Wow, the algorithm brought me gold this time. I love finding something unexpected like this that just sucks me in. Fantastic presentation!
@7cle
3 жыл бұрын
If one assesses the quality of videos and subscribes only to quality content and removes trash from one’s KZitem history, it improves one’s experience. One gets less crashes and more quality. Hard work though.
@neiltwaterhouse
3 жыл бұрын
Good stuff. I was present for a similar lecture by Joe Wurts himself around 2000 when he was visiting Christchurch, NZ for a gliding competition. I remember then trying to DS with my foam flying wing in the Port Hills. Did 1 and a half turns before the wingtips clapped hands. But I was super impressed by the incredible whooshing airspeed sound of soft foam and flappy packing tape from my beatup slope glider made just before it snapped.
@dougcronkhite2113
3 жыл бұрын
Spencer just went 548 mph yesterday with his Transonic.
@captarmour
3 жыл бұрын
any video?!
@captarmour
3 жыл бұрын
Is he using the new swept wing he said he would be working on? Does it have the Prandtl Bell Shaped Wing Loading?
@rmosley111
3 жыл бұрын
@@captarmour Here you go: kzitem.info/news/bejne/lZt8qpONo2iVm6A&feature=share&fbclid=IwAR1N9zSOfgNkSFDCq83_T93cvrVMCK1fBvweMmgPpTydLXTA4wVSeEGr3go
@captarmour
3 жыл бұрын
@@rmosley111 man o man how is this possible!? beautiful bird!
@captarmour
3 жыл бұрын
@@rmosley111 any canard gliders out there?
@Peter-er3cd
9 ай бұрын
This man is god level not only in aerodynamics but in transmitting it. Wow!
@leonardmilcin7798
3 жыл бұрын
So this is interesting, it means you can maintain sailplane practically indefinitely as long as you can find reliable air speed gradient. You could theoretically recover whatever amount of electricity you need from a small RAM-like device and basically keep it there forever until you loose the gradient or the device parts wear down.
@ccarlsson3171
Жыл бұрын
WOW! I just love this presentation being an engineer and an RC model flyer since I was 12 years old.
@lohikarhu734
9 ай бұрын
so this is a pretty special version of albatross flight...the performance and ruggedness of these aircraft is, well, "freakin' amazing" !
@eastcoastandy2905
3 жыл бұрын
As a flying and sailing freak for decades I must say what an excellent lecture. Thanks. Well worth watching.
@grongrod
6 жыл бұрын
Finally, a scientific and serious video about DS. Great too see. I can't believe I am posting the first comment to this. I learned a lot, great job!
@awuma
5 жыл бұрын
A superb presentation. This is the best explanation I've yet heard of DS, and the technical details Spencer presented are fascinating.
@captarmour
3 жыл бұрын
@@awuma I love the snap lap concept
@glennllewellyn7369
Жыл бұрын
Five years just went by. G’day mate! Australia
@douginorlando6260
3 жыл бұрын
He tells the story of doing the best engineering I may have ever seen. I’m impressed
@williambunting803
9 ай бұрын
That’s very exciting. As you were describing it i was thinking of the website “how flies the Albatross” and then you moved right into it.
@TechNed
Жыл бұрын
Fascinating! About 40 years ago, I watched a couple of RC gliders flying back and forth across a windy section of a place north of Wollongong, NSW (possibly, the Bulli Pass). It surprised me, how fast they were and although it was quite gusty, maybe they were picking up extra energy by flying in and out of the moving air.
