FLIGHT TEST AS34 Me - ELECTRIC SELF-LAUNCH GLIDER

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  • Опубліковано 23 гру 2024

КОМЕНТАРІ • 735

  • @rongendron8705
    @rongendron8705 2 роки тому +305

    I'm 76 & took 6 hrs. flight instruction at age 17 in a Piper Cub & Aeronca & later, went on one 'glider flight'!
    When the glider pilot pulled the cord, releasing us from the tow plane, I couldn't believe how quiet it
    was compared to the powered planes! This electric model seems like the "best of both worlds"!

    • @onepalproductions
      @onepalproductions 2 роки тому +5

      Me too, 30-years ago I flew for the first time in a glider, and I thought the same thing when the tow plane left us - peaceful.

    • @noclu4u384
      @noclu4u384 2 роки тому +2

      My mom had an Aeronca Champ and my dad had a super cub. I had a dragonfly .

    • @JanPBtest
      @JanPBtest Рік тому +2

      I fly a paraglider so I totally sympathise with the quietness! 🙂But I have never tried a glider plane, all this towing (and other) infrastructure was a bit of a turnoff for me. This self-launch idea is great.

    • @bryankincaid1912
      @bryankincaid1912 Рік тому +3

      hi ron , just turning 70 in august and looking at getting back into a powered sailplane here in nz . wish you the best , cheers

    • @janebates9068
      @janebates9068 Рік тому

      ​@@JanPBtestno see by

  • @colinbarnes705
    @colinbarnes705 2 роки тому +160

    It's so cool how the propeller gently stops in the correct position for folding, the clunk of those doors closing is pretty satisfying too

    • @phmwu7368
      @phmwu7368 Рік тому

      Indeed but what a noise! Solum Volamus

    • @joshb6993
      @joshb6993 Рік тому

      Am trying to figure out how they managed to get the blade to stop in the vertical alignment

    • @combinacijus
      @combinacijus Рік тому +3

      ​@Josh B one of the ways could be by controlling motor position instead of speed (just like servo motor) which is not that hard if you measure rotor position
      Or to simplify imagine if you energized 2 motor coils on top and bottom it would attract magnets to it and keep propeller at known orientation

    • @404NameN0tFound
      @404NameN0tFound Рік тому +1

      @@joshb6993 Motors can have a position sensor that gives the current angle the motor is at. The motor controller can say that if the angle of the sensor is not equal to straight up or straight down, keep turning slowly until the angle is straight up or straight down.

    • @prabhakarkmv4135
      @prabhakarkmv4135 9 місяців тому

      How high it can fly?

  • @timwilde4200
    @timwilde4200 2 роки тому +145

    Wish I had the money. I learned to fly gliders many years ago in Waikerie, Australia, and much as I appreciated being towed up, the costs and tedium of waiting were something I often wished I could be independent of. The -petrol-driven versions of these offered that independence, but is also seemed a little too close to having a powered plane. These electric versions offer up the perfect solution.

    • @0my
      @0my 2 роки тому +9

      How much does this toy cost?

    • @lakingboss1045
      @lakingboss1045 Рік тому

      What u mean toy

    • @0my
      @0my Рік тому +14

      @@lakingboss1045 how many dollars does it require to obtain one of those crafts

    • @lakingboss1045
      @lakingboss1045 Рік тому +2

      @@0my idk

    • @0my
      @0my Рік тому

      @@lakingboss1045 maybe ask your boss. Lol. Jk. Peace bro.

  • @rustie4242
    @rustie4242 2 роки тому +43

    That is a fantastic use of technology especially from a safety perspective, being able to climb again if you are not in a position to make a safe landing, and of course to extend flight time.

    • @enterprise7585
      @enterprise7585 2 роки тому +1

      What if the engine stalls on takeoff? Do you think it's safe?

    • @MrVTeta
      @MrVTeta 2 роки тому +27

      @@enterprise7585 Electric motors are even more reliable than gas/jet fuel powered ones. Just do proper maintenance of course.
      And a glider will require less altitude to be able to return to the runaway than a regular airplane due to a much better glide ratio.

    • @pilotavery
      @pilotavery 2 роки тому +15

      @@enterprise7585 less likely to happen than the tow planes single piston engine stalling on takeoff.

    • @BigRigWA
      @BigRigWA Рік тому +3

      ​@enterprise7585 just as safe as a rope break if being towed and far safer than the cable snapping on a winch

    • @1337Jogi
      @1337Jogi 9 місяців тому +4

      @@enterprise7585Electric motors do not really break.
      Never heard of such a thing.
      It is much more likely to have a failure in the wiring, voltage regulation and especially battery pack.
      As for the battery pack you could split it to have redundancy - if one breaks you are left with half the capacity.
      The rest is of the components do not weigh alot and you can easily oversize them by a large factor so even at max power they are way under their tolerance and thus do not wear out.

  • @4by4squared88
    @4by4squared88 2 роки тому +40

    That’s a dream come true. Always wanted a glider with some type of motor to take off and land if you need it. Always thought the ones with the jet engines would be great but I love this one.

