I see pelicans doing this over the waves sometimes it's incredible how how far they go without flapping once. Sweet demo!
@TURST67
5 жыл бұрын
I saw flying fishes gliding over sea for 20-30 meters without flapping anything, I thought I was dreaming.
@shmaknapublar
5 жыл бұрын
Pelicans use ground effect and a phenomenon called dynamic soaring. When you see them pull up and turn into the wind before heading back down between the waves, they are gaining a very slight amount of total airspeed due to the different wind speeds in between the waves and at the wave crest where the air is being compressed. You should check it out if that kind of thing interests you. Rc glider flyers have managed to break the 500mph barrier using similar techniques but on mountain tops instead of ocean waves.
@shmaknapublar
5 жыл бұрын
@Michael Nickname Yep. The real max airspeed number is actually higher than that but the point at which they take the reading is the slowest part of the circuit. The formula they came up with for calculating the max speed from the reading on the radar gun should put it between 560 and 600mph. The guys doing this are at the top of their game in regards to flight skills, building skills and aerospace engineering ability. kzitem.info/news/bejne/z6xtk42Dbamfom0
@robraver
5 жыл бұрын
@@shmaknapublar thats right, there are some good clips on Ytube of the RC gliders doing this. I fly RC slope, used to fly RC helis and powered planes...which were great fun...but RC gliding is in a different league:)
@johnbalas7759
3 жыл бұрын
I love seeing my favourite KZitemrs in the comment sections of quality videos deep in the recommendations well
@fifealganaraz7466
2 жыл бұрын
I was 40 years old, learning with a experienced instructor in an aluminium glider made in Chekoslovaquia ( Blanik) . I was aproching final and he talked to me and made me rest some time away from the landing field. Before the landing field there was a wired fence for cows ( in Bahia Blanca, Argentina ) . He then asked me if I think that we will managed to arrive with enough altitude to surpass the fence... I told him that I thought we would NOT ... He told me to try my best, and I did it. We flyed up to where the fence was and we were already beneath (the fence is 1,20 meters high). So we were flying less than that ( may be 0,70 meter.) I kept cool, knowing he was teaching something I didn't know. Just before the wire fence he said " just skip the fence and get down again" and we did it !!! ( I was absolutly astonished, gratefull and very happy to learn in practice this theory.) Now I am 74 ...
@stankoproduction
5 жыл бұрын
Here we are, back with another episode of why the hell is this in my raccomendations!
@MD-wq2ly
5 жыл бұрын
Same
@nexis9745
5 жыл бұрын
Yes, but that's cool
@tahriazel8957
5 жыл бұрын
Lmaook
@m.g.kroger
5 жыл бұрын
Because you watch and comment. KZitem's bot sees this a recommends again. 😉
@b2theitch477
5 жыл бұрын
Sand +ä
@peteh5862
5 жыл бұрын
Ground effect is where the air below the wing is compressed and creates lift. It happens within the height of the wingspan.
@KS-tf6nw
5 жыл бұрын
Correct explanation, no effect on drag.
@notliquid1448
5 жыл бұрын
Real engineering made a great vid about this
@olivereasley2416
5 жыл бұрын
K S thats not correct. Induced drag is reduced in Ground effect.
@CipherVR
5 жыл бұрын
It does however effect induced drag
@pdebuck1
5 жыл бұрын
The air is not compressed. Compressibility of air is negligible under mach 0.3. Lift in increased and induced drag is decreased because of the proximity of the ground.
@thermomeds
5 жыл бұрын
That caterpillar on the windshield really held on for its life
@sebdan3992
5 жыл бұрын
Its a small cord
@kirederflednes3998
5 жыл бұрын
@@sebdan3992 dont talk shit
@iamf6641
5 жыл бұрын
@@sebdan3992 its a running joke for years amd you ruined it
@shoebgouri2860
5 жыл бұрын
Lmao😂😂😂
@ghexhsdhujvcfbsdhucvrej5452
4 жыл бұрын
damn glider jokes
@forfengeligfaen
7 жыл бұрын
0:31 Hate it when that happens
@connorbeckmann2981
6 жыл бұрын
Yeah that seemed kinda sketch
@alexaxel504
5 жыл бұрын
what does it mean "I flew 85W..." i'm not a native English speaker)
@jessevandemeent8962
5 жыл бұрын
@@alexaxel504 85W is the callsign (let's say, the name) of another glider he flew a while ago...
