Too cool! The Wikipedia article on Dynamic Soaring notes: DS is a flying technique used to gain energy by repeatedly crossing the boundary between air masses of significantly different velocity, often using the leeward side of ground features such as ridges. Higher velocity gradients allow for greater energy extraction, at the cost of high airframe loads, so RC DS gliders are usually built of composite materials. Albatrosses use DS from ocean waves to soar long distances with low energy.
Motor is going to slow it down because not only you add weight but if the max speed of the prop is only giving it 200mph. At 400mph. The propeller will become a source of drag causing it to slow down not going to 800mph
nice work fellahs! must be an epic drive to do your hobby though..... It's crazy how big the wings are on those things have they ever folded up on you's whilst pulling those turns?
As John Adams stated lower down most don't understand dynamic soaring - it is about adding kinetic energy to the plane with every revolution, it is not just 'flying in circles' -check it out. Its all about kinetic energy you have to see one of these fly to believe it but there speeds are correct
With so mush self congratulatory garbage on u-tube it is so enjoyable to come across a thoughtfully put together video. The music, I've never heard before, beautifully matches the sophistication of this refined hobby. The whole thing is just a pleasure to view from beginning to end. Thanks for putting it up.
it is because of the pattern in which it flies. it dives down, gaining speed due to gravity, then climbs (losing a small amount of speed as it does so) then hits the wind shear, which gives it a "boost" of lift and speed. it repeats this process over and over through the circle, gaining speed as it does so.
Proof again that a great subject, a beautifully built aircraft and some very good shooting can be ruined by an awful, inappropriate and unnecessary sound-track. Less is more. But sincere and heart-felt congratulations for the good elements.
AWESOME vid!!! Truly amazing machine!! I would imagine it's built out of a lot of cf. Is this a custom build? I'm watchin for 500 mph!!!! Nice job and nice flying!! Best wishes!
@uSee218 The flaps on the wings, similar to any airplane design, each wing has flaps that allows you to change the position up or down. In this case, it should be up on one wing and down on the other. Stopping is another thing, you would have to stop spinning the plane, let it hover (lose its speed) and glide it back to you. It's mainly dependent on those flaps added to each wingspan.
Great job guys. I have a question, what kind of transmiter/receivers do U use? Brand and channels, although I guess U only need 4 channels... am I wrong?
Slope gliders have almost always held the RC speed records. Back in the 80's, when powered planes were flying around 203 mph, the gliders were going 250+. It's not upwind, or downwind, the use the wind coming up a slope and fly parallel to it. The high aspect ratio wings and sophisticated airfoils compress the wind and turn it into thrust. This is not new.
Notice: these are professions! -You will notice the high tech safety barriers i.e. minivans -take note as the flight path..Never...ever threatens the operator or spectators. -snowboarding gear is optional
I thought you guys were insane. Then I saw the sand bag wall and realized you were just merely crazy. Lets say that conservatively that plane weighed 30 ounces. At 240MPH just a piece of it hitting you could kill. Insane demonstration. I'd be more impressed if we could see how many G's it was pulling. It's got to be an insane number.
@1clinttorris Wrong. CF and kevlar wings were first developed 30 years ago so that thermal competition gliders could zoom up higher on launch using very powerful winches. I was there when they did it (in Canada). Coincidentally such competition models were now strong enough to be packed up mountains in Europe, where they could do 250 miles per hour. These ones are optimized for dynamic soaring, but there's a cottage industry building and selling composite RC gliders for all purposes.
Does going that fast burn up your servos, trying to keep the control surfaces engaged to make the tight loops like that? I think this is amazing....makes me think of all kinds of design ideas!
@galaxything I don't fully understand it either but there it is. I have a good friend who flies these things and they are incredibly fast! Something like a slingshot effect or something along those lines, didn't we do it to get a capsule around the moon?
The area where I live is similar to what you show in the vid, and rarely are the winds calm. What would you recommend for a starter glider? I have never flown before.
@YOUONLYLIVEONCE08 Yeah it is scale speeds but it still goes around mach 19 in normal terms. (It's a half-size version of that Falcon HTV-2 which went mach 20 and is HUGEEE.
@spolo123, ok sorry. I'm glad you looked it up. Yes, mythbuster should do this and educate people, its actually one of the asked in their forum to make an episode about Dynamic Soaring, because a lot of people doesn't believe the physics behind it.
@Blado1988 The speed is generated by flying through different air masses with varying velocities. Each oliptical pass conserves energy thereby accelerating the glider. It is called "Dynamic Soaring", and the Albatross Bird uses this same principal to conserve energy when flying vast ocean distances. Check it out on Wikipedia, Its not fake :) They hope to break the sound barrier soon with the right conditions and stronger glider.
