Easy Megascale-Arch Belay-Rotation
Circular Track and Carousel Kite Farm surface
concepts are conceptual competitors to KiteLab's Anchor-Circle
Belay-Rotation method. Obviously, an anchor-circle is far cheaper and
faster to deploy, with far less environmental impact from embodied
material and land disturbance.
Tracks and carousels still promised a narrow operational advantage, the
apparent ease of rotation of a kite arch formation. The early circle-belay
method was shown to be workable (Mothra1), but even with a depower input,
required powerful winching to haul the leading side of the arch to
windward. While powerful belay winches were but a fraction of the capital
expense of a carousel or track, they would still have been a major capital
item. With the new method described here, such winches are not needed.
Lately, Mothra arches have developed a second set of load-paths that
converge on the center of the anchor circle. These new loadpaths enable
monolithic loads to be lifted with well distributed forces, or the power
outputs of many WECS to converge at one center point.
A centerpoint anchor therefore enables an entire arch to rotate
semi-passively to match wind direction, much like a single-anchor kite.
All that is required is to slack the side-lines so the arch rotates
briefly from the center anchor. Once rotation is completed, the side-lines
are re-tensioned to once again act as deterministic stabilizers, and
Brief depower-repower of the arch would be a refinement of the method. No
massive belay winches would be needed. The new load paths contribute to
the working-load safety-factor (8 to 1) and are fully able to take the
full ordinary load of the arch (at a 4 to 1 safety margin, with the slack
sidelines as "preventers").
This new Easy-Belay method seems to be the last key solution needed for
optimal kite-farms based on megascale kite arches flown from anchor
circles (or "anchor-fields"). It will be tested and perfected in upcoming
small-scale sessions. The idea is a natural extension of the offshore
rotating arch method JoeF recently identified (single-point deep-submerged
Comment and development of this topic will be occurring here.
All, send notes, links, drawings, papers, videos, plans, safety-critical
findings, and photographs!
- Terms and aspects:
- Related links and concepts:
- Commentary is welcome: