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Re: The 5 ft-packed-HG Movement

Postby JoeF » Wed Sep 08, 2021 3:38 am

I was awakened by a progress note:
Yes333GroundClothSept8of2021Wing5.png
Yes333GroundClothSept8of2021Wing5.png (23.24 KiB) Viewed 99 times


Stick-like items to form inner bundle: (each item: 48 inches or shorter)
:arrow: keel made of 2 parts
:arrow: kingpost made up of 2 parts (aka: HH mast)
:arrow: 2 HH wings (high hat wings are small)
:arrow: 12 or more parts for mid-semi-wing ribs, two parts make each rib
:arrow: 6 or more rib struts (single part per strut) for mid-semi-wing support of ribs (torsion transmitters)
:arrow: 4 parts to make up two tip ribs
:arrow: Several compression elements
:arrow: 2 rig rings (possibly made of parts) {or not such parts}
:arrow: 6 parts for TCF (triangle-control frame), unless 48" side beams suffice, in which case: 3 parts, not 6.
:arrow: Some TE flattish items, perhaps
:arrow: 3-ft-long narrow-profile bags of lines, labeled.

Long wrappable parts:
:arrow: Upper-sail fore strip folded over upper-sail aft strip (tolerate air-flow disturbance of the fold; but perhaps insert between the two strips the lower sail and the spar case in order maybe avoid sharp crease in the upper sail) (embedded rib pockets) {or, if fold crease is not wanted, then go to having two separate strips for upper sail}
:arrow: Lower sail (no folds)
:arrow: Spar case with bladder inside
:arrow: Ground cloth
======================

Back to sleep now: 4:08 a.m. :yawn: {{ Edit: Nope; did not get back to sleep ....}}

Secondary uses of the ground cloth (low oz/yd2 nylon ripstop)
:arrow: shade cloth. Shade sun, shade wind
:arrow: rest cloth
:arrow: play sail
:arrow: kited play sail
:arrow: privacy blind
:arrow: landing target
:arrow: :?: :idea:
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Re: The 5 ft-packed-HG Movement

Postby JoeF » Wed Sep 08, 2021 9:25 am

Re: Wing5-M1 or M2
This morning I bought a too-heavy spar case. The 18-oz/yd2 is used in making attraction party jumpers. I have such material, but what I have is dirty. What was just bought was a side-seamed 21-ft tube in yellow. I made the order super simple: 48" wide by 7 yards; sew twice in the 1" seam allowance straight; done. I will pick up the sewn tube between 5:00 p.m and 6:00 p.m.. I will seal the seam; and I will close the ends of the tube. I had the shop sew the one side long seam. I will cut the tube to 20 ft before closing the ends. I will seal the seam with a bead of silicon caulking and/or tape on the inside. The one-inch seam flap may be a foundation for connecting compression members.

I trust that the spar case I bought this morning could be sourced at HERE, but I am not recommending this material for HG spar case; no. Just an experiment. Far too heavy. That online source might later supply other choices; but it looks like they deal in specialty fabrics that are all too heavy for Wing5 iterations. My local shop buys at less, as they buy in bulk.

I will experiment with inflating the tube without a bladder; the material can be made air tight without an interior bladder. I will see how that goes; but I have coming a bladder that could be used to compare experiences. The 10 lb for the spar case is far heavier than I want. The shop has a 10-oz/yd2 in black that would make a 6-lb spar case; that would still be heavier than I want. I do not need the double-side-coated fabric that makes the attraction jumpers, but I want to experience the items for the general project. Black in the sun is not wanted: too hot. So, I might not ever buy their 10 oz/yd2 item.

Secondary uses of the eventual not-flight tubes can be made; exploring those secondary uses will be an adventure in itself. Fold in half, cinch the two ends together, inflate some; have a nice sofa for naps. Etc.

A second spar case of film will be for M1 or M2; a bladder will be used even though the fill could be airtight on its own, but getting the air-tightness might entail too much to do; that will be lighter, but the experience for flight will be different than with the above described 18-oz/yd2 material. I am guessing the film I have may be polycarbonate or polypropylene, not sure; the material was salvaged years ago from the same jumper shop's trash. Hard film; noisy. Not satisfactory, but I want to experience the material for spar making. I will eventually explore spar cases made from different films, fabrics, laminates ....

