Rahul's RC Aircraft and other designs

 Based on Loki.. and offsprings are bigger and better 😀 It is hotwired EPS foam vacuum bagged with fiberglass, CF .. It has a 16mm UD CF tape laid on top and bottom surface acting as a built-up spar. Dimensions   Airfoil :- TL16 110% thickness Initial CG (@7% SM) is at 20cm from LE apex Highlights 1. It has a 3x1mm CF strip slotted and epoxied into the LE...  prevent dinks 2. The bottom hinged elevons also have a top mylar gap seal ...  reduce drag  3. The servos, servo horn and push rods are embedded and completely enclosed within the wing. The  push rods run through tunnels with the wing, and come out just near the TE ..... reduce drag. 4. The battery and electronics are aligned longitudinally in the center of the fuselage top. It is just a 5cm strip.... keeping maximum surface of the wing clean for lift .. and reduces drag. 5. The vertical fins are 2mm balsa , carbon fiber, fiber glass composite . They are strong/rigid, light, and thin...... less d...

 Hot wire cutting of wing out of EPS, XPS, EPP The details/wisdom of how to cut wing cores out of foam (different variety) is captured below The Bow There are many method of making a bow.. the essential points while making one are 1. Should be easy (light) to use.. the feel of  balance  while holding it will ensure good cuts 2. Should be long enough so it is able to cut the required pieces.. You may require more than one bow for your different needs  3. It is essential that the hot wire is very taunt while cutting... it is good to have some method of  controlling/ tightening the tension applied to the wire. I simply add more twist/turns to the tensioning cord to shorten its length which stretches the lower part of the legs and stretches the cutting wire 4. The cutting wire needs to be hot enough, be thin, and should be able to be stretched taunt .. I use thin ss wire and some times a the thinnest guitar string. 5. Any safe DC/AC power supply @ 30V and 5A should ...

A 1m  Thermal flying wing - Plank Dimensions and details :-             Electronics       a.        Motor = 2206 200KV b.        Prop = 7x4 folding c.        Bty = 2S  750/1000 mah d.        ESC = 30A 8.        AUW = 310g,  Wing area = 220000 sq mm, Wing Loading - 4.65 oz/sq ft, Wing cubic loading - 3 The wing is hotwired from EPS (Thermocole). It has a built-up 10mm CF tow spar  and skinned with 32 gsm fiberglass at 45 degree  bias. the wing tips are EPP . The fuselage is only in the front portion to house the ESC, RX, Motor and battery.. The vertical tail is stuck on a 3 mm CF rod and glued to the wing TE. The elevon is 3mm balsa sanded to a thin TE. The elevon is bottom hinged In the final version, the servos were moved inwards and positioned at the...