@RetroGamerVX
7 жыл бұрын
Ground effect is because the high pressure air created under the wings is sitting against the ground, creating a cushion :o)
@Simon-gg1gx
7 жыл бұрын
RetroGamerVX it’s because the extra high pressure air caused by the air bouncing off the ground and striking lower surface of the wing, adds to the pressure differential between the upper and lower surface. Ie greater static pressure (on a surface) below. It’s not the cushion itself because weight is still acting downwards so it’s always explained by the differential.
@brucebaxter6923
7 жыл бұрын
No room for tip vortices. Lol
@themechanic568
6 жыл бұрын
Ground effect has nothing to do with a cushion of air. There is less drag due to WTV's being cancelled out by the ground below reducing drag. This is why airlines started adding Wing tip generators. They effectively reduce drag on the linear axis of the wing root allowing a more efficient wing
@brucebaxter6923
6 жыл бұрын
K. Bierman Oh dear, quick lesson on aerodynamics. The glider flies by accelerating an Ovid cylinder of air roughly equal to 1.4 times the wingspan. This mass of air has the downwards momentum of the time the glider was in it, plus the wasted energy of the tip vortices. Now, ground effect. Close to the ground the air cannot gain a downwards velocity so the energy that accelerated the air down is no longer lost, plus the diameter of the tip vortices is reduced from the 1.4 span effective area. So, saying the air under the wing (and more so in front of the wing) is somewhat accurate as it has the force of the gliders weight acting on one side and the ground pushing back on the other side instead of free moment.
@bushpilot-bm3kf
6 жыл бұрын
Over water we call it the wave effect. a good way to beat radar and conserve fuel by allied bomber's in WW2.
@CyberEditing
7 жыл бұрын
Superb demo
@Berkov1
5 жыл бұрын
Soviet Union build huge aircraft on this effect, as far as I remember, they fly in 10-30m above ground or sea and lift amazing amounts of cargo.
@torbinzix1
5 жыл бұрын
Ekranoplan or Caspian Sea Monster
@korolevsergey1001
5 жыл бұрын
torbinzix1 “Ekran” in russian is a “screen”
@lil__boi3027
3 жыл бұрын
@@torbinzix1 they also made the lun class ekranplan that is armed with with sunburn anti ship missiles
@lyingcat9022
2 жыл бұрын
In Soviet Russia, ground effects YOU!
@imapseudonym1403
6 жыл бұрын
I used to fly a Schweizer SGS 2-32 many years ago. Your aircraft has a glide ratio we could only dream about! Great video, thanks for posting it, that really takes me back.
@unfixedcarp8039
6 жыл бұрын
I am training on that aircraft currently.
@noleftturnunstoned
5 жыл бұрын
Birds skimming the water is the best demonstration of this effect.
@eddunne917
5 жыл бұрын
Thank you. I wasn't looking for this kind of video but it was a random pop up in my feed and was very enjoyable to watch. I am now looking for a glider flight near me.
@logmeindangit
4 жыл бұрын
Some rainy day when you want to go for an hour-long flight while sitting in your living room, grab a drink and a snack, enter THIS pilot's name in your search bar, and pick one of his flights to stream to your TV. Some may find it boring, but I find it exhilarating. He slides through the sky riding lift from ridge to ridge, and covers hundreds of miles. There is no crash, no burst of flames, and no accompanying music, just the raw experience of glider flight in the amazing Rocky Mountains. The beeping of his barometer is an emotional thing, triggeringbexcitement when chirping a high tone and concern when making a low tone. It sounds out if the glider is rising or sinking. On a good TV , you can see the gauge at the upper left of his dashboard, which also shows graphically his rate of climb or descent.
@stevef4010
3 жыл бұрын
@@logmeindangit I've been there for a few days. Random video, now contemplating a demo ride and getting licensed. Club 30 min away. Had no idea flights could go so long, so high. Tonight searching for solutions for a full bladder...lol
@jasondepieri2485
6 жыл бұрын
this is why they built the ekranoplanes... right?
@Cookiecutter160
5 жыл бұрын
@@ВиделиЗнаем-б8б да абсолютно!
@_AQUILA
5 жыл бұрын
@M. Vendel commies.
@steew8877
5 жыл бұрын
@M. Vendel Communists. From the Soviet Union.
@M_Faraday
6 жыл бұрын
This is great! Thank you. One thing though: ground effects are not a reduction in drag. The air flowing between the wing and the ground flows according to the Venturi effect, increasing air pressure under the wing. That's what lets you float.
