Rahul's RC Aircraft and other designs

 This is a Plank flying wing for SAL or bungee The dimensions are  Span = 875mm, Root cord = 260mm, Tip cord = 160mm, sweep = 60mm. 20mm constant cord full length elevons The wing is hotwired out of EPP and then laminated with thin iron-on laminating film. The airfoil is PW51 7% thick at the root and PW51 7.5% thick at the tip. It has a 1.5 degree washout and a 45mm dihedral at the tips.  It has one 2mmCF spar glued to the bottom positioned at 40% cord. There is also a spar on the top surface biased to the rear to avoid elevon reversal. Two 9g servos are positioned vertically into slots cut on the top of the wing. The position of the servos are driven by the thickness of the wing at that part and distance from CG. The full length elevon is a tapered 3mm balsa with fiberglass lamination. ....Note I had to increase the elevon cord at the tips by 12mmto improve the control response (after the first flight trials) The fuselage is a 3mm CF rod glued onto the bottom of the wing...

 Here are the details of a SAL 1m plank wing glider The airfoil is PW1211. The wing is hotwired out of high density EPS. It has a 1mm CF rod epoxied to the underside , and a 5mm  wide CF tow lamination on the LE underside.. these act as spars. The TE has a 2 mm balsa 30mm wide, part of which is also the elevons, and balsa wing tips Fuselage is a 3 mm CF rod .. with some scrap balsa glued onto it to in front to act as the place to attach the RX and the battery.. the front part of the fuse is covered by a PET sleeve The wings are but joined with the 3mm CF rod sandwiched in between  and have two additional balsa joiners glued from top The whole wing and elevons are finished and coated with water based PU sealer mixed with light weight crack seal.  The rudder is glued onto the 3mm CF rod sticking out behind the TE It has two 4.5 gms servos controlling the elevons , and the 1s 350 mah bty directly plugs into the Rx. Dimensions Root Cord - 230mm (220 mm foam) Tip Cord - 1...

  A 1500mm size thermal ePowered plank wing. Composite construction Medium AR, low WL .. Elevons moved outboard to enable inboard wing generate max lift during slow thermalling.    Dimension Sketch Airfoil BW050209 Wing area 39.43 sq dm CG @ 10% SM = 100 mm, @ 15% SM = 87 The wing was hotwired out of high density EPS (thermocole). Built-up full length CF spar. Tow width on top 18mm, bottom 24mm. The spar has a 5 x 3 mm vertical balsa compression webbing buried below the CF tow (full length).. The built-up spart is at 33% of cord. The routed 5mm groove for the vertical compression webbing visible. Also you can see the shallow trough which has been sanded for the CF tow cap of the spar. A picture of the wing core with the CF tow for the spar caps. A view of the laid out built-up spar This one shows the vertical webbing Built up spar ..all elements in position and weighed down …. awaiting for the epoxy to cure the wing with the spars in place.. is is...

  A thermal plank with low wing loading and a low drag airfoil. It has elevons and an active rudder. Dimensions and details Wing Span panel 1 =695 mm, Wing Span panel  2 =298 mm, Total = 1986mm The Airfoil - HS 117. Cord panel 1 =250mm, Cord panel 2 (tip) =150mm Sweep panel 1 =0, Sweep panel 2 (tip) =30mm Dihedral panel 1 = 20mm, Dihedral panel 2 = 150mm The Airfoil is HS 117. Vertical Tail to wing TE distance = 410mm, Vertical Tail cord 100mm, Vertical tail span 230mm Control surfaces are elevons and rudder The wing is hotwired out of EPS and covered with fiber-glass (vacuum bagged). The central portion has a CF tow (5mm) running on top and bottom. The two outer panels of 298mm each are detachable for ease of carrying.  The elevon cord is 40 mm and it is across the whole length of the inner panel. It has a kevlar hinge built into a skin, and the underside gap sealed with mylar (BO_PET) strip Wing area in inches = 723.4 sq inch Electronics 2212 9...

 This is a build log for a large plank flying wing. I named it "Pelican".. loosely based on the Pelican mentioned in nestofdragons The basic dimensions and calculations are as below..  The airfoil is phoenix The central section and each of the outer section are meter each. The outer sections have a dihedral.   It would has a central elevator and two outboard elevons/ailerons.. synchronized through TX mixing  The wings are hotwired out of EPS (closed cell polystyrene- thermocole) . It has a 1.25 inch top and bottom unidirectional carbon fiber cap spar and a 3 mm ply compression web across the whole wing. The whole wing is laminated one layer of 100 gsm fiber glass (unfortunately that was the lightest FG I could lay my hands on).. with the LE having a extra layer to form a Dbox The  wing is in 3 pieces (each of one meter), The outer panels are joined to the central portion by  rectangular aluminum bars and also locked with 4 x 3mm bolts   All t...