Too cool! The Wikipedia article on Dynamic Soaring notes: DS is a flying technique used to gain energy by repeatedly crossing the boundary between air masses of significantly different velocity, often using the leeward side of ground features such as ridges. Higher velocity gradients allow for greater energy extraction, at the cost of high airframe loads, so RC DS gliders are usually built of composite materials. Albatrosses use DS from ocean waves to soar long distances with low energy.
Imagine getting hit by that...
Awesome work guys
great flying, awesome video.
one of the most amazing videos I've ever seen!!
This is amazing ! Love it.
Great flying...and what a view.
Leo
400 mph for an RC GLIDER??
Astonishing!!
this is by far the neatest thing ive seen in a long time. the human mind and our ingenuity never ceases to amaze.
Nice. I happened upon these guys once when they were flying. Pretty cool stuff!
Gobsmacked...399 MPH unpowered, amazing stuff.
Thanks for sharing..
Steve
Motor is going to slow it down because not only you add weight but if the max speed of the prop is only giving it 200mph. At 400mph. The propeller will become a source of drag causing it to slow down not going to 800mph
Awesome tune!
One day you will break the sound barrier! Awesome Dude!
Surprising - neat to move a craft that fast without a motor. Good stuff guys.
You Guys are crazy...:-) everytime when i see this Video, I am
thinking about this precision..really good Job! +1
Been watching videos for about 3 hrs. Thats some amazing shit you guys did out there!
nice landscape^^
You guys are above awsome,I wish I had those conditions at my place!
great! nice landings ;)
i didnt think this was possible but here iam watching it happen before my eyes nice one good vid too
That is incredible!
How? O_O It's incredible! Nice job.
nice work fellahs! must be an epic drive to do your hobby though..... It's crazy how big the wings are on those things have they ever folded up on you's whilst pulling those turns?
Very nice video! It most have been a little hard to control an airplane going at 350+. Nice Job!
.
~DLPlanes
this is amazing ;)
Just awesome!
That is pure adrenaline rush!
As John Adams stated lower down most don't understand dynamic soaring - it is about adding kinetic energy to the plane with every revolution, it is not just 'flying in circles' -check it out. Its all about kinetic energy you have to see one of these fly to believe it but there speeds are correct
With so mush self congratulatory garbage on u-tube it is so enjoyable to come across a thoughtfully put together video. The music, I've never heard before, beautifully matches the sophistication of this refined hobby. The whole thing is just a pleasure to view from beginning to end. Thanks for putting it up.
it is because of the pattern in which it flies. it dives down, gaining speed due to gravity, then climbs (losing a small amount of speed as it does so) then hits the wind shear, which gives it a "boost" of lift and speed. it repeats this process over and over through the circle, gaining speed as it does so.
@trinitized I fully agree. Simple because it is RC.
Proof again that a great subject, a beautifully built aircraft and some very good shooting can be ruined by an awful, inappropriate and unnecessary sound-track. Less is more. But sincere and heart-felt congratulations for the good elements.
@StettB26 this should count even MORE since its not aided by a motor. I think its amazing.
Flying at 100mph is hard enough, I can only imagine how much skill it takes to fly a plane at 400mph. Impressive!
awesome video aswsome plane
very cool
Amazing!
nice landing
@trinitized According to Wikipedia's article on dynamic soaring, the world record is 416 mph
AWESOME vid!!! Truly amazing machine!! I would imagine it's built out of a lot of cf. Is this a custom build? I'm watchin for 500 mph!!!!
Nice job and nice flying!!
Best wishes!
very cool!!!!
@rcpilotp51 This is where balance stabilizers really come in handy. And also high torque metal geared servos.
Impressive!
better then any thing you have ever made
Beautiful location i mean .. STUNNING!
Looks like Parker mountain near Acton Calif
Ive been up there a couple of times in the 80s no one was flying that fast back then as I remember.
@uSee218 The flaps on the wings, similar to any airplane design, each wing has flaps that allows you to change the position up or down. In this case, it should be up on one wing and down on the other. Stopping is another thing, you would have to stop spinning the plane, let it hover (lose its speed) and glide it back to you. It's mainly dependent on those flaps added to each wingspan.
nice looking glider
Awesome..
@tonystarification wich helmet should protect an 400mph impact? ;-)
WOW i had no idea a glider could do that !!!! BAD ASS!! Props
good job u put wings on a stick very creative
Gliders, first thing i ever got in the air, i was 14 spent 3 weeks making it, i was hooked
Never heard of Weldon, but it looks friggin beautiful.
Awesome control, looks deadly difficult to maintain those tight circles at high speeds. Looks alittle faster than my bixler, lol. Cheers
Fun Fact, the speed limit in the lower airspaces, "Echo" and "Gold", is 250mph.
that happen here where i live in lompoc ca. i saw that episode ha.
Dam! Thats hardcore.
Dont think Ill be trying that anytime soon with this Glider xD
STM Arcus Advanced - Flight test.
