Wind Inflated Structures (persistent-inflation in calm)
Keep in mind that the following applies to airborne architecture (not just
ground structure), even if the structure is forced to land by calm:
Problem: We often consider the wonderful future for simple wind-inflated
structures. So that they do not promptly sag in still-air, a simple
passive means of keeping form is needed.
Solution: Systematic use of one-way valve ram-air inlets, with low-loss
pressure-stages (airbeams) pumped up during wind, such that when the wind
dies, low-loss airbeam networks maintain structural shape for a suitable
period. Note that absence of windloads allows small restorative airbeam
forces to keep shape. Return of the wind renews the persistent pressure
reserve. A small blower would do as a rarely needed back up.
An old idea, perhaps never yet done, is to create a large simple
wind-driven low-pressure air pump made of light fabric, self-oscillating,
like a big inflated beating heart, as a cool soft-kite idea. Fluidic logic
applies. A basic "air-diode" method is a tapered cone of fabric that acts
somewhat like a heart valve. The cone is a small Venturi intake that
enhances forward flow, backflow is resisted. For a full one way valve
effect, a flapper-valve or cone-collapse method can be chosen. Embodied
logic is a cool extension of computer science.
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:
Mothras will create a
nice bow-wave for gliders to operate (like slope-lift). Imagine a
"townhouse" row in a vast arch kite, with parked gliders launching
into lift :)
Wind-Architecture concepts by glider pilots-
----- Forwarded Message -----
<email@example.com>; Pere H. Casellas <firstname.lastname@example.org>
September 22, 2013 10:44 AM
Inflatable Dune? Who?
Yeasrs ago in OZ Report and in my sites we were
brainstorming on various fences for flatland slope
soaring of hang gliders. Some pilots have shown that it
does not take much of a wall or fence placed
approximated perpendicular to the wind to form a lift
zone adequate for slope soaring a hang glider. Travel
from city to city? Etc. Excited about the discussion
and various fences (like Running
Fence by Christo and Jeanne-Claude). We got
into kite-lifted play sails with extremely long width,
positively-inflated tubes, etc. Pere Casellas drew up
the ram-air inflated fence or artificial hill or slope
which you see. http://www.laboratoridenvol.com/
is his site. Pere is copied for this reply.
We covered the idea that landscapes might be sculpted
to provide regular slop soaring to facilitate travel
of people and goods.
Lift for all,