|Aug 07, 2009, 02:38 PM|
Joined Nov 2004
Marske Pioneer II or III help
Does anyone have the plans for a built up wing (scale unimportant) for this sailplane? Any help would be greatly appreciated.
|Aug 09, 2009, 09:49 PM|
Here are a few things of interest !
|Aug 10, 2009, 03:22 AM|
birdofplay - I seem to remember reading a thread on the Marske Genesis here on RCG where (I think it was you) posted a cad plan of the fuze and wings for the Pioneer III. Do I remember clearly or not????
|Aug 10, 2009, 04:56 AM|
Joined Nov 2004
Thanks for the replies guys.
birdofplay - I also have that dxf of the wing. I just don't know how to go from there to a wing plan (I'm not a scratch builder unfortunately).
jason H - were you planning on building a full size Pioneer and/or Monarch?
|Aug 10, 2009, 11:33 AM|
Sail-r I use Stephano Duranti's - Profili program for blending foils root to tip.
Although a good CAD program can be used to loft and take sections.
Guys, I haven't actually built a Pinoeer I, II or 3 yet.
I too have Full iszed Monarch plans.
Local guys tell me that wings are hard to see/judge when thermaling at long distances. That and some unfortunate threads about other wings kinda
deflated my initial enthusiasm for a model build.
If I posted a "plan" is wasnt a traditional version.
Mostly outlines and positions but not a "pretty" like you might purchase elsewhere.
I mostly fool around with designs in CAD.
I've attempted to 3D CARVE a fuse with my CNC but I quickly discovered that
using "pink" foam layers glued together was a tactical error !
Then again I'm too cheap to invest in a big chunk of urethane sign foam.
I have recently built a P3 foiled flying wing.
It's "kinda" Horten III in plan form but without the long rounded tips.
And even better ... it flys fairly well.
My criteria were ...
Use Blue Fanfold foam as the covering ( for a cheap material experiment )
Make it as large as that type of material will allow - giveb it's Std size 2'x4'.
USE the natural Bend in the foam as the Leading edge.
USE the Marske P3 reflexed airfoil.
The span is ~ 84" and I used a Komodo 2313 motor and 4ea A123 cells.
But I still had to add some weight to get it to balance. other equipt ...
Two old S148 servos an AR7000 RX for range and a 40 amp ESC.
I flew it at the Portland Aero Tow a Week ago and at the Mission aero tow
just this weekend plus other test flights.
The ribs are CNC cut 1/4" balsa with Building tabs on the bottom.
I glued them to the Foam after cutting holes in the foams for the tabs to poke thru.
Only 1/4" balsa spars were used.
Regardless it fls well. Although it has some wiggley yaw action when turned.
It currently has no rudder.
The Tip plates were added after initial test flights demonstrated a sloppy looking flight.
SO it now "looks" like a giant combat wing.
So far it does NOT tip stall. I showed several guys "While in flight" that I could
bring the stick all the way back without tip stalling.
Comments were made on how flat the glide was.
It'll roll, loop and an incomplete loop results in a neat Flip.
The whole thing is ~ 3#.
I've covered the whole wing with colored packing tape
I'll ad some flight shots later as I havnet down sized them yet.
|Aug 10, 2009, 01:53 PM|
I have a quarter-scale Marske Pioneer IID, and I can attest it is not without its problems. Bob (birdofplay) mentioned that it is difficult to thermal, because it is so hard to see the pitch attitude of the egg-shaped fuselage. It also presents challenges for aerotowing, as the rudder is wholly inadequate for keeping it straight on take-off, especially if you drag a wingtip. I've flown it on the slopes (Point of the Mountain, Eagle Butte), but is also has a surprise tip stall that will catch you sleeping, so even that is not much fun.
I tend to leave it parked in the hangar, for the most part. Sure looks weird on the wing, though! Like nothing you've ever seen before.
|Aug 10, 2009, 03:15 PM|
For anyone interested I've place a vid of the wing flying at Mission B.C. here ...
Don is the guy who should know.
RE tip stalls: I think that can be remedied with some washout and
mine has a good deal of sweep, more than the PII.
Then again Jim Marske's P3 has forward sweep as seen in the pic above.
The P3 foil is, I believe, a follow-on from some things learned over the years
not the least of which stems from the Team Gemini years.
I hope all this helps :-)
|Aug 24, 2009, 11:13 AM|
Joined Jan 2008
I like wings more than conventional planes. Except for the lack of room for radio gear. That is why i am adding a center section. I now have the best of both planes.
|Aug 24, 2009, 01:33 PM|
The angle was kinda based on how much I could get from a
single piece of Fanfold.
Actually two pieces due to using the Mfgrs Bend as the LE bend.
Even with TIPS it tends to Wiggle around a bit.
But some of that is the blustery slppe conditions.
However I've sloped it for over an hour.
See pix below
|Aug 24, 2009, 10:02 PM|
Look at the wing in this pic
is has Tip plates and Also a Canopy on top where I put the RX and ESC
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