25 November 2015
Full size is 27' x 4' wing. Do one for slope soarer?
Use WLToys receiver with Flysky module for elevon mixing, only elevons with pushrods at bottom of wing, fixed rudder, full span elevons. Maybe to 1/12th scale with folded foam for fuselage and clear canopy (with a pilot inside)? Then receiver and battery can be hidden. And when I can't slope soar it, maybe I can do a pylon mount for a 7-8mm brushed motor direct drive spinning Hubsan type of propeller? Or how about twin 6-7mm motors out on the wings?
Airfoil for the wings would of course look good, but since this model is going to have a very light wing loading but used for slope soaring, the drag has to be reduced so I shall thin the wing down, that and the fact that 3mm foam wing with 3mm balsa leading edge and thin plate airfoil for the 27"x4" wing is easy to construct.
Canopy and top decking maybe moulded from clear PVC sheet, but that means I shall have to make a male mould and a plywood cutout.
The lower fuselage can either be made from 3mm foam. Alternateively, if I use PVC sheet, it is more durable afterall the fuselage is very short. The top nosepiece can be stretched PVC over a blue foam mold without the corresponding plywood cutout. The nosepiece is glued to the PVC sheet sides and bottom sealed with another piece. Perhaps I can use this lower fuselage like a removable pod for access to electronics and battery.
Airfoil for the wings would of course look good, but since this model is going to have a very light wing loading but used for slope soaring, the drag has to be reduced so I shall thin the wing down, that and the fact that 3mm foam wing with 3mm balsa leading edge and thin plate airfoil for the 27"x4" wing is easy to construct.
Canopy and top decking maybe moulded from clear PVC sheet, but that means I shall have to make a male mould and a plywood cutout.
The lower fuselage can either be made from 3mm foam. Alternateively, if I use PVC sheet, it is more durable afterall the fuselage is very short. The top nosepiece can be stretched PVC over a blue foam mold without the corresponding plywood cutout. The nosepiece is glued to the PVC sheet sides and bottom sealed with another piece. Perhaps I can use this lower fuselage like a removable pod for access to electronics and battery.
14 September 2014
Sub 40 gm. Flies great after CG is appropriate. Nimble and good glide. I was concerned about the large nose area.
Profile Scale
Span 20"
Chord 4"
2 gm brushless on 1s esc (1gm) 1s150mah, 3"x2" prop.
Throttle and elevons
Mass sub 40 gm (5gm noseweight)
Compressed foam sheets 5mm.
S-airfoil, carved leading and trailing edges with NT cutter.
1mm balsa fins.
Span 20"
Chord 4"
2 gm brushless on 1s esc (1gm) 1s150mah, 3"x2" prop.
Throttle and elevons
Mass sub 40 gm (5gm noseweight)
Compressed foam sheets 5mm.
S-airfoil, carved leading and trailing edges with NT cutter.
1mm balsa fins.
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