Пікірлер

• 
  @odanewilson4 күн бұрын

  I need 900 boxes of those to buy

• 
  @ThanHtayMaung-wp4ve5 күн бұрын

  😊😊😊😊

• 
  @ingolfschmacke6 күн бұрын

  My jaw is still open-- speechless --brilliant - THANK YOU

• 
  @user-kl9gb3zk8h7 күн бұрын

  DAY co phai la dong co May bay hoi de nhi the chien khong nhi

• 
  @jepsdog385910 күн бұрын

  Hats off to the old buggers that machined all those parts.

• 
  @pierrejansen27029 күн бұрын

  Indeed, these rotary engines designed in the early days of aviation, were real Masterpieces of engineering. No computer driven machinery (CNC). Thanks for watching !!

• 
  @jepsdog385910 күн бұрын

  My god the machining of all those parts and the tolerances to be held way back then , no cnc machining centers back then .As a retired machinist my hats off to that generation of machinists.👍🏻👏👏👏

• 
  @pierrejansen27029 күн бұрын

  Indeed, the rotary engines in the early days of aviation were real Masterpieces. As you said,, no CNC etc. Perhaps just a Faber Castel slide ruler was being used during the design phase ;-) Thanks for watching !!

• 
  @xwind197013 күн бұрын

  How did they COUNTERBALANCE these rotary engines???

• 
  @pierrejansen27029 күн бұрын

  All the rotating parts were weight balanced, e.g crankcase, auxiliary rods, pistons, and cylinder parts. Thanks for watching !!

• 
  @omniriven980624 күн бұрын

  What a technological achievement to protect ourselves from pidgeons and crows. ...

• 
  @pierrejansen270216 күн бұрын

  Indeed ! Thanks for watching !!

• 
  @sunilmisra125 күн бұрын

  Amazing engineering

• 
  @pierrejansen270216 күн бұрын

  Indeed, a Masterpiece of engineering. Thanks for watching !!

• 
  @user-fb9of7gt2y27 күн бұрын

  where was fuel system

• 
  @pierrejansen270216 күн бұрын

  Fuel was provided through the petrol tubes and nozzle in the crankshaft to the crankcase, which acted like a mixing chamber. Thanks for watching !!

• 
  @williamrobinson7435Ай бұрын

  Perhaps small, simple versions of this principle could have a modern application, or small engines that work this way, yet use different fuel.. 🌟👍

• 
  @pierrejansen270216 күн бұрын

  Yes perhaps .... Thanks for watching !!

• 
  @mreza84Ай бұрын

  A masterpiece of engineering, a miracle of sorts.

• 
  @pierrejansen2702Ай бұрын

  Indeed and all was done without computers, CNC etc. Perhaps they used a Faber Castell slide rule ... Thank you for watching !!

• 
  @gordonroberts5227Ай бұрын

  Thanks for giving me a better understanding of how it works. I just watched a video of a Nieuport 28 and was wondering why it didn't sound like it was running on all cylinders. Was it a way of controlling the engine speed . I do remember at an airshow in New Zealand the Bleriot would cut the ignition to slow the plane and hopefully it would start back up . Thanks for a great video.

• 
  @pierrejansen2702Ай бұрын

  You are welcome!

• 
  @xanadu-ui5onАй бұрын

  👏👏👏👏👏👏

• 
  @pierrejansen2702Ай бұрын

  Thank you and thanks for watching !!

• 
  @christophe85492 ай бұрын

  Super mais j’imaginais que seule l’hélice tournait et que le moteur restait fixe.

• 
  @pierrejansen2702Ай бұрын

  No, it is a rotary engine, meaning that the propeller is bolted to the crank case and the whole engine rotates around the stationary crank shaft. It is shown at the end of the video. You may also want to watch the real engine run at kzread.info/dash/bejne/Z41qstV9lsisepc.html Thanks for watching !!

• 
  @christophe8549Ай бұрын

  @@pierrejansen2702Merci à vous pour l’info. Derrière le château de Versailles, sur un aérodrome il y avait 2 moteurs du Constellation. De mémoire 2 rangées de cylindres, peut être 18 en tout et sûr qu’une telle masse ne pouvait pas tourner. Encore merci pour le lien et vos vidéos.

• 
  @coryc31572 ай бұрын

  Wow! This was really informative. Thank you for making this. It’s neat to see how things have evolved in piston driven engines. Despite their complexity and danger level what were their drawbacks? Any known issues? Also was balancing a huge factor?

• 
  @pierrejansen27022 ай бұрын

  Thank you for your compliments. The major drawback was the need for more power. Adding additional cylinders (second row) was attempted. To keep the centrifugal forces acceptable the RPM of the engine was quite low (1200-1500 RPM) Thanks for watching !!

• 
  @mardezmalak39082 ай бұрын

  absolutely great,what software you work whit it?

