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top speed?

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

  1. Joseph Jang

    Joseph Jang New Member

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    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
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    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
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    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

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    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

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    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
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    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 ;)
     
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  7. Chris Fox

    Chris Fox Active Member

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    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

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    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

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    A manned (full-size) or unmanned (RC-sized)?
     
  10. Joseph Jang

    Joseph Jang New Member

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    Unmanned RC
    Unmanned
     
  11. Angus Benson-Blair

    Angus Benson-Blair Active Member

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    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.
     

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