Kloudet (oz3260)

About this Plan

Kloudet. Flying wing design for 0.75-1cc motors.

Quote: "IT has always been my ambition to beat a conventional contest model with an unorthodox type, and with this in mind I turned my thoughts to a powered flying wing design. Having produced several different 'wing' designs at intervals over the past 15 years, I checked snapshots and sketches and finally settled for the machine presented here. That the design is successful is borne out by the fact that on its first outing it managed to take fourth place in a 1/2A contest. On the same day it disappeared o.o.s but was recovered some time later. Although it has yet to take a first place at a contest, it has always been well in the running.

The original model is quite heavy at 12-1/2 oz, using a Mills 0.75 and a Stant 7 x 4 prop put on backwards and turning clockwise as a pusher, but by keeping the weight down to around `10 oz by using light, firm wood one will have a potential winner in the 1/2A class - and if thermals are around, get ready for a chase. I do not have a D/T on the original.

Before starting construction, study the plans and get an idea of the sequence of construction. Make full size stiff paper templates of all parts, trace on to balsa and cut out ready for assembly. Soap or wax the plans and then start building.

Pin down the 1/4 in sq leading edge flat on the plan, also the trailing edges. Cement with a butt joint the 3/16 x 1/2 in elevon TE pieces. These are flat on the plan where they join the main TE but are raised 5/16 at the wing tip. This gives built-in washout which is necessary on a flying wing for stability.

Cement all ribs in position. Now pin the upper 1/8 sq spars in position on top of the ribs and mark where the slots are to be cut. We prefer to do it this way as it ensures absolute accuracy in aligning the spars. Cut out the upper slots and cement the spars in position. Notice that no spars run across the centre section.

The leading edge sheeting and capping strips may now be cemented on. When dry, remove all pins holding down the outer panels but leave the centre section pinned down. Score cut the trailing edge of the centre section where indicated on the plan..."

Supplementary file notes

Planfile includes article.

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