or roll) applied.
     
  6. Mori55

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    When it comes back to home point , it's like your the center of a spoked wheel. It'll fly around you not some object away from you.
     
  7. sar104

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    You mean in home lock mode presumably. CL always results in rectilinear flight paths, even around the home point.
     
  8. Mori55

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    Well when you come back in home lock it changes to course lock in I think its 30' from home . Then it'll circle around you .
     
  9. sar104

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    It does switch out of home lock to course lock 10 m from the home point, but course lock does not lead to circling - that would be home lock.
     
  10. Cocoa Beach Kiter

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    I'm not sure I understand how home lock could result in circling. My experience has been that when returning with Home Lock and you are within 30 m, the path is more angular as it reverts to course lock, then back to home lock exiting 30m. It never actually circles.
     
  11. sar104

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    In home lock, roll input, with no pitch, will result in circling the home point.
     
  12. Cocoa Beach Kiter

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    Wow, thanks for the post. That makes sense. I have only used the "back" input. Never thought about what would happen if left or right input was used.
     
  13. sar104

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    No problem. Home lock is represented by the wheel and spokes model, with the home point at the center. Pitch drives it out (or back) along whichever radius (spoke) that it is positioned on, while roll drives it circumferentially, clockwise or counter-clockwise, keeping it equidistant from the home point.

    Course lock is represented by a 2-D rectilinear grid, with one axis parallel to the direction that the aircraft was facing when CL was last registered - typically at power up unless it is later reset by S2 toggling. Pitch drives it along that CL axis, and roll drives it orthogonally.
     
  14. Mori55

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    Wish I could of explained it that well !
     
  15. Cocoa Beach Kiter

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    Agreed...

    Wish I had known this before! I needed to do a 360 view of something for a video I shot. Using the roll and yaw together to try and make a smooth circle was a challenge .... Now I think had I set home point over the object and used the Home Lock circle described it would have been much smoother and easier.
     
  16. jimdenburg

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    Great explanation! Although I will now have to google the word "orthogonally" :)
     
  17. Mori55

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    I should of paid more attention in school ! :lol:
     
  18. srandall25

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    Not really... In plain English, the nose doesn't stay fixed to the center or home position. It's fixed to a set compass direction... Your last yaw position
     
  19. npalen

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    I believe that is true in COURSE lock but not in HOME lock where the phantom should revolve around the home point when using the roll stick input. The direction that the bird faces when doing this "revolution" can be changed at any time using the yaw stick input if I understand correctly.
     
  20. Cocoa Beach Kiter

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    You are correct. If for example you hold the right stick to the left it will make a smooth left circle around the home point. All you have to do then is using the left stick yaw the Phantom to maintain camera focused on your object. It is much easier than trying to keep a smooth circle manipulating both controls.