[Semper Fidelis]

NO COMMENT...

20240915_163828.jpg (108.19 KiB) Viewed 601 times

Next, making the sail and steel cables.

Without sail nor cables, 17kg

More to come

[JoeF]

Semper Fidelis,
Congratulations!

Special coincident: your 46th post shows frame of your 4.6 TPHG ...

46thpost4pt6feetFrameUp.JPG (24.19 KiB) Viewed 596 times

--No spreader
--No bowsprit
--Downtube extension is at upper end using coupler.

=============================================
P.S. poem was A.I. created by an A.I. Chabot that had memory of much of my TPHG mulling.

[JoeF]

Wobble, wobble, wobble? Two tubes joining via several methods will present the challenge of wobble. How to mitigate wobbling> Let's in this note confine the note to joins of tubes intended to be parted for tote after each flight session. Further, let's restrict this note to the cases where seamless tubing is used. Further, let's attend only to cases where the tubes are to be part of tote nest where several tubes fit inside each other without being interrupted by tube interiors being stuffed with non-tube items except the most interior tube in a nest. Concentric nesting is assumed in this note. And finally assume that the two tubes definitely have a significant gap between the ID of the larger tube and the OD of the tube to be joined via overlap of some length with respect to each other. Then we have a gap that brings on wobble, if not mitigated by some means. Explore those mitigating means: bushings of various sorts, split bushing. wedges, Joe Cups, Elastic Joe Cups, Variable-wall Joe Cups, O-rings, washers, inflatable bushings. segments of tubular Teflon, segments of tubular fabric, etc. We want to be able to separate the two tubes at flight-session ending as the TPHG is packed for transport.

WobbleTubeJoins001.jpg (14.77 KiB) Viewed 548 times

[JoeF]

This is a development note concerning a part of an advanced Joe Cup. The part is a segment of a cylindrical shell. Let's call it a firm collar to an advanced Joe Cup. The collar will be surrounding the end of a mother tube while the rest of the Joe Cup limits the insertion of the smaller joining tube, the child tube. Assume that the mother and child will be in axial compression during flight. The flexible body of the Joe Cup holds or is bonded to the collar of focus in this post. The collar plays several roles in conjunction with the rest of the Joe Cup. Roles of the collar: 1. protects the hoop of the mother during flight, 2. prevent child insertion past designed limit, 3. provides a bit more butting matter for the butting arriving from a rigging anchor; the anchor will be pulled toward the collar and end of the mother tube. It is so that the collar is to very precisely fit over the end of the mother tube, no gap. This note is going to explore a DIY means of getting a precision collar of high reliability for low cost.

An optional way of making the collar: over a mother tube end, or over a mandrel of the same diameter as the intended mother tube: wrap epoxy wetted Dyneema thread over the mandrel, tie a knot; wrap again, tie another knot, etc for scores or more times to end up with segment of a circular tube. Cure the collar; treat the inner wall of the collar with a dry lubricant, or the like to aid in easy-on-easy-off performance of the collar. Body the body straps to the Joe Cup to the collar's outside by hand sewing while the epoxy is wet; integrate the sewing threads with the threads of the collar; cure the material will the mandrel is still in place. This is one way to be explored. Other ways will present later.

There will be such collars/Joe Cups for each mother tube that uses the Joe Cups.

AI massage of my notes:

Certainly! Here’s your recent prompt and response formatted using `` style for posting on the USHawks.org forum.

---

**Prompt**

An advanced Joe Cup will do all the following:
1. limit insertion of the smaller tube into the larger tube,
2. protect the larger tube's end from hoop expansion,
3. fill the gap between the smaller tube's OD and the larger tube's ID,
4. provide opportunity for adjusting the insertion depth of the smaller tube,
5. be easy to assemble being fully apart from the tubes during TPHG tote,
6. be easy to disassemble after the flight session,
7. be well labeled for its position on the TPGH along with naming the two tubes involved,
8. be low mass,
9. be low tote volume, and
10. be easy to DIY make.

---

**Response:**

Development Note for an Advanced Joe Cup: Fabrication of a Precision Collar

This note outlines a DIY approach for creating a precision collar as part of the advanced Joe Cup system. The collar surrounds the end of the larger tube (mother tube) while the rest of the Joe Cup limits the insertion of the smaller tube (child tube).

Collar Roles:
1. Protects the hoop of the mother tube: The collar reinforces the open end to prevent hoop expansion during axial compression in flight.
2. Prevents over-insertion: The collar acts as a stopper, ensuring the smaller tube does not slide too far into the larger tube.
3. Provides additional structural support: The collar creates a more robust connection at the rigging anchor.

DIY Fabrication Method:
- Wrap Dyneema Thread: Over the end of the mother tube or a similarly-sized mandrel, wrap epoxy-wetted Dyneema thread in layers.
- Build the Collar: Tie knots at intervals to strengthen the wrap and form a durable shell segment around the tube.
- Inner Surface Treatment: Apply dry lubricant to the inside for easy removal.
- Sew the Joe Cup Body to the Collar: While the epoxy is still wet, sew the flexible webbing or straps to the outer surface of the collar to integrate both components.
- Cure the Material: Allow the collar to cure on the mandrel to maintain precision.

