@@inakakoubouKANAI c'est un problème structurel, aucune structure d'os, de muscle et de plumes ne peut supporter de fort facteur de charge et de grandes vitesses tout en garantissant un bon contrôle du vol, avec l'allongement maximal des faibles vitesse de vol; De plus, Le besoin en répartition de portance, et en portance globale est très différent, et est plus facile à gérer lorsque l'envergure est réduite et la géométrie de l'aile modifiée. Faibles vitesses impose grand allongement. faible allongement, grande vitesse possible, Nous n'avons rien inventé, la nature savait déjà tout bien avant nous.
Hi Kanai, do you feel any positive evolution by using the Bell shape lift management ? does your Zwing system fit with it? please let me know , congratulations what is your actual wing loading in gr/dm² ?
The shape of the wings is evaluated based on the feeling when thrown by hand and the way it glides. I have never calculated the wing loading, but I designed it to be about 750g for a wingspan of 1500mm to be close to that of a real bird. I feel that if the wing loading is reduced, the control method will change.
@@inakakoubouKANAI In my humble opinion, without having calculated it, i can see on your plan that it's a moderated but nice foil twisting evolution, and i think that you can push forward to a bit more twisted values, with more chambered foils at center of wing (rib 1), and really thinner foil at tips. Less induced drag on the tips will help for better performance, handling, introduicing less corrections , deflections and more yaw stability . Thick foils doesn't mean that they are well adadpted to the needs, in particular on tips of wing, ribs 6 7 8 9 could be twice thinner in a nice progression, keeping the same chamber. I would suggest to keep this geometry of wings , which allows for easier rear Center of gravity. The bell shape lift distribution is the major key of birds flying without fin. I also see 150 grams less on this model to achieve something like 23gr/dm² instead of 30 (which certainly introduce a lot of sink rate and unwanted minimal speed). Removing your motor and putting your 2 tail servos in front of the CoG would help in this direction. Your Flap and ailerons are nice to my eyes and seem to help the control in a good way. Congratulations again for all this pasionate work and for making us dreaming like children ! My message is only in a helping purpose, You are the master !
Another clip from high performance sailing where a sail with 2 skins is used and an asymmetrical mast that rotates to control the leading edge of the sail/wing. The depth of the sail is manipulated as required by the use of the outhaul, which also controls the trailing edge of the sail in combination with battens in the sail. In these boats they are also linking the sail controls, which may be a complication when problems arise seemingly requiring a process to be adhered to, rather than simply directly manipulating the out-of-trim control surface. th-cam.com/video/8UQzx688o0E/w-d-xo.html
@@inakakoubouKANAI I'm guessing that you didn't mean Soft wing ™th-cam.com/video/a8UC9ngQYuc/w-d-xo.html Changing the camber of the airfoil, which may also change the chord of the wing and also impact the twist of the wing, seems complex.
@@inakakoubouKANAI In elite sailing there was a trend towards hard surfaces in wingsails, but they were complex ,expensive & not particularly fault tolerant. To control cost, a simple double skinned sail that attaches to corners of the D-shaped mast is currently used, with a unique approach being to independently control each sail-skin, which may be significantly in contact with each other. The Swiss "Soft Skin" (previously linked) looks to be another approach entirely, where the shape is controlled by geometric insertions that reside between the skins. th-cam.com/video/hbPTnF6liF8/w-d-xo.html
とにかく技術が凄いですね、憧れのハヤブサのラジコンを作れるとは羨まし過ぎます。
ありがとうございます。現在、ハヤブサの改良を考え中です。
Very nice work.
Thank you.
THIS is so amazing ! I really love it !
Thank so much for sharing !!
Best regards, Stephan
Thank you for watching.
Looks really fantastic in flight.
Thank you.
Love watching you work 😊
Thank you.
I enjoy these are balsa wood, not 3D printed. The craftsmanship is so impressive.
For me, it's easier to model and saves time.
Fantastic flying 'bird'! How are real birds reacting to the sight of your craft?
The early models were attacked, but the modern models seem to have become friends with the birds and fly together with them.
Just found your channel. Your building skills are amazing!
Is there any chance to get/ buy plans for this bird?
Best regards from Slovenia!
飛びがハヤブサそうろうですね！
これで翼をたたんでダイブすれば・・・・・・・・
これは難しいですね！
どの機体でも設計過程と製作過程は参考になります。
翼端の翼厚を厚くされた事は、地道な実験の大きな成果ですね！
ダイブするときは、翼があることによる揺れが大きな問題だと感じています。ハヤブサが翼をたたむのは、速度を上げるためだけでなく高速時の安定にも関係しているのではないかと思っています。翼をたためないのなら、振動を制御する方法を考えていくべきか？
高速時の安定、ご明察です。
ハヤブサやチョウゲンボウが急降下を行う際は、正面から見て翼と胴体がどうがまえ（匚を右に90°回転）になるような形に窄めた翼を肘部分から曲げ、肘を水平に開いた「小さく前倣え」に似た体勢を取ります。これにより手首部分（初列風切）を左右に振ることでヨーと、尾翼を上下左右に動かす事でロールとピッチを制御して獲物にまっしぐら、といった感じの滑空を行います。
なので、急降下のアクションを行うとなると全く別の構造になるので専用の変形機構を取り入れる他は再現は難しいと思います。
ありがとうございます。
@@inakakoubouKANAI c'est un problème structurel, aucune structure d'os, de muscle et de plumes ne peut supporter de fort facteur de charge et de grandes vitesses tout en garantissant un bon contrôle du vol, avec l'allongement maximal des faibles vitesse de vol; De plus, Le besoin en répartition de portance, et en portance globale est très différent, et est plus facile à gérer lorsque l'envergure est réduite et la géométrie de l'aile modifiée. Faibles vitesses impose grand allongement. faible allongement, grande vitesse possible, Nous n'avons rien inventé, la nature savait déjà tout bien avant nous.
