launches international contest:
Sponsors of contest and of prizes are invited. Contact AWEIA.
This CKC is for advanced seasoned aero/kite people, not for the timid
beginner; there is high opportunity for satisfaction, but also for
discouraging experience. If one can tolerate much approximate success
before reaching golden moments then the CKC might be for a gem. If
designing, building, and well flying a kite is already in your background
and want a creative challenge, then CKC contest might be for you. CKC
concerns human powering a kite without running outside a small ground
start circle; but CKC is strongly about craft design, so that a narrow window of
mechanical opportunity might be entered. Two strong seasoned kite
engineers have cautioned against presenting CKC contest to school
children, as too much non-flying is very likely; good flying will be
allusive until sweet designs and operation tactics are perfected.
Few people have succeeded in standing in a confined circle in calm while
launching and flying a kite for more than a few seconds; CKC is aiming for
durations of minutes and even hours.
thermals in his "no wind" scenarios, but CKC contest disallows thermals in
the trials for prizes. The CKC contest is yet in a design-contest
period; open discussion on all points is invited.
Many kiters have already experienced some no-wind kiting in the
- Of course, those doing indoor kiting are doing some no-wind
kiting. Even so, most indoor kiting showcases obtaining duration by
walking, running, or dancing of the pilot in combination with relatively
short tether lines. And some of the pilots get familiar with indoor
drafts, indoor kite wakes, and vortices caused caused by body and kite
- Kiters who have a high flying kite might winch in kited wing through
a wind gradient where a strata of the air is calm. While the
kite is in that calm, the pilot has the choice to gather the tether or
run the tether to attain some kiting continuation. Indeed, near the
ground there might be near full calm after a windy flying session; in
that near-ground calm one might reel in the kite all the way to hand by
creating airspeed over the kite's wing by virtue of the reeling in or
walking or running. The common experience in entering the lower
calm is an expectation that very soon the flying session will end,
unless one runs and runs and runs. One might be tempted to
get into lighter-than-air gases to keep the kytoon up. The
CKC contest aims expose options for sustaining flight in calms.
CalmKite™ , Calm Kite™,
ClimbingKite™, KlimbingKite™, Klimbing
Kite™ , KalmKite™ , Kalm Kite™ , HPKite™,
Human-powered Kite™, H. P. Kite™
File started January 25, 2011
Climbing Kites in Calm. Calm Kiting Climb contest: (CKC)
Toward Calm AWECS Management
Task summary: Get
it high in full calm from small operating circle!
being restricted to ground operations within a circle of , say, 5 m. Have
all operations that are ground-touching be done only within that circle.
Assume no wind and no thermals, like quiet calm indoor air. Without pilot
or robot leaving the circle and starting with kite's lifting body and
tether in the circle for start also: fly the kite to a record altitude; see draft
rules below. NOTICE: Following the start, the lifting body and tether may
certainly go beyond the circle, but without touching the ground or getting
auxiliary outside-circle assists; the human pilot or robot may not leave
the circle. Send in results and specifications for publication in
Some gains upon wide sharing of successful designs
- Those who choose to fly kites in calms and do not want to run much
will have choices.
- Those who do not have legs for running and choose to fly kites in
calms will have choices.
- The found tactics will affect the operation of some AWECS upon calms
or inadequate winds.
- Aeronautics will be advanced in some corners.
- Some kiting tasks normally needing wind may be accomplished in
- Some participants will gain an increased appreciation of updrafts
and downdrafts and various windfield vortex structures. Absolute calm is
probably not realistic. Measuring degrees of calm near
absolute calm may advance during the CKC contest run.
- Calm-confirmation instrumentation might advance. It will be
asked and observed: "Just how calm was it for a certain
- Indoor kiting will be modified by the widened set of designs and
operation tactics revealed during the CKC contest.
- Kite quivers will increasingly hold kites that can fly in calms.
- Some new practical applications will open to those equipped with
no-wind kites and calm-kiting skills.
- Jan. 25, 2011: "We will definitely
win that contest with the new hardware I'm designing ;-)"
- Jan. 25, 2011: "Reinhart, I think I have something going
that will get higher than your hardware for the contest here!"
~~JoeF Jan. 27, 2011: "But
lo! I am organizationally disallowed from winning prize
money in CKC contest, but I will enter my specifications and observed results for tech
share purpose. It will be exciting to see your reports; I hope you will
get it higher than I do, as that will be quite high!
Rules include (suggestions
for rules are invited):
- Operate in full calm. Have no benefit of thermals. This atmospheric
condition may have to be sought carefully to avoid wind or thermal-lift
assistance. Some special conditions and some mornings before sunrise
come to mind. Large indoor arenas come to mind, but the ceiling may
limit attainments. Neutral observers would be great to sign off on
- Firmly: The tether and wing starts in the circle, but then
those parts may go beyond the circle while the pilot (human or robot)
remain in the start circle.
This is not a "go-straight-up" contest. However, going
straight up is allowed.
- Discussion in draft
period is needed on these matters: Have no powered motor on the kite's lifting body or its tether,
except such is allowed at the mooring point within the restricted
circle. Elastics and springs may be on the wing, but such may not be
loaded with potential energy until the wing is already in the flying
mode. We want to avoid such things as solar-powered motoring.
It is wanted that tether tugs be allowed to give both signal and energy
to the wing, but without using electricity sent from ground for motored
flight (else could result simply a wire-controlled electrically-powered
aircraft, which is not the intent of the CKC contest). But what
about letting tugs and jerks of tether given energy so that a wing-based
generator reacts to give electricity for storage at the wing for use in
controls that might direct the gliding path or angle of attack of the
wing during the trial? The wing is flown fully unpowered except by
the power of tether tugs and jerks (no pun intended for the human
operators!); could the contest permit inventors/designers to have
devices to convert tug and jerk energies to electricity for use in
controls or even direct propulsion? How would that be so different from
just using a conductive tether and sending electricity up to the wing
for control and propulsion? Big difference: contest does not permit
electrically conductive tethers; such would be a different game with a
different safety environment. If a robot is used
to tug, jerk, or rotate, then something is powering the robot.
Food is powering the human pilot.
- Is sending chemicals up the tether allowed? No chemicals or
gases are permitted to be sent up inside or outside the tether to the
wing for control or propulsion. Example: A hollow tether is not to
be a conduit for pressurized air for controlling or propelling the wing.
This is similar to not sending electricity or light up the tether to
control or power the wing.
- Accumulators? No electrochemical batteries or capacitors
will be on the wing or tether.
- What if a capacitor is charged after the start of the trial by way
of effects from tether tugging, jerking, twist, movement of mooring base
within the operations circle, or the flight of wing by mining the
relative wind from the wing's motion in the calm? Someone
might want to have tether tug or jerk energy operate a generator in the
wing while saving generated energy for smart controls of the wing or for
propulsion; this may be great fun or useful in some AWECS, however, the
CKC will stay with a focus that does not have accumulators aloft.
Someone might want to have energy mined aloft post-start to energized a
radio receiver with intent of operator on ground to control flight or
for powering a smart robot in the wing; will such be allowed?
Discuss, please. First notions are to keep such neat machinations
outside of the CKC contest. Maybe there could be categories
with prizes in each category.
- Then what about loading elastics or springs for accumulating energy
for strategic use to effect flight? A system might aim to have a
post-start accumulation of energy in the form of a spring or elastic;
the energy might be used during relaxed main tether and during glide
segments. Will such device be allowed for winning prizes? Such strategy
can be discussed in this draft period.
- It is to be noted that tugging, jerking, or twisting of the
tether may be used to control the flight path of the wing. But notice
that the aim of CKC is to increase get the wing to increasing altitude
which is equivalent to increasing the potential energy of the wing
relative to the center of the earth. And we notice that some
strategies will put some of that potential energy to play during the
trial, like in using some of that potential energy or altitude to effect
a glide of the wing during which glide some additional tether may be let
out (without letting the tether touch the ground!)
