The TESLA of Aviation? New LAK17c FES glider review
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- Опубликовано: 9 сен 2021
- Is it the future of gliding? With a small electric motor in the front this 18 m glider will be able to self-launch and bring you back home, if you don´t find any thermals. The LAK17c FES is a very interesting concept!
More details about the glider: www.lak.lt/
A huge thanks to LAK-Aviation, Axel Reich for the glider! lak-aviation.de/
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#gliding #soaring #segelfliegen 
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Hi Stefan, If you were flying thermals with full aft flaps, that is pretty draggy on a LAK 17. The sweet spot with my 17a was thermal postition 2 and CG about 80+%. In 15 meter mode I could fly all day with a 27 in strong conditions and any slight differences in climb and glide would be insignificant. CG at anything less than 70% would degrade the climb enough to be difficult to climb with other well flown ships. It took me a while to get the best out of my LAK, after several years in a Mini Nimbus - big difference!
Thanks Mike for the very helpful comment. I will try this next time when I have the possibility to fly a LAK17 again.
Note that 17C airfoil is different compared to 17A, so with 17C is better to thermal with more deflected flaps.
Hi Stefan , I follow you on Instagram and I request for some help to you but you didn't reply thanks
he would be a very busy young man,@@Al_Rahman00. We have to sort these things out for ourselves or join a club or pay a flying school to do so.
Thanks for the interesting review, Stefan. Was pleased to see how well you did in the E3Glide beating 3 of the 4 Ventus 3F's. A great achievement in an unfamiliar glider.
While I fly jets for work I might start gliders again. You make it look so fun and I haven't glided in a while so you inspired me. Thank you
I do love your e-glider content. Looks like it's a growing area.
Seems a lovely glider. Those wingtip could do with a little more width which might make them more effective. I hope you did well in the competition with it. I enjoyed the views from that canopy. Thanks for the fliers eye view of a competition sailplane. Happy flying, Dave W 😊
Thank you!
LAK 17 is the most underrated glider, tbh
Hello, This glider is a marvel of technology, Thank you for the commented presentation, the very short trip and the sharing ...👍 👌
Well done with the video editing, you're getting better and better :) Cheers!
Hi Stefan,
Another change made to the 17C from the 17B to facilitate self-launching (besides the longer undercarriage for prop clearance) was to alter the angle of incidence of the wing on the fuselage slightly to help with launch phase handling.
When the first 17C was flown in comparison flights with a 17B it was discovered that the 17C was better in climb despite having the same wing... Why? Because the new wing/fuselage angle was more efficient at high angles of attack.
This caused much mirth at LAK
не может быть эффективность выше на больших углах атаки . Суперламинарные профиля выдают свое качество на малых углах атаки , в этом и заключается преимущество .
When my anxiety is flaring up and I am feeling stressed, your videos help calm me =]
I have mild anxiety also. :) I discovered this channel, and it seems like a good relief also.
I proud that it was produced in Lithuania! Good glider, isn't? Surprisingly, this my lovelly country has a long-therm aviation history.
Awesome timing with the js3 res maiden flight!
Didn't know this 😅
I really like this video. It eases my mind watching this. Music was good too.
The LAK is great value for money for most pilots. Being able to choose from 15, 18 and 20m wingtips is fantastically versatile. Hope they get self launch certification soon which will make this glider a very tempting choice
Being Lithuanian and living literally 5 km away from where these beauties are produced is amazing! Spent some summers gliding at the air filed next to the production plant. These are beautiful gliders filling our sky every summer.
Pretty nice video Stefan!
Keep doing!!
Thanks
Vielen Dank, Stefan - sehr interessant!
Gerne!
i know nothing of this arena, but watched it fully to the landing. Wow!
Man, what a gorgeous video
Great Job Stefan, I can't wait to see the JS3 RES review next year :D
Get me to the JS3 RES and I will make a review ;)
Love your video's. I need to get a ride in one of these some day.
Love your experienced reviews. What is your all time favorite glider to fly?
Nice glider. During flying nice playing flute skills. Respekt
Hi Stefan, you are right, that´s may be the future of soaring. Although it is still very expensive.
Thank you. I enjoyed the commentary.
When are we going to see photocells on the wings?
So cool!!
Outstanding
Parabéns pelo voo top , muito bonito.
Hey, I am new to this.... Fantastic Video... Man that looks like fun!!!
Thanks ...
Gerade erst hab ich mir den Vergleich zu anderen 18m-Fliegern gewünscht - schon kommt er 😉
Dankeschön!
Weißt Du, wann die Zulassung für den Eigenstart kommen könnte?
Alex
Nice landing 👍👏
Beautiful video.
PERFECT VIDEO THANKS
Cool glider, I’d love a go!
Using the flaps in the air, how do you decide what position is the best ? Could this manouver be automated somehow?
No matter how fancy the meter panel is, tape and the wire remains on the canopy ! :D
Great job
Thank you for the beautiful video.
Would a 2m tall person, 95 kg, feel comfortable? I am too tall for Schleicher up through the 31.