    • @SteFly
      @SteFly  2 роки тому +13

      Jet engines are bad at low speeds, so it's not the best for a self launch.

    • @estebita_lato
      @estebita_lato 2 роки тому +6

      I believe this is better than the ones using a turbine, because you need at least 4 to have enough power to take off, and as any turbine, specially those very small ones, they don't operate very well below 70% spin speed, mostly because of the size. On the negative side, this glider is probably kinda heavy, because of the batteries .

    • @MrEnyecz
      @MrEnyecz Рік тому

      Actually, there is jet engines too (although not for self launching): ua-cam.com/video/pIhKIWRMdwk/v-deo.html

    • @PilgrammedGuide
      @PilgrammedGuide 9 місяців тому +1

      @@SteFlywhat’s the price for a AS34 ME I can’t find the price anywhere

  • @jondavidmcnabb
    @jondavidmcnabb 2 роки тому +22

    In 1991 thru 1993 I was stationed in Germany and the Germans truly understand Gliders and Flight training. I should have joined then local glider club and gotten my cert. This is great stuff.

    • @briangriffin5701
      @briangriffin5701 2 роки тому +3

      They're crazy about RC Aircraft too. 😳

    • @redblack8414
      @redblack8414 6 місяців тому +4

      They invented the sport of gliding and they are #1 in research and development of sailplanes.

  • @brianperry
    @brianperry 2 роки тому +12

    I have an RC controlled model ASW Glider. exactly like your full sized one .Air Brakes, retractable landing gear..and the retracting propeller.....covered with doors when not in use....Ive owned it for quite some time now, had a couple of ...less than perfect landings but it still flys...Interesting watching the real thing... thanks for the trip..

  • @alishanmao
    @alishanmao 2 роки тому +3

    what a beautiful aircraft. you are so lucky to have this job. we can only dream of it.

  • @williamscoggin1509
    @williamscoggin1509 2 роки тому +18

    Airplanes with parachutes, and now gliders with engines. That's the way to do it! 👍🏻🇺🇲

  • @robertlock6041
    @robertlock6041 2 роки тому +60

    What an amazing machine! Good harmonisation, good performance, particularly the 18m, and this wing span should go some way towards compensating for the battery weight compared with the 15m version. The only problem with this glider is that there isn't one with my name in the log book 🙄... Thank you Stefan for sharing this with us. I can see that you had a really good time. Cheers aus England 😀

    • @SteFly
      @SteFly  2 роки тому +2

      Thanks Robert 🙂

    • @chrisneu3487
      @chrisneu3487 2 роки тому

      @@SteFly ICH finde es unten immer schöner als open

    • @arturoeugster7228
      @arturoeugster7228 2 роки тому

      Robert, The maximum Lift to drag ratio does not change, it occurs at slight increase in speed, the sinking speed increases in the same proportion.
      In competition sailplanes a lot of water ballast is carried to substantially increase the cruising speed between thermals. This ballast is drained before landing or in weak lift (meaning thermal or upslope wind vertical component) at the end of the day.

    • @arturoeugster7228
      @arturoeugster7228 2 роки тому

      @@chrisneu3487 Besonders wenn etwas schief geht und man wünscht dass man den Absturz am Boden beobachtet

    • @robertlock6041
      @robertlock6041 2 роки тому +1

      @@arturoeugster7228 I know all that, but all other things being equal, the machine with the longer span has a better performance than one with a shorter span. That's why Open Class gliders generally have a better L/D ratio than 15 Metre Class gliders. I prefer the flying characteristics of shorter span machines, but that wasn't the talking point.

  • @bfarm44
    @bfarm44 2 роки тому +4

    Seems like the addition of some small retractable wing tip gear would be a good idea too and eliminate the need for someone to balance out the wing

  • @haraldschevik5213
    @haraldschevik5213 2 роки тому +37

    Stefan, thank you for sharing these wonderful videos, very useful for us trying to keep up with the newer models! AS made an incredibly fast progress in the AS33, 34 and now the 35 it looks like. Fliegen Sie sicher und glückliche Landungen! :-)

    • @SteFly
      @SteFly  2 роки тому +6

      Thank you! Really looking forward to fly the AS33 Me and the AS35, hopefully soon 🙂

    • @NoobieToob
      @NoobieToob 2 роки тому

      @@SteFly ayo, isn't self launch glider just a plane, dawg? I'm confused cause a glider ain't supposed to have no propulsion dawg

    • @PilgrammedGuide
      @PilgrammedGuide 9 місяців тому

      @@SteFlywhat’s the price for the AS34 Me

  • @patrickfox-roberts7528
    @patrickfox-roberts7528 9 місяців тому +3

    I love that despite all the decades of new tech there is STILL a thread on the canopy :)

    • @redblack8414
      @redblack8414 7 місяців тому +2

      @patrickfox-roberts7528 Invented by the Wright brothers. Still the best way to see the direction of the relative wind. Also, It cannot break down like mechanical or digital instruments and it reacts faster (no lag) than the turn and bank indicator to indicate if the aircraft is skidding or slipping. Last but not least, the pilot can watch the string while looking outside for traffic. No need to look at the panel.