- Power the climb after initial toss only by tether controls.
- CKC first event will disallow use of shock-tube tethers.
- Why have that the tether "not touch the ground" outside
the operation start circle at any time during the trial? What difference
would that be than if some touching were allowed? Please
discuss this matter during this rule drafting time period. Letting
the wing or tether touch the ground after trial start might make the
contest nearly trivial, as full glide-outs would easily permit tether
let-outs followed by fresh reeling in for flight up. Also, if
accumulators are permitted and touching of ground, then the accumulated
energy might be used to roll or walk the wing on the ground away from
mooring for increasing tether length. Such games may well be fun
directions for other games and competitions or for specific new
categories of action. Discuss?
- The operation has the
lifting body ever off the ground during the trial.
- The tether may not touch the
ground during the trial.
- No beam or rod or stick or arm may go outside the operating ground
- Beams or rod or stick or arm may reach skyward as much as the start
circle's diameter, in suggested 5 m circle, the skyward reach would be 5
- Robot may jerk, rotate, dance, or whatever. Same for human pilot.
- Have no blowers on the ground or air.
- Combustion is outside the aims of the CKC focus.
- The wing part of the kite system is always to be connected to the
system's tether set and also always to be connected to the system's
ground mooring point (human pilot or robot in the ground circle.
- The ground circle is to be a fixed ground circle or a fixed-anchor
water-surface platform. That is, the CKC contest avoids moving operation
circle; we do not want the circle to be on the deck of a moving truck or
boat or train, etc.; that is a different game with valuable things to
explore for AWECS, but such moving moorings is not the CKC game.
The pilot (human or robot) may move about within the circle, but not
outside the fixed circle. The circle is to remain geographically fixed
during the trial.
- Tether may be a torque tube
or torque cable for driving a rotary lifting body.
- The tether may not conduct electricity or light-for-powering during the climbing activity.
- Light may be tether transferred, but not for control or propulsive
purposes. Perhaps someone will have a tether that transmits light to
illuminate the position of the wing and the tether for aviation safety,
visual identification, entertainment, etc. However,
the CKC contest avoids controlling the wing or propelling the wing by
using light (thus solar-energy, power beaming, or tether-carried light
for control or propulsion are beyond the CKC game. Exception: A
demonstration that uses a robot may power the robot by use of any power
system desired; e.g. a robot might be solar-energy powered while the
robot may only affect the kite system by way of tugs, jerks, rotations,
twists, or input of light (only for said non-control and non-propulsive
reasons, if wanted).
- Have no initial stored energy in the lifting body or tether. Notice
that any successful tossing or flying of the wing to higher heights does
give the lifted mass additional potential energy; also, the wing body
moved by tugs obtains kinetic energy relative to the calm air; a
relative wind is created as the wing body moves through the air by
falling or is moved through the air by tether tugging.
- The kite system employed may
not employ lighter-than-air gases and may not depend on solar-heated air
- Do not employ light or solar radiation or lasers or microwave beams to power any motor in the
system. That is, sending light in an optical tether pipe is
another game. Also, power beaming energy to receptors on the
wing or tether is also a different game. These different games are
interesting, but the CKC contest is aiming to have a rule set that
distinguishes itself from some of those games.
- The lifting body may be
tethered by multiple lines going to the start circle.
- The human pilot or ground robot may operate the tether. An initial
toss by hand or robot may launch the lifting body with some tether.
Following the initial toss, the human pilot or robot may operate the
tether to affect the behavior of the lifting body of the kite system.
The robot toss may not exceed the force that a human pilot could exert
(this is to avoid robot cannons of unlimited shooting power, etc. )
- Publish specifications for success. Tell the net altitude above
level of start circle reached. Tell the length of tether. Tell the time
it took from start to peak altitude. Specify kite and tether materials
and design. As possible couple with an engineer or physicist for a
technical analysis of the flight pattern and cause of success reached.
Aim to describe the theoretical limits of altitude AGL achievable by the
specified system. Express how such a system might be used to launch
AWECS or to maintain AWECS aloft in calms or wind direction reversals.