Eventual spar materials will be light and still resist buckling and torsion while not expanding much during inflation; they will be porous; the bladder will keep the pressurized air. Selection of future M? Wing5s spar case material is not matured. Will be learning much yet about spar case. Laminates might be in the deal. Bias effects? Laminate a net with Dyneema? What design of the net? Many adventures ahead ... I am aiming for 3 lb or less for spar-case. 4 oz/yd2 might satisfy; but that would be the base mark. I'm exploring many materials yet .... One direction: Here. Cuben Fiber, now called Dyneema Composite Fabric

Tube18ozYellowTooHeavySparCaseExperimentSep8of2021.png
Tube18ozYellowTooHeavySparCaseExperimentSep8of2021.png (20.5 KiB) Viewed 87 times
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Re: The 5 ft-packed-HG Movement

Postby JoeF » Wed Sep 08, 2021 2:09 pm

Wing5-M?? spar case option being studied:
Fabric Demo - 2.92 oz Dyneema® Composite Fabric Hybrid CT5K.18/wov.32c

for a spar case that would come in near 3 lb.
Special Cuben bonding tape seems to be a neat option.
This might also serve for sail material after some Wing5 iteration proves satisfactory for flight purpose. Not yet. Expensive material.
==================
Studying: https://www.hyperlitemountaingear.com/p ... uben-fiber
======================
Studying:

On some of his rehearse "cons" there is concern about tightness; spar case at 5 psi would be "tight" and such would be a concern for testing; he goes for tents with o.5 oz/yd2, but I am guessing for spar case in wing, I'd go for 1 oz or heavier. Adventures with Cuben Fiber or DCF...
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Re: The 5 ft-packed-HG Movement

Postby JoeF » Wed Sep 08, 2021 7:03 pm

Almost 10 times heavier than target weight:
18oz21ftPVCcoatedfabricFarHeavierThanEventualTargetSparCase500p.jpg
18oz21ftPVCcoatedfabricFarHeavierThanEventualTargetSparCase500p.jpg (175.74 KiB) Viewed 80 times

18oz21ftPVCcoatedfabricFarHeavierThanEventualTargetSparCaseSpread500p.jpg
18oz21ftPVCcoatedfabricFarHeavierThanEventualTargetSparCaseSpread500p.jpg (190.48 KiB) Viewed 80 times
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Re: The 5 ft-packed-HG Movement

Postby JoeF » Thu Sep 09, 2021 8:13 am

Wing5-Mx? spar-case inversion and detail work
Work to be done on the yellow too-heavy spar-case in order to explore getting non-bladder airtightness; a bladder may still also be explored for this too-heavy spar care:
:arrow: Tiny bead of silicon to seal just next to the first line of stitching.
:arrow: Single-sided tape over the cured silicon
:arrow: Heat seal the edge of the flange in the seam allowance. Explore my available tools: soldering iron, hot-knife, clothes iron. Move from craft immaturity to more maturity. Note needed tools.
:arrow: Closing the two ends of the tube. The ends will be closed to a flat straight line of about 24" in length. The design of the closing is to permit opening when wanted (but not each session, but only when special work on the interior of the tube is needed). An interior elastic foam stick will be squeezed by two sticks of wood or aluminum or carbon fiber; the two sticks will be pulled together squeezing the two layers of the tube and a flange of the elastic-foam stick. The pulling will be achieved by some method, perhaps among: a series of bolts, a series of string knotted loops, a string or wire stitching through a series of holes, ... The pulling or clamping will resist the inflation pressures. The tip rib will be tied to the tube-end-closing complex. I want to avoid heavy-sewing closing of the tube end, because cutting all that stitching to get back inside the tube would not be fun.

Invert a long tube. How? Methods? Wrestling...

Working on a long seam of a long fabric tube?
Sealing a sewn seam via various methods: Silicon? One-sided tape? Can a double-fabric seam be fused? Would'a could'a?

First experience with supplier was deliberately kept simple, short, easy; a simple sewn seam was asked and given. But in self-shop, fusion or double-sided bonding tape might have occurred for the seam. Remedial work will give lessons. The flange of material of the seam of the long tube may be silicon beaded, one-sided tape; the very edge of the flange might be heat sealed manually.

Not having a 20-ft cantilever tongue on which to set out the long tube (and not caring to build and store such jig), a short 4-ft jig will be moved along the tube's interior on a table or floor; the 4-ft jig or interior-of-tube mandrel will provide an opportunity to work on the tube's interior or exterior (invert tube for choice of working surface of the tube). The assistive mandrel will be smaller than the interior of the tube. the tube drapes over the mandrel; tension in the tube material may be obtained by use of clamps in various ways. A cord might pull the interior mandrel while the tube is stayed oppositely.