@glike2
Жыл бұрын
Very impressive looking at this as an Aeronautical Engineer
@billtaylor3499
4 жыл бұрын
Stunning presentation, and amazing timing. I spend time most days watching absolutely superb natural dynamic soarers between my house and the beach, over the Kahuku public golf course. Mating flights of 6 ft. wing span Albatross, and the not explained few minutes of DS by Wedgetail Sheerwaters before landing at their nests just after sundown are entrancing. The Albatross are majestic flyers, the just over half their size (Meter wing span) Sheerwaters move at far faster air speeds and maneuver tempo, smaller 'circles' (more figure 8s) and stay lower. At sea, this is harder to understand as the scale of the wind gradient is tighter and more turbulent. Over the golf course, the beach front slope and vegetation creates a low level relatively stagnant ground layer of air, and a velocity gradient as altitude increases. Where the birds choose to DS seems far enough back from the edge of the beach incline, and associated bushes, to have no turbulent separation layer. Maybe a beach fire soon will offer enough smoke for visualization of the flows in real time, as opposed to educated guesses. The tradewind is usually 24/7. I'd grasped the principles, but not the high speed potential now being explored with RC planes. It may be helpful to close a bit of the control gap of remote piloting using what all this DS family of seabirds have, very sensitive tubes on their upper beaks for Nature's Own pitot tubes. Forward facing beak tubes give both wind speed and direction, in relation to the momentary orientation of the beak. The birds don't seem to do much hunting of head angle. A radio link back to an earpiece of the pilot might give both some sense of air speed, and turbulence. Dual channels of sensors and earpieces offer more choices. Musicians offer clear evidence the brain can use several sound channels simultaneously and process information from each independently. Thermal soaring at full scale (and some RC?) uses this for real time non-visually communicated information on both the plane's altitude changes (Altimeter), and the relative vertical movement (total energy probe variometer?) of the air mass the plane is flying in. Maybe more, since I've been out of touch with full scale soaring for over a generation. dskinetic.com has no info I can find on cost of any of the models, but I probably don't really want to know.
@myotherusername9224
3 жыл бұрын
I think AI is going to solve the control problem, there is no way a human pilot is going to process all the inputs necessary in real time for DS . If you want to visualize flow at a soaring site, what about mylar streamers on a pole?
@billtaylor3499
3 жыл бұрын
@@myotherusername9224 AI is a current popular meme, but is completely unnecessary for 'drone piloting', self-piloting Unmanned Air Vehicles. Several KZitem videos discuss programmable flight control systems with affordable hobby computer cores, I'll post the name when the memory returns. May be mentioned in earlier comments on this video? AI offers learning 'self-programming', which may be advantageous. I suspect AI is more valuable where the basic physics or other principles are less understood, or situations are too complex for most human mental modeling. Flight in most regimes is not one of these areas. Not saying AI doesn't offer optimization potential.
@bikerfirefarter7280
3 жыл бұрын
@bill taylor. I like this idea of wind sensors, and it would be easy/cheap to implement, akin to negative feedback, into servo sensors/control. Almost like ABS on a road vehicle is a 'fit and forget' as it does its thing only when needed and is way faster than mortal ability. Brilliant. The idea of feedback to pilot is also a genius suggestion, not just 'ears' but also force transducers that would give instant physical feedback of wing dynamic loads.
@claudevieaul1465
2 жыл бұрын
Just discovered this and I find this absolutely fascinating!! Not only did I fly RC planes back in the day, but I'm seeing some relevance to harnessing wind energy too - probably around tall buildings and cityscapes, as size doesn't really matter in this.... Food for thought! Thanks for sharing this 👍🙏🙏🙏🙏
@peterdvorak802
3 жыл бұрын
The plane speed can be easily measured with 2.4GHz or 5GHz flying beacon and ground based Doppler shift measuring receiver
@banzaiib
6 жыл бұрын
need to get the Slow-mo Guys in contact with Spencer!!!
@LuckyLAK17
6 жыл бұрын
Very nice presentation indeed and congrats for the record. Marco Maceri, Head of Flight Physics at Pilatus Aircraft and addicted glider pilot.
@smartcatcollarproject5699
3 жыл бұрын
548 mph now... this little wing is flying faster than your jet now ?
@ophello
6 жыл бұрын
It's a shame this only has 500 views. This shit is awesome.
@drdistorzion
3 жыл бұрын
Looks like the algorithmic overlords finally realized how cool this is, up to 47k views when writing this, that's more in line with what this video deserves! :)
@biko9824
3 жыл бұрын
50k now! This looks like something straight out of KSP
@tonywilson4713
3 жыл бұрын
Feb 18 2021 and its 85,655 views but only 1.4K Likes. I guess too many people were confused by the brilliance of this.