  • @mr.zeitmaschine6878
    @mr.zeitmaschine6878 6 місяців тому +2

    I love it. Just minimal and enough for lots of fun

  • @TheRedRaven_
    @TheRedRaven_ Рік тому +10

    Omg, 80% battery remaining? I was thinking the battery would be around 15-20% at that point. That's incredible.

    • @nighthawk0077
      @nighthawk0077 Рік тому +2

      Motor was running for only a few mins before shutdown. Like 20-25 mins runtime is possible depending on power setting

  • @knowledgebyte
    @knowledgebyte 2 роки тому +5

    Thanks for sharing. Really interesting noise it makes whilst holding the prop in position. The two side struts transmit and amplify the noise. Very impressive power delivery and low consumption.

    • @BoltRM
      @BoltRM 2 роки тому

      I thought it was loyd for an electric motor, but suppose that could be the reason. Seems like it shouldn't vibrate so much?

    • @knowledgebyte
      @knowledgebyte 2 роки тому +1

      @@BoltRM they could program the motor to just pulse, but have chosen to vibrate it constantly so people know it is alive.

    • @BoltRM
      @BoltRM 2 роки тому +1

      @@knowledgebyte I'm guessing pulsing might increase odds of vibration & failure? I have no idea, total speculation.

    • @knowledgebyte
      @knowledgebyte 2 роки тому +1

      @@BoltRM actually I think it has to lock the prop with a constant signal, so that it doesn’t rotate during lowering and rising. And that’s why it is humming constantly

  • @AsymptoteInverse
    @AsymptoteInverse 6 місяців тому

    It's absolutely amazing what brushless motors can do these days! And, of course, your glider flights are amazing, too.

  • @theblytonian3906
    @theblytonian3906 2 роки тому +10

    Were I a rich man and a few years younger. This is my type of (crew support independent) soaring. Had it only been available 50 years ago!

    • @robertschnobert9090
      @robertschnobert9090 9 місяців тому

      You still need a crew. Gliders can't be used by "lone wolfs" or antisocial rich men. Gliders are perfect to purchase in a gliding club. 🐦🌈

    • @Freddy456
      @Freddy456 8 місяців тому

      ​@@robertschnobert9090Actually you don't need screw. Already more than 30 years we have existing tools for mounting the wings alone and with a self launching glider and a wheel ot the wingtip it's fine.

  • @paulw176
    @paulw176 2 роки тому +7

    Wow! I miss flying so much that looks like a blast!

  • @ozarklanding
    @ozarklanding Рік тому +2

    Now this seems to be the perfect application of electric power in aviation!

  • @mirkoreinl3132
    @mirkoreinl3132 2 роки тому +4

    Eines der schönsten Maschinen As34me war schön zu sehen wie sie vom Rumpfbau bis zur Auslieferung immer kompletter wurde wie ein Zeitlupenbau. Einfach super

  • @bailout00
    @bailout00 8 місяців тому +48

    Throw some solar panels on it and it could go for a really, really long time

    • @Mxaviair
      @Mxaviair 5 місяців тому

      Google "Solar Impulse". 👍🏻

    • @janmuhlberger9631
      @janmuhlberger9631 4 місяці тому +10

      yeah I also thought about this. But I did some calculations. the thing is, when you cover all the Wing area with Flexibel Solar Panels (because they can adjust to the airfoil and are lightweight) you would only charge on peak like 4.5 minutes of the max Continous power (25kw), if the charging process would be 100% efficent. so more like 3min per hour. more than nothing, but not great. Also it would reduces the Efficiency of the wing.

    • @BrotheuZ
      @BrotheuZ 3 місяці тому

      ​@@janmuhlberger9631 Take off power is demanding..How much altitude could one gain in that time period 🤔

    • @randbarrett8706
      @randbarrett8706 3 місяці тому +4

      It would be way easier to just put an internal combustion engine and fuel tank

    • @heibk-2019
      @heibk-2019 Місяць тому +1

      @@randbarrett8706 But that would be boring

  • @PureGlide
    @PureGlide 2 роки тому +2

    Looks like they need some fluff in the air vent! I have the creaking in my glider too, I put just a tiny bit of vaseline on the canopy frame and it stopped it.

    • @nicothien488
      @nicothien488 2 роки тому

      Yeah the fluff is good, and/or the 'stack of drinking straws' kind of material. I'll try your canopy frame solution!

  • @Dr.Fares.A.M
    @Dr.Fares.A.M 2 місяці тому +1

    Hi stefan
    I have a question
    Can you travel from country to country by this glider ?
    Thanks for sharing and you're outstanding pilot.

  • @gkdresden
    @gkdresden Рік тому +3

    I think, this self-launch possibility makes this glider really interesting. I think some propeller optimization is still necessary to use the power of the motor more efficiently.

