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Author Topic: Youtube video with Chase cam version 6  (Read 4727 times)

Offline leshoman

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Youtube video with Chase cam version 6
« on: September 01, 2014, 09:11:21 AM »
Uploaded another chase cam video using chase cam version 6.  There is a difference in each version tried so far. Working on version 7 in the shop and getting materials for version 8 next week.   SAFETY NOTE: if you try this make sure there is a safety link between the line and the chase cam in even the chase cam gets caught up on something, better to loose the camera than loose the flying machine and occupant. I am using two light wire key rings, not standard key rings. I will detail all when i get little better results on consistent bases.   I call this a chase cam but more accurately it is a follower cam. 

Les Homan

Offline Sam Buchanan

Re: Youtube video with Chase cam version 6
« Reply #1 on: September 01, 2014, 10:13:21 AM »
Hey Les, how 'bout some landing gear on that thang so it can see the Eagle landing?  ;)

Very cool viewpoint (reminds me of what we see when formation flying in the RVs), but I'm having to get my mind wrapped around something dragging from a wingtip. Done any slow speed or stall tests yet?

Offline leshoman

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Re: Youtube video with Chase cam version 6
« Reply #2 on: September 01, 2014, 01:23:53 PM »
Still working out bugs. Just tried next interation hoping to see more at take off and landing but no joy.  Have 2 more versions under development and should fly sometime this week. Working on getting to fly higher. Present best version flies about 15 to 20 feet down. Once i get it to doing wfat i want have lots of ideas in mind
Les Homan

Offline leshoman

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Re: Youtube video with Chase cam version 6
« Reply #3 on: December 03, 2014, 08:10:57 PM »
Update on chase cam adventures. I am working on version 12 now, the best so far is version 11, modification 2.  Model 12 is addressing one of the problems all previous versions  have had, the rolling. From what i have learned so far almost anything will work when it is dead calm, if camera is aimed to get a good shot.  When there is the least bit of wind the unit likes to roll, in the plane it is corrected with ailerons so version 12 will have ailerons.  The ailerons are controlled by an RC airplane stabilizer.  Finally found someone at a hobby shop in Pittsburg Kansas that took interest in what i am trying to achieve and set up several of the interations i had been told might work and showed me they would not work, he then got me what will work and put it all together.  Well worth the 3 or more hours he spend with me explaining all to me.  I make an investment that will put off getting a gopro 4 black for a while but if this works the video with the 3 should be great.  I spent the evening designing model 12 and getting ready to fabricate.  Typically the chase cam follows the flying machine unless there is a lot of turbulance and the moving back and forth., rudder effect on the flying machine, has not been a problem except on models where overall length was short.  The largest challenge has been getting the camera out and tilted to frame flying machine and surrounding scenery in one picture.  The next largest problem has been the rolling. 
  We are getting ready to go into our calm wind period during the winter so i am hoping as the grass greens things will come together.   I have a video with a lot of parts ready to go but want to put this model in when i get it flying.
Les Homan

Offline s johnson

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Re: Youtube video with Chase cam version 6
« Reply #4 on: December 03, 2014, 08:43:44 PM »
Looks Great to me Les!!! nice to see you're still at it.

Scott j.

Offline stevejahr

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Re: Youtube video with Chase cam version 6
« Reply #5 on: December 04, 2014, 09:13:22 AM »
Interesting approach.

Any pictures of the camera platform?

I am picturing a moderately small airplane although the bigger they are the less bouncy the camera platform.  Very likely high wing.  Has to fly itself so I would lean towards old free flight type designs for stability.  Note that stable platform provides safety benefit in case of tow line separation.

I would think a lot of dihedral but that would turn into roll very quickly with any yaw.

Getting it to fly below or above the tow plane should be pretty simple actually.  Just need R/C to fine tune the AOA in flight.  Could also use R/C to adjust distance in back of video target.  Might try a symmetrical airfoil on the wing as these have a bit shallower CL curve around low AOA making them less sensitive.  Might adjust wing area to match up flight speeds with LE.


Can you tell I used to build and fly R/C with a bit of design thrown in for fun?

Offline Mick Allison

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Re: Youtube video with Chase cam version 6
« Reply #6 on: October 25, 2016, 04:18:59 AM »
Hello Les   Mick from Bundaberg Australia here sir. Your chase camera work is terrific stuff and very interesting to watch.   When reading your forum up dates I was reminded of my instructor during training who demonstrated the aircrafts (J3 cub) inherant stability by allowing her to stabilise by its self and it gave me the thought that a chase cam with aerodynamic control surfaces that are free of imput may self stabilise as well.A big arse industrial fan used as a wind provider would test out the theory on a balsa model I think without too much of a time waste,   if i,m completly wrong Les.  Anyway I enjoy your R&D work and look forward to seeing more  Cheers  Mick  Allison

 

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