Are any of your successful creations be available for purchase in the future? Love the falcon!
At the moment, I'm so busy making new things that I don't think I'll ever finish them. I'm also thinking about modifying the falcon.
Ich bin wirklich überrascht wie stabil er auch ohne Seitenruder in den Kurven fliegt ohne böse Tendenzen!
Das ist ein schöner Kommentar. Das ist es, worüber ich am meisten nachdenken muss.
Hi Kanai, do you feel any positive evolution by using the Bell shape lift management ? does your Zwing system fit with it? please let me know , congratulations what is your actual wing loading in gr/dm² ?
The shape of the wings is evaluated based on the feeling when thrown by hand and the way it glides. I have never calculated the wing loading, but I designed it to be about 750g for a wingspan of 1500mm to be close to that of a real bird. I feel that if the wing loading is reduced, the control method will change.
@@inakakoubouKANAI In my humble opinion, without having calculated it, i can see on your plan that it's a moderated but nice foil twisting evolution, and i think that you can push forward to a bit more twisted values, with more chambered foils at center of wing (rib 1), and really thinner foil at tips. Less induced drag on the tips will help for better performance, handling, introduicing less corrections , deflections and more yaw stability . Thick foils doesn't mean that they are well adadpted to the needs, in particular on tips of wing, ribs 6 7 8 9 could be twice thinner in a nice progression, keeping the same chamber. I would suggest to keep this geometry of wings , which allows for easier rear Center of gravity. The bell shape lift distribution is the major key of birds flying without fin. I also see 150 grams less on this model to achieve something like 23gr/dm² instead of 30 (which certainly introduce a lot of sink rate and unwanted minimal speed). Removing your motor and putting your 2 tail servos in front of the CoG would help in this direction. Your Flap and ailerons are nice to my eyes and seem to help the control in a good way. Congratulations again for all this pasionate work and for making us dreaming like children ! My message is only in a helping purpose, You are the master !
Thank you. I'll do my best as an old man's hobby.
Thank you for the valuable information. I will try my best to think about it.
Time to add fpv system, HD camera system will excellent
Due to budgetary constraints, tracking is done manually.
接着に使ってる透明の液体はなんですか？いつかマネして作ってみたいです
「OKボンド 瞬間 BW(バルサ用）」です。ラジコン模型を扱う店（あるいはネット）で売られています。買い置きをしても長持ちするので、これを使っています。もしかするとDIYの店で売られている瞬間接着材でも、同じ性能の物を買えるかもしれません。瞬間接着材を使うときに吹き付けているのは硬化推進剤の「お助けプライマー」で、これはとても便利で、絶対に必要ですが、売っている模型屋さんが少ないです。動画で赤いラベルの「TITE BOND」が出てきますが、これも模型屋で売られています。模型屋以外で見たことがあるのは、ジョイフル本田ぐらいです。これは木材の接着には、かかせない接着材だと思っています。健康チェックは、されていると思うのですが、接着材のアレルギーになる人もいるようです。安全な接着材を使いたいと思っています。
@@inakakoubouKANAI ありがとうございます。近くに模型屋がないのでネットで同じものを探そうと思います！
接着剤は百均のものしか使ったことがなく、匂いがキツくて体調悪くなるので、とても参考になりました。
匂いがキツいということはレジンだと思いますが、手につけることは無いようにした方が良いと思います。私は古い人間だからかもしれませんが、用途にあった接着材を適切に使うと3Dプリンター以上に効率的だと感じていて、なかなか3Dプリンターに進めません。
Another clip from high performance sailing where a sail with 2 skins is used and an asymmetrical mast that rotates to control the leading edge of the sail/wing. The depth of the sail is manipulated as required by the use of the outhaul, which also controls the trailing edge of the sail in combination with battens in the sail. In these boats they are also linking the sail controls, which may be a complication when problems arise seemingly requiring a process to be adhered to, rather than simply directly manipulating the out-of-trim control surface. th-cam.com/video/8UQzx688o0E/w-d-xo.html
Thank you for the interesting information. It's a similar idea to the soft wings.
@@inakakoubouKANAI I'm guessing that you didn't mean Soft wing ™th-cam.com/video/a8UC9ngQYuc/w-d-xo.html Changing the camber of the airfoil, which may also change the chord of the wing and also impact the twist of the wing, seems complex.
I see. I mistakenly thought that the camber was changed by using a double thin wing.
@@inakakoubouKANAI In elite sailing there was a trend towards hard surfaces in wingsails, but they were complex ,expensive & not particularly fault tolerant. To control cost, a simple double skinned sail that attaches to corners of the D-shaped mast is currently used, with a unique approach being to independently control each sail-skin, which may be significantly in contact with each other. The Swiss "Soft Skin" (previously linked) looks to be another approach entirely, where the shape is controlled by geometric insertions that reside between the skins. th-cam.com/video/hbPTnF6liF8/w-d-xo.html
That's a great idea and system.
lo quiero me lo regalas por favor
Me alegra oírte decir eso. Todas son máquinas experimentales y se modifican hasta que se estropean.
@@inakakoubouKANAI como hago para tenerlo
Lo siento. Todos los aviones se modifican a modo de experimentos hasta que se estropean.