Author Topic: Dynamic soaring world record video  (Read 4852 times)

Offline Midway

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Dynamic soaring world record video
« on: April 16, 2014, 03:27:28 PM »
From standstill, unpowered flight to over 450 mph in a few minutes using dynamic soaring with no onboard propulsive power.

http://www.youtube.com/watch?v=rfoxjNg-eg0 :O



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Offline Waldo

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Re: Dynamic soaring world record video
« Reply #1 on: April 16, 2014, 11:03:52 PM »
 Here is another video of dynamic soaring. Not as fast, but gives you an idea of the technique. These films are not sped up in any way.

 http://www.youtube.com/watch?v=GFBPZszQiE8

 I have done this with r/c sailplanes, not nearly as fast as my plane wasn't built for this. When you get in the groove, the plane will just keep accelerating
until it explodes from the G forces or the pilot chickens out!

 The current record is 498 MPH. The engineers that designed the airfoils for DSing say the theoretical limit for the airfoil is (IIRC) ~ 515 mph. To be that
close to the limit is some smooth flying.
I read it on the internet, so it must be true !

Offline Midway

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Re: Dynamic soaring world record video
« Reply #2 on: April 17, 2014, 01:50:58 AM »
Here is another video of dynamic soaring. Not as fast, but gives you an idea of the technique. These films are not sped up in any way.

 http://www.youtube.com/watch?v=GFBPZszQiE8

 I have done this with r/c sailplanes, not nearly as fast as my plane wasn't built for this. When you get in the groove, the plane will just keep accelerating
until it explodes from the G forces or the pilot chickens out!

 The current record is 498 MPH. The engineers that designed the airfoils for DSing say the theoretical limit for the airfoil is (IIRC) ~ 515 mph. To be that
close to the limit is some smooth flying.

Albatross use this technique to fly hundreds of miles a day in any direction they choose, even tacking against the wind.  With us only recently (in the last couple of years) figuring out how they do it, I wonder if in the near future we can use something similar to travel the skies for free too. :airplane:

"Albatross's Effortless Flight Decoded—May Influence Future Planes"
"Airplane designers are getting new ideas from the albatross, long considered a master of efficient flight"
.
http://news.nationalgeographic.com/news/2012/09/120912-albatross-flight-airplane-design-traugott-science/

The video only shows the aeroplane going in circles, but I'm sure that's only because of the pilot being on the ground and needing to maintain radio and visual contact.  This pilot has also put a video camera on one of his models to show the in-flight view.

I'd love to see him travel over several miles in any direction with a camera onboard geting up to the 300 to 400mph airspeed and deliver a small cargo to a destination (maybe by parachute drop) and then improve from there.

Free multi hundred mile flights that gain energy as you go sounds really awesome, happens in nature, and is beginning to be explored by modelers, the USAF, and NASA.  That is really exciting, to me at least. :aok

Here are the gps tracks of three albatross flying in every direction and then home again on food foraging trips.  The wind direction was obviously irrelevant to them.



http://www.naturalhistorymag.com/htmlsite/1004/1004_feature.html

Re: the Albatross:
"Those excursions can cover vast loops more than 9,000 miles long—as if birds nesting in New York City flew to the shores of Italy to forage and then returned to their nests."
« Last Edit: April 17, 2014, 02:16:23 AM by Midway »


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Offline MrRiplEy[H]

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Re: Dynamic soaring world record video
« Reply #3 on: April 17, 2014, 01:56:39 AM »
Albatross use this technique to fly hundreds of miles a day in any direction they choose, even tacking against the wind.  With us only recently (in the last few years) figuring out how they do it, I wonder if in the near future we can use something similar to travel the skies for free too. :airplane:

The video only shows the aeroplane going in circles, but I'm sure that's only because of the pilot being on the ground and needing to maintain radio and visual contact.  This pilot has also put a video camera on one of his models to show the in-flight view.