(Awsome sailplane video)
Great job guys. I have a question, what kind of transmiter/receivers do U use? Brand and channels, although I guess U only need 4 channels... am I wrong?
What size elevator servos do these models need with those speed forces ? Do they need to recharge the RX pack after every flight ?
@nighthawk0077 What about the receiver and servos? What do they run on?
Slope gliders have almost always held the RC speed records. Back in the 80's, when powered planes were flying around 203 mph, the gliders were going 250+. It's not upwind, or downwind, the use the wind coming up a slope and fly parallel to it. The high aspect ratio wings and sophisticated airfoils compress the wind and turn it into thrust. This is not new.
The airframe would be taking crazy g forces! Nice work, i'd be scared of something failing and lobbing someone's head off...
Notice: these are professions!
-You will notice the high tech safety barriers i.e. minivans
-take note as the flight path..Never...ever threatens the operator or spectators.
-snowboarding gear is optional
That is Bonkers!!
Those models must be carbon fibre to withstand all those Gs?
I thought you guys were insane. Then I saw the sand bag wall and realized you were just merely crazy. Lets say that conservatively that plane weighed 30 ounces. At 240MPH just a piece of it hitting you could kill. Insane demonstration. I'd be more impressed if we could see how many G's it was pulling. It's got to be an insane number.
Jayziz. You have to wonder how many g's the thing is pulling in those turns.
wtf guys.... you dudes are insane lol..... thats some nice landing lol :P greez from austria :P
@siret, then tell us what speed it is supposed to be registering?
nice location :P
@skiendog i am talking about manned aircraft btw. the shuttle entry speeds are obviously quicker, i'm just on about planes.
@justlostagain ye but terminal velocity varies from 120 - 130 (ish) mph with verry aerodynamic objects, 400 mph is 3-4 times that amount :O
@1clinttorris Wrong. CF and kevlar wings were first developed 30 years ago so that thermal competition gliders could zoom up higher on launch using very powerful winches. I was there when they did it (in Canada). Coincidentally such competition models were now strong enough to be packed up mountains in Europe, where they could do 250 miles per hour. These ones are optimized for dynamic soaring, but there's a cottage industry building and selling composite RC gliders for all purposes.
its incredible i want one of that planes....
That seems like a great hobby
Does going that fast burn up your servos, trying to keep the control surfaces engaged to make the tight loops like that? I think this is amazing....makes me think of all kinds of design ideas!
Hi -- fabulous! Make / model of gliders? Web site to purchase?
@galaxything I don't fully understand it either but there it is. I have a good friend who flies these things and they are incredibly fast! Something like a slingshot effect or something along those lines, didn't we do it to get a capsule around the moon?
i would like to see this video again, just with a slightly changed battery level on hes controller :D
The area where I live is similar to what you show in the vid, and rarely are the winds calm. What would you recommend for a starter glider? I have never flown before.
@awPoPz There is a bird (a hawk I think idk) that flies at 200 or 300 mph when hunting.
Thats wicked cool, but how do you land?
how do you do this? crosswind? can it be done with any high performance glider?
@ChrDam12321 gain momentum in strong wind, like swinging on a swing without touching the ground.
And 3 years ago they broke 548 mph! So cool!
@uSee218 There's no engine, they're gliders based on the natural wind to give them velocity. The circular motion that they do gives them momentum.
A small mounted camera on that thing would capture amazing footage.
Looks like a great place to fly a hangglider;)
amazing what proper aerodynamics and a 45mph wind can achieve.
How do you get 300 mph out of 45 mph winds? OK, sail effect, and momentum, but even so. Incredible. Very skillful flying.
good, very fast !
standing close to that thing at full speed must be pretty nerve-racking to say the least.
@koolkiwikat
Why, we know the speed, and we can estimate the radius of the circle, so we can calculate it pretty precisely.
that is insane. How do you land it with out wrecking it in those winds?
the glider is light and since it is going in circles the momentum increases its speed, its something like that
Closer, closer !
@2012goingNutz Why chain them outside the factory. When you could get free labor for keeping them inside.
where do you buy one
@YOUONLYLIVEONCE08 Yeah it is scale speeds but it still goes around mach 19 in normal terms. (It's a half-size version of that Falcon HTV-2 which went mach 20 and is HUGEEE.
@spolo123, ok sorry. I'm glad you looked it up. Yes, mythbuster should do this and educate people, its actually one of the asked in their forum to make an episode about Dynamic Soaring, because a lot of people doesn't believe the physics behind it.
@Blado1988 The speed is generated by flying through different air masses with varying velocities. Each oliptical pass conserves energy thereby accelerating the glider. It is called "Dynamic Soaring", and the Albatross Bird uses this same principal to conserve energy when flying vast ocean distances. Check it out on Wikipedia,
Its not fake :) They hope to break the sound barrier soon with the right conditions and stronger glider.