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Re: Hanging Arrangements for Weight-Shift Control

Postby wingspan33 » Thu Jan 22, 2015 2:06 pm

Thanks for the quick response Joe!

As I have said in the threads about PC based graphics programs, the imagery in my own brain is MUCH better, clearer and allows for near instantaneous modifications! :thumbup: :mrgreen:

Having said that, I could likely sketch up some basic drawings of the shapes and mechanics involved. I do my best, in describing the Suspension Fin, to use (invent) terms for the parts that lend themselves to allowing a clear understanding.

The "tendons" I speak of would act like tendons do around a joint in the human body.

The quasi-rigid support post would be similar to a "spine" in the Suspension Fin. The way to make it very flexible at times, while rigid at others, involves the larger post being made up of smaller posts that can insert into the sub-section above and in doing so "lock" together into one unit. This would be accomplished via a cable that passes through the center of each section and can "relax" (become somewhat longer) or become tense (becoming somewhat shorter). This could happen automatically as the pilot/harness rotates horizontal.

I hope that without illustrations (yet) I have cleared up some confusion. (? ? ?)

JoeF wrote:wingspan33, .
[ ] I, for one, won't rest until I get an accurate mental image of all the aspects of the Suspension Fin ! Two readings, so far. I will come back for many other readings. Then I'll start sketching; others might do the same. Let's get a good hold of your vision! First blush, parts-when-wanted show ---and then hidden when not needed ... comes to mind. Rigidizing and de-rigidizing at will comes to my tongue. Dialed rigidity surfaces for me also. Feels like your vision gets rid of the profile drag of open arms and hands and down tubes. Let's press forward until your disclosure is robust; you have here dated disclosure record unfolding; the Internet lets a trace occur for disclosing novel matters.
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Re: Hanging Arrangements for Weight-Shift Control

Postby JoeF » Thu Jan 22, 2015 2:46 pm

Parallel bars, back-position-limiter bar, front basebar limit-position forward
Sellers quad-wing hang glider
QuadSellershangglider.jpg
QuadSellershangglider.jpg (233.58 KiB) Viewed 3890 times

Matthew B. Sellers, patent 1908 https://www.google.com/patents/US927289
This is in the direction of one of my "city-street" hang gliders; but I aim to arrange a Safe-Splat device for skid-braking on city streets with downhill landing on the asphalt surfaces. 20-ft span for lower first wing; upper wings span going to 21 ft, 22 ft, 23 ft. perhaps; time will tell. I am aiming for carbon fiber framing. The Dockweiler site should feature such a quadruplane on weekends. Maybe I will go for "5" wings :) :?: :idea:
Notice the differences of ruddering between Sellers of 1908 and of Hall of 1978.
And compare the airfoils: Sellers with thin while Hall with thick.



(recall later Larry Hall quadrulane hang glider) "This is a Quadruplane Hang Glider designed and built by Larry Hall around 1978."
Hall arranged tether-hung pilot and triangle control frame (echo mechanically for control arrangement of 1908 W. Simon, at least).
Hall1978clip01.JPG
Hall1978clip01.JPG (40.89 KiB) Viewed 3890 times
I do not know the pilot in the Hall clipped image.
Hall1978clip02.JPG
Hall1978clip02.JPG (21.65 KiB) Viewed 3890 times

Hall1978clip03.JPG
Hall1978clip03.JPG (31.01 KiB) Viewed 3890 times
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Re: Hanging Arrangements for Weight-Shift Control

Postby JoeF » Thu Jan 22, 2015 3:43 pm

The various hanging arrangements in John J. Montgomery machines may be followed.
Here is a tease start:

Image
Balloon launching with Daniel J. Maloney as pilot
Image
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Re: Hanging Arrangements for Weight-Shift Control

Postby JoeF » Thu Jan 22, 2015 3:48 pm

Confession on my Dial Soap hanging method:
Single 3/4 " manila rope strand: I took the strand and sculpted two leg loops and then wrapped the rope around waist and put a knot stop to singe-strand up to keel. It was not comfortable at all. :thumbdown: :crazy:
Low cost could have resulted in high costs ...
DialSoapSingleRopeMakesLegLoopsWaistAndHangLine.JPG
DialSoapSingleRopeMakesLegLoopsWaistAndHangLine.JPG (15.63 KiB) Viewed 3889 times

Image
DialSoapSingleRopeMakesLegLoopsWaistAndHangLine2.JPG
DialSoapSingleRopeMakesLegLoopsWaistAndHangLine2.JPG (11.45 KiB) Viewed 3889 times
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Re: Hanging Arrangements for Weight-Shift Control

Postby JoeF » Thu Jan 29, 2015 11:48 am

PopularMechanicsAug1954p103IgorBensenGliderTriangleControlFrameWtShift.jpg
PopularMechanicsAug1954p103IgorBensenGliderTriangleControlFrameWtShift.jpg (67.49 KiB) Viewed 3876 times

Not motor powered. Gyrokite, gyro glider, rotary hang glider. Igor hung; then he grasped the small triangle control frame to move the relative position of his mass with respect to the wing.
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Re: Hanging Arrangements for Weight-Shift Control

Postby JoeF » Thu Jan 29, 2015 2:43 pm

Another item re: Sellers quadruplane
SellarsQUAD.jpg
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