@Twobarpsi
5 жыл бұрын
It was my understanding, that ground effect is created when the wings are close to the ground, they create a high-pressure Zone using the ground to push back a force to the wings, making them more efficient compared to open air.
@SVSky
4 жыл бұрын
Nope ground interrupts wingtip vortex that causes induced drag to be reduced.
@Twobarpsi
4 жыл бұрын
@@SVSky interesting...🤔 but I will look into it. I would compare it to how a dolphin surfs a bow wave.
@JohnyMacarroni
6 жыл бұрын
Outstanding gliding technique I must say sir, the aproaching to the runway was so smooth. You could land the moon!! Greetings from Catalunya!
@rouslant
3 жыл бұрын
Nobody can land the moon with a glider. Nobody did land the moon anyway. Ever.
@sichere
6 жыл бұрын
On a side note - The legend goes that the Buccaneer can actually ride on its own shock wave at low level, and naturally stays at the height where the pressure from the wave counteracts any tendency to drop lower - this ground effect was about 18 ft and it became the operational height for interdiction at over 600 knots. A USN admiral who had encountered the Buccaneer during joint Nato naval exercises previously and remembered the welcome they got as the USN fleet came into British waters. A flight of 4 Buccaneers went out as a welcoming party and requested permission to do a fly by "over" the US carrier. Permission granted, nothing airborne over the carrier, all clear, now fly bys were usually a tight formation pass over the ship or fleet, not this time, the four ship Buccs split to send one down each side of the carrier at deck height, the other two straight along the flight deck at very low level and high speed and if accounts are correct, one did the pass inverted.
@Mike...p
5 жыл бұрын
You were the pilot in command and you refer to ground effect as magical. You know downdrafts and micro bursts are just angels farting.
@hopefilledsinner3911
5 жыл бұрын
Really? If an angel farted it would blow you out of the sky. People underestimate angels!
@kingt.hawkings32
6 жыл бұрын
Many years ago for my birthday a friend gave me a $50 gift certificate for a tandem flight, at llano ca. It was great, it sounded like we were a jet instead of a prop job, the instructor said do you want to do a loop, and without hesitation said sure he said watch the G- meter in front of me, we pulled 4.9 G's .. I could almost imagine now how military fighter pilots must feel, then the landing was scary because he came in just like this guy scrapping buts as I felt! I never never been that close to the ground on a landing ,and I hoped this guy knew what he was doing! Loved the experience! So I purchased a gift certificate for my dad and he loved the shit out of it! This is a bucket list thing , do it if you can! I've also skydived 30 times in California City!
@Designandrew
7 жыл бұрын
ground effect is a long nice cruise into a short stall
@robweiler6711
Жыл бұрын
Great demo. Ground effect is a beautiful way to maximize flight efficency.
@joelclark4979
7 жыл бұрын
You should have titled the video "Ground effect, with NEAR MIDAIR FENCE COLLISION !" :P
@BrunoVassel
7 жыл бұрын
Haha - I knew it was there. Thank goodness because it was hard to see so I was glad to be looking for it. Thanks for watching.
@diyatakkar8631
6 жыл бұрын
Subscribe me
@FloccinaucinihilipilificationD
5 жыл бұрын
Awesome save with the landing gear!! 2:37 I've been binge-watching your videos and the way you handled and control your girl is damn impressive! 99% of people who drive are nowhere near 'as one' with their cars as you are with her. It is a pleasure to watch.
@CristiNeagu
6 жыл бұрын
I think ground effect is a cushion of high pressure air formed between the wing and the ground. The wing itself has the same drag, but induced drag is lowered.
@philiplewis957
3 жыл бұрын
I scrolled down to see if someone explained this properly and this is it, to see the effect vividly google Ekranoplan kzitem.info/news/bejne/t26E221qpJp5oqQ
@natural-born_pilot
6 жыл бұрын
Thank you Bruno for this informative video. I was surprised at the distance you glided at that low altitude. I thought for sure you would touch down short of the runway threshold .
@BrunoVassel
6 жыл бұрын
Just shows you how amazing modern sailplanes (gliders) really are! I had so much confidence in what the ship will do that I was willing to put my butt on the line to show you. Go take a glider ride and see for yourself. You will be amazed! :) Thanks for watching.