I'd love to see him travel over several miles in any direction with a camera onboard geting up to the 300 to 400mph airspeed and deliver a small cargo to a destination (maybe by parachute drop) and then improve from there.

Free multi hundred mile flights that gain energy as you go sounds really awesome, happens in nature, and is beginning to be explored by modelers, the USAF, and NASA.  That is really exciting, to me at least. :aok

Here are the gps tracks of three albatrosses flying in every direction and then home again on food foraging trips.  The wind direction was obviously irrelevant to them.

(Image removed from quote.)

http://www.naturalhistorymag.com/htmlsite/1004/1004_feature.html

The only problem is that Albatroses can flap when they hit a dead spot in the wind ;)
Definiteness of purpose is the starting point of all achievement. –W. Clement Stone

Offline Midway

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Re: Dynamic soaring world record video
« Reply #4 on: April 17, 2014, 02:08:31 AM »
The only problem is that Albatroses can flap when they hit a dead spot in the wind ;)

And we can turn on a small jet engine then too. :)


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Offline kamori

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Re: Dynamic soaring world record video
« Reply #5 on: April 17, 2014, 11:11:34 AM »
I Use to do this back in the early 90's down in Southern California. I flew a 60 inch wingspan carbon fiber plane we clocked out at 150 on a small Slope. The amazing part is its fastest going up hill....flying a roter is a total rush.... full scale glider pilots avoid the roter on a mountain...leave it to R/C to come up with this ... amazing what can be done when no human life is involved.

Offline danny76

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Re: Dynamic soaring world record video
« Reply #6 on: April 17, 2014, 11:37:48 AM »
I don't think we have sufficient Midway posts about Albatrosses, I read a book once too :old:
"You kill 'em all, I'll eat the BATCO!"
The GFC

"Not within a thousand years will man ever fly" - Wilbur Wright

Offline kamori

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Re: Dynamic soaring world record video
« Reply #7 on: April 17, 2014, 12:10:26 PM »
What the albatross does is not dynamic soaring. .. It's thermaling. Dynamic soaring needs a roter and that can only exist on the backside of a mountain/hill.

Offline Slate

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Re: Dynamic soaring world record video
« Reply #8 on: April 17, 2014, 12:18:43 PM »
    If I hear the word albatross again I'm going to wring his scrawny neck.   :furious  ( The Albatross's)  :ahand
I always wanted to fight an impossible battle against incredible odds.

Offline Midway

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Re: Dynamic soaring world record video
« Reply #9 on: April 17, 2014, 12:39:38 PM »
What the albatross does is not dynamic soaring. .. It's thermaling. Dynamic soaring needs a roter and that can only exist on the backside of a mountain/hill.

 :huh

A quick search of the web would help you see the inaccuracy of your statement.  

http://blogs.bu.edu/bioaerial2012/2012/09/30/the-albatross-the-master-of-dynamic-soaring/  :aok

"The albatross is one of nature’s most interesting creatures. They seem to fly for hours and hours and yet they only flap their wings on rare occasions. The instinct and evolutionary advantage that permits the albatross to decrease the flapping needed to stay in flight is called Dynamic Soaring. The albatross is perhaps the most famous example among nature’s creatures to use and apply this flying technique."

http://blogs.bu.edu/bioaerial2012/2012/11/17/flying-without-flapping/ :aok

"Dynamic soaring offers incalculable lessons for the aeronautical community. Engineers at NASA are already designing a UAV based upon the Wandering Albatross able to stay aloft for months at a time. Dynamic soaring is truly a lesson in the unharnessed power of nature that humanity has yet to realize. Unlimited and omnipresent, the power of nature surrounds us, and humanity must learn to use it just as the Wandering Albatross and many others already have."

Your own search will find many more proofs of the awesome dynamic soaring skill of the beautiful and extremely skilled Albatross, my favorite bird.