I think high aspect ratio (giving better finesse) improves the winglet performance. However, I am a contrarian on the role of winglets, as I hypothesize that winglets do not significantly improve the wing's finesse (by behaving like some kind of lateral air 'damn'), but instead winglets generate a minor bit of thrust by turing the, wind root directed, spanwise airflow rearward, and in redirecting the airflow, generate a small thrust.
Thank You for a great review!
This seems like a very nice glider, perhaps one of the best values for money in this class. I knew very little about it before watching this. I would like to know how the cockpit works for tall folks like me, I am 1,93 AGL?
Comparative glide ratios of the different models? Battery technologies? Great upload and editing.
This is awesome ☺️
I follow you and I really like your channel so fierce it makes me relax and happy keep doing it I like it
Thank you! 🤙🏼
Hi Stefan. At 11:23 when the start gate opens, I noticed that you may have pulled the dive break. Was this intentional? Great video, thank you.
Where is that beautiful location? I want to move there, and they also have a large glider community!
Best value for money - BY FAR!
Looks great! where exactly is that?
Wow best, nice view
Hi! can i ask what's the endurance of that glider? How long does it last before charging again the battery?
When you often fly with ballast in gliders it seems like an obvious opportunity to use that for batteries and self launch it. As great as gliders are they really need an engine :)
I used to own a Lak 12. It was such a lovely aeroplane and it could stay up for ever, and had a min. sink rate of about 95fpm, and L/d of 50:1. It was rubbished by nearly all (most of all by people who had never seen one, let alone flown one). I was just so impressed with it, and never experienced a moment's perspiration in flying it over about 100 hours. I did hit some very nasty ground effect with exceptionally strong sink once on short final, and a measured lowering of the nose kept the airspeed just right. It was a gorgeous aeroplane to own. I used to hangar it, and it was taken apart once a year for its annual inspection. The maintenance engineer, german born and very highly educated in aero engineering and practically experienced was reluctant to take it on because it came from one of those communist countries, and he was schooled in beautifully built german sailplanes, but after the first annual, he reported that the metal work in them was excellent, but he didn't think all that much of the glass work - fine, strong etc. but not so pretty here and there. But it was a very handsome aircraft to the eye, too, with the low mounted stabiliser. Anyway, family and work got in the way, so I sold it most regretfully. If I was looking for an up to date aircraft now, the type I would first look at is a Lak 17b or c. The main problem with the 12, other than blind prejudice, was the weight of the wings - about 210 lbs from memory but three people could take it out of the trailer on quite uneven rubble ground, attach the one man rigging wheel, turn it through 90deg, and slot the wing roots in ... but after that, to close them to the correct fit was a pain, and you certainly needed one man to be strong at that point and it took a bit of wiggling around up and down at the wingtip, which I did and I am as strong as a 10 year old girl. But we only did this a few times, and we could have improved with practice. Hoteliers snapped in perfectly and simply. This talk of needing a rugby team is complete bulldust. Ground handling and towing to the flight line was no problem. It is very nice to be up there in smooth evening air when all the other gliders pilots are pushing their aircraft into the hangar. Lak were certainly making a nice product in the 1990s.
wow!cool!
this looks like a bigger version of the hobie hawk plane now i want one ☝️
Would be interested to hear how the handicap system works in more detail when you have a spare moment..
Perhaps I will make a video about the whole eGlide competition concept soon.
The winglets add drag without accomplishing increased glide ratio or electric range in a glider.
Great!
Did you also get any whistling noises from the folded prop as with the LS8? And is that still the case with LS8 FES or was that a weird one-off?
No, there was no annoying noise! But I think DG also fixed their noise problem in the LS8 e neo.
@@SteFly : Das hoffe ich auch. War schon abartig, das Pfeifen. Danke für deine Bemerkung - und natürlich für die Videos.
Informativ und interessant sind sie immer. Danke dir!
Any recommended flight clubs?
I suspect it would be worth installing solar panels on the wings, it should increase range by about 30%
Awesome video :) I hope someone here can answer my question. What glider pilot license do you need to fly internationally in all these races? Is the ICAO sailplane pilot license the one to get? I’m in Australia and I’m not sure if they offer that here so any advice would be great :) thanks
From the CASA website:
Part 61 includes a glider pilot licence (GPL), which is ICAO compliant….
As an ICAO compliant licence, the GPL is expected to be recognised by foreign aviation authorities and this will assist Australian pilots wishing to participate in gliding competitions overseas.
@@Johan-ex5yj thank you kind sir
Белые, прекрасные длиннокрылые птички,на радость пилотам-любителям !
Hi Stefan, as far as I know you are the only racing glider pilot who tested 3 FES gliders. LS8 - HpH Shark- LAK17. Which of them would you buy ?
LAK17, if it gets certified for selflaunch.
@@SteFly Hi Stefan, thanks, I'm looking forward to what you'll say on new selflauncher JS2 after testing :-)
Is this more heavy than a typical 18m span glider of a similar price point?
Isn't that @CitationMax's music? ( at about 1:30)
Could you have braked harder at the landing? I hope so since it looked pretty close to the end of the runway
I was thinking the same thing. Don't know too much about landing a glider but that seemed dicey!
you should make JS3 res review
Get me to the glider and I will do it ;)
Una Muy Linda Vista Genial...
