Main Rotor Blades Install EXPERIMENTAL HELICOPTER BUILD SERIES (Part 70)
ฝัง
- เผยแพร่เมื่อ 1 มิ.ย. 2024
- Installing the Main Rotor Blades to my Experimental ultralight one-seat helicopter.
This is Part 70 of the EXPERIMENTAL HELICOPTER BUILD SERIES
00:00 Intro
00:25 Rotor Blade Update
01:56 Blade Center of Mass
04:20 Installing Blade A
06:10 Installing Blade B
07:44 Lead-Lag Control Rods
08:32 Aligning Blades
12:03 Static Balance
13:21 Overview - วิทยาศาสตร์และเทคโนโลยี
Please let me know in the comment section how i can improve the Balancing and/or Aligning of the Blades. I encountered excessive vibration when testing/spinning the blades. I have not exactly tracked the blades jet, but maybe the vibration come also from non-correct aligning or balancing of the blades?
Ho notato che il C.G. della pala è stato fatto solo su una delle due, andrebbe fatto su entrambe, potrebbe differire la misura, in base alla misura della pala con il C.G. più esterno, si bilancia la seconda mettendo il contrappeso di bilanciamento sul C.G. di quella con C.G. più interno.
Il contrappeso lo hai montato sull' estremità della pala più leggera, creando uno sbilanciamento Dinamico... anche se quello Statico sembrerebbe a posto 👍👍
Io sono eli-modellista da anni e la centratura Statica e dinamica delle pale è molto difficile...👍👍👍👍👍👍
@@Saimon164 Thank you very much for your help
@@Saimon164 !нужно отбить конус ротора , для этого нанести на законцовки с торца лопастей краску и при вращении отметить эти риски плавно поднося лист бумаги на шесте и обеспокоится о земном резонансе , на испытаниях , рекомендую шасси закрепить , рад , очень хорошая работа !
@@user-fk1kt5hi6z Thank you very much !
Great video, enjoyed that. One thing I did was to balance the rotors both in the span and chord-wise directions. I aligned the rotor blades as you did, ( I used string) but that wasn't balanced in the chord direction. I had to slightly miss-align the rotor blades so that it balanced in the middle of the rotor mast.
How much friction is there in those teeter hinge bearings ? The way I did it, it took 5 minutes for the rotor to stop teetering after a disturbance so span balancing was accurate.
Blades out of track should be noticed as a vertical vibration and out of balance a horizontal vibration.
Cheers Ben
I'm ready to see the rotors spin up. It's going to be a great day to see all that work coming to fruition.
Looking good!
It is amazing how much work you did put into this project and the attetion to every detail is amazing. Knowledge, skills, tools, time it takes to make every part from scratch, balancing, electronics, wow. You are amazing engineer and I applaud you! Good luck and stay safe there, cheers!
Thank you.
Вот это подход к делу! В авиации нет мелочей!
เมื่อไหร่จะได้เห็นบินสักที รอนานมากแล้ว
It's great to see another video. Please be careful. Don't underestimate how responsive the flight controls might end up being, and plan accordingly.
Bientôt la fin, sacré boulot 👍🏻
Congratulations! Looking forward to more testing! ! ! ! Don't take chances with the helicopter or yourself ! ! ! ! The 'Copter' can be replaced - you can't be replaced!
Felicidades perfecto
harika iş tebrikler test uçuşunu görmek için sabırsızlanıyorum
So close to first flight test! Im excited you have done some great work my friend!
Nice bro very good ❤
👍👍👍Ein faszinierendes Projekt!
Danke Werner
Когда он взлетит жду этого дня с самого начала этого проекта😍
It's amazing stage 🎉🎉🎉😮😮 I'm so exaeeted to see your first flaying
God blees you bro in Jesus name and keep up the good work
Ottimo lavoro, la centratura statica delle pale del rotore principale. 👍👍👍👍
Non occorrono ammortizzatori per il brandeggio delle pale durante il volo traslato ?
Ho visto che i tiranti per il registro delle pale sono rigidi.
Veramente bravo, i miei complimenti per il gran lavoro effettuato, aspetto il giorno del collaudo e del volo ✌✌👍👍👍👍😉😉
best of luck brother👍
(I Built a rotor). BTW, impressive videos and everything else.
Great job!! The design of your helicopter is impressive. One question why did you choose a symmetrical profile of main rotor blades? It has the lowest efficiency against a profil with a flat bottom surface. Using an engine with a small power headroom (as a Rotax 582 have) there is a chance of lift force lack at nominal attack angles. Masquito helicopters are use a profile with a slightly curved bottom, it's probably a concern for efficiency in utilizing of available power.
Thank you. I did use the NACA 0012 symmetrical profile because it is recommended for this type of helicopter in the plans. Originally build in the early 1980`s. Also the production of a symmetrical blade is easier in my humble opinion to produce with the quite basic tools i have. But i agree, for performance it may not be the best option to go with a symmetrical blade.