@elixir220
6 жыл бұрын
cool!!! back in 2001 i lived out in Los Angeles. i would say i was a fairly competent slope soaring pilot. i flew foam delta wings of different densities. one day the guy that built the foam cores that i used to fly said im going to take you to a place that is legendary for slope soaring. so we went to parker mountain. parker mountain is a ridge that you get to through fire roads in acton ca. we get up there and i see this guy walking around barefoot. i make a simple mental note and carry on. since there is really no setup for a delta wing we throw out have two short flying runs to get a feel for the place. so i look the barefoot guy almost has his glider setup hes taping up the seams in the wing. composite plane much heavier hitter than i or my buddy that showed me the place. at that point my buddy had heard of ds but i hadnt. so the guy throws out his glider takes a couple turns in the front and shoots down the backside im thinking what did the idiot just do? so i watch thinking this guy is about to lose his fancy plane. i watch him make a hard bottom turn and the plane is heading back up the hill it hits the rotor and heads back down tightening up each pass. with two or three passes the glider is doing well over 100 mph. i was so blown away to what i was witnessing. of course i aint see this type of flying but this huge glider is moving and where you park is along the fire road i get behind my truck for safety. at the time i didnt know it but he kept going back and forth on the backside looking for energy and in that he made a few passes over my truck. it truly sounded like a boeing 737 just passed over my head. so after barefoot guy lands and had settled down near hit pit i went over to him and said" bro you gotta break down for me what i just witnessed" he explains to me about ds and at the end of the conversation he introduces himself as Joe Wurtz. i got to see and learn first hand from the guy who started the craze with rc aircraft
@awuma
5 жыл бұрын
About the same time I was once more living in the LA area, trying to get back to the level I had achieved there over 20 years earlier... After one thermal contest, there was this guy practising landing after landing: it was Joe Wurtz IIRC. I realised that I'd never catch up with these guys who flew almost every day in the soaring paradise that is Southern California.
@douginorlando6260
3 жыл бұрын
Eddie Acoba ... I never heard of this until one hour ago when I came across this youtube video. At first I thought it must be fake (speeded up video with normal speed sound track). I am really impressed ... And his engineering skills are the best I’ve seen
@dr.lexwinter8604
3 жыл бұрын
I'll never understand glider pilots. Let alone toy glider pilots. Woo, you get to go fast in tiny little circles. Exciting. How many times can you fly in circles before you say "Well, I've done all I can in this field." and move onto something better?
@7cle
3 жыл бұрын
Faster than any RC jet, but NO engine.
@jackd1582
Жыл бұрын
@@dr.lexwinter8604 drag racing has entered the chat ..... Bonneville has entered the chat ....Nascar has entered the chat
@GNARGNARHEAD
7 ай бұрын
great talk, loving the format
@banzaiib
6 жыл бұрын
easiest way to explain DS is a merry go round... you know, those death traps we no longer have on our playgrounds. Imagine someone standing still while you're on it, and every time you come around, that person pushes. Same basic concept, every time the glider shoots above the peak, it picks up more kinetic energy and then dives down in the the calm air for the return trip.
@Johnbobon
3 жыл бұрын
That's a relatable analogy.
@messid74
6 жыл бұрын
Great presentation - Spencer knows his stuff!
@georgehunter2813
3 жыл бұрын
Right man at the right time and place.
@paulhope3401
3 жыл бұрын
What a fantastic talk.. very well presented. I love this kind of stuff.
@Brakballe
3 жыл бұрын
This IS awesome. Finally analogue basic dynamics that always have existed for longer than us is translated into a physiscs performance that sets world records. Highly educational. Congrats mister! This is exceptional! :)
@turnbank3492
3 жыл бұрын
I hear a boom in the future.. A couple boat tie line whips and a light cargo net to catch that baby on the landing. Thank you for sharing
@KJQHFKJHSFKJH
6 жыл бұрын
Thanks for making this public!
@kaarrff
3 жыл бұрын
I won’t bet on the DS staying below Mach 1! Good to see some real science and aerodynamics at work at the hands of some very bright guys. Until I saw this I thought my favourite subject (helicopter aerodynamics) was top of the tree! Thanks.
@LS8eighteen
6 жыл бұрын
Some additional references to full scale gliders would have been appropriate. We had molded wings and laminar flow airfoils as well as flaperons and tanks for wing-ballast (water) for the last 40+ years. Overall a great presentation, congrats for all your achievements in DS.
@admacdo
4 жыл бұрын
I think it's also appropriate to mention that full size gliders never had to overcome the reduced Reynolds numbers, 120+ G's and then trans-sonic issues all encountered within a twenty year period. All this was handled by a small group of people, who already had all the full scale glide accumulated knowledge at their disposal.
@DennisGentry
3 жыл бұрын
About Jet Stream energy recovery: There is often a dramatic difference (20 knots or more) in head/tailwinds by climbing or descending a few thousand feet, which I've discovered through many flights in the 15,000 to 28,000 foot altitude range in my turbocharged piston powered airplane. Regional airliner, turboprop pilots, and "Center" ATC personnel are familiar with this too.
@jackd1582
Жыл бұрын
It can be hundreds even???
@josephcooksley3219
9 ай бұрын
Yes developing an algorithymn to use this free energy then ATC operations that can accomadate these fluid changes is yet another interesting area ...
@TheJustinJ
9 ай бұрын
Now, if only we can get FL18-FL23 into Class E/G so Turbo piston GA can actually utilize their full potential without being stuck IFR at the mercy of ATC.
@RCP-1136
6 жыл бұрын
its a shame that this style of flying is not better known, i told my friends about it and they could not believe that the fastest rc plane has no motor...
@weatheranddarkness
4 жыл бұрын
Not a hell of a lot of people have access to a suitable site. I know I don't have anywhere.
@RCP-1136
4 жыл бұрын
@@weatheranddarkness true, i am still searching for one close to my home. not that hard, but i keep my eyes open.
@jerryboics9550
3 жыл бұрын
I fly rc planes for fun, not to die...
@REALDEALFLEXSEAL
2 жыл бұрын
This "style" is useless
@JulianMakes
3 жыл бұрын
Absolutely fascinating talk. I had no clue about these awesome rc aircraft before this, they are incredible! I wonder if the speed difference in layers can be exploited for power generation? Brilliant talk thanks
@nzsaltflatsracer8054
3 жыл бұрын
I found this very interesting. My world is about speed but my goal is 500 mph in a piston engine wheel driven vehicle. In order for these guys to go supersonic they are obviously going to have to move away from a straight wing but as Spencer pointed out, a delta wing was unsuccessful at low speed. I would expect the way to get around this would be a swing wing / delta combo design. The SU-24 & the Tornado are the best examples of this that come to my mind.
@pirminborer625
3 жыл бұрын
Wow, fascinating. Didn't expect that you can harvest so much speed in the lee side. I only knew that you can pitch down in upwinds to store energy as speed insteadof height.
@andy347
3 жыл бұрын
My first thought was: At that speed and that tight of a turn, the G’s pulled have to be incredibly high (speaking as a former fighter pilot, that’s why I thought of that)...glad you finally said you measured them about ⅔ of the way through the video - interesting that you topped out the meter at 120 Gs! You get above 9 sustained Gs and a human starts having significant difficulty staying alive! I spent a lot of time at 9 Gs - it hurts. Have lots of medical issues because of it. My other thought (which you then addressed) was that it looks like you are pushing past “normal” human ability for reaction time. Amazing flying skill there. I wonder if you have experienced mach tuck? My last thought, which you did not address, is it seems rather dangerous! At those speeds, an out-of-control model hitting a person would cut them in half!
@mossm717
Жыл бұрын
It looks like the if you do screw up, you will most likely rip the wings off, slowing it down to much safer speeds.
@MrSunrise-
Жыл бұрын
@@mossm717 Nah, it just make a hole instead of cutting you in two.
@JasminUwU
8 ай бұрын
@@mossm717this is one of those times where being on the edge of self-destructing actually makes it safer
@prototropo
7 ай бұрын
Sorry to hear about the health after-effects. Do you mind sharing what some of those were, or could be, at worst? I know neck and eye injuries in pilots are common or possible. I'm wondering if a hyperbaric--or reverse hyperbaric--a hypobaric chamber treatment would have helped. The therapeutic mechanism would be different or corollary, and it's just a wild thought. But I'm sorry for your travails.
@craigwall9536
4 жыл бұрын
Because the more general definition of "soaring" is "gaining energy in the form of speed OR altitude" (kinetic OR potential) by exploiting the momentum differences between two fluid regions, it includes sailing (as mentioned)...but also even simpler paradigms: e.g., two simple kites: one kite is flown until it enters an air mass moving relative to the anchored end of the kite string (as evidenced by a distinct "bend" in the string)...and then a second kite is attached to the string and BOTH kites are lofted when the second kite is released. They will remain aloft as long as they reside in the two moving masses, again, as evidenced by a bend in the string between them. Notice that THIS example does not emphasis increasing speed, but rather altitude.
@tolson57
7 ай бұрын
Just found DS yesterday. WOW, just WOW.
@wbwarren57
8 ай бұрын
Wow! A tour de force! Thank you for a great video!
@josephcooksley3219
9 ай бұрын
This is an amazing bit of research .... the possibilities are endless we are only scratching the surface in a wide range of areas only limited by ones own imagination ... also materials science to step beyond the next level ... we only just have the realization that migration of Birds and Insects over fantastic distances , that theres a tremendous amount of knowledge still to be learnt and understood by open minded application of ideas ... This was an amazing Presentation thankyou the application of this back of slope Soaring opens up a whole range of possibilities and application is almost endless ... Thankyou
@shaunybonny688
9 ай бұрын
Wow, talk about interesting stuff. This is crazy. Harnessing this phenomenon in the jet stream would be amazing too.
@jaybarua7095
3 жыл бұрын
Wow fantastic! What this technology leads to is an open question, especially on other planets.
@zygmunt73
3 ай бұрын
Hollly... S...t :D THAT'S AWESOME. I have been watching videos about DS, but this video covers a lot more. Thank you!
@DriveManual
Жыл бұрын
he is such a great presenter
@KimfromSoCal
3 жыл бұрын
gotta be straight here...this is done only with wind aid. Most impressive thing is someone watching the glider and being able to control it. Mother nature provides the power.
@Zhengergiser
5 жыл бұрын
Spencer is.... ...The man!
@Fiercefighter2
6 ай бұрын
this explained it so clearly thank you
@GlobalProsperityGroup
3 жыл бұрын
He broke the world record on my 43rd birthday. :)
@HansSchulze
9 ай бұрын
I agree about automation of flying parameters. An Nvidia Jetson, at a few hungred grams, should be able to do it using off the shelf MEMS as gyroscopes, tune flight characteristics by recording the control and movement values, with training happening on vetted best commands (best loops, fastest, safest, smoothest). Sort of Tesla style, log hundreds of loops, train, have run simulations of control to verify quality, retrain, then put as passive into glider and record its virtual movements. Ultimately then press an autopilot mode while in circular flight. Might also need pitots for speed measurement, which would solve other questions.
@microbuilder
3 жыл бұрын
As far as the human side of things go, I wonder if something like forced feedback in the sticks would help in some way...you could tell how much load was on the control surfaces by the tension in the sticks as the plane made its laps.
@georgekurgansky5986
3 жыл бұрын
Wow.. I'm blown away!
@angusmacsac
3 жыл бұрын
You killed it in this video! Ton of great info
@interamerichanic
3 жыл бұрын
It would be really cool if videographers developed some way of zooming in and tracking the plane more closely. With standard video it's almost invisible at such speed and distance. A challenge for another discipline, perhaps.
@alfredojohannes6827
3 жыл бұрын
friggin amazing! watched the whole thing! he killed it.
@olsonspeed
3 жыл бұрын
Very interesting, not sure of an application for manned flight but it is a technique that will benefit autonomous aircraft.
@olsonspeed
3 жыл бұрын
@ep5 I am very familiar with both the Dyna-Soar and Dynamic Soaring, why do you feel they are related?
@christopherstube9473
3 жыл бұрын
Outstanding presentation
@99bx99
3 жыл бұрын
I might take my 1979 UP Condor hang glider to the ridge and give that a try.
@AnderzP
4 жыл бұрын
Awesome. Very well explained !
@whathasxgottodowithit3919.
3 жыл бұрын
What a great explanation on a very interesting topic.
@JordanHourGlassDJ
3 жыл бұрын
...and I still have problems flying my FPV 5" iFlight Nazgul5 6s quad with my new DJI Goggles.... This is professional Hand-eye Coordination TO THE EXTREME!!!!!!! HOLY SHIT!! RESPECT!!!
@mithrandir1313
2 жыл бұрын
Great Video!! thanks!
@lucywucyyy
3 жыл бұрын
ive seen the original vid of that glider going 500mph, id love to see it break supersonic one day
@speedbird3955
3 жыл бұрын
I used to live in Glendora and flew gas powered RC planes, but there was a school in Covina not far from me where the glider guys , including Joe Wurts, would meet on the weekends and I would stop by every now and then to check it out. I never did get a glider, but now I think I will. I think he still has a little store in Covina that he sells gliders from, though I believe it is mainly a online business.
@magnusdanielsson2749
3 жыл бұрын
Really cool and super nerdy 👍🙂 They need to go the ”south korea route” and train teenagers to fly the planes 😁
@franklinpenaranda8520
3 жыл бұрын
Excellent. Now I have another piece of the puzzle...
@danielchivdjian1562
6 жыл бұрын
I have one of his plane called kinetic and it’s awesome
@johnnyllooddte3415
3 жыл бұрын
why cant you film it in slow motion..i dont see anything
@ModellpilotEU
3 жыл бұрын
THANKS, Spencervery impressive you have done, ... super sonic the next step, isn't it. Go for it!!! niece greetings from berlin germany.
@L1m3r
3 жыл бұрын
@TNG - Please no picture-beside-picture. Use PiP instead and get some pros: 1. Presentation fills the whole screen. 2. No unnecessary black bars. 3. Text is actually readable. 4. Less than half the movie file size. 5. Center of screen and presentation align. And most presentations have enough "empty" area on many pages where the shrunken down presenter PiP can be placed.
@sicktj
6 ай бұрын
Would love to hear him talk about how to (or what prevents) scaling this to fit a human inside. A way to reduce the g forces to a reasonable level of sustainable.
@IncendiaHL
3 жыл бұрын
My god. If only I had half of this guys processing power.
@salmiakki5638
3 жыл бұрын
I don't think what they modelled and run is anything Uber intensive in terms of processing power required. It's a lot of knowledge on their part to set those simulation and analyse them, that's for shure, and that's what I envy them. But I think the graph shown are all "only" 2d airfoil cfd and simple rigid body models of the aircraft with thin airfoil, nothing that would take much benefits form detail that can be solved by a night (at most) of number crunching by a typical dextop pc, I'm guessing. ... I can't say anything about that bit done at Strutgard university, that could have indeed took some cpu Time , i just don't have a clue
@georgeslater2875
3 жыл бұрын
Could use the drag to your advantage to omit fluttering, back pressure inflation bladders, to strengthen rigidity. Could use the laminar shockwave, convert it to piezoelectric discharge, have predefined cavitations, think longitudinal and equilateral, channel the static discharge, give spark to upgrade the fuselage to a ramjet. Just a thought.
@SVSky
3 жыл бұрын
Energy producing kite that, instead of free wind stream, dynamic soaring. You could generate tremendous electrical power with just a "kite" and an anchorpoint on the peak of the hill.
@TheJustinJ
9 ай бұрын
... The anchor point replaces the dead air zone.
@bludger13
10 ай бұрын
Never hear about it before. Absolutely exciting about fastest rc is a sailors.
@scottcates
9 ай бұрын
Good video
@stonelaughter
Жыл бұрын
Could this technique be used by pilots of full-sized gliders to recover when they get "behind the hill"? I don't think for a minute we could get full scale gliders flying at these speeds (the G loading would kill the pilot even if the glider survived) but the technique could be used as a life saver on a smaller scale if it were taught properly?
@Jetstreamer0
5 ай бұрын
Incredibly cool! I have access to a 3D high-fidelity aerodynamic shape optimizer with laminar-turbulent transition prediction. I wonder what airfoils we could generate in order to delay the drag divergence Mach number.
@keithfreeman5204
6 жыл бұрын
Let's see...The Sweep. For every 5 Degrees of sweep equals 1degree of dehedral, so 15degrees of sweep would equal 5 degrees of dehedral, which is about average for today's swept winged aircraft whether Model R/C or full sized. My Delta has a 31 degree sweep. The wing/body is built Split Rib Fashion from 1/4 sq. light pine straight grain stock. 1/4 in.Square. Round stock from the hardware store formed the Leading Edges and the Trailing Edge. Wing thickness at High Point is 2 inches. Titebond and Super Glue used and epoxy for the engine mount and the Main landing gear plate. Covered with MonoCoat. All up weight about 4 1/2 pounds w/ Fuel. With a .25, 25 foot ground roll to lift off. With a .46 about 3 feet. It seems that the faster it goes the more stable it handles. Now what I'm thinking ,with the same spit rib build and if the thickness was reduced to about 1 in. take out the engine, fuel tank, landing gear, control it with mixed two channels, as a slope flier might be interesting.
@TheFlyingPlectrum
6 жыл бұрын
Area rule and super critical aerofoils.
@OliveR-sz3zz
Жыл бұрын
Could you one day ask the Slow Mo Guys for a good quality video ? The gliders moves so fast we could barely seen it...
@rendziero
3 жыл бұрын
I'm here after watching the world record video from yesterday 😊
@jerryboics9550
3 жыл бұрын
39:12 "well you can see what happens.." Yeah, you escaped death by a couple of meters...
@xiphosura413
9 ай бұрын
I remember my dad doing slope soaring with custom designed foam flying wings in NZ in the 90s, I wonder, have you guys considered flying wings for DSing? Would have the sweep but also favourable weight distribution & much lower drag.
@jukkatakamaa7274
5 жыл бұрын
Awesome !
@teddynebel
3 жыл бұрын
I’m now going to do this in my real glider.
@Johnbobon
3 жыл бұрын
😂
@utubeaccess7
3 жыл бұрын
I'm afraid you would Vne on the first orbit.
@ianhelyar6383
3 жыл бұрын
@@utubeaccess7 my thought exactly...
@sblack48
3 жыл бұрын
And people think that when you fly through a wind gradient it can’t affect the model’s speed
@andrewroberts707
3 жыл бұрын
Fascinating
@awuma
7 ай бұрын
Actually, conventional front-side soaring has broken RC model speed records, faster than powered models, since the late 1970's, when composites were first used in models (e.g. CF and Kevlar). The Swiss and Austrians pioneered this, packing fairly small gliders up into the Alps and flying them there. By 1979, and emphatically in 1981, composites came to dominate in the multi-task F3B RC glider contests, leading to a re-writing of the rule-book, which still led to composites completely dominating good ol' wood in competition flying by the 1990's. Ditto for the discus-style hand launched lightweight gliders (F3K) invented circa 2000. Only in the mid-2010's was a class invented for largely wooden Hi-Start launched thermal gliders (the 2-metre F3-RES or F3L class), to retain the simplicity, low cost and peacefulness of RC soaring as it was before the 1980's. It is quite popular in Turkey, Germany. Holland and parts of the US. The design which inspired the development of F3-RES gliders was Mark Drela's 2-metre Allegro-Lite, which most F3-RES designs resemble quite closely (see Charles River CRRC website archive). Dynamic soaring is an amazing development. This talk beautifully explained the fundamental aerodynamic concepts involved.
@eugeniobb
9 ай бұрын
seagulls have been doing this trick for a long long time
@rlbunce
7 ай бұрын
Is anyone looking into using Dynamic Soaring idea in design and placement of wind turbines to generate electricity?