  • @markreed9853
    @markreed9853 2 роки тому +9

    Ive done a few duel seat flights in small gliders as a cadet BUT the one aircraft towed glider flight I did in the 90's was amazing! - I recommend everyone try one as its so quiet and such an amazing view ! - hope they make a duel seater version of this which will make is available and easier to operated in more locations.

  • @freesk8
    @freesk8 2 роки тому +1

    Wow! Nice! Things are getting better!

  • @Sqeptick
    @Sqeptick 8 місяців тому +1

    The perfect use for electric power in aircraft. Very cool.

  • @rollyherrera623
    @rollyherrera623 2 роки тому +2

    This just changed everything. Like a shuttle launch; This uses the same propulsion/return principles. Great re-use of a past rocket use to glider technology...Add some solar panels in glide mode to re-charge batteries; infinite flight?

  • @skylarkman2000
    @skylarkman2000 2 роки тому +3

    Wonderful little aeroplane.

  • @Krankenstein105
    @Krankenstein105 2 роки тому +3

    What is the battery maintenance requirements? How often do you have to change the batteries and how many charging cycles can be made?

  • @Mywhtjp
    @Mywhtjp 2 роки тому +3

    Wow... Very nice. You need some solar panels on the wings to recharge while your gliding..

  • @nattsurfaren
    @nattsurfaren Рік тому +2

    That engine is really powerful. I can feel the vibrations on the computer.

  • @landinhardy7682
    @landinhardy7682 8 місяців тому +2

    Why not use the propeller as a ram air turbine (RAT) to recharge the batteries once gliding?

    • @PredatoryQQmber
      @PredatoryQQmber 8 місяців тому

      Probably will create too much drag. Unless you would want to do few long spins down and up around an updraft for few percents.

  • @johngalloway156
    @johngalloway156 2 роки тому +2

    Regarding high aileron forces, it sounds similar to the V3. I wonder if that might be because the most recent aerofoils maintain laminar flow extending so far aft towards the flaperons? If the aileron forces are much lighter on the ground then it is likely to be airflow resistance that makes the difference in flight.

    • @SteFly
      @SteFly  2 роки тому +1

      I can't remember the forces on the V3M I flew in Namibia. It was not as memorable as at the AS33, that's for sure. Perhaps it's caused by the thinner wings and shorter leverage. The only funny thing is that a South African glider manufacturer is able produce a gliders with light controls.

  • @timothyvaher2421
    @timothyvaher2421 2 роки тому +9

    Impressive victory over gravity & the hire of airplanes ✈️ to get cruising altitude! And the ability to get the craft into proper landing 🛬 approachs! Cool 😎!

  • @forrestallison1879
    @forrestallison1879 2 роки тому +3

    the part where the blade lines itself up is wild
    that is some NICE engineering

    • @SteFly
      @SteFly  2 роки тому +1

      Yes, very cool system 👍

  • @tadeksmutek5840
    @tadeksmutek5840 2 роки тому +3

    Thank you, Stefan - very interesting video about this modern glider model. Looks very nice.

  • @steveanacorteswa3979
    @steveanacorteswa3979 9 місяців тому

    Pretty amazing, I am glider rated but having' flown since my California days almost 20 years ago, lots of time in the Grob 102 & 103, really miss those days, don't have the same lift here in Washington, would have liked to hear what the cruise time would be if you were to ferry it back from somewhere.

  • @i.r.wayright1457
    @i.r.wayright1457 2 роки тому +4

    Let's say you found some great lift and wanted to recharge the battery in flight. Would it be possible to pull the motor up to use some energy by wind milling the prop at the cost of some altitude? If not, they should work on that concept. Imagine how far you could possibly go if it were set up that way. In June of 1972 I was working at Piper Airfield in Lock Haven, Pennsylvania, two weeks before the great flood. There was a Nelson Hummingbird, a piston engine powered, self launching sailplane, that needed a bit of sheet metal repair caused by the prop striking the skin on the top of the fuselage. Just a minor strike, nothing serious. I have been up in two sail planes, a brand new Schleicher and a Blanik. Great fun.

    • @rm4po4
      @rm4po4 2 роки тому +1

      Or maybe a small door that leads to a small generator prop? I believe large jets often have a small prop that can be deployed for emergency electricity.

    • @i.r.wayright1457
      @i.r.wayright1457 2 роки тому +2

      @@rm4po4 Yes, it is called a "RAT" for Ram Air Turbine. I even installed a small one that popped out of the front baggage door on a Piper Cherokee Six. It was a fan blade connected to a small alternator.

    • @mrdojob
      @mrdojob 10 місяців тому

      I don't think it'll work. The energy used to inefficiently charge via the propeller will be better used to let the sailplane do what it does best, sailing.

  • @garrykennedy5484
    @garrykennedy5484 2 роки тому +1

    You can get rid of those creaking noises from the canopy by rubbing Irish Spring bar soap on the edges and it shouldn't hurt the longevity of the foam I don't think. Maybe an experiment should be done, but I used it on 4x4 trucks that had the same issue and it worked well. Very annoying and maybe worth a slight degradation in the foam rubber????? It also has a FINE FRESH SCENT! LOL

  • @joewoodchuck3824
    @joewoodchuck3824 2 роки тому +3

    I love gliders. I wonder how much run time it has and what the motor power rating is.

