Rahul's RC Aircraft and other designs

 A slightly different 3D plane designed and made by me. Span is 900mm The wings are low AR and highly tapered. It has a deep fuselage, akin to a pattern flyer. The LE of the ailerons are also tapered. Additional vertical side was added via wingtip plates and a dorsal fin. This gives the ac fantastic tracking an handling. All surfaces are made out of 9mm epp sheets, which were hotwired out of a EPP block.  It has a few CF 3x1 mm strips embedded for strength and stiffness. Additional stiffness is comes from fishing line rigging across the fuselage, wings and tail surfaces. This gives the aircraft very good stiffness without adding weight and is very strong (the fishing line is kevlar).  Electronics : 2212 1400kv motor, 9x5 prop, 30A esc, 4 x 9gm servos. Flies witha 1300/1000mah bty.. AUW 500gms.   A beautiful looking aircraft, which also flies amazingly. Even other flyers vouch that it flies better than many brought out 3D kits. Here is the plan

A fast rc aircraft for flying for windy days (not a floater). Main design aspects, around 36" span, Plank Flying Wing, like funjet (not swept back and hence no twist), low drag, higher wing loading,  high power /wt, symmetrical airfoil. Material blue foam / insulation board / XPS..  Airfoil NACA0009, thickness 9%. , hotwired the final dimensions are 1. Span =  880mm / 34.6" 2. Root cord = 250mm / 9.8" 3. Tip Cord = 150mm / 5.9" 4. Sweep = 30mm / 1.2" CG @ 15% = 44.5mm / 1.75" Wing area = 17.52 sqdm / 271.6 sqinch / 1.88 sqft The wing was hotwired out of blue xps. The fuse is also blue xps, hollowed at some places , with some strengthening Initially I was planning to have a CF sparred wing covered with monokote ..  hence, according to the earlier plan , the wing  has CF spars  and a CF tow, while the fuse has balsa and an aluminium channel embedded for strength. Latter on, in midst of the construction, decided to cover the whole aircraft w...

This is a 40 inch SR71 built of 5mm depron/biofoam It has two tractor motors, one each in the LE of the nacelles.. The plan has some modifications in the aspect ratio and other dimensions, and the details are as below Controls are just elevons on the outer wings (outside of the nacelle)  with 1 X 9gm servo each.. there is no moving control surfaces on the central portion of the wing or on the vertical tails.. btw the vertical tail surface are straight and not canted inwards. Note , the LE droop on the other wing panels. The landing gear is  tricycle wire skids.. to protect the prop and underside of the aircraft.. have a look at the photographs below The finished aircraft , just before the 1st flight. Notice the bty compartment... because of the low roll/ lateral stability the bty had to be in the center, hence the fuse had to modified.. and before that the CG had to be right.. First flight was done with the CG at 30.5" from the tip of the nose.. ...

This is a build log for a 54" flying wing with a blended fuselage  Made out of Styrofoam and hotwired Wing Span -  54" Airfoil - MH 64 Root chord - 14" Tip chord - 7" The wings were hotwired out of styrofoam based on a MH 64 airfoil. The spar was a strip of 1X3 carbon fiber glued in a shallow groove on the top and bottom surface of the wing. The two strips of CF act like a I beam with the foam in between, and being very strong in tension, makes a very rigid wing. There was a central section 6.5" wide fuselage, which was blended with the wings. This would help by having more space for power train & electronics  The CFs extended into the central section , which gave more rigidity and strength and intregrated the wings and fuselage better The LE was covered with very thin fiber glass to reinforce it against dents A view of the wings and fuselage joined together.. note the space being cut for electronics and battery.. . this would lat...

Pictures and build highlights of a SU 35 The plan printed on a A4 paper. The whole design was based around a 9"  space for prop (mid mounted). With that as the base, the conversion ratio was 1cm on plan was 5.88 cm actual. The total span was 95.1 cm or 37" and the length was 114.6 cm or 45" The above dimensions were drawn on a scrap newspaper and templates cut out or traced directly on 5mm foamboard.  Note the Increased dimensions of the wing and tailplane.  few pictures of the construction The front fuse was made out of 5mm foamboard sides with a eps turtledeck The nose was shaped  out of  eps foam. Below is picture of the elevator mount. The elevator was full moving elevator. It hinges on a 3.5mm CF rotating on a 2.5" al tube. The CF was wrapped around with clear tape to mage a snug fit The wing had a leading edge droop which was reinforced with two chordwise stakes in each wing Note the beveling of th...