The involved experiences and gained lessons will enable the long-term wing-iteration production. It is anticipated that scores of HG wings will be built in order to find and materialize satisfactory Wing5 designs. Several branches of technologies are anticipated to reach satisfactory Wing5s.

Core global technologies to explore for small-pack air-framed HG:
:arrow: Splinted air-beam for spar, else other framing (this is the focus of M1 of Wing5 from my shop; other people may be working with a different technology for Wing5 or Wing4 or Wing3 or Wing2 or Wing1 solutions; others are welcome to post their progress on their Wing5, Wing4, Wing3, etc. HG wings) The "Wing4" has tote member of at most 4 feet. Etc. Wing1 allows that a diagonal of cube of 1 ft is longer than 1 ft.
:arrow: Deployable trusses
:arrow: Coilable-shells
:arrow: Tensegrity framing
:arrow: High-end telescopic beams in bow-wing format
:arrow: Standard framing with couplers, but no inflation members
:arrow: Inflatable without stick members. All beams are positively inflatables. (Distinguish from collapsible ram-air-inflated chambers as found in SS or DS PGs and Jalbert parafoil kites, gliders, parachutes)
:arrow: Memory forms (press closed; remove pressure and the structure returns)
:arrow: Bucket of self-assembling programmed widgets? Call out: "Assemble!" Watch the widgets assemble themselves into a HG. "Pack!" Watch the widgets work themselves down into the bucket.
:arrow: Ambient growth (go to flight sight; grow the wing from site-ambient materials; leave those materials at the site; carry no wing back-and-forth from home)
:arrow: :?: :idea: :?:

Stored wings; use no car, bus, train, or truck to transport a HG
:arrow: Many clubs have this sort of arrangement for some wings.
:arrow: The company at Dockweiler has a steel freight container that holds very many wings; those wings are not available when the company is closed; that company's container is not available to recreating pilots, except when the company makes a decision otherwise. Liabilities are involved in having storage containers at sites; the costs to have some storage compete with the costs of toting wings from homes.
:arrow: Storing wings close to a flight site, perhaps close enough where a foot-cart would succeed in getting the wing to launch.
:arrow: Hiding parts of a HG risks loss from theft, corrosion, trespassing fines, ... Hiding just long sticks at site, but carrying other parts from home? Hide sticks as pseudo-fence beams; take sail from home; grab the pseudo-fence posts to finish the frame of the HG? Telescoping beams .... hidden in pseudo flag pole at or near the flight site? Instead of a wire fence, have a thick fence with storage room inside the fence interior. Instead of the the block wall, have a hollow wall; store wings inside the follows; lock the wall cap. Store HGs inside hollow traffic curbs.
:arrow: Look to walk-near-flight-site neighborhoods and look for wing-storage opportunities shared. Rental spaces?
:arrow: Live walkably near flight site. Live at the launch site?
:arrow: Power fly the wing from home to HG launch site? Ever-up HG wing?
:arrow: Storing an object worth thousands of dollars without appropriate guards forms a magnet for thieves.
:arrow: :idea: :?:
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Re: The 5 ft-packed-HG Movement

Postby JoeF » Thu Sep 09, 2021 4:21 pm

Bladder note regarding TPU in other products
The two inflatable sofas that just arrived have been closely examined. They use about 12 ft of TPU tubing about the size I have been favoring. Two such sofas taken apart would net two segments of TPU bladder material; those two may be fused and closed with heat sealing. The other parts of the sofas involve some nylon ripstop and four plastic sticks, a webbing and plastic buckle. Simple. The sofa today turned out to be a terrific resting item, a great back exercising machine. Tip: the cloth storage bag could be tied to the sofa closure while the bag could be filled with sand to prevent the wind from carrying away the sofa; anchoring the item is a safety matter. There are no valves in the sofa; these are manual inflating devices. Product description did not spell out what material was used for the air cell, but by feel, sight, and some experience, it seems like TPU. And it seems the TPU is without seams, but raw blown state; the air tube goes for about 6 ft and then turns in buckling for another 6 ft, total of about 12 ft. I have not yet disassembled one. Valves may be installed in salvaged TPU tubes to make Wing5 bladders. Found lowest price: $15 each. I paid $17. Many offers are higher; beware.
sofaHoldsBladder.jpg
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============================================
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Re: The 5 ft-packed-HG Movement