@MatematicaTel
7 жыл бұрын
I saw competition pilots use this effect to approach the field, running low at high speed from 2 or even 3 miles out the runway. Very beautiful, but sometimes not so funny...
@abs15826
7 жыл бұрын
Jose Marmontel these finishes were discontinued for being too dangerous. There were fatalities, including among the spectators, who often gathered in front of the finish line to observe and take photos of the low flying gliders.
@blogengeezer4507
4 жыл бұрын
-Northern California, waiting for my 'ride', as landing glider was in G.E. too long. It raised tail, slid on skid, hit the restraint barrier chain link fence, damaging wing, far beyond end of runway. "No ride for you"... ;
@andreacriscuolo6434
7 жыл бұрын
Amazing!!! and the guy applauding for you at the end of the runway is the icing on the cake!!!
@hammerhead8318
5 жыл бұрын
That is pretty amazing. I thought you were going to run on a dirt runway because you were so low already, and without lowering landing gear.
@BruceHoult
7 жыл бұрын
Should have started at maximum 60 knots instead of 80! My usual ground effect demo is to do a standard approach to the start of the runway at 55 knots (in DG1000) and then at the last moment close the brakes and cruise on down to the far end of the runway.
@BrunoVassel
6 жыл бұрын
I hear ya - I actually had never tried this before so I didn't know how far down the runway I would get before the speed bled off. I was shocked I only lost 5 mph over that mile. I was totally expecting to bleed off at least another 15 during that time. Modern sailplanes still amaze me even though I have a lot of time in them. Fun stuff. I'll try the 60 knots at the end of the runway next time. Take care, Bruno
@Qartoffeln1
7 жыл бұрын
Oh boy... I'm so looking forward to learning to fly next year. Great videos, Bruno!
@beni_Silva
2 жыл бұрын
How is it going now??
@ignacybasak2078
Жыл бұрын
Fast calculations: 24 sec over airstrip (before pulling up for landing) with speed decreasing from 75mph to 70mph gives around 780 meters flown. 75mph to 70mph is a loss of energy that is equal to 7.2m loss of altitude. THAT GIVES A GLIDE RATIO OF 106! Note that changing speed loss for eg. from 74 to 70 gives L/D 140 ;) but glide ratio is for sure bigger than 100 which is still awesome
@duderino1950
6 жыл бұрын
Years ago, Boeing had a huge cargo plane on paper, perhaps even built a prototype, called the Pelican that flew on this principle. The intent would have been to move many tons of freight over the ocean, flying twenty feet or so over the water in a huge plane that would require very little fuel, with a range of many thousands of miles.
@Alex-us2vw
6 жыл бұрын
Wasn’t that a Soviet experimental plane? Think it was called the Caspian Sea Monster.
@someguy4915
6 жыл бұрын
That was an old soviet design to carry troops, tanks and perhaps even short-mid range nuclear weapons to American shores, you can still see one of the devices sitting in a yard near Moscow, rotting away...
@aerohk
6 жыл бұрын
It was a failed experiment.
@aerohk
6 жыл бұрын
@Kade Roder I meant that Soviet ship was a failure and never entered service.
@robraver
5 жыл бұрын
I remember an article in Popular Mechanics about the Boeing project. They usually design them to fly at higher altitude to cross land and other obstacles.
@aaaaaa69420
5 жыл бұрын
That poor caterpillar on the windshield just had the ride of its life
@nicholasjohnson3542
3 жыл бұрын
When the floor is lava and the glider knows it.
@danielstolte3492
6 жыл бұрын
Very cool. I had no idea of this effect, and how it plays out in reality. And while I'm not anyone trained in any sort of flying business, I find it very enjoyable to watch a video of someone doing something that they're obviously very good at.
@suprvideo
6 жыл бұрын
See ground effect wiki for more detail. "This is caused primarily by the ground interrupting the wingtip vortices and downwash behind the wing. "
@BenTheSkipper
3 жыл бұрын
lol
@valerie80yearsago90
6 жыл бұрын
2:36 the magic begins. That is so sick haha. Nice demonstration man!
@acarp4766
5 жыл бұрын
"That was fun" aka that was close to dragging a wing into a light pole!
@WR_CTorch
8 ай бұрын
Dude would’ve made a great U2 pilot.
@ezvibe8310
5 жыл бұрын
i have some flight time in a mooney. exceptional airplane but due to the ultra efficient wing, they just dont want to land. there is some technique involved to land in a reasonably short distance. they get into ground effect and want to keep flying.
