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Re: The 5 ft-packed-HG Movement

Postby JoeF » Thu Jun 13, 2024 9:49 am

Development note ...
== "Bury some Dyneema cord in the strut bracket LE anchor post while that cord also captures a steel washer; such will give backup in case the anchor post breaks; the loops of the stays will still loop the washer while only a small change in global wing balance will occur in case of such post breaking."

==When mounting the loops on the strut bracket post, the planar-frame diagonal rigging lines go on first; then following the covering of the frame mount the landing stay's loop. Then finally place the loop of the flying stays. Such follows the assembly of the wing steps.
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Re: The 5 ft-packed-HG Movement

Postby JoeF » Thu Jun 13, 2024 7:06 pm

Waking from nap today:
Mind was afire with looking again at a species where telescopic spar segments are 4-ft, not the 5-ft that been dominating recent flow. The 4ft: DCBAABCD fore spar-segment run and the aft spar-segment run DCBAABCD with an aiming of 4-in shear-pinned overlap at segment joins gives about 30 ft of LE length. Avoid spar couplers and depend only on chordwise strut braces of two designs, one fore and one aft; let these brackets hold struts, but give also some length gain in order to gain for the HG some sail area, or not depending on choice for final HG size; that is, strut length could be from 4 ft up to 6 ft, changing sail area and aspect ratios. One choice that gives approximately 30x6+20=200 sq ft might be nice. The afire gain: 4 ft pack length, not 5 ft. ....The 4 ft would give a much easier polite transport. Recent play over spar couplers is dropped for this consideration while focus is on strut brackets that float on the front and rear spar segments while being stopped from floating keelwise. Stopping the strut brackets from floating keelwise could be done by a Teflonize ring that is held by the spar-join shear pins. The first stopper on the A spar segment might be permanently set on A; but the ring stopper on the B, C would cost a slightly longer pack, but that might be tolerated: 4 ft 1in ... maybe (to be determined); if a flush collar rings the ends of the spar segments, it might be selected to not have an added stop ring, but depend on the strut brack to butt against the Teflonized spar end collar for the stop-keelwise-moving function; shear pins for joint could be a redundant stopper. So..... maybe 4 ft will be first packed build asap: Wing4 .... :!: :!: :idea:

ChatGPT brought in variable struts when my input intended simply design variability, but both are possible and interesting to explore.
ChatGPTovermyinputnotshown wrote:The innovative design utilizes a 4-foot strut along with two strut braces that connect to the fore and aft spars. This configuration allows for adjustments in the chord length of the wing. The key lies in the design of the strut brackets that secure the struts to the spars.

Design Details:

Strut Length: The primary strut remains a constant 4 feet.
Strut Braces: Two braces extend from each end of the strut to connect to the fore and aft spars. These braces are designed to provide additional length beyond the basic 4-foot strut.

Adjustable Brackets: The strut brackets are engineered to be adjustable, offering a range of chordwise length gains.

Chord Length Variation:

___Minimum Gain: At the minimum extension, the strut braces add a small length, resulting in a chord length of approximately 4 feet 2 inches.

___Maximum Gain: At maximum extension, the strut braces provide a significant length increase, extending the chord length up to approximately 6 feet.
This adjustable bracket system allows for customization of the sail area and aspect ratio of the hang glider, providing flexibility to optimize performance for different conditions and preferences.

Summary:
By utilizing a fixed 4-foot strut and incorporating adjustable strut braces, the design enables chord lengths ranging from 4 feet 2 inches to 6 feet. This flexibility is achieved through the innovative design of the strut brackets, allowing for both increased sail area and varied aspect ratios.
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Re: The 5 ft-packed-HG Movement

Postby dhmartens » Fri Jun 14, 2024 12:03 am

Image
Look closely as the 5 foot glider rotates 90 degrees and deployees.
I am looking at a specialist to locate the movie prop.