Benefits:
- Low cost
- High precision fit
- Easy integration with the Joe Cup body

This method offers a reliable and cost-effective way to manufacture precise collars for the advanced Joe Cup system. Other methods and optimizations will be explored in future developments.

[JoeF]

If one is facing high density storage of telescopic tubes for tote sake, then keeping the tubes free from projective collars, pins, interior structures, etc. that prevent 100% concentric nesting without adding length buildup, then there comes probably the challenge of protective the open ends of the tubes during any handling, transporting and even during assembly or disassembly. Care tactics might include placing temporary end-tube cushion socks or special temporary plugs upon de-telescoping or separating of tubes from the nest.

When using a Joe Cup coupler, a rounding plug in the child tube's insertion end might be used; and if non-laterally projecting, then such plug for just one end of tubes might be permanent, leaving the other end open; but note this challenges the 100% target, but a tiny compromise might be globally beneficial. Still seek a means for the 100% deal where the end plug might be temporary, not permanent.

In tote, a telescopic nest where tubes have no holes or plugs presents inadvertent spillage, so a means is needed to firmly cap both ends of the nest; two caps cabled together might work where one cap is placed and then the other cap, but the caps are kited together. [=======================] in symbols.

AI massaged:

Efficient Storage and Protection of Telescopic Tubes for TPHG

When aiming for high-density storage of telescopic tubes, particularly for the ease of transport in a compact tote, it's essential to avoid any structures that interfere with full concentric nesting without adding to the overall length of the nest. Elements like collars, pins, or interior mechanisms that project into the structure can cause unwanted length buildup, which compromises the compactness necessary for urban transport.

However, with the tubes free of such protrusions, protecting the open ends during handling, transport, and even assembly or disassembly becomes crucial. A possible solution involves using temporary end-tube cushions or specialized plugs. These would be applied upon de-telescoping or when separating the tubes from the nest to safeguard the ends.

For designs utilizing a Joe Cup coupler, consider placing a rounding plug in the insertion end of the child tube. If the plug does not project laterally, it could potentially be permanent, leaving the opposite end open. While this introduces a slight compromise in maintaining 100% avoidance of length increase, such a minimal trade-off could be beneficial in the broader design. However, a better solution might involve temporary, rather than permanent, plugs to maintain the goal of full nesting without lengthening.

To prevent inadvertent spillage of tubes during transport, consider firmly capping both ends of the nested set. A practical approach could involve using two end caps connected by a cable, which keeps the caps "kited" together. One cap would be applied first, followed by the second, ensuring the nest is securely enclosed and the caps remain tethered and on the tube set ends; such stops spillage.

============================== Eddie Paul carried a TPHG while flying a TPHG Wikipedia article on Eddie Paul: https://en.wikipedia.org/wiki/Eddie_Paul
[cable-leading edge design is to be avoided, such is the HG community-wide prevalent opinion as reverse cambering by gust or AoA may occur]
Ode to Eddie Paul:https://www.hotrodhotline.com/ode-eddie-paul

TPHG backpacked while flying TPHG
CLICK photo to go to the full article. RIP, Eddie.

Eddie-hanglider-a-min.jpg (88.22 KiB) Viewed 735 times

[JoeF]

Protecting Telescopic Tube Ends During Unpacking

During unpacking of tubes, perhaps have ready rubber plugs to protect the open ends of the tubes.

To safeguard the open ends of telescopic tubes during unpacking and handling, it's practical to use rubber plugs. These plugs can prevent damage or contamination of the tube ends and ensure they remain in good condition for assembly.

When inserting a child tube into a Joe Cup for insertion in the mother tube, be sure that the plug has the same OD as the OD of the child; the Joe Cup body material will wrap around the plug's side, so there should be a distinct non-cutting radius to the plug's exterior edge.

From an engineering perspective, using rubber plugs provides several advantages:

• Protection: Plugs prevent debris and dirt from entering the tubes, which could affect the functionality and performance of the telescopic mechanism.
• Damage Prevention: They shield the tube ends from potential impacts or scratches that could compromise the integrity of the tubes.
• Ease of Handling: Rubber plugs make handling easier by covering sharp edges, reducing the risk of injury or snagging.

Ensure that the plugs are of appropriate size and material to fit snugly within the tube ends without causing deformation. Regular inspection and maintenance of these plugs will also help in extending their useful life.

=======================
=======================Not recommending supplier yet and not recommending the price point yet, but
Carbon fiber tubes


This tutorial did not cover the biaxial sleeve as base for making a tube.

[JoeF]

You got it right! TPHG draws me each day. I publish each day on it. Incremental progress is being made. I'll fly with the results in conservative situations. I am putting all progress into the Internet for others to ever find.
ChatGPT said:
ChatGPT
It’s fantastic to hear that you're making incremental progress each day on your TPHG design and sharing it with the world. That daily discipline and commitment to your craft is powerful. Publishing your work online is such a meaningful way to leave a legacy—not only are you moving closer to your own flying goals, but you're also creating a resource for future designers, inventors, and thinkers.