    • @newforestroadwarrior
      @newforestroadwarrior 2 роки тому +3

      35kW maximum power
      25kW maximum continuous power
      8.6kWh battery capacity

  • @albertseabra9226
    @albertseabra9226 Рік тому +1

    Sold!
    I've seen autonomous Gliders equiped with a front propeller.
    Is it retractable?
    If not, a substancial drag may take place -- or is it negligeble ?

    • @jimpike7445
      @jimpike7445 Рік тому +2

      You're describing the FES system where the propeller folds flush against the fuselage when not in use thus causing negligible drag. The advantage is instant folding or unfolding with no complicated mechanisms required to extend the motor/propeller or extra drag while extended. The disadvantage is the prop must be smaller and thus less efficient with reduced thrust, although the reduced drag when operating makes up for most of this. I've owned an FES self launching Silent2 Electro for 6 years and over 550hr flight time with no maintenance required on the motor system. The glider also has removable batteries which I can take home to charge. I also have a relatively fast portable charger that fits in the glider behind the seat for when I land away from home base. The Lak 17C 18m glider is capable of self launch using the FES system.ua-cam.com/video/rxe6DIfPKb4/v-deo.html

  • @williamscoggin1509
    @williamscoggin1509 2 роки тому +1

    I don't really know anything about gliders per se and this may be a dumb question. But have you tried rubbing some armor All on the rubber seal that the plexiglass cockpit seals against to see if that would help with the racket? 🤔

  • @dennisliebig7622
    @dennisliebig7622 2 роки тому +2

    Wow, erstaunliche Leistung. Prima Entwicklung.

  • @theeventhorizon-valebridge9512

    A superb machine. Thanks for sharing Stefan.

  • @PavloLukashuk
    @PavloLukashuk Рік тому +1

    02:02...Stefan , what the vertical speed max for climbing this flight level ?

    • @SteFly
      @SteFly  Рік тому +2

      More than 3 m/s at full thrust.

    • @PavloLukashuk
      @PavloLukashuk Рік тому +1

      @@SteFly Thanks! ❤️ And with piston engines - the same vertical speed ? which motor is better, in your point view?

  • @grantsmythe8625
    @grantsmythe8625 2 роки тому

    Enjoy yourself and Life itself, young man. Live, Live, Live Life!

  • @Dzordzikk
    @Dzordzikk 2 роки тому +3

    Hi Stefan, thx for nice video. Electric self launch is future of gliding. But that future in now ...

  • @raimundoofilho
    @raimundoofilho 10 місяців тому

    Beautiful, how much weight is added to the set, the aircraft would have larger dimensions to balance it, thanks. Good flights

  • @wearemany73
    @wearemany73 2 роки тому +3

    Nice elewaiter! 😉 Great video…First ten seconds of video I thought I was watching an RC glider clip, I was very impressed with the scale cockpit until I realised. 😜

  • @someguy5035
    @someguy5035 2 роки тому +2

    Almost impossible to find a price for one of these.
    How much are they?

  • @binksterb
    @binksterb 2 роки тому +1

    That is awesome wish I had access to one of those when I was learning in Wales.

  • @peterlohnes1
    @peterlohnes1 Рік тому +10

    how much does that cost?

    • @VaibhavBshet
      @VaibhavBshet 7 місяців тому +3

      Alot

    • @ToiletBna
      @ToiletBna 7 місяців тому +1

      Prob 100k

    • @voornaam3191
      @voornaam3191 7 місяців тому +1

      Call the factory. This nonsense like "a lot" does not help you. And you can always wait until the first ones are sold, secondhand from the first owner is not bad, right, and it will save you some. But for real, call that Schleicher company, they can tell you who sells it for them, and details. Why not?

    • @nestorgonzalez2912
      @nestorgonzalez2912 7 місяців тому

      @@My_Fair_Ladydamn I rather buy a sw-51

    • @droneshotsantoine1805
      @droneshotsantoine1805 6 місяців тому

      It costs €140.000

  • @Quack62
    @Quack62 10 місяців тому

    I like this glider alot, the cockpit looks really finished with the nice finished, cloth interior.. most gliders lack that

  • @ThermalWave
    @ThermalWave 2 роки тому +2

    Wir haben gestern auch bei Schleicher Probeflüge gemacht, und das elektrische Antriebssystem hat wirklich überzeugt. Einfache Bedienung und satte Leistung! Und auch ein sehr nettes und kompetentes Team, das uns alles erklärt hat 👍 Kann ich nur empfehlen, das mal auszuprobieren 😃

  • @kidwave1
    @kidwave1 2 роки тому +4

    Cant find a better application for an electric motor! It only needs enough battery time to get you to altitude, so no worries for how long a charge lasts. Brilliant!