Funny
https://www.youtube.com/shorts/aYx8B2QdEu0


detail:
https://www.youtube.com/watch?v=zjz3R4gpRcQ

Music:
https://www.youtube.com/watch?v=GejbMaQ4Llg
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Re: The 5 ft-packed-HG Movement

Postby JoeF » Fri Jun 14, 2024 7:51 pm

Nice finds, Doug!
Support:

===============================================================
Theme development note today:
Post-nap progress hope in simpler fore and aft strut brackets
ForeAndAftWithGains001.jpg
ForeAndAftWithGains001.jpg (43.14 KiB) Viewed 336 times
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Re: The 5 ft-packed-HG Movement

Postby JoeF » Sat Jun 22, 2024 7:56 pm

Development note:
:arrow: There is high hope that the upper and lower rigging will be a united complex during tote. At site: Dress the rigging set with frame. Then place the sail segments. Then finalize any control line assembly.
===========================THE FOLLOWING FIRST DRAFT HAS SOME ERRORS* FOR ONE POTENTIAL SOLUTION: =====================
### Hang Glider Rigging and Assembly Guide

#### Overview

The hang glider design incorporates a sophisticated rigging system categorized into three primary sets of lines: the upper rigging, the flight rigging, and the diagonal-keeping lines. These lines form a unified assembly, termed the **Line Complex**, which can be easily transported and set up at the flight site. Below is a structured guide detailing the rigging components and the assembly process.

#### Rigging Components

1. **Upper Rigging:**
- **Spanwise Crosslines (4):** These lines connect the upper kingpost to the wingtips, providing stability across the wingspan.
- **Chordwise Keelwise Crossline (1):** This line runs from the kingpost to the keel, ensuring longitudinal stability.

2. **Flight Rigging:**
- **Spanwise Flight Crosslines (4):** These lines pass through the lower tips of the queenposts and connect to the frame, supporting the positive flight loads.
- **Chordwise Flight Crosslines (2):** These lines extend from the nose of the glider, pass through the bases of the queenposts, and connect to the aft keel, with one line per queenpost.

3. **Diagonal-Keeping Lines:**
- These lines maintain the integrity of the quadrilateral frame sections, ensuring the frame remains rigid and stable during flight.

#### Assembly Instructions

**1. Preparation:**
- Unpack the **Line Complex** at the flight site. Ensure all lines are free of tangles and lay them out in a clear, organized manner.

**2. Frame Dressing:**
- The frame segments for the spanwise members consist of four sets of tri-telescopic tubular beams. The chordwise frame members are special assemblies of three parts each: three assemblies for the left wing, three for the right wing, and one for the keel assembly. Follow these steps for dressing the Line Complex with the frame segments, starting from the central keel region and working out toward the wingtips.

**Central Keel Region:**
- Attach the keel assembly to the chordwise keelwise crossline from the Line Complex.
- Ensure the keel is properly aligned and secure.

**Spanwise Members:**
- Extend the first set of tri-telescopic tubular beams and attach them to the keel assembly.
- Connect the spanwise flight crosslines to the lower tips of the queenposts, ensuring they pass through the designated points on the frame.
- Repeat for the remaining three sets of tri-telescopic tubular beams, working outwards from the keel to the wingtips.

**Chordwise Members:**
- Assemble the chordwise frame members for the left wing, connecting the three-part assemblies to the spanwise members and the Line Complex.
- Attach the chordwise flight crosslines to the nose of the glider, ensuring they pass through the bases of the queenposts and connect to the aft keel.
- Repeat for the right wing, ensuring all connections are secure.

**Diagonal Lines:**
- Attach the diagonal lines on each side of the meta wing, extending from the central region toward the wingtips.
- Ensure the diagonal lines are properly tensioned to maintain the frame's rigidity and stability.

**3. Line Tension Adjustment:**
- Once the frame is dressed with the Line Complex, check the tension of all lines. Adjust as necessary to ensure the rigging is taut and secure.

**4. Sail Dressing:**
- With the frame and rigging properly set up, proceed to attach the sail segments to the frame. Ensure the sail is correctly positioned and secured to avoid any issues during flight.

#### Final Checks

- Inspect all connections to confirm they are secure and properly fastened.
- Verify that the line tensions are appropriate and that the frame is rigid and stable.
- Ensure the sail is free of wrinkles or misalignments.