- Show video on YouTube.
- The CKC will be without radio control (RC)
devices from ground to wing or tether. RC
- Disallowed from winning prize money: JoeF or members of his
- All things start in the
circle; then the flying body and tether may go beyond the circle, but
not the operator. After start, the tether or lifting flying body or wing is not
to touch the ground during the effort; the tether or wing is not to get beyond-circle assists.
- Gravity may be employed to
effect gliding of the involved wing while the tether remains fully
attached to the wing.
dynamics: twist, torque, tugs, jerks, rate and strength of
tubs and jerks. Operator may twist the tether in order to
send some torque to the kite for controls or propulsion. Operator
may tug and jerk at any frequency chosen at any time during the trial.
Operator my relax tether tension very fully or increase tension of
tether very much at any time during the trial.
- Decision of the CKC judge
set is final. The CKC Judge Set consists of 3 or 5 or 7 persons.
Majority vote on a decision confirms. Judges have not yet
- Questions are invited.
Tactics and devices that are not clearly mentioned in the rules could be
discussed at any time.
- [ ] Coming: some notes by
Wayne German (<=AWE forum only) and discussion by JoeF.
- Establish world records for a particular specification for defined constraints.
- We are looking for prizes to award. Offers are invited.
Substantial prizes bring logo-link presence in the contest file realm.
- Direct competitions in some localities?
- Predictive challenge expressions are welcome.
- This contest has a focus beyond kite dance or general zero-wind
kiting. The focus is on extreme altitude gain under the constraints.
- Judge committee members? Volunteers are invited.
- Constrained-circle-calm-climbing-kite contest
- Consider the theoretical limits of applying the matters found
in the following study of one method:
"Kurt Geebelen and Joris Gilis did their master thesis on this topic
As far as I know, that is the only really interesting document about
that (so far ;-);
the Leuven team is working hard !
Greetings from Leuven" ~Reinhart
- What are known world records for such an activity at this time?
- What are the several tactics? We will accumulate
community notes in this folder.
- Toss, oscillating tug with allowance for rotary gliding cycles
Kurt Geebelen and Joris Gilis method
- Rotary pull with angle of attack controls
- Faust method: Tug up followed by glide back along same line; craft
specially designed to perform for the method.
- Be sure to study Horvath; however, notice that the high-start tactic
and thermal use is beyond the CKC contest focus, though fun tactics
otherwise. See links below for the Swiss kite lab.
- A claim is made, but just how high may a kite be lifted following
the above rules:
- Kiting in no wind: what are the extreme possible achievements?
Windless kiting. Of course, one may run, run, run, run, ... But
what else? Varieties of indoor kiting events occur, but
rules differ some from the above rule set.
Alan Flying Zero
Wind Kite .Thomas K Horvath, Hybrid 200
Ede & Horvath
Kite soaring in
Zero 1.1 von Thomas
Long Beach 2008
Windless Kite Festival
Indoor kite tricks
Training in Dortmund, Germany
- wiki: Indoor
Talent - Connor Doran - Indoor Kite Flying
Art of the Air,
Indoor Kite Flying Performace by GuildWorks (sic)
- Stacked triple quadline:
Quadline Kite - Indoor kite flying Plasma stack of
WOW Air and Space
Museum Indoor Kite Fly
- For a note on equatorial calms:
The Intertropical Convergence Zone Upper Wind Resource
Horvath : Synergetic kite:
Consider carefully the active kites
of Horvath and his experiences. Be aware of
thermal use or not in his descriptions.
[Ed: Without thermals
and with the operations-circle constraint of CKC, then how high
could one get with the Horvath kites and tactics?]
Categories at the Swiss kite lab:
- "zerowind kites" zero-wind kites
Several Horvath indoor flight videos.
- The Horvath design and tactic directions are very helpful.
Yet look to other design solutions also.
- Other kite designs are possible for the CKC solution space.