Postby JoeF » Fri Sep 10, 2021 5:56 am

Bladder exploration:
???
NetSandwichFilm001.png
NetSandwichFilm001.png (80 KiB) Viewed 61 times

Explore sandwiching thin film (TPU, Saran Wrap, other...) between two layers of mosquito net or the like.
The net would give body to the bladder without much mass. Handling ruggedness of the bladder increases. Net stop "self-sticking" for the bladder. Bonding with minimal agent material would be a goal; care to use the minimum applied by roller to one side of the net. Cure. Test.
======================
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Re: The 5 ft-packed-HG Movement

Postby JoeF » Fri Sep 10, 2021 8:55 am

TwoSubPacksSept10of2021Wing5M1.png
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OnePack4ftoption.png
OnePack4ftoption.png (16 KiB) Viewed 51 times

PackOneWing5ofSep10of2021.png
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Keel2partsAsContainerBackpack.png
Keel2partsAsContainerBackpack.png (5.67 KiB) Viewed 50 times

Packing notes for Wing5-M1

Things are coming into focus on toted packs. Have the HG into two distinct sub packs seems to give many plusses.
:arrow: Long sticks: 10"x3"x4 ft ... can neatly backpack with no extending above head; this leaves room for walking without banging bottom of pack.
:arrow: Soft parts: 5"x2'x3' Appears as a piece of normal luggage. The 5" gives wrap radius for sail and spar case with bladder. The interior of the five inches by 24 inches by 36 inches can hold lines and other non-wing items.
:arrow: Bag for free hand holding flight session non-wing items and air pump.
:arrow: Wear harness and helmet. All-in-all the matters seems safe, doable, and with fairly normal appearance.

Option would be to wrap sails and spar case around the 3"x 10" cross-sectioned backpack; lines could also wrap or fit inside with the rigid long parts. Such would leave hands for non-wing items, air pump, food, water. During foot hiking, a small wheel set could be mounted at the bottom of the 4 ft length.

So, both hands will be occupied with reasonable holds.
A narrow backpack of 3" by 10" by 4-ft long will hug body and be hung so that walking heels will not bump into the bottom of the backpack. The 3 inches aft-going thickness will stay in good personal space.

Note: The above would qualify for "4-ft or less" and come within the view of the "5-ft" movement.
Note: Going to 5-ft for the backpack for rigid items remains an option. E.g., if M2 or M3 becomes 25-ft span, and sail part of 5 ft width, then it would be tempting to go to 5-ft for the backpack; in such case it would be tempting to have mid-semi-wing rings be 5 ft in a single piece instead of having two pieces make up those ribs. M1 will explore the 4-ft max-length for any rigid part.
Note: The backpack container could be one of the two parts of the keel; or both parts? Wrapping the spar case and sail around such container could soften the arrangement.

NoteCopyHereRePostedNotes
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Re: The 5 ft-packed-HG Movement

Postby JoeF » Sun Sep 12, 2021 7:00 am

Bow-string cambering embedded hinged ribs
SailEmbeddedFoldingRibBowStringCambering.png
SailEmbeddedFoldingRibBowStringCambering.png (23.07 KiB) Viewed 42 times
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Re: The 5 ft-packed-HG Movement

Postby JoeF » Sun Sep 12, 2021 12:11 pm

Option to the above method:
SailEmbeddedFoldingRibBowStringCamberingCouplerOption.png
SailEmbeddedFoldingRibBowStringCamberingCouplerOption.png (23.22 KiB) Viewed 37 times

Have various labeled couplers handy to explore reflex at rib stations.

Note: Ribs of two parts: the fore part may be pre-stressed to form camber, but be able in tote wrap to remain flat. The bow-string cambering is an option to use in fore cambering and in reflex shaping.
=====================================================================
=====================================================================
The hand stitches that help firm the bonded rib part to the sail permanently may be stations for bow strings; the bow strings might have one end or both ends with a small hook for quick hooking. If the bow string is permanently attached to one of the firming stitches, then such could wrap with the sail for tote pack. Or a bow string with a hook on each end could be packed separately and used to form cambers. Various graded double-hooked strings could provide for various cambering to explore various airfoils. Shorter bow string for more cambering in a rib section. Etc.

BowStringsHooksToStitcedLoopsRibScene.png
BowStringsHooksToStitcedLoopsRibScene.png (6.41 KiB) Viewed 36 times

BowStringShapingRib.png
BowStringShapingRib.png (1007 Bytes) Viewed 36 times
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