### Summary

The **Line Complex** simplifies the assembly process by integrating all rigging lines into a single, transportable unit. By following the organized steps of laying out the Line Complex, dressing it with the frame segments starting from the central keel region and working out toward the wingtips, adjusting tensions, and finally attaching the sail segments, the hang glider can be efficiently and effectively prepared for flight. This structured approach enhances both the ease of assembly and the overall safety and performance of the glider.

*The errors will be corrected after build and trial practice assemblies are mastered. :!: :!: :idea: :idea: :arrow: :lol: :D :) :) :) :)
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Re: The 5 ft-packed-HG Movement

Postby JoeF » Sun Jun 23, 2024 1:26 pm

Draft of a net for a frame bridle for a potential Wing5 solution:
BridleWing5Draft001onJune23of2024.jpg
BridleWing5Draft001onJune23of2024.jpg (36.49 KiB) Viewed 255 times

The net holds:
Landing crosslines spanwise and chordwise
Flying crosslines spanwise and chordwise
Quadrilaterals' diagonal stays
Tail TE crossline spanwise
Reflex-stay crossline

Note the join valences at 17 sites:
1445441
1542451
353

Note: The shown bridle does not depict lengths, but only join-pathway topology. Lengths of segments will be determined by the specific design of HG.
Note: The kingpost will hold 6 crosslines (4 landing spanwise, 1 landing chordwise, 1 reflex keeping)
Note: The bundle of crosslines forming the control-frame base will hold 4 spanwise crosslines and the special wrap that stays the Q-Q spread and bases the wheels.
Note: Each Q holds a chordwise crossline.
Note: The Q-Q spread stay wrap is not part of the Bridle Net drawing; such wrap that stays the spread of the Qs may tote wrapped on the 4 flying spanwise crossline set.

At-site assembly, the frame bridle would be dressed with frame segments. Then the rigged frame all dressed would receive covering with sail segments. If conrol lines are needed, such will be faced in design changes.
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Re: The 5 ft-packed-HG Movement

Postby JoeF » Tue Jun 25, 2024 12:24 pm

Of course, having two or three or four subnets just might serve the project better.
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Re: The 5 ft-packed-HG Movement

Postby JoeF » Wed Jun 26, 2024 4:06 pm

Development notes:
If a solution has wing struts with an extender on both ends, then consider mounting the strut assemblies onto the spar assemblies before setting the shear pins for the tri-or quad tele=spar joins. Let the spar shear pins keep the strut assemblies from sliding toward the keel.

DS stuffer batten system might admit of battens in low-mass pockets applied to the inside surfaces of the wing covering.
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Re: The 5 ft-packed-HG Movement

Postby dhmartens » Sat Jun 29, 2024 9:12 pm

The good:
Wolfgang Siess sets 5 foot hang glider distance record with 2 flights on a wingfoil dropped from a hot air ballon.

The bad:
he spins so violently he loses his sight temporarily and has to wait to stop spinning to deploy his chute and is basically scared out of the sport but there are some stills of him training tandem flights in Switzerland but his main youtube channel has basically ended.

https://youtu.be/dq-nXQAGllg?si=hVLoapg-LaIQf2MD&t=375
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Re: The 5 ft-packed-HG Movement

Postby JoeF » Wed Jul 03, 2024 7:39 am

Development Notes:

:arrow: Coupler with an interior mid-point cushioned stop and exterior mid-flange receives loops of up to four rig lines and the ends of two tele-spar segments. The flange stops the line loops, allowing for maximum sail area results from packed spar segments; segments would be packed telescopically. Couplers offer alternative tote solutions. Optimizing coupler design is a challenge worth facing.

What is needed and not needed in such a coupler? Stresses? Schedule of loop stacking? Maybe a final string tied to the set of rig lines looping the coupler and its flange? Flange: posts or ring-like? Interior stop complex (firm plus cushion)? Total length? Long-body design? Buried Dyneema fiber? Effects on assembly and disassembly logistics?

Pigeons, pelicans, parrots, puffins, peacocks, penguins, pheasants, petrels, pipits, and potoos balance many parameters in design!

---
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