Tag Archives: foamy

Video 29 0 00 02-232

30-inch Dead-Simple Wing

So, I’ve been MIA for a few weeks or so; since early august. I have been up to stuff and one of those stuffs is a 125% Dead-Simple wing from specs found at RCGroups. Instead of 24-inch wing-span, I built mine 30 inches wide. I put on a Blue Wonder and took to the skies.

 

On Saturday, September 24th, I went to Ives Estates Park with my friend, Julio and my wife and son to fly the wing. I had flown it once before and had great success but crashed it. After repairing it, it looked pretty good so I decided I could go for it again.

It flew on rails. It was as smooth and straight as it gets. We clocked it at 51 MPH on the following setup:

It rolls pretty good and you can see it can fly really slow too. After a few flights, we changed batteries and flew again.

Julio had never before flown and RC plane so I thought I’d let him fly my cheap wing since he had a ton of hours on a simulator. He did f’awesome! He even dead-sticked it! Here’s Julio’s second flight:

Overall we had a pretty awesome time. The wing is crashed again but I can fix it. I might make a new one but we’ll see how much free time I have. Look out for my next project: A way-fast jet.

Also, I’ve noticed those OrangeRX 6-channel receivers have pretty good range. I flew the wing out almost out of LOS and never glitched. Pretty sweet for a $6 receiver.

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Park Jet Sneak Peek

The foamie jet is coming along nicely. I’ve finished gluing the wing and fuselage. The vertical stabilizer is on and all that’s left is to cut the elevons before the electronics and parts arrive. I must say: it looks sexy! I can’t wait to see it in the air.

A bit of sad news: HobbyKing.com has announced a new “V2″ radio system to replace my radio so I think that system is canned. The receivers are out of stock and don’t seem to be coming back in. I think it’s time to invest in some kind of modular radio.

New 26″ Park Jet Foamie – Intro

Here’s a little ParkJet I’m designing with some inspiration from @LIPOPILOT‘s S-28 Shadow. It’s a clipped-wing delta jet with one vertical stabilizer and air-foil wings. I’ve never designed my own foamie so I’d like your input

I’ll use the airfoil technique I saw LIPOPILOT use on his S-28; two layers of foam board: one with the paper removed. The bottom of the wing is flat and still has the paper, while the top of the wing is paperless and curved to the shape of the airfoil. The curve is achieved by a dowel between the two layers of foam. This worked great for him and I hope it does for me as well.

I have designed a sort of air-cooling system to cool the electronics. I first saw this idea on the X-41 foamie by T3chDad. The air enters the nose of the plane much like in the post-WWII Migs and flows through a square funnel-shaped fuselage to exit out of two exhaust vents near the rear. I’m not sure of the effects of this on aerodynamics and wether it will affect the flight characteristics at all.

On paper, it seems like it would work but I’ve never done anything like it before so I’d like your input on this idea. I’ve attached a couple of sketches with notes I’ve done so far. You can use this as you please. I’d like to see something come nice built from it. I have never done any plans for foamies or even designed my own so this is all guesswork from experience with other plans and kits.

I’m going to build the fullsize templates and start putting them together and see where it goes from there.

Images:
http://www.maydayrc.com/wp-content/uploads/26ParkJetSketches1.png
http://www.maydayrc.com/wp-content/uploads/26ParkJetSketches2.png

Here’s the .PDF:
http://www.maydayrc.com/wp-content/u…etches0001.pdf

Mach-3 Foamy Build

I’m building the Mach-3 by chara. Its free plans are located in this RCGroups thread.

Tonight I got the 4mm foam from Dollar Tree and cut the pieces out. I glued the cockpit/fuselage together and the horizontal stab/elevator to the vertical stabs.

http://www.maydayrc.com/wp-content/uploads/2010/04/photo-0472.jpg

http://www.maydayrc.com/wp-content/uploads/2010/04/photo-0473.jpg

Things to-do this week or two:

  • Put in 3mm carbon-fiber rods (36 inches x 2)  in main wing, vert stabs, elevator and down length.
  • Hinge all control-surfaces (ailerons and elevator – original version is elevon-mixed; something which I cannot do with my radio)
  • Cut-out canopy for battery access.
  • Glue back-half to front-half of plane.
  • Install servos and linkages
  • Build motor-mount
  • More…

Follow this build at RCG:
http://www.rcgroups.com/forums/showthread.php?t=1230656