• 
  @pierrejansen27022 ай бұрын

  Thank you for your compliment. I use V8i MicroStation (Bentley Systems) for all 3D work and animations. MicroStation has the Modo rendering engine embedded. Thanks for watching!!

• 
  @PeoplesScience3 ай бұрын

  For a while this operation was stuck in my head since I couldn't comprehend how such precise synchronization could have been achieved without with almost-contemporary advances in engineering mathematics and firearm technology then I realized: The trigger is not automatic. The trigger is ENGAGED and then can be fired at will (maintaining synchronization) until it is disengaged. What a very neat piece of engineering, but I am sure it would've frustrated the pilots that the machine gun fire was not as immediate as a move of the finger. Even then the real beauty is in creating cam gear that could 'sense' the rotation of the propellor/crankshaft at such high rotational speeds in era where useful infrared detection was a piece of sci-fi! Why hasn't anyone written a book on the mathematics that went into older technologies??

• 
  @pierrejansen27022 ай бұрын

  Indeed, the firing triggering (engagements) happens when the rollers go over the cam which is mounted onto the engines main gear. There is some documentation but it's definitely something someone could have written a book about. Thanks for watching !!

• 
  @samanthamorissette40903 ай бұрын

  excellent explanation; i came for the explanation, and stayed for the music

• 
  @pierrejansen27022 ай бұрын

  Thank you for your compliments. Glad to hear you like the music I've composed, played and recorded. Thanks for watching and listening !!

• 
  @dhitoaprabowo81923 ай бұрын

  How to intake air from the outside engine still confused

• 
  @pierrejansen27022 ай бұрын

  The Gnome induction cycle - the petrol line is connected to the hollow (stationary) crank shaft (doesn't rotate. Through a petrol tube within the crank shaft, the petrol gets drawn into the crank case via the petrol nozzle on the front end of this tube. When a piston reaches its bottom position (BDC - inlet stroke), the petrol gets drawn into the appropriate cylinder though the 32 holes (ports) at the skirt of the cylinders. The petrol within the cylinders will mix with the air that was drawn into the cylinder during the inlet stroke, because the valve is open. (see 8:47 etc. video frames) Note that this valve handles both the inlet- and exhaust flows (single valve = monosoupape in French). Hope this helps and thanks for watching !!

• 
  @dennisjones21243 ай бұрын

  Amazing to watch, love seeing how all the connections are made....

• 
  @pierrejansen27022 ай бұрын

  Thank you for your compliments and thanks for watching !!

• 
  @user-sc1ps4hj9y3 ай бұрын

  🗽👁👁👁🌹🗝💗🤴🏻👸👏👏👣👣💎💍👑💛🌏💸🇧🇹🇧🇸🌍🔥☀🌙💳115459

• 
  @dennisjones21243 ай бұрын

  WOW, excellent animation. So cool to see such engineering from 110 years ago.....amazing to watch..!!!!

• 
  @pierrejansen27022 ай бұрын

  Thank you for your compliments and thanks for watching !!

• 
  @user-qs6qm2ox2t3 ай бұрын

  Qual RPM desse motor ?

• 
  @pierrejansen27023 ай бұрын

  Approx 1250 RPM (1450 max). Thanks for watching !!

• 
  @NorthernChev3 ай бұрын

  Except for that part where the excessive rotational mass made it extremely difficult to turn the plane in the same direction as rotation... Essentially you could only effectively turn the plane one direction with any ease.

• 
  @pierrejansen27023 ай бұрын

  The often-repeated tales about tricky aircraft handling due to the gyroscopic effects of rotating engines are exaggerated. The rotational mass rotates at approx. 1250 RPM max. Several of my contacts (pilots) flying rotary engine powered WW1 (replica) planes, indicated that they hadn’t noticed any excessive gyroscopic effects. An experienced pilot automatically compensates for those things. Turns to the right might be a little quicker, but that is because the rotary engine tends to pull the nose down [in that direction], and you make a quicker descending turn than you make a climbing turn. Thanks for watching !!

• 
  @user-ri6dm6iz2h3 ай бұрын

  Yes yes yes yes yes yes yeeeeeeessssss ..

• 
  @pierrejansen27023 ай бұрын

  Thank you and thanks for watching!!

• 
  @Triplechorus24 ай бұрын

  Thanks for the great video. I still have one question: How do you ensure that the oil thrown outwards by centrifugal force gets back to the center? Is there a small oil pump coupled to the valve train in each cylinder head? Greetings from Germany! 🇩🇪🤝

• 
  @pierrejansen27024 ай бұрын

  No, the oil is just thrown out into the environment. Not as bad as it seems though. Castor oil is a thick, odorless oil made from the seeds of the castor plant (vegetarian). Thanks for watching !!

• 
  @Danuke7084 ай бұрын

  Owh i've always wonder how that works

• 
  @pierrejansen27024 ай бұрын

  Indeed, seems very logical. The video, I followed the assembly procedures as outlined in the Gnome 9-B2 100 h.p. technