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sll914
Приєднався 4 січ 2007
Відео
Sweeper DP Maiden
Переглядів 3,9 тис.9 місяців тому
Maiden flight of the all new Transonic Sweeper DP at Weldon, Ca. Winds 30-38mph. Looking forward to more wind with this one!
Cliff Sloping & Flat Top DS
Переглядів 53911 місяців тому
Roughly 30mph winds but enough vertical lift to fly rocks and sticks! Even a little bonus flat top DS. I couldn't make what I think would be more ideal upward sloping circuits due to turbulence and combat wing performance... Fun stuff!
New World Record RC Airplane Speed 548mph
Переглядів 1 млн3 роки тому
Strong Santa Ana conditions on Jan 19 2021 provided enough wind for Spencer Lisenby to bring the dynamic soaring speed record back to its birthplace of Parker Mountain, CA. Wind gusted to 65mph and temps were 45-50F. This flight beat the previous record set in 2018 at Bird Spring Pass by only 3mph. Filmed with a Gopro on my head while flying. Best viewed on a large screen with high resolution. ...
Transonic Light Camp 9 Jan 2020
Переглядів 6 тис.4 роки тому
A good day of North winds at Camp 9. Somehow the Gopro got set to ultrawide view...
Alex Lisenby Out Here On My Own Nov 29 2018
Переглядів 7195 років тому
Alex Lisenby Out Here On My Own Nov 29 2018
Woolsey fire Super Scooper Nov 12 2018
Переглядів 4,8 тис.5 років тому
Dropping on active fire on West side of Malibu Creek Canyon just North of the tunnel. They made a bunch of drops like this plus alot of support from sky cranes running laps down to the lagoon.
Woolsey Fire Tanker Low Pass Drop
Переглядів 7 тис.5 років тому
DC10 I think making a low pass behind another guide plane. This is just NW of Camp David Gonzales around 4:30 Nov 9. I think the Salvation Army facility is right about there... Tankers did an awesome job yesterday, THANKS 😁
FASTEST RC AIRPLANE IN THE WORLD! Transonic DP -- 545mph!!
Переглядів 305 тис.6 років тому
Most folks don't realize that the fastest RC airplane is a glider with no jets or motors. Here Spencer Lisenby sets a new record speed of 545mph with the Transonic DP using a flying technique called Dynamic Soaring. en.wikipedia.org/wiki/Dynamic_soaring www.dskinetic.com/
Dynamic Soaring at Vincent Hill, CA
Переглядів 1,2 тис.6 років тому
Got a Gopro 5 for my Bday so I wanted to try it out and get settings worked out. Shot in linear mode, will try zoom next time out. Looks like I had it aimed a bit high...2m Kinetic DP flying at Vincent Hill in low 300s. Plane weight ~75oz.
The Dump LZ Spring 2015 Calabasas, CA
Переглядів 5359 років тому
A nice spot to DS in Santa Anas especially in the spring when the grass is tall and lush making the landing zone as good as it gets. I've flown my 85oz K2m here to 232mph. We've seen wind speeds in the mid-high 30s. Fun tight circuit good power when the direction is right (NNE-NE) and just an overall pretty spot considering its a landfill ;o). Park on Las Virgenes Rd in a small dirt lot just no...
130" Kinetic DP at Weldon, CA March 20 2013
Переглядів 77411 років тому
130" Kinetic DP at Weldon, CA March 20 2013
2.9liter 914/6 GT at Road Atlanta In-car camera
Переглядів 2,1 тис.14 років тому
2.9liter 914/6 GT at Road Atlanta In-car camera
New Dynamic Soaring World Record -- 392mph
Переглядів 377 тис.15 років тому
New Dynamic Soaring World Record 392mph
100" Kinetic Sailplane 357mph Dynamic Soaring World Record
Переглядів 210 тис.16 років тому
100" Kinetic Sailplane 357mph Dynamic Soaring World Record
Well Spencer, you know what to do next… make a video of the shockwaves over the Transonic DPs swept wing… 😉 Too much drag? Probably… 🧐🤭 Keep on pushing the limit…✊ Regards from the Canary Islands 🏝️
I love it. Of course you sit next to the wing! Super cool!
Oh My God! What other incredible principles are waiting to be discovered?
Ya un nuage en forme d'avion.
I don't understand
what the fuck...
Only saw something a couple of times , sure it was there ?
You used à snapflaps? Congratulations !
This plane uses the RG14 airfoil which doesnt improve much with snapflap so I was not using it in the video. The movement of the flaps that you can see is a combo of blowback and inertial forces as the plane crosses the shear layer at around 40G of acceleration. These days we have much better servos, supports, and linkages that prevent these movements.
@@sll914 OK!!
Please make a go pro video of your hand motions on the controls....that would be interesting to see.
ua-cam.com/video/XatM246UetM/v-deo.htmlsi=IZnHRYSYg6PzyeZ7 This one shows some of the action...
And?.... Have you flown the ridge in these conditions?
Yes but only with a foam JW because I didnt find a decent landing spot for something composite
This absolutely blew my mind! The fastest remote jet plane is not as fast! So I dug deeper into the physics of this and that is mind blowing as well.
Crazy that DaVinci noticed birds do the same thing way back then.
I should have paid more attention to my science classes in school cause I am clueless as to how they achieve these speeds. Simply amazing.
