Flying Wing 45" - Build log

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Hotwired foam Flying wing - 45" ~~ 114.5 cms
Airfoil : MH64
Span : 114
Root Cord : 30.5
Tip Cord : 23.5
Twist : -1.7 degrees

This is hot wired out of expanded polystyrene. It done in the single template method,  with one end of the wire anchored


Tips had -1.5 degrees of twist

Below is one of the cores after the cutting . it has come out very good . the template is still fixed to the core
  the core without the template. Note the cord line


the  calculations are

Pictures of the finished wing

Motor - 2230 1780KV
ESC- 30 amps.. I do not have a lower rating ESC.. the max current draw on rig is 9.5 amps
Prop - 6X3
AUW : 400 gms.. including 1000mah 3S bty

-The wing has one 1mm X 3mm flat spar, running full lenght and one cross 3 mm joining spar
-The motor mount is made out of coro and balsa
- ailerons are balsa 1.75"
- Wing is covered with tracing paper.. the paper is pasted with 50% white PVA glue thinned with 50% water. .. the paper is soaked with water for shrink tightness .. Upon drying this acts as a covering under tension and gives huge stiffness

The top part is the hatch covering the bty and RX.. the Bty and RX place holders have been carved out in the foam







Flight.

the first flight showed that the calculated CG was well behind the actual.. hence nose weight was required. Also the thrust angle was off which was corrected






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