dancing kites [two or more
kites flying same circle or other figure from a lofted central point
from which main tether begins downward journey; this saves the main
long tether from sweeping and subsequent costing drag from such sweep. Rotokite
is an instance. Also, see the record of fighter
kites dancing from one main tether (video above). Think
coteries, flowers, branching, bifurcations, trifurcations,
quadfurcations. Also, consider following the kite
arches with branches that in each branch could have dancing kite
complexes from the arch; see KiteLab for some
developments therein. See Peter R. Payne patent drawings
(filed in 1975).
Click image for full instruction.
Also, see Moritz Diehl where he points out that
"absolute line drag is reduced, as only short lines move fast in cross
wind direction" and "centrifugal forces "become our friends" and" curve
flying does not
generate losses anymore. Kite masses can be higher. Kites can
compensate each other during retraction, without lift control. Get 14
kW per square meter wing, 40% better than single kites!" p. 28 of
SourceHere. See also:
Community is invited to advance the "dancing kite" file for
M2699 and its following posts. See also:
M2704 and its following posts.
DTE, DT&E, Development, test, and
Development, Test & Evaluation , etc.
This kind of wood has been mentioned in some kite plans. Our
note here is not a recommendation, but a support for reading some
historical kite plans. There is a note also that talks about
timber grading and sections of cut log where a "deal section" is
deal or ‘red’ if imported from Europe (northern UK); yellow deal or
‘yellow’ (southern UK). Timber grownin
the UK is called Scots pine. Baltic, Finnish, Swedish, Polish etc.,redwood
or yellow deal according to country of
dealers, smallAWECS dealer, largeAWECS dealer,
death comet :: "Death-Comet :: An
unreliable high-mass high-speed kite"
destructive kites war kites
military kites defense kites
This is antipolar to liberational
deformable wing, deformable kite wing, deformable
kites Discuss soft kites, limp kites, cloth
kites. Consider against "rigid"
wings for kite systems. Consider "morphable" wings for kite systems.
and his effective climb into the air with some assistance ...
degrees of freedom (DOF) "motions
of "hunting" dynamics in six degrees-of-freedom (pitch, roll, yaw,
heave, sway, surge), that all kites naturally display, in varied
proportions." ~ Dave Santos (DaveS), CTO, kPower, Inc.,
Nov. 8, 2016. Source: Message 21166
DFRC Dryden Flight Research
... a NASA center in California Home
Kite ... a
Rogallo hang glider stiffening the Rogallo Wing in an adaptation to the
near-standard wing built by Ryan Aeronautical following the conferences
and communications and associated leadership of Francis M. Rogallo
within NASA. The tinkerer builder operated in 1963-1968 with
a few versions from rough kite to finished aqua-glider. Others before
that kite-glider demonstrated all the mechanical arts involved. A
concerted effort by a beloved friend of Dickenson bullied unearned
accolades that had text strictly contrary to face; such sparked a
sharpening of hang gliding history; but the bully retains a mammoth
text that exhibits a huge non-sequitur that tries
to have overclaim ride associatively with acceptable facts.
diedral, variant of dihedral
Diem, historian: Walter Diem's Lost Golden Age of
"Wetterdrachen" (Weather Kites)
differential line actuator
oscillation. When kiting, the moving driving ground resistive
set may have motions, accelerations, changes of motion texture, etc.
that might induced oscillations in the tether set and the wing set of a
a kite system.
Dirigible kite-drawn buoy by Prof. J. Woodbridge
is the buoy invented by Prof. J. Woodbridge Davis for conveying
messages, food, or life-lines between disabled vessels and the shore.
The buoy is drawn over the water by the kite-line, like the one shown
above, but the setting of the keel and the three guy-ropes give it
whatever direction is desired
KITE-BUOY IN SERVICE.
Dirty wind provides some niche AWE opportunities.
trawl door, a paravane (water-kite) that opens
trawl nets images
Doppler velocimetry (LDV), also known as laser Doppler
anemometry (LDA) is a technique for measuring the direction
and speed of fluids
(or any other material that is processed like metal, paper etc) like air
downplaning "he main canopy and the reserve
were beginning to interfere with each other. This is normal, but if it
isn't checked then there is a risk of downplaning - an undesirable
interplay between the glider and the reserve that results in an
accelerating descent rate"
down selection, down selecting
decision process that selects from options in order to move into
engineering management requirement to pare down the long list of AWES
ideas to only the most essential. A huge fog of brainstormed ideas now
hide golden core principles that will endure. It is nearing the time to
correctly choose, or lose."
Without down selecting there may be a tendency to
have "paralysis by analysis" where attention and investment is not
focused into a build-and-serve actuality. Holding out for "best" will
not practically serve practical needs.
Reduction in the number of contractors or
sub-contractors working on a project, as it moves from one phase to
another, in accordance with the criteria established usually in the
request for proposal (RFP) documents.
has its useful roles.
Zero drag for a body moving through another body might
not be possible.
However, explore quantum hydrodynamics, superfluidity, and
superconductivity as part of an exploration of related boundary
Dryden Flight Research Center
... a NASA center in California Home
Dave Santos, aka DaveS, often
DS dynamic soaring
doing dynamic soaring
surface (hang gliders, kites,
airfoil) as opposed to SS or single-surfaced membrane airfoils. Perhaps
more properly: double-skinned (DS), as a single skin (SS) has a top and
lower surface. Count the skins or covers.
Inverse of DS or dynamic soaring might be DP- Dynamic
soaring glider wind turbine (DSGWT). Dynamically soaring
gliders with RATs onboard. See also DSUTWP (dynamic
soaring un-tethered wind power plants). Developing discussion
is occurring in group AirborneWindEnergy.
DSM (in full
Koninklijke DSM N.V., or Royal DSM N.V.) is a multinational chemical
DSM Dyneema is the inventor
and manufacturer of Dyneema
ultra-strong fiber. This fiber, based on ultra high molecular weight
polyethylene (UHMwPE), is used in many applications in various
end-markets, such as life protection, shipping, fishing, offshore,
sailing, medical and textiles.
DT&E, Development, test, and
Development, Test & Evaluate , etc.
wings, of tethers, of control surfaces, etc. can be damaging or
productive of assets. Whole AWECS may feature dynamic oscillating
wings. Faired tethers may set up dynamic oscillations and subsequent
drag; but the wingmills of KiteLab by Dave Santos use dynamic
oscillation to good effect for generating useful wind-energy
-A computer controlled system to automatically maintain a ship’s
position and heading by using her own propellers and