Please read some more and then when you're ready to say you stand corrected, I'll be proud that you too, like some of us, will belong to the higher cult of mortals for having seen the Albatross.  :)


« Last Edit: April 17, 2014, 01:36:35 PM by Midway »


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Offline Midway

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Re: Dynamic soaring world record video
« Reply #10 on: April 17, 2014, 12:48:56 PM »
   If I hear the word albatross again I'm going to wring his scrawny neck.   :furious  ( The Albatross's)  :ahand

Albatross  :) :bolt:


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Offline kamori

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Re: Dynamic soaring world record video
« Reply #11 on: April 18, 2014, 01:31:58 PM »
Same name but 2 different processes...the albatross also uses ground effect which has nothing to do with the type of flying done to accomplish that record. Plus the albatross doesn't use the back side of a roter which is a vertical downdraft created by the wind curling under as it goes over the mountain / hill...

Offline Midway

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Re: Dynamic soaring world record video
« Reply #12 on: April 18, 2014, 03:03:36 PM »
Same name but 2 different processes...the albatross also uses ground effect which has nothing to do with the type of flying done to accomplish that record. Plus the albatross doesn't use the back side of a roter which is a vertical downdraft created by the wind curling under as it goes over the mountain / hill...

http://www.dynamic-soaring-for-birds.co.uk/

"Dynamic soaring is soaring without a vertical component of air movement. The albatross uses the horizontal wind to keep itself in the air."

Neither a roter nor ground effect are needed for either the albatross or the rc models.  All that is required is a horizontal wind gradient... a difference in horizontal velocity of the wind at two different altitudes.  I can be done at any altitude (even by the jet stream).  Dynamic soaring only needs that one variable (a material difference in wind speed above and below a given altitude).  

Ground effect, roters, thermals or any rotating vertical wind patters have nothing to do with it for either the albatross, a sailplane, an rc model or any other flying being or object.

Just turn, go into, turn and come out of the boundary layer between the horizontal wind gradient.  Simple as that. :aok

If you'll reread your original post on this re thermals and such you'll see that it makes no sense with respect to the technique used by the albatross:

What the albatross does is not dynamic soaring.  :huh  .. It's thermaling. Dynamic soaring needs a roter  :huh and that can only exist on the backside of a mountain/hill.  :huh

"A thermal column (or thermal) is a column of rising air."  http://en.wikipedia.org/wiki/Thermal

Now, more than nuff said. :)
« Last Edit: April 18, 2014, 03:25:27 PM by Midway »


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Offline kamori

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Re: Dynamic soaring world record video
« Reply #13 on: April 18, 2014, 03:42:34 PM »
The dynamic soaring you posted about does require a roter... I've done this many times ... go back to the birds ... your comparing an apple an orange.

Offline Midway

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Re: Dynamic soaring world record video
« Reply #14 on: April 18, 2014, 03:50:38 PM »
The dynamic soaring you posted about does require a roter... I've done this many times ... go back to the birds ... your comparing an apple an orange.

It requires no such thing.   :bhead


http://www.youtube.com/watch?v=xlPI0AOj5MI  :aok

"Quite different physical principles underlie the soaring flight of seabirds, such as albatrosses, large petrels, and shearwaters. There are no thermals or updrafts over large bodies of water, only horizontal gusts of wind. The air masses that these gusts drive before them are slowed by friction at the water surface, and their speed is consequently slower than in higher altitudes. These seabirds have developed a type of soaring and gliding that does not depend upon the presence of either thermal or obstruction currents."


http://www.paulnoll.com/Oregon/Birds/flight-dynamic-soaring-diagram.html :aok

 
DYNAMIC SOARING
 The latest and fastest development in RC! (radio controlled aeroplanes)
 
Dynamic Soaring increases an aircraft’s airspeed by exploiting differences in velocity of two adjacent air masses.


http://www.rcspeeds.com/dynamicsoaring.aspx  :airplane: :aok


Please, sir, consider your way. :old:

Now, way more than nuff said. :)
« Last Edit: April 18, 2014, 06:25:07 PM by Midway »


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