@adamey5935
5 жыл бұрын
EZ VIBE is it just me or do gliders scare the shit out of other power driven A/C pilots?
@adamey5935
5 жыл бұрын
EZ VIBE also, I would be interested to hear about the technique required to get that Mooney on the ground☺️
@FJDIAZ
5 жыл бұрын
Thank you for sharing your experience! :)
@pdr5926
5 жыл бұрын
@@adamey5935 Get the aircraft into reversed command flight when on the final leg; that is, nose high, high power setting slow flight. Reduce power and slowly pull up to lower speed until you both lose speed and altitude. At this point you're in reversed command. Add power to maintain your desired sink rate and watchout your speed, you don't want to stall.. Regulate speed with elevator input and sink rate with engine rpm (power).
@ezvibe8310
5 жыл бұрын
just to clarify...there is a technique to landing in a reasonable distance, but i never got it. lol
@ElRednaxela
5 жыл бұрын
The string is holding on for dear life
@casualguy3938
4 жыл бұрын
Its a caterpillar ;)
@ScottGaul
7 жыл бұрын
Great demo. Cool shadow at 1:47. I was about to correct you: You said ground effect decreases drag. I always thought it increased lift. Some online research tells me that it does both. It decreases wingtip vortex and lowers the angle of attack of the wings slightly. I guess I'm a bit of an aerodynamics nerd.
@EatsLikeADuck
7 жыл бұрын
Scott Gaul Yes you are and we're grateful for it.
@wgmskiing
7 жыл бұрын
When an aircraft is flying at load factor 1 (unaccelerated flight, as in not manuevering) the lift produced is always equal to the weight of the aircraft times the cosine of the flight path angle. Flying level in ground effect you have exactly the same quantity of lift as you would at 1000 feet, with considerably less induced drag.
@Flyingdutchy33
7 жыл бұрын
The actual physics concerning ground effect are quite simple: Above the wing is a low pressure area, below the wing is a relative high pressure area. What happens in flight is that the air will want to move from the bottom to the top over the wings edges. This is why you see vortices around the wing tips. It is also why planes have winglets at the wingtips. To prevent this air from rolling from underneath over the wingtip to the top. Whenever you get close to the ground, this rolling motion is interupted by the ground, therefor acting as a sort of winglet. So no, you're not decreasing drag, you are increasing lift, which makes you put more downrudder in to maintain altitude, therefor maintaining a lot of your speed. I'm oversimplifying this effect, but in a nutshell that's how it works.
@wgmskiing
7 жыл бұрын
Flyingdutchy33 the wing in ground effect doesn't produce more lift. If it did, the glider would accelerate away from the ground. This is a fundamental topic: if we are flying level, we are always producing exactly the same amount of lift regardless of speed, altitude, etc.
@GreenFillwood
7 жыл бұрын
I read it also squishes wingtip vortices making them actually bare against the surface and create lift
@aomanchutube
5 жыл бұрын
Ok since everyone is explaining what ground effect is, let me unexplain it. GE or ground effect is the perceived effect that the ground has on your wings through the air. It also effects ground squirrels and other ground animals and insects. Similar to ground beef, ground effect is delicious and nutritious. Unlike chemical based effects, ground effect is non GMO and gluten free. Relating to aeroplanes in general, the ground effect is very important because without the ground, there's not many places to go really. I mean water looks like water everywhere you go. Also the ground holds the air on top of it. The downside of ground however is that it is often very hard and dusty. A really real comment... I love the look of the cockpit.
@Cmoredebris
7 жыл бұрын
Can you calculate the reduction in induced drag in ground effect? The ASW 27B will do a 48:1 glide at altitude, but in ground effect with, maybe a 10% reduction in drag...53:1 ? For those who might not appreciate the performance of these sailplanes, that runway is 6300' long! Great demo Bruno, thanks
@TekAutomatica
6 жыл бұрын
George Dyer knocks out trailing vortex drag (induced by lift generation from wings)
@ASJC27
6 жыл бұрын
Easy to calculate if you know the height above the ground relative to the wingspan. At a height of half a span above the ground the induced drag is reduced by about 8%. At a quarter of the wingspan it is reduced by about 20%.
@pmacc3557
3 жыл бұрын
Nice clean smooth runway. Very fast
@slomorenga
5 жыл бұрын
Please do a vid about the funny hat all of the glider pilots wear!