I am stumped at the physics for tapping so much energy from a wind.
en.m.wikipedia.org/wiki/Dynamic_soaring#:~:text=As%20drag%20is%20slowing%20the,wind%20gradient%20lessens%20with%20altitude. A windmill harvests energy by slowing the wind, thus robbing it of some of its kinetic energy. A dynamic soaring glider does the same by turning hard with its belly to the wind, slowing the air and taking some of its kinetic energy.
Can i get a shoutout
How does the wings not rip off?
You need extremely reliable gear to do this. It could kill a human easily when crashing on it.
MKS Servos and Hitec Radio...
There's still a good road to get up there? Last time i was there road was very sketchy.
The road is doable with 4wd, locking rear diff, offroad tires, and moderate clearance
Another awesome video filmed at Parker Mountain. I learned to fly slope here years ago from the legendary Pat Bowman. One of the creators of DS flying. Seeing this in person is mind blowing.
wow it is really pulling around 100G? that's really impressive, how does it stay together?
Why not strap a fpv system to it which will be able to make for a longer straight run and I would guess for a faster speed, course it would be putting more weight on the plane.
Extra weight isnt an issue but the additional drag of a camera and antennae would be. We actually dont want any straight runs. For max speed we need to stay at max L/D...
Radar should have been backed up with GPS.. .
We have found radar to be very reliable... No commercial GPS will work at our high Gs. If you're offering me a military gps unit that will perform and fit inside my glider, I accept 🙂
@@sll914 G forces on a GPS!??.. . Do what??_______
@bobadingo3092 Yes, we have tested GPS. You can google it if you want to learn more. Consumer GPS can't process the signals fast enough when acceleration exceeds 4-6G. If it could, it would be used by bad guys to guide missles, etc...
@@sll914 refresh rate is 4-6 times per second how much do you need!?
@bobadingo3092 not so much a matter of sample rate. Many are around 10hz which would be decent. I think it's more an algorithmic issue where the unit struggles to determine the correct position solution because the accelerations are extreme...
Were you the speaker at TNG lecture on dynamic soaring?
Yes that was me
@@sll914 thank you very much. I found your lecture very interesting. Question is it possible to get the dynamic soaring effect flying a kite on similar terrain?
@poione42 because a kite is anchored to ground by the string, it is already taking full advantage of the deltaV between wind and ground. Dynamic soaring is only needed by vehicles that are not able to be in two mediums with different velocities at the same time.
@@sll914 thanks for the wisdom. Looking forward to seeing more record runs. Good luck 👍
Just curious. How did you measure the speed? I couldn't find any handheld radar gun that goes as high as 500+ mph. As a matter of fact, I didn't find any radar gun that goes that high. Did you use onboard GPS? If so, what sensor? Couldn't find any that goes over 250mph... Thanks.
stalker.sport/pro-ii-series/ Good to 900mph!
@@sll914 Damn, Google let me down again! LOL. I couldn't find anything going that high! Anyhow, thanks for the fast reply and Happy New Year!
I watched the whole thing and never saw the glider 😂😂
No turbo fan noise no fun
Have to disagree. The aerodynamic noises you can hear without a prop or other noise in the way are amazing!
Riverside?
No, it's in Agoura - not a great spot but this was my son's project for school and he needed to get it flying ASAP.
School project, very cool
I really want to see one of these dive into the ground at max speed.
He definitely has your hair 😁
Nice. Wish they're weren't so many rocks at that spot, though.
Good job kid. Glad to see young ones flying RC. Keep the modeling fire going. I just realized it’s Spencer you tube! lol that kid will be ok.
What hill?
Always great to see another combat glider. Get some of your friends into this and try to bash each other out of the sky. I think it's the most fun thing in the world to do, and it will really improve your flying skills.
Wow, the forces on the airframe must be colossal. Great job with the record!
this is insane!
Its always the same, when i ask someone which RC plane is the fastest?, people every time say of course jet plane. But its the glider without a motor 🤣
12 years after posting, this is just nuts! The video quality, for what tech was available that was small enough, that's pretty impressive. Would love to see this with modern HD FPV at higher frame rates, it'd be like sitting in a Pylon Racer at Reno.
Pitier, je sais que vous gagné de l’argent avec vos video . Mais quand meme , Quand ferais vous du 1000mph ? et du 2000mph ? Vous prenez vraiment les gens pour des cretin et ca marche helas
en.m.wikipedia.org/wiki/Dynamic_soaring
G forcez ??
Max accel ~ 80-100G
What the heck???? That's the COOL'est thing I have seen in ah lonnnng time! ...Unless the UAP tictacs are real, then this is a close second place. 😆
When steering the plane straight ahead for a second means it immediately flies out of sight.
You are amazing!!! You really are Americans!!! I expect you to approach the limit of sound with the arrow-shaped wing! I really admire you because I completely understand what you are doing... Greetings from distant Bulgaria!!!
Great flying!
Why only 548mph? You can speedup video more and get even 1000!
882 Km/h 🤯🤯🤯
What is its straight line speed without come out of a loop and a dive, I wonder?
The only thing more amazing than the fact that this works, is that somebody actually managed to go faster than this. That thing is ripping through the sky so hard!
Impressive ! Is there an equivalent in full scale glider ?
Not really. At full scale, the structural problems are overwhelming. Also, no manned potential due to extreme high Gs
I wonder if it's theoretically possible to break the sound barrier with one of these.
I fly RC it's an amazing hobby but flying in the wind is difficult at 30 mph, flying standing up in 70mph wind is near impossible and to top it off try flying a RC plane in it... Now add the fact that the plane is doing 500+ mph. This is not average Joe type shi! It's mind blowing and superhuman! Not but respect for your skills!