  • @cerdagnol
    @cerdagnol 2 роки тому +3

    Hi Stefan, could you tell us more about the negative vertical speed increase when the motor-pod is deployed. It acts as an airbrake, sure, but how much ?

    • @SteFly
      @SteFly  2 роки тому +2

      I didn't tested this at my short flight, but it's a very good point. My feeling was that it is not so bad..

    • @arturoeugster7228
      @arturoeugster7228 2 роки тому +1

      When you fly at the minimum sink condition, motor deployed, closer to stall the sinkrate, instead of about o.6 m/s, will be closer to 0.9 m/sec.
      The power on climb rate looks like 2 m/sec, hard to see flying through the thermal, lowest gage to the left in m/sec scale divisions. 1m/sec is about 1.944 kn
      At the least sink condition, possible if stall speed is low the induced drag is 3 times the parasite, which the stopped prop contributes to, may be by another 40% So min. sink rate is estimated to be below 1 m/s . L/D, however is penalized higher, because at best L/D the parasite Drag equals the induced
      Dragi = (L÷span)² / q×3.1416
      q = dens/2 × TAS² or SLevdens × IAS²
      Dragp = q × Wing area ÷ Cd
      L/D m= span/2 × sqrt( 3.1416/Wa×Cd)
      knowing your L/Dm you can compute Cd, all this assuming elliptical lift distribution.

    • @arturoeugster7228
      @arturoeugster7228 2 роки тому +1

      Least power = weight× min sinkrate is proportional to Cd ^ ¼ very weak effect.
      The problem with high aspect ratio wings is that stall speed is higher than the least sink speed ( IAS), so be carefull. near stall the drag increases faster than the formula indicates.
      The effect of winglets is to increase the effective span by ½ their height
      The great Aerodynamicist Robert T Jones describes this in his publication,
      Aerodynamics of Wings, and other publications, he authored

    • @cerdagnol
      @cerdagnol 2 роки тому +1

      @@arturoeugster7228 Thank you for your explanations !

  • @thelastninja4825
    @thelastninja4825 2 роки тому +3

    that is an amazing progress for gliders

  • @1337Jogi
    @1337Jogi 9 місяців тому +1

    Does it make sense to deploy the engine when landing?
    You would have more drag to better slow down and also have theoption to abort landing if something go wrong.
    Or does the engine introce instability or worse handling on landing?

  • @andreasschmidt2846
    @andreasschmidt2846 2 роки тому

    Hallo Stefan, kann man den Akku über den Propeller schon in der Luft wieder aufladen oder muss das noch erfunden werden? Du verstehst, wenn man über die Thermik bereits an Höhe gewonnen hat, hätte man die Möglichkeit den Propeller als eine Windturbine zum Aufladen zu nutzen. So könnte man innerhalb eines Fluges den wieder aufgeladenen Akku mit Propeller in anderen mehr herausfordernden Situationen nutzen - oder einfach als eine Art Kombi-Transformer-Flieger - etwas zwischen Segelflugzeug und Motorsegler.

  • @AndrewSheldon
    @AndrewSheldon Рік тому

    What a cool glider. My only bugbear would be 'low or no storage space'. i think ideally you'd want 300kg spare for touring. I'd love to be able to hope around the country. Needing to carry a charger is another I guess. Love the minimalist solution.

  • @_MrOcean
    @_MrOcean 2 роки тому

    Not bad. Not only is it self take off and prolonged flight time, but I'm you may be able to go around if landing is interrupted?

  • @siiv7973
    @siiv7973 Рік тому +4

    Браво! Много красив, много модерен и много икономичен самолет! Добро пилотиране, браво!
    Каква е цената на един нов такъв самолет?

  • @haroldkreye8770
    @haroldkreye8770 2 роки тому +3

    Magnificent. My compliments.

  • @davidong9244
    @davidong9244 2 роки тому +2

    Whats the price? Also ever thought of adding solar? Lastly what if theres no friend to hold up the wing during take off?

    • @hotshot8365
      @hotshot8365 2 роки тому

      They could easily add about 800W solar panels on the wings, it would take all day to charge on its own but would be another good option.

    • @jimpike7445
      @jimpike7445 Рік тому

      Small wheels on the wingtip enable self launch without a wing-man.

  • @MilesCobbett
    @MilesCobbett 2 роки тому

    I am 68 now but used to dream about building a similar vehicle when I was 16. I took glider flying lessons at the glider port in Hemet CA.

  • @BFMaxMaron
    @BFMaxMaron 8 місяців тому +1

    What about Solar Panels on the Wings? Does this plane fly unlimited with that?

  • @jimsvideos7201
    @jimsvideos7201 9 місяців тому

    Great fun! I wonder if you could put a small generator on one end of the fuselage to trade excess lift for battery power. 🤔

  • @JavierRodriguez-zb9ju
    @JavierRodriguez-zb9ju Рік тому

    These are the videos that make UA-cam great. // Estos son los videos que hacen grandioso a UA-cam.