@IDNeon357
Жыл бұрын
Albatross don't sleep the way we think. Only half the brain sleeps while the other half remains awake to perform tasks. The albatross then switches which half sleeps.
@kene6954
Жыл бұрын
So the song is "highway to the danger zone", but actually you go through the danger zone to get to the highway?
@jgeur
3 жыл бұрын
i apologize up front for this comment because i don't know what i'm talking about but...it seems that the current aircraft design is almost fully optimized so any great leap forward will probably come from new materials (graphene?) or maybe the incorporation of an AI controller (yes, that would take the fun out of flying!). so what about optimizing the landscape? from the videos it appears that the places where the flights take place are quite variable along with atmospheric conditions. could something be done to reduce environmental variables? i guess i'm suggesting building a racetrack with the ability to change aspect ratios of the "hard" surfaces in real time. you could also incorporate "nets" into the design to "gently" catch the gliders when something goes awry. anyway, my two cents...best wishes and good luck!!
@keithfreeman5204
6 жыл бұрын
What about the Delta Wing Platform? I built and fly a Delta Blended Lifting Body, 48x36 inches, with a OS .25 dbbl. It is almost twice as fast in level flight than the other ships at the field that are flying planes with .40 and 60 sized engines. It is because the delta is just so much more aerodynamically clean. Without engine and the right CG this might be something you might want to look into.
@elixir220
6 жыл бұрын
this is just a guess but i would say the sweep in delta wing is pretty unstable at high speed tight turns. which is what you need in ds
@robinbennett5994
6 жыл бұрын
Deltas are fast in a straight line, but really draggy in tight turns.
@craigwall9536
4 жыл бұрын
@@robinbennett5994 You beat me to it.
@myotherusername9224
3 жыл бұрын
"I built and fly a Delta Blended Lifting Body" If you built it from plans, do you have a link or a name or some way for me to find plans ?
@TheJustinJ
9 ай бұрын
Flying wings aren't the solution to supersonic flight. Wing sweep is. It's a subject beaten to death by the who's who of aeronautica. The problem, as he mentioned, is stability and control in low speed flight. Its also a structural problem to sweep wings enough to gain an advantage while maintaining very high aspect ratio means the tips are well aft. There is a solution to this, in a unique planform, but I wont disclose it here, haha.
@ierson4880
7 ай бұрын
How can we use it to make electricity. Like a electricity miner.
@johnvassoura
3 жыл бұрын
Best death by power point i seen
@oisiaa
3 жыл бұрын
How many horsepower does a glider like this extract from the air in order to fly so fast? Must be over 50hp on a tiny light machine.
@miketaylor3947
7 ай бұрын
Hard to imagine that it's hand flyable. Must be a good repetitive rhythm with only small corrections necessary once the bird gets up to speed.
@erikcrins
6 жыл бұрын
Great video! Nice to ee all the work and theorising that goes into reaching these speeds! When getting close to mach 1 would a delta shape be a good idea?
@go2cloudbase
6 жыл бұрын
I had the same thought, delta wing instead of swept wing. Wonder what DP thinks about this.
@d.jensen5153
6 жыл бұрын
He talked a lot about the need for high aspect ratio wings for efficiency. A normal delta wing has a horrible aspect ratio. It makes a terrible glider wing.
@myotherusername9224
3 жыл бұрын
Well, the energy involved is so much greater than with a normal slope soarer, maybe once you get into those high speed regimes, a delta makes sense (think of Concorde)... if you can get there at all in the first place by starting out in the slope soaring regime.
@johnaweiss
6 ай бұрын
I'll be impressed when someone breaks the sound barrier. 767 mph, 1234 km/h or 1,125 ft/s
@peterfynn
8 ай бұрын
You mentioned the 'T' tail configuration, but did not amplify why it has an advantage over the classic fuselage mounted stabiliser and elevator. Also is your horizontal stab a fixed stab or is it what I call a 'full flying stabilator' ?
@BrisLS1
3 жыл бұрын
Cliffs Notes? You fly with the wind half the time, but in still air the other half, so you keep generating more speed? Versus flying always against or with wind, you are eventually going to lose all your air speed and drop.
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