- The CKC contest involves human-powering (or robot-powering)
specialized kites; the energy goes through the tether and results in
movements of the kite; some of the movement will be up for an increase
of potential energy of the wing; some of that potential energy will be
used in glides, either in fly-aways, spins, circles, or returns.
For the CKC, avoid thermals, but at other times enjoy the lift of
- swiss kite lab™
the branch glider kites for the CKC contest.
indoor kite flying with airplane glider
Jan. 26, 2011 edited. Jan. 27.
Calm .... No wind. Quiet. No leaves moving. No dust being blown about. The
sunrise has not heated the ground and things yet in pre-sunrise, and so
bubbles of air are not being heated and moved upward as thermals. Not a
time to fly kites, unless one wanted to either run very much or do the
moderate-length-line kiting that is being developed in "indoor kiting"
some of which with music and dance can be a beautiful art; see some of
But beyond that, there is a window of opportunity that is the
subject of the contest being designed and will be developed. There may
be at least two, if not more, tactics that may permit achieving high
altitude in zero-wind without running or lighter-than-air gas use, that is, by staying within a small
circle and manipulating the tether for specially designed kites within a
rule set. And do
such calm kiting without any motor or stored fuel on the upper kite craft
or its tether. Notice: After start, the wing and tether projections to
ground may certainly leave the start circle.
of extreme altitude gain under such rules are not known here yet, if someone has gone through the window of
opportunity to extreme. The contest aims to develop and expose the
opportunity. CKC under AWEIA hopes to attract prize money. A full description of
the involved physics and techniques that may become known would advance
kiting and AWE. Success should affect the AWE movement also,
as we want kite energy devices to stay up when calm occasionally occurs or
launch in calm to get up to effective start winds.
Thanks for the tickle,
CLARIFICATION about the vertical projection on the ground of wing
and tether outside the start circle and
not requiring straight-up flight.
On Thu, Jan 27, 2011
at 10:20 AM, dave santos wrote:
Keep in mind that this is a very tricky challenge and most who try must fail
for lack of skills and knowledge. It would stump most aerospace students.
A principle in school activities is for all students to get satisfaction,
even if some are better. The basic kite is the prime example of an ideal
One of your hard rules is going straight up, it may be that circling up is
the right way, far easier.
[[Ed: See rule set that
now clarifies that "straight up"
required; that is, during climb, the vertical
projection onto ground by the tether and wing may certainly be outside the
start and operating circle.]]
Even so, this is not for beginners. One design mistake and forget it.
Still, this is a major aviation problem. Maybe a contest would help solve
it, nevermind the struggles of running contests,
That is why we are in draft rule stage. The upper
notice now reads:
Consider being restricted to ground operations with a circle of , say, 5
m. Have all operations that are ground-touching be done only within
that circle. Assume no wind and no thermals, like quiet calm indoor air.
Without pilot or robot leaving the circle and starting with kite's lifting
body and tether in the circle for start also: fly the kite to a
record altitude; see draft rules below. NOTICE: Following the start,
the lifting body and tether may certainly go beyond
the circle; the human pilot or robot may not leave the
So, DaveS, this CKC is
than "straight up" effort. The projection of the tether and lifting body
certainly may go beyond the constraining start circle, but not the mooring
human operator or robot. Any kite can succeed to get some altitude just by
the start toss.
start in the circle; then the flying body and tether may go beyond the
circle, but not the operator. After start, the tether or wing craft is not
to touch the ground during the effort.
- "no wind" "zero
- Some practitioners say "no wind" when there is no
horizontal wind while they sneak in use of vertical updrafts or thermals
or vertical downdrafts. So, their "no wind" still has wind. Mining the
energy of updrafts and downdrafts is using wind.
- Full calm with no appreciable movement of air in
any direction (oblique, up, down, around, horizontal) is very rare;
so there are degrees of calm.
- "no-wind kiting" is understood by Horvath as allowing
thermals. But the AWEIA calm kiting
climbing (CKC) contest intends for "no-wind kiting" to mean that
there is not occurring updraft or downdraft winds in addition to no
horizontal or oblique winds.
- Discussion is open on this
or any entry in the AWE Glossary