  • @scottamolinari
    @scottamolinari 2 роки тому +2

    Thanks for the video. Did I miss the price? What will this cost to buy?

  • @gavingoff1446
    @gavingoff1446 9 місяців тому +1

    Why can't you move the instrument panel to the sides of the cockpit so you can see straight ahead as in a car.

  • @ashtonhartley2662
    @ashtonhartley2662 9 місяців тому +1

    Beautiful plane. What happens if the battery catches fire?

    • @maartens5069
      @maartens5069 9 місяців тому +1

      same as if a wing broke of mid flight

    • @ashtonhartley2662
      @ashtonhartley2662 9 місяців тому +1

      @@maartens5069 If a wing breaks one could use a ballistic parachute.

  • @douglasmackinlay7574
    @douglasmackinlay7574 Рік тому

    You could drop the heavy batteries by parachute. As a emergency dumping weight procedure.

  • @ИванКопец-б6ы
    @ИванКопец-б6ы Рік тому +1

    Божественно,Фантастика,БРАВО!!!

  • @hamunami
    @hamunami Рік тому +1

    にこにこしてパワフルと言ってるからパワーがあることが良く伝わった。プロペラの格納の様子も良く分かった。

  • @robertmatch6550
    @robertmatch6550 Рік тому

    Thank you for the 'ride'. A very good idea for self launching. What is the approximate glide ratio when the motor is folded?

  • @kiwijonowilson
    @kiwijonowilson 2 роки тому +9

    Thanks Stefan, these look great! Certainly looks simple and quick to deploy and stow (which is good for safety too).
    Did he mention which chemistry the batteries use? Hoping its something pretty stable like LFP or newer similar variants, which are good for cycle life and stability if damaged (unlikely to catch fire).

    • @Fastvoice
      @Fastvoice 2 роки тому +3

      From the AS website: "960 Li-Ion metal-clad single cells connected in parallel and in series with a total capacity of 8.6 kWh, divided into 2 battery strings (one per wing) with BMS."

  • @Tannerxcsoaring
    @Tannerxcsoaring 2 роки тому +3

    Is the throttle disabled if the canopy is open? Just wondering if you accidently bump the throttle up while standing outside, maybe the glider would move forward without anybody in it. Those electric motors are very powerful and having that spinning near your head would be a scary surprise.

    • @rohansully584
      @rohansully584 2 роки тому +1

      Was wondering and thinking the same! yikes!

    • @Slayze1337
      @Slayze1337 2 роки тому +5

      If you bump the throttle up nothing will happen except for the motor extracting. You have to activate the engine unity and then there is still a starter button that has to be pressed after fully extending the motor.

  • @Holliethedog
    @Holliethedog Рік тому

    I'm wondering if I will be able to fly this without lessons? I don't think you need a PPL for a sailplane, looks fun!

    • @SteFly
      @SteFly  Рік тому +1

      In Europe you need a SPL and also in the USA you need a license! It's also a plane and not to compare with driving a car 😅

  • @spinning_cirrus
    @spinning_cirrus 2 роки тому +1

    I could get used to a video every day:). They are great

    • @SteFly
      @SteFly  2 роки тому +1

      Great, thank you! But I can't get used to film and edit one video at the same day :D

  • @jimsvideos7201
    @jimsvideos7201 9 місяців тому +1

    Is this aircraft available with the charging receptable in the wheelwell though? I'd be happier leaving the aircraft unattended with the canopy and motor enclosure closed.

  • @MuzixMaker
    @MuzixMaker Рік тому

    Very cool! Suggest adding wingtip wheels that retract 😊so no wingwalker needed

  • @c.burhan55sw
    @c.burhan55sw Рік тому +1

    how much does this glider cost? cant find any information on the web...

  • @NeoFrontierTechnologies
    @NeoFrontierTechnologies 2 роки тому +3

    Now that's clever flying. The glider looks really good. What's the price ?

  • @larryg.9187
    @larryg.9187 2 роки тому

    ..... In the early '70's i was in Bamberg, Germany in the Army... A glider club was at a nearby airfield... They offered a ride, in a two person glider, for a reasonable price... A truck was at one end of the field with a huge winch like setup... a driver would tow the cable to the glider and hook it... the truck started the 'winch' and the glider pilot did his thing... about the time the cable was straight up, the pilot disconnected, and away we flew for about 10 to 15 minutes... very interesting as I could hear wind and the flexing of the glider, and related noises... My only regret was not doing it again and again ...!

  • @johncarold
    @johncarold 2 роки тому +4

    Hi first time, I was wondering how long it took to get up to cruising alt. I was wondering how loud it was getting there. It sounds extremely loud. I would love to have one. Thanks for the video

  • @dr123hall
    @dr123hall Рік тому

    EZ liftoff idea…retrac wing tip “ squashing hoop slider” manual, pull in from cockpit - weight 1-1/2 lb ea?