@@ultralighthelicopter Thanks for the reply! I've been following your project almost from the beginning. Looking forward to the first fly test. A huge number of helicopters are use a symmetrical profile which is a classic as a whole. I'm planning to build an extremely lightweight apparatus (coaxial or with two synchro-rotors), today I'm just concentrating on propellers designing. You will succeed, I believe! Use all kinds of protection and the Lord be with you!
A follow up on my previous suggestion is to reweigh the blade and see if the center of gravity has change in either blade. You didn't mention whether it was a vertical or horizontal diversion. I have about 8000 hrs in rotor craft and have experienced just about every type of vibration there is
EXCELLENT. TELL me, will you ever expose your countenance ?
This is so awesome - please don't roll this into a ball when you first fly it! Is there supposed to be some sort of lockwire/locking nut on the push/pull rods?
Fenomenale 🎉😮😅
👍🏻👍🏻👍🏻👍🏻✌🏻
❤عمل رائع ....تحياتي الخالصة لك
...
هل يمكنك ان تعطيني نصائح في ايجاد محرك سيارة. يكون خفيفا و يعطي احصنة كثيرة ....لان في بلدي لا تتوفر المحركات الخفيفة ...لدينا فقط محركات السيارات
شكرا لك مسبقا
انا اتابعك في كل فيديوهاتك السابقة😊
ugh I was waiting for this video
Was there a torque value for the large attachment bolt? I ask because I didn’t see a torque wrench when you tightened them down.
Tolle Arbeit! Bitte erlaube mir eine paar Bemerkungen:
Die komplette Kraft des Motors geht über die zwei Steuerstangen mit den 2 gegenläufigen Gewinden. Diese wird auf Druck beansprucht. Kann es sein, dass sie sich unter der Last verbiegt/ etwas nachgibt? Dadurch würde ggf. eine eigentlich kleine dynamische Unwucht verstärkt werden.
Muss das Ausgleichsgewicht nicht im Schwerpunkt des Blatts montiert werden? Anderenfalls wird durch das Ausgleichsgewicht der Schwerpunkt des Blatts verändert. Haben die Ausgleichsgewichte den gleichen Abstand vom Drehpunkt?
Wenn sich die Rotorblätter unter Last verbiegen, und die Blätter nicht vollkommen symmetrisch aufgebaut sind, entsteht erneut eine Unwucht.
Schau mal im Netz unter "Räder auswuchten, wie hat man das früher gemacht?". Da gibt es gute Hinweise. Man wird das nicht direkt auf einen Rotor übertragen können, weil ja der Rotor im Gegensatz zu einer Felge keine starre Einheit ist.
Ich weiß, das sind keine Lösungen, sondern nur Gedanken :-).
Mit Begeisterung beobacht ich Deine großartige Arbeit. Weiterhin viel Spaß und Erfolg bei der Arbeit! Lieben Gruss aus Deutschland.
Can you explain why your rotor has a fixed lead/lag design? I thought they should be able to move dynamically? Awesome project.
Hy. On a teetering rotor system used in 2 bladed helicopters you don't need lead lag hinges because you have the geometry of the teetering hinge, which is the blade flapping hinge for both blades on a single flapping axis.
Just thought, but could part of the problem be with shifting 0f internal foam in the blade. Even though the whole blade weight remains the same there is a difference is rotational weight if internal items shift to the outer portion of the blade in full rotation. The further items shifting towards the outer rim, kind of like false gravity.
Bravissimo!!! A quando il primo volo?
Hopefully still alive to watch part 1000
👏👏
Доброго здоровья! Разве не сместится центр масс с прибавкой грузчика в торец лопасти?
Что будет если не учитывать этой погрешности?
Лопасти имеют одинаковый вес?
Автор а есть ли примеры таких же вертолётов?
This build is based on CH7, Skylarc or Furia. You can find Pictures of this model online
Nice video. One question...don't the rotor blades already align radially due to centrifugal force? Why the manual alignment step? Greetings Ralf
Hy Ralf. Thanks. The Aerodynamics acting on the Main Rotor Blades are quite complex. Content explaining the aerodynamic forces on the helicopter, for example the forces acting on the Advancing and Retreating Blades you can see with this link: th-cam.com/video/LTfC5loEPgM/w-d-xo.html
@@ultralighthelicopter Thank you very much. I'd like to take a look. Greetings Ralf
❤Great work...my sincere regards to you
...
Can you give me tips on finding a car engine? It should be light and produce a lot of horsepower...because in my country there are no light engines available...we only have car engines
Thank you in advance
I follow you in all your previous videos 😊
Do the rotor blades have a twist? Blade Twist.
Yes, each Blade has a 6° twist from root to the tip. You can see how i build the first Generation Blades here: th-cam.com/video/-Fll1N8wO2s/w-d-xo.html
@@ultralighthelicopter Wow, it is basically ready for test flight!?
Para cuando las primeras pruebas.?
They are in progress
Thanks brother I'm moved...but my videos are not playing to see our first flight, thanks again.
It is in working progress. Kind regards to you.
@@ultralighthelicopter Big up brother... I'm just behind step by step ,push on God bless you.
First flight test?
The first blade spin-up test was done and is in editing progress.
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!
Hi bro rotax 582 engine how many price have
Hello please why can't play this video 😢