@Akindone53
5 жыл бұрын
@juggliar A skull cap would be useless and a sombrero would be overkill.
@Alex-gh7cd
5 жыл бұрын
We all own one, i think gliding reduces your dress sense if I’m being honest
@RM-el3gw
5 жыл бұрын
Right? It's everywhere, yet I've never seen any comments on it
@mxcollin95
4 жыл бұрын
That’s nutz how efficient that glider is in ground effect! 👍 Cool demo.
@robguyatt9602
6 жыл бұрын
Great demo. I understand well how ground effect works. Same for Helicopters. But I am curious about your saying drag is reduced during ground effect. Perhaps I should google as you suggest. :) Edit. Just googled it. So much for my comment "I understand well.." LOL. So much more to it. I soooo love physics. :)
@arminmoller9927
5 жыл бұрын
Drag will be reduced. You need less AoA to maintain lift to staying in air. This reduces the drag. Of this reason the ekranoplanes were inventet . Look in Google vor russian Caspic Monster .
@BMSWEB
7 жыл бұрын
That was nuts :D loved seeing that low fast approach . . . what a blast
@ljfinger
7 жыл бұрын
Bruno, would you shoot a short video looking along the wing trailing edge showing what each of the flap positions looks like? I'm kind of wondering if 1 and 2 are reflex and just how deep landing flaps are.
@jacinshardlow2409
7 жыл бұрын
With only metres left. Well done. Good demo.
@sed8me69
5 жыл бұрын
Mate, stumbled across this and must say I thoroughly enjoyed the banter, tho most of all, nothing on a 2D screen has EVER made me feel that feeling, like I was Landing again. *Thank you*
@Sl4yerkid
6 жыл бұрын
Perfect stop though, good call stopping when you did.
@QuentinGrandin
5 жыл бұрын
Amazing demonstration, nothing better than practice
@F-Man
6 жыл бұрын
And when you apply this to the undertray of a race car, you get crazy downforce with virtually no drag penalty!
@honeydew5022
6 жыл бұрын
Ferrariman601 Ferrari..Eh? F1
@ukrje
6 жыл бұрын
Wrong. If this happens to a racecar they take off towards the sky, do some fancy flips and crash in a very bad way. In a race car, u want the complete oposite of this effect - Not a cushion of air on which you can ride, but a low pressure area, close to a vacuum, to suck you on the ground generating douwnforce and grip.
@HandlesSuck123
6 жыл бұрын
The Lotus T79 used ground effect to create more downforce.
@spookyshark632
6 жыл бұрын
It has the same name, but they're different concepts.
@HandlesSuck123
6 жыл бұрын
@@spookyshark632 Correct, the ground effects in the Lotus utilized the low pressure under the car and accelerated the air flow in order to increase suction towards the ground.
@nyosgomboc2392
6 жыл бұрын
Good demonstration. Also, the fact that the landing strip is black and the Sun is shining might help as well a bit.
@dianukensaja9894
5 жыл бұрын
Not someone on the ground to take video, that would be a good comparison.
@Kombivar
7 жыл бұрын
Much, much more intense than I expected - Awesome!!
@keroy4588
5 жыл бұрын
This is what also happens when a playing card is dropped flat on a flat table. Maybe an inch or so. I guess
@Britspence381
5 жыл бұрын
Cool video, Bruno, thanks! Gliders, so quiet, no vibration, don't have to yell 'Clear!' before take off. BTW, some people claim that Howard Hughes' 'Spruce Goose' never flew above ground effect during it's one flight.
@MaksimSF
6 жыл бұрын
Ekranoplan fly that way
@brettsgalaxyvids
6 жыл бұрын
There really is a ground effect! I knew it!!......LOL. Great demo Bruno. Thanks for bring us along again!
@joematthews3379
6 жыл бұрын
It's not less drag, it's more lift.
@SidestickPilot
6 жыл бұрын
Joe Matthews can’t tell if you’re joking or not.
@tasinal-hassan8268
6 жыл бұрын
How is it more lift if he is constantly floating and not flying? The cushion of air underneath the wings exert high pressure,so there's less drag.
@SidestickPilot
6 жыл бұрын
Tasin Al-Hassan there is no cushion of air. It’s the wingtip vortices being disturbed and not allowed to progress and develop that is happening here. It’s only a decrease in drag.
@tasinal-hassan8268
6 жыл бұрын
+@@SidestickPilot Can you show me a diagram or anything that'll help me visualise this?
