Rahul's RC Aircraft and other designs

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 delta with a canard. Overall it looks a cross between a Eurofighter and a Viggen ..  High alpha flight was desired, hence the canard has a fixed front plate set at 0% and a moving rear plate.. more like a tail plane with a elevator.. (pics speak better than words).. For pitch-up, the canard rear plate moves down and the elevons move up.. The canard is controlled by a separate servo (5 gms) The wing platform is a delta with a KF2 profile. The leading edge of the wing is covered with newspaper which has been applied with diluted PVC glue . After shrinking it forms a nice , smooth and taunt surface , and also adds to the torsional rigidity. The wing has two 1mmX3mm CF strips glued to the top and bottom to acts as a spar (with the 6mm foam in between them) The test flight showed tendency of sudden onset of tip stalls and dropping of a wing.. To delay this two wing fences were added to each wing ... also it had landed badly and damaged the motor mount (tail-...

This is a F-18 with 30" span and with a 2826 2000Kv motor It is based on a scale F18 Growler with some changes in the dimensions.. refer to the picture below for the dimensions It has ailerons, elevator and rudder as controls and one CF spar in the wing Has a wire skid fixed undercarriage, and can do a rolling takeoff from a decently flat surface.. A good  flyer, and with the heavier parts (motor, bty) close to the CG was quite maneuverable  .. The finished but unpainted version.. the picture gives a feel of the size The canopy can be removed to access the battery compartment It has flown many sorties.. and has been retired and parts recycles (like many of my planes.. storage is a challenge) Here is a flight video  https://www.youtube.com/watch?v=YPAsXsSOFqg&t=8s