OMG where is that beautiful location?
I suppose it's a weight issue to carry solar cells? Or the power gain from them is insufficient?
What does the beeping in the cockpit indicate?
Thank you for the review, Stefan. 👍
It does look like a very nice glider, I wish I had about 110k Euros in my back pocket to buy one. 😀
That is only the price for the basic plane ( according to blanik america ) you need to add instruments, gap seals and some other extras (10k), trailer (13k) and VAT, so the total runs to 161K. Still much less tha a shark. With probably better performance at high speed
@@nicopeursum8208 Thanks for the info, Nico.
There is always extras, isn’t there? 😕
@@Johan-ex5yj yup 😀
@@nicopeursum8208 Who manufactures 2 seater self launch electric glider besides Pipistrel and at what pricepoints?
@@nicopeursum8208 ...if you are gonna play in aviation, you better have a money tree growing in your back yard. You'll need it. (EX Citabria owner)
Beautiful place looks like Pokhara Nepal
Hello.pilot license is necessary to use it???
What happens to the cable on the tow plane? Does it get automatically winched back inside the tow plane?
I wonder about that to....
Do they have an option to Eject the Battery Pack ?
perfect
If I was a million air, I would live in a modest house, drive a modest car but own the most magnificent sailplane/Glider! Not unlike this lovely! I fly at my local club, I have never seen one glider with suede trim. Seen some sustainer motors and cool electronics, but not like this :O
Just curious, what is the cost of these model glider’s?
At what point should the water be discharged?
Where’s the airport?
Lake varesse in Italy ??
I fell from my chair dizzy watching this. You kept flying round and round.
mt bom Deus te abençoe amigo! tmj!
Stefan, what was the intro song?
Sounds pretty cool.
Never Looking Back by VESHZA
7:13 - Please tell us what is happening with the cable? Does it fall down? is it then picked up?
There are two methots: 1. the tow plane can retrackt the cable with an whinch 2.the towplane makes an lowpaas over the airfleid and drops the cabal
Where is that beautiful place and airport ??!! 😍
Hi Stefan. You mentioned a thermalling speed of 115kph. That is the speed with maximum water ballast? How much would it be without water ballast?
Should be between 80 and 90 .
@@jme104 yes, that would be normal. If you recalculate 115kph for the lower weight ( 600kg Max weight - 160 liters water) you arrive at 100 kph though -> sgrt( 115^2 * 440/600)
Did I understand your comment correctly, the Lak 17 is better than a Asg 29 in feedback from the thermal but not as good as the unballasted LS3?
Correctly 👍
@@SteFly Thank you, I have never flown an LS3 but have flown LS 1f, LS 6b and LS8a and all 3 have lovely feedback on and in thermals so I am not surprised that the Lak loses out to them.
Hi. Great video. Question: Are there any systems in place that detect if the pilot is in any way incapacitated (stroke, epilepsy..) and is not responding. I would think there is an autopilot that would at least try to improve the situation.
There are virtually no systems in any aircraft at all that do this.
if this is a concern, one would be wise to use a larger aircraft, and fly with a copilot.
Simon I think that would be very difficult (although perhaps not impossible?) to arrange in a glider. If this concerns you and you are interested in gliding stick to two seater craft. Such systems are still in their infancy, Cirrus being the only one I can think of offering such safety features
@@fatfreddyscoat7564 the airforce has . There is a video of an f16 doing auto pull up on its own after starting to freefall after pilot suffered from Gs and lost conscious .
I want to try 😍😍😍
A couple of stainless steel hard wires on the wingtips would have less drag than those rollerblade wheels.
Competitive gliders have water ballasts & negative flaps to help speed up flight while inbetween thermals.
Would a new design with variable-sweep wings benefit to further increase speed during certain high-speed runs?
Then mechanically switch back to straight wings & positive flaps while thermaling.
No, the most efficient wings under subsonic speeds are straight (like a glider)
Bom dia. Achei muito interessantes seus vídeos, será que poderia deixar habilitada a tradução para o idioma Português do Brasil?
How much does it cost?
We all came here for the FES, but what we got was a 16 minute video with 3 seconds of FES action. Thanks bro.
Is it able to start on its own?
cool gadget
Wo liegen denn die preislichen Unterschiede bei den Modellen?
Die genauen Preise sind leider nicht veröffentlich und müssen bei den Herstellern angefragt werden.
Where is this place? It looks nice.
Varese, Italy 🤙🏼
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hey Stefan, I have a question. I have 0 knowledge on gliders but what is that constant beeping thing?
That is the “Vario”. Look it up!
It basically tells you if you're sinking or climbing
0:42 Только хотел спросить: "А где моторчик?"
Here is a theory of centrifugal momentum:
The propellor of a winged flight device ought apply 'centrifical' force
in its design. Were props encircled with a bike-like wheel to add weight,
what then? Prop weights with properties of flight beyond electric?
Centrifical force applied to EV propulsion. A theory.
you want to add unnecessary weight and more air drag? could you explain it a bit better cause i think im missing something