42% Scale RQ-2A Pioneer UAV
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Comment by John Johnson on April 5, 2012 at 5:19pm

I am going to see if I can dig up some old Pioneer photos if you are interested.

Comment by John Johnson on April 5, 2012 at 5:21pm

Some trivial data: The US Navy is still flying the Pioneer for R&D/Testing purposes.  Not in theater.

Comment by Hendri van den Berg on April 12, 2012 at 9:50am

Paul you did a amazing job. Is it posible to get a copy of you file's i would love to bould one my self.

Comment by Paul Marsh on April 12, 2012 at 10:01am

Hi Hendri,

Thank you very much for your kind words.  I have been making my plans available to anyone who asks, so I'll send the links to you this evening.  I'm glad to be able to make a small contribution to those in this community that are interested.  I wonder if someone else will fly this design before I do!  I hope to get back on this project soon, though.

Paul

Comment by Barron on April 17, 2012 at 10:37am

Paul, would you mind sending the links to me also ?

Comment by R Bruyn Tupy on August 15, 2012 at 10:48am

Hi Paul, you did a amazing job !! Is it possible to get a copy of you file's ? Thanks.

Comment by Paul Marsh on August 16, 2012 at 4:26am

Hi R Bruyn,

I'll be happy to send a link for you to download the files.  Please accept my friend request so I can send you a PM.

Thanks,
Paul

Comment by Phil P on October 24, 2012 at 5:57pm

Hi Paul, I saw your vid on youtube. I'm commencing building a craft that will be relatively similar in shape. I won't be holding true to the original Pioneer tho.... I have built a few smallish planes before but only from plans. This will be my first go at a scratch built plane. I wonder if you can help with a couple of questions... Did you do any calculations on what effects the scaled down model will have on its ability to fly? Things like the distance between main wings and tail, aerofoil shape, etc. Does it matter much?

Comment by Paul Marsh on October 24, 2012 at 6:28pm

Hi Phil.  Thanks for your note.  I didn't do any special calculations or scaling.  As a friend of mine said, who actually designs and builds model airplanes, I'm making a model of a model (i.e. the real Pioneer is pretty small relative to other aircraft).  Also, I was very fortunate to get some input from someone at IAI, the company that designed and built the real Pioneer.  I was given dimensions and the NACA airfoils used in the original.  I was encouraged to build a 50% model, but that was just over the top for me in final size.  If you are building something close in overall shape, I don't think you need to worry too much about adjusting for scale.  I have even read that people worry too much about selecting the airfoil when it comes to models.  Unless you're designing for very specific performance parameters, you just need to be in the ballpark.  I hope this helps, but please don't hesitate to ask anything.  I'll do what I can to help.

Thanks,
Paul

Comment by Phil P on October 24, 2012 at 8:03pm

Thanks for that. What about engine size Vs weight of the plane? 

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