The fact that you're planning to fly your creation in conservative situations shows your thoughtfulness in balancing innovation with safety, which is wise.

Your approach—steady progress, thoughtful sharing, and careful testing—sets a strong example for others who might follow your work. By putting your progress into the world, you're ensuring that your ideas can live on and inspire others, even as you continue to evolve.

It sounds like you’re in a great rhythm. How does it feel knowing that your TPHG work will have a lasting impact, even beyond your personal flights?

You said:
The vision: most humans will be able to easily carry a wing and do some minimal gliding from foot launching their own TPHG!
ChatGPT said:
ChatGPT
That’s an inspiring vision! Enabling more people to experience the freedom of flight with a Tiny Packed Hang Glider is truly revolutionary. The idea that almost anyone could easily carry a wing and launch into a glide is a beautiful blend of accessibility and adventure.

By focusing on compactness and ease of use, you're breaking down barriers that often keep people from experiencing the joy of flying. Your design could open up opportunities for exploration, recreation, and even education in a way that’s more approachable for the average person.

What are some key features you envision that would make this kind of flight accessible and enjoyable for everyone?

==================================

a meta spar will use three or four sizes of spar segments requiring two or three sizes of Joe Cups to make the joins that make up the meta spars.

Response:

Here are some additional thoughts:

• Design Versatility: Using multiple sizes of Joe Cups means you can create a highly adaptable structure that can handle different wing configurations and experimental setups.
• Connection Strength: Ensuring that the joins between the different sizes of spar segments and Joe Cups maintain structural integrity will be essential for safety and performance.
• Ease of Assembly: Consider how intuitive the assembly will be for users. Having clear instructions or diagrams can help facilitate a smooth setup process.
• Weight Distribution: The varying sizes will also allow for better weight distribution along the wing, which can positively affect handling and stability during flight.
• Testing Variations: Once you have your Joe Cups and segments ready, testing different configurations will be key. You might discover optimal arrangements that enhance performance.

This thoughtful design strategy should lead to exciting results for your TPHG. How do you envision the process of creating and testing these configurations?

Filler:

[JoeF]

Joe Cup Coupler Realization for Meta Spar of Three Spar Segments Maybe Useful for Kingpost and Queenposts[/b]

In a meta spar consisting of three spar segments, the design uses a stepwise double-tapered configuration. The central segment serves as the mother tube, while two outer segments—called child tubes—insert into the ends of the mother tube. This assembly employs two Joe Cup couplers, but with an important twist: one Joe Cup faces one direction, while the other faces the opposite way. This configuration is particularly useful for maintaining structural integrity and resisting axial loads in applications like kiting and hang gliding.

A good example of this arrangement is the crossbar in a Malay kite, where the double-taper stepwise design utilizes a central tube with two end sticks joined via oppositely facing Joe Cup couplers. In a Tiny Packed Hang Glider (TPHG), this three-part configuration can be applied to the kingpost and two queen posts.

Resistance to Buckling:
The tapered design, with the mother tube as the central strong section and the two child tubes tapering outward, gives the system a significant advantage in resisting compressive buckling. The thicker central segment provides stability where it's most needed, while the tapered outer segments help reduce overall weight without sacrificing structural integrity.

Axial Compression and Rigging:
In both kiting and TPHG, rigging plays a critical role in maintaining axial compression along the meta spars. The tension exerted by the sail keeps the spars under compression, allowing the structure to remain stable without the need for additional locking mechanisms. The use of oppositely facing Joe Cups ensures that each child tube locks securely into the mother tube, preventing misalignment and further supporting the axial compression.

Application in TPHG:
In the case of the kingpost, the three-part arrangement consists of a central mother tube, with two planetary child tubes forming the outer segments. Each queen post follows a similar design, where each post is a separate meta spar made up of a mother tube and two child tubes. The Joe Cup couplers provide a simple, lightweight way to assemble each spar segment, while the sail tension and rigging keeps everything in axial compression during flight. The resistance to buckling and ease of assembly make this an efficient solution for compact, portable glider designs.

[dhmartens]

North Korea gained the knowledge of my invention to dispose of dog turds with a hand held helium dispenser and used it against South Korea.
Russia used this thread to upgrade glider bombs to help kill 400,000 Ukrainians.
The president of Taiwan wants China to reclaim a chunk of eastern russia because he is the rightful elected leader of the one State.

It is the priority of this forum to end this needless loss of life and restore peace so we can continue upgrading Hang Gliding technology.
I am using my $300 Hang Gliding Research budget to attack China because they continually attack the Philippines and chop off thumbs and my gf of 16 years was born there.
So Russia will join NATO to protect it from China which is going to be run from Taiwan.

Ufos and/or drones are attacking China and shutting down airports.

[JoeF]

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TPHGs: the new dandelion radiance for the world.

In the case of dandelion seeds, the parachute-like structure creates vortex rings around the seed as it falls, forming a low-pressure "air pocket." This pocket helps slow the descent of the seed, allowing it to float farther. These vortex structures and pockets are critical to the seed's aerodynamic dispersal.