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Thread: On Board Video With Chase Rocket

  1. #1
    Join Date
    20th January 2009
    Posts
    335

    On Board Video With Chase Rocket

    Saturday launched my Aerotech Mirage with a Memorex 7-in-1 camcorder looking downwards, on a H210 Redline. Merlin Missiles put up a chase rocket on a H220 Blue Thunder.
    Results:
    http://www.youtube.com/watch?v=HUxdX...e=channel_page
    You'll have to view the video in hi-def mode and probably have to watch the video in full screen mode to see the chase rocket.
    The chase rocket is in view near the end of the video (especially when the rockets lean over). I've tried to place an arrow on the video showing where the chase rocket is at 3 points in time.

    I think next time maybe the lead rocket should be on a less smokey motor, while the chase rocket should be on a smokey motor.

    Anyone have other ideas how to improve results next time?

  2. #2
    Join Date
    18th January 2009
    Location
    west Ft Worth
    Posts
    1,973
    Well, I'm not sure if this is a "statement of the obvious" or if you've already tried to do this, but-

    If you want the following rocket to have much chance of staying in the field of view, at a somewhat "consistent" range or distance, you are going to need to do some degree of matching the trajectories of the two rockets. Similar (or same) weight, similar size/drag, similar motors/thrust profiles, etc. That way, one won't run off and leave the other. Make sense?

    A little computer simulation and modeling might come in handy. This could give you a better idea of what ignition delay to use for the second launch to get optimum separation distances between the rockets in up-and-away flight. You might have to use some precision device to achieve the best control over delay time, maybe some sort of controllable electronic timer?

  3. #3
    Join Date
    12th March 2009
    Location
    Melbourne, Florida
    Posts
    37
    Very nice video! You just convinced me that one of my next projects will have to include a video camera!!! Thanks for sharing.
    Terry Reinert - KG4JSC
    TKRPhotography
    TB Rocketry.com.

  4. #4
    Join Date
    22nd January 2009
    Location
    Some where in the east coast
    Posts
    78
    video looks good..
    NRA 81712
    TRA 11129

    Level III

  5. #5
    Join Date
    20th January 2009
    Posts
    335
    Another launch. This time a vendor from TORC launch (Steve) put up a J90W. We let his J90 get off the pad, then lit my rocket's H220T, in hopes of passing his J90W and catching the J90 on video. Only got the smoke trail of the J90W, but still looks pretty darn good.
    http://www.youtube.com/watch?v=osjV3ZBg53U

  6. #6
    Join Date
    20th January 2009
    Posts
    335
    Tried this again. Put my Aerotech Mirage up on Aerotech H180W. Chased by Steve T (one of the vendors from TORC). Steve put up a Cessaroni Green K i think.

    Normal speed:

    http://www.youtube.com/watch?v=d_TBaaKjyzo

    Fifth speed by repeating frames:

    http://www.youtube.com/watch?v=PZOks0v1QDI

    Bob

  7. #7
    Join Date
    23rd January 2009
    Location
    Toledo
    Posts
    100
    I love the slow mo where the second rocket is fired to intercept

  8. #8
    Join Date
    18th January 2009
    Location
    Fullerton, Ca.
    Posts
    1,206
    That is pretty cool!


    The chase rocket needs a camera mounted upwards to see the first rocket.
    NAR L2 #84021
    Member SCRA #430

  9. #9
    Join Date
    7th November 2009
    Posts
    60
    would have been cool if the chase rocket did intercept the mirage... well i'm just saying.


  10. #10
    Join Date
    25th December 2009
    Posts
    24
    Great vids! Thanks for sharing.

    Here is a vid of one of a rocket I helped build. It belongs to Lou Goldring of St Louis. (No onboard video or anything spiffy like that, but kinda cool in its own right).
    http://www.youtube.com/watch?v=yCaOq3UT6Z0

    Dan Welling
    SLRA
    TRA 10016 L2

  11. #11
    Join Date
    3rd April 2009
    Posts
    85
    Great video - what was altitude?

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