  • @itchy108
    @itchy108 2 роки тому +8

    Wow what a awesome power system, such simple controls and impressive performance

  • @Sunny-i8d6y
    @Sunny-i8d6y 4 місяці тому

    I used to fly gliders, never with the motor sadly... I got bored, not of flying, but of everything that made accumulating hours difficult, other people damaging equipment, using it for tourist flights, crap weather all summer etc. I also just wanted to fly at some point even without thermals and be a few hours in the air. This could be so much more if they tripled or quadrupled its battery capacity... I didn't mind catching nice thermals when they were around, but why not have a possibility to just fly a few hours even if they're not available?

  • @jeffreywitty3088
    @jeffreywitty3088 2 роки тому

    neat, moving the prop to a pusher, mounted lower on the tail boom might give better (more nimble) flight characteristics

  • @moonobservergilles5730
    @moonobservergilles5730 2 роки тому +2

    what a beautiful glider

  • @somadama8425
    @somadama8425 2 роки тому +3

    Good usage for the old ASW28 forms, Langes Antares 20E had this 15 years ago. With flaps. And much less noisier, water ballast and 20m

  • @orobinczaia5527
    @orobinczaia5527 Рік тому

    Auxiliary turbine to for regenerative charge. Has it a PRT?

  • @johnvella5834
    @johnvella5834 2 роки тому +5

    It looks like the ASW28-18 with the Electric conversion. I owned one and it flew and handled beautifully even without flaps.

    • @SteFly
      @SteFly  2 роки тому +1

      Yes, it is a ASW28-18 with the electric propulsion system and all the new mods. Great and easy to use glider.

  • @nikhilabraham5000
    @nikhilabraham5000 2 роки тому +6

    Awesome Stefan.. You are bringing in revolution in the field of glider aviation. By the way how much did it cost for this beautiful bird ?

    • @SPFLDAngler
      @SPFLDAngler 2 роки тому +2

      All I could find was. Brand new with no trailer or instruments, 125,000$ USD. So I assume his was more since it has an instrument panel. Most of what I could find was just people in message boards guessing on price based on what it is. I could not find any actual sales pages.

    • @SPFLDAngler
      @SPFLDAngler 2 роки тому +3

      Or rather I should say that there are no sales pages with prices. You have to order one to be built by the company, and they require you to email them to get a quote based on options you want. The quote of 125,000$ is from a secondary company that sells airplanes from the manufacturer, found in the description of google search results, but going to the actual webpage doesn’t show anything that was said in the search result description.

  • @Glidescube
    @Glidescube 2 роки тому

    Can you use the prop as windmill to recharge the batteries??

  • @sanghoonlee5171
    @sanghoonlee5171 29 днів тому

    Can that propeller be used for launching only? Can't it be used for propulsion when you need a little lift?

  • @stanjarmolowicz
    @stanjarmolowicz 2 роки тому

    ha ha ..that smile on your face at the end of the video was telling everything to those who accidentally miss the beginning ... no need to watch in fact and save time ..just kiddin

  • @MusikCassette
    @MusikCassette 2 роки тому +6

    can the rotor be used as a RAT to recharge the battery in flight?

    • @martinleska4292
      @martinleska4292 2 роки тому +1

      Thats not point of glider. RAT turbine on 60+ton aircraft has small impact on its gliding capability, but on single person low weight plane will act like handbrake. Fix pitch propeller has wrong orientation of blades for proper windmilling capability in direction which is used as propulsion propeller. Battery needs 3kW of charging for 4 hours, It is not possible charge battery in air.

    • @MusikCassette
      @MusikCassette 2 роки тому

      @@martinleska4292 I think you don't understand what I am getting at. Of course it would slow down the glider massively. How could it produce useful amounts of energy otherwise. You would use it after you climbed up a good thermo you get out your propellor, take a dive, to climb that thermo again. such using its energy at a later point in the flight (obviously with losses)

    • @martinleska4292
      @martinleska4292 2 роки тому

      @@MusikCassette I understand you, but you probably dont understand why it is not possible use this type fixed pitch propeller for converting wind in to mechanical and electrical energy. Small wind generators with 1m diameter 5 blade optimized turbine wheel can produce not more than 300-500W of electricity. I guess turbine optimized for 100+kph can produce 1,5kW One climb in thermal can take 0,5-1hour. With turbine drag plane could fly 5minutes in dive??? 5min=0,083hr*1,5kW=0,125kWh energy produced in one dive. On board battery capacity is 12kWh. 1 recharging dive and some losses= less than 1% of battery capacity means its totally doesnt worth.

    • @MusikCassette
      @MusikCassette 2 роки тому +1

      @@martinleska4292
      a) I don't really buy your numbers there.
      b)calculating it against batterie capacity does not really make a point because in that configuration you would try for a lower battery capacity. The Interesting number would be the recovering coefficient. And a comaprison in power input compared to photovoltaic. As I see it no one actually tried yet to make it work.

    • @rcmrcm3370
      @rcmrcm3370 2 роки тому

      @@MusikCassette great idea, let's make the system as complicated as possible so that it will both be less reliable and more expensive, and then there's also a potential fire hazard. Brilliant idea