@SidestickPilot
6 жыл бұрын
Tasin Al-Hassan google or KZitem Bold Method ground effect. Bold method explains everything very well they have diagrams and short videos to show the decrease in drag due to disturbance of the WTV’s.
@bristleconepinus2378
3 жыл бұрын
I used to love taking off almost immediately and following the tow plane down the runway until his wings started working.
@zoopop22
5 жыл бұрын
“Lower drag” wth lol
@cloudstreets1396
7 жыл бұрын
The wash that goes over the trailing edge of the wing is deflected by the presence of the ground effectively reducing the angle of attack which naturally reduces induced drag. That is what ground effect does. I had to explain this in depth for my CFI check ride.
@MorsDengse
6 жыл бұрын
You really shouldn't be wearing your dive watch, when flying ; )
@BrunoVassel
6 жыл бұрын
Haha - I need to know the time every once in a while. ;)
@randy3228
6 жыл бұрын
Rolex Submariner or Deepsea?
@theenzoferrari458
6 жыл бұрын
@@randy3228 he no answerin
@epicsave635
6 жыл бұрын
You are without doubt a great glider pilot.
@brianxavier8873
7 жыл бұрын
perfect...real perfect why do people enjoy nonsense like football when such stuff exist.??
@Maxumized
6 жыл бұрын
Yeah...higher order of thinking when you know kicking and throwing a bag of air is wasteful to watch. Don’t get me wrong...I still like a good competitive football game but let’s not leave our brain to waste on fanatical TV games
@hamishcampbell8789
6 жыл бұрын
Brian Xavier because football is easy to join whereas gliding requires more skill. Not saying that football requires no skill just the entry level of skill required for is gliding is much greater that foorball
@Cemitese
6 жыл бұрын
You can enjoy both...
@tedhernandez2714
6 жыл бұрын
Brian Xavier To answer your question...... people who love to live life to the fullest do this...... glider flying. I did it years ago. I'm getting back into the saddle at a nice young/old age. Nothing like it!!
@twingoliebhaber1873
6 жыл бұрын
Brian Xavier Luckily there are useful sports like soccer too.
@davidh.4617
4 жыл бұрын
methinks any "chaffcutter" engine powered aircraft pilot should take note. Firstly - there is no "go around" option. While yes, the "glide angle" differs ... Learn to bring any aircraft to a safe stop on whatever,any flat ground within the glide angle.
@polomarkos
4 жыл бұрын
0:46 very good manipulation of B and F signals
@KarlAlfredRoemer
6 жыл бұрын
The higher the ratio between the induced drag and the parasite drag, the more helps the ground effekt. When a glider ist flying fast, he has a low ratio between the induced drag and the parasite drag, so ground effekt can't helb very much. I think the main reason for your 'ground effekt' is the updraft of warm air above the hot runway and only a little bit of the real ground-effect. Can you repeat the same experiment at a time, when the runway has exact the same temperature as the environment? Perhaps at 7 o clock in the morning or so?
@EduEnYT
6 жыл бұрын
I was just thinking the same thing
@DaedricFaZe
6 жыл бұрын
It would work even better with the cold dense air providing more of a cushion/layer between the airfoil and the ground.
@crgonzalez08
7 жыл бұрын
Ground effect is created by the turbulent air from the tip of the wins call vortice, this air hits the ground and bounces back to the bottom of the wing creating a cushion
@JereForsyth
5 жыл бұрын
Am I a nerd if I think that's cool?
@billpennock1951
6 жыл бұрын
Wow. I haven't flown for a number of years but i would NEVER have been that low for the runway on final and then to run that far down was insane. I have felt ground effect but never to that degree. That was super
@thefake1219
6 жыл бұрын
Quelqu'un peut m'expliquer svp ?
@alexisbeuve8199
5 жыл бұрын
En gros il nous montre « l’effet de sol ». Mais si tu n’as jamais piloté un tout petit peu tu ne peut pas vraiment comprendre...
@illyonka5159
5 жыл бұрын
Alexis Beuve Ducoup c'est supposé montrer quoi ?
@alexisbeuve8199
5 жыл бұрын
illyonka que la portance augmente et que la traînée diminue. La portance c’est la force qui pousse l’aile vers le haut La traînée c’est ce qui freine ton avions ou ta voiture
@illyonka5159
5 жыл бұрын
Alexis Beuve Ah ok merci :)
@ethanlamoureux5306
5 жыл бұрын
@@alexisbeuve8199 Portance, c’est “lift” et traînée, c’est “drag”, n’est-ce-pas? Je ne savais pas les mots en Français. Merci!
@protonruffy12
5 жыл бұрын
Now I want an own airplane too and fly around by myself.
@AK_NoB_E8
5 жыл бұрын
Нихрена не понял что произошло
@Rich.ard72
5 жыл бұрын
Ground effect is pressure build up between the wing and the ground, nothing to do with making the wing more efficient/less drag.
@EricJaakkola
5 жыл бұрын
First time I've seen a glass cockpit in a glider.
@mqbitsko25
6 жыл бұрын
I started training in a Katana, which is just a motor glider with the wings clipped. It would float FOREVER on a warm day. I found it annoying. Love it when I transitioned to a Skyhawk, and it would actually land when I told it to.
@nicholasmccain5818
6 жыл бұрын
That was fun! I know virtually nothing about gliding but i feel like I learned something here!
@ik04
6 жыл бұрын
I have actually done a go-around in a high performance sailplane by making a low approach in ground effect, stowing the speed brake and dumping 80kg of water ballast!
@TheBottlenose33
6 жыл бұрын
Ground effect is caused by mice farting upwards as the glider passes over.
@DonBooch
6 жыл бұрын
Bruno, you make me envious every video
@Brickmaster251
5 жыл бұрын
Love flying at Nephi
@gr82bcrazy1
3 жыл бұрын
Mt Nebo is so awesome to fly around.
@davidepaltrinieri3535
5 жыл бұрын
This is why some birds species fly very close to the sea, they cover the same distance using less energy
@GrumsPlace
3 жыл бұрын
Loved doing this in the IS28-b2 and hornet206 very long high speed run up the field to the hangar, 30 foot incline over 1 mile, was always the highlight of a long days flying.
@Rapscallion2009
5 жыл бұрын
This can be pretty annoying when trying to spot-land an RC model. It's like the model is fighting you. Sometimes the plane can skim so far it's airspeed decays to its stall speed, and you just Bobble for a moment, then mush through the cushion with a thud!
@droneracer
3 жыл бұрын
Drag won't be reduced. The air under the wing can't be pushed down because the ground is there, resulting in more lift.
@Farweasel
4 жыл бұрын
Its really a bit wierd when you think about it. Ground effect for an Aeroplane cuts drag and gives a cushion of lift which allows you to float seemingly forever like a puck on an air hockey table. But for a boat ..... You get into shallow water and 'bottom drag' sucks power and slows your speed significantly. Maybe a hydrologist will be along shortly to explain why it doesn't work like ground effect when flying. Got me baffled for sure .
@enri4134
3 жыл бұрын
@3:15 Sounds like the wings grinding into the pavement as you turned right to prevent overshooting the runway. “Fun!”
@joynermark
6 жыл бұрын
Very cool. You're very lucky to be able to fly in such a beautiful place.
@ljfinger
7 жыл бұрын
According to Google Earth, the 35 approach end is about 30 feet higher than the 17 approach end. So you were descending as well.
@BrunoVassel
7 жыл бұрын
Shhh - don't tell anyone! ;)
@Alex-us2vw
6 жыл бұрын
How would google gain access to measure both ends? Probably better checking with the tower for field elevation.
@berlymahn
6 жыл бұрын
The drag on the wings does not change. The pressure under the wings does, I believe.
@gettingpast4391
6 жыл бұрын
This reminds me of the "Sunship Games" where pilots were flying 6ft off the deck "hopping" over trees and fences trying to get maximum distance, or trying to scratch it into the airport. I knew ground effect had a significant effect but an extra mile well that's impressive. Yeah watch that fence lol.
@TheMultisportGeek
6 жыл бұрын
Nephi Airforce showing its chops. Nice job.
@gliderfs621
6 жыл бұрын
Did you land in Minden ?
@johnandrewnaylor5121
3 жыл бұрын
Thank goodness for the person who invented air brakes (spoilers) or we would need 20,000 feet runways and 10 mile 100 ft final😱
@chicketychina8447
4 ай бұрын
That's an example of a high speed approach my friend .. Even a helicopter floats it it's got enough speed.... An real example would be 2 approaches at the same speed ... 1 bleeding airspeed off at 3ft the other at 50ft and compare the touchdown point on the runway..
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