top speed?

Discussion in 'MōVI MR' started by Joseph Jang, May 15, 2014.

  1. Joseph Jang

    Joseph Jang New Member

    Joined:
    Dec 10, 2013
    Messages:
    18
    Likes Received:
    3
    Hi. Do you guys know if the M10 can remain fixed and stable while flying at 46 knots?
    Any help would be greatly appreciated.
     
  2. Andy Johnson-Laird

    Andy Johnson-Laird Administrator
    Staff Member

    Joined:
    Jul 31, 2012
    Messages:
    10,364
    Likes Received:
    1,162
    Joseph: Do you mean that it's exposed to a slipstream of 46 knots? If so, I would rather doubt that, but others may have actually tried it and be able to comment more specifically.

    Andy.
     
  3. Gary Haynes

    Gary Haynes Administrator
    Staff Member

    Joined:
    Jul 6, 2012
    Messages:
    5,211
    Likes Received:
    460
    Joseph search on helicopter and there is some good information. Seem to remember that about about 30kts, totally exposed, you may begin seeing some issues. Fresh batteries that are fully charged would help.
     
  4. Tim Joy

    Tim Joy Active Member

    Joined:
    Aug 2, 2012
    Messages:
    405
    Likes Received:
    72
    With other gimbals I have found that it depends highly on what orientation the camera is in relative to the path of the copter. Straight forward or back can achieve the highest speed and sideways in a tracking shot the lowest, due to the un-equal wind pressure on the pan axis I think.
     
  5. Steve Maller

    Steve Maller UAV Grief Counselor

    Joined:
    Oct 30, 2012
    Messages:
    3,979
    Likes Received:
    807
    You may also find that you have to remove the MōVI’s landing gear and use retracts or even have somebody launch/catch it into and out of the air. The gimbal’s landing gear is going to cause a lot of wind resistance that that speed, and will likely translate into buffeting of the gimbal.

    The other, more serious concern is that at least with a Cinestar, flying at that kind of speed can be dangerous, as the copter can only manage so much lift when it’s banked at a severe angle (which is required to maintain a high rate of speed). You should do some controlled testing at speeds slowly increasing to the intended speed and make sure you can maintain altitude and control authority. However, if you’re using another platform (such as a single-rotor traditional heli or full-size aircraft), this may not be a concern.
     
  6. Gary Haynes

    Gary Haynes Administrator
    Staff Member

    Joined:
    Jul 6, 2012
    Messages:
    5,211
    Likes Received:
    460
    Joseph maybe you need to explain what you mean by 'flying' the MoVI? Attached to/hanging out of what? Car, airplane, helicopter, attached to a multi-rotor, single rotor RC? Will help with the answer since the gamut has not started to run over everything except mounting to a Titan V rocket ;)
     
    Steve Maller likes this.
  7. Chris Fox

    Chris Fox Active Member

    Joined:
    Apr 14, 2013
    Messages:
    463
    Likes Received:
    86
    Had the M10 flying in and around a wind farm on the weekend, and maxed out the speed at a touch over 40kts ... the footage needed some work in post, but was on the whole all usable. I've found camera selection plays a huge part in how usable the footage is when pushing it.
     
  8. Joseph Jang

    Joseph Jang New Member

    Joined:
    Dec 10, 2013
    Messages:
    18
    Likes Received:
    3
    Thanks guys. The M10 will be attached to a remote copter. We're not going to actually fly it at 46kts. We were accounting for headwind as well.
     
  9. Steve Maller

    Steve Maller UAV Grief Counselor

    Joined:
    Oct 30, 2012
    Messages:
    3,979
    Likes Received:
    807
    A manned (full-size) or unmanned (RC-sized)?
     
  10. Joseph Jang

    Joseph Jang New Member

    Joined:
    Dec 10, 2013
    Messages:
    18
    Likes Received:
    3
    Unmanned RC
    Unmanned
     
  11. Angus Benson-Blair

    Angus Benson-Blair Active Member

    Joined:
    Jan 23, 2013
    Messages:
    150
    Likes Received:
    25
    Ive flown a Canon 1DC on a movi, from an RC Heli at speeds of 40-45kts. Most of the footage was usable without any post. Where we did get shakes was due to big vibes coming in from the heli as we climbed hard due to the rotor head having to work hard.
     

Share This Page