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Re: Gliding's Nous Sphere

Postby KaiMartin » Mon Mar 02, 2020 5:45 pm

Craig Muhonen wrote:https://www.livescience.com/24071-pterodactyl-pteranodon-flying-dinosaurs.html

Unfortunately, many of the details given in this weblink do not quite reflect the current paleontologic understanding of pterosaurs:
  • The video shows a Pterodactyl that bipedaly walks, jogs, runs and finally lifts off -- very much like a modern swan or an albatross does. However, this kind of launch would be totally impossible for a pterosaur. Its hind legs are relatively short and located quite a bit behind the centre of gravity. As a consequence, a Pterodactyl would have to assume an upright posture to not topple over -- very much like a running human. However, this is incompatible with spreading their wings for flight. In addition, the legs of pterosaurs are missing areas where massive muscles for a powerful sprint would have attached. This is very much unlike the anatomy of modern birds. (See the size of chicken thighs...) The solution to this puzzle is a quadruped launch mode. That is, using all four limbs to jump into the air. That way, the brunt of the acceleration at launch is accomplished by the muscles that also flap the wings. See this video for a realistic reconstruction of a pterosaur launch: https://www.youtube.com/watch?v=ALziqtuLxBQ
  • In the video of the weblink the pteroid bone points toward the body. This is an extra bone exclusive to the pterosaurs that attached to the "hand" of the wings. However, careful investigation of the joints reveals that the bone was oriented forward and increases the wing area in front of the humerus. This works similar to like slats on modern aeroplanes. See https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1560000/ for the details.
  • In flight, the wing bones of the Pterodactyl skeleton are shown to stretch orthogonally from the spine. However, this would place the centre of lift far behind the centre of gravity. The pterosaur would instantly enter a tumble. A realistic soaring posture puts the wings in a forward pointing position.
  • When in flight, the pterodactyl skeleton points its beak straight ahead -- very much like a modern day stork. However, after looking at the details of the neck vertebrae and even the orientation of the vestibular system palaeontologists concluded that pterosaurs kept their head downward.
  • On landing, the pterodactyl skeleton casually strolls along the ground while gently flapping its stretched wings. If landing a 10 m span glider were that easy there would be much less "whack" of modern HG.
  • The drawing of the Pteranodon in flight shows a structure at the trailing edge of the wing that stretches the membrane like an umbrella or like the finger bones of a bat. However, there are no such membrane stretching bones on a pterosaur.
  • Birds did not "descend from" dinos. They are the surviving branch of the clade Dinosauria.
Most of the text seems to accurately reflect the current understanding of pterosaurs , though.

All the best,

---<)kaimartin(>---
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Re: Gliding's Nous Sphere

Postby Craig Muhonen » Thu Mar 05, 2020 11:14 am

https://m.youtube.com/watch?v=oPteHag5Cv4


https://m.youtube.com/watch?v=_yOOuMRJYtI
https://m.youtube.com/watch?v=474Ra2DSgvM

This "wave" traveled thousands of miles , then presented itself to some pretty crazy "bored / board pilots".


https://m.youtube.com/watch?v=mnWs_PD6C ... 2R&index=8
[youtube]mnWs_PD6C...2R&index=8[/youtube]

Cold pushed Hot,..."Differential" makes wind...wind makes waves, and waves and waves.

"If it sewlls, Ride it".

And thanks kaimartin for that great info on previous post. TY
"grow brave by reflection". And invincible with written words.
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Re: Gliding's Nous Sphere

Postby Craig Muhonen » Fri Mar 06, 2020 1:58 pm

https://arcscience.com/otherProducts/im ... a-over.jpg

An incredible "eastern Pacifics view of "the coast".
In "blow up" I can see my old home at Torrance Beach..and the "canyons of the Ancients ", where home is now. ..ha...
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Re: Gliding's Nous Sphere (HGNS)

Postby Craig Muhonen » Fri Mar 06, 2020 2:15 pm

[quote="JoeF"]This topic is for exposing hang gliding's nous sphere (HGNS).
===============================================
Moro's reflex


Consider thanksgiving for gravity and atmosphere and soil and sun. How human bodies respond to falling through air because of gravity.
The baby throws out its arms, maybe in a visceral wing forming upon sudden drop motions: "Oh! I do not want to fall fast downwardly!"
Could the acceleration of gravity be part of HGNS? Are we destined to grow wings for arresting falls? Could this response be a seed for gliding?
This seed about response to sudden sensing of the acceleration of gravity might be explored as part of HGNS.

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



The growing history of hang gliding might be seen as dew-giving cloud that can whet the coming future hang gliding activity. Such a cloud seems also to be an ingredient that forms HGNS. Seeding that cloud may bring rain to moisten the minds and hearts of a next generation of recreational hang glider pilots


I Salute you JoeF & FrankC
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Re: Gliding's Nous Sphere

Postby Craig Muhonen » Thu Mar 19, 2020 9:58 am

https://www.ushpa.org/page/ushpa-rigid- ... lines.aspx

I post this here and other places, to help (hopefully ) show how "misinformation", is intentionally used to "promote" and compare para-flight and it's users, which is about 35 years old, to the well documented, Historic HangGlider AND THEIR PILOTS, which goes back in Mythology.

Flex Wing
https://www.merriam-webster.com/dictionary/parafoil
A "self inflating" parachute works really well , only when the "D ring" is pulled. A "A Self-Inflating Parafoil"does not need a pilot apparently. It may be already "Self-Inflated" and it can be said that this Self-Inflation has caused "USHPA". ... U nderstanding S uch H yperbolic P aragliding A dvertising, ....is impossible.

Rigid Wing


https://www.ushpa.org/page/what-is-hang ... aragliding



"This is the most practical type of aviation on the planet. Everything you need to fly fits in your backpack, which you can check onto a plane or put in the trunk of your car as you travel. The lightweight kits make it very accessible to hike to launches. Like other aviation, paragliding is dependent on weather, maturity and judgment, and the pilot’s ability to make good decisions. You can enjoy paragliding if you’re a 12 year old girl, an 80 year old man, or someone in between. Paragliding is the most practical way to live amongst the clouds and soar like a bird wings have been a part of hang gliding since the very beginning of flight.
Indeed the wings of Otto Lillienthal and the gliders of the Wright Brothers were rigid wing hang gliders." ...

INDEED !!
And obviously left out Dave Cronk and friends, who were INDEED.... .the Pioneer pilots and builders of (very important) modern ®HangGliding. (My personal designation)



http://www.flyingmachines.org/lilthl.html


https://en.m.wikipedia.org/wiki/Wills_Wing
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Re: Gliding's Nous Sphere

Postby Craig Muhonen » Mon Mar 30, 2020 11:56 am

https://www.bing.com/videos/search?q=rc ... M%3DVDVVXX
IS THERE NOTHING SACRED RC HangGliders next
lazy surf bums.....don't even want to get wet.
:lol:
:lol:
:srofl:
:lol:
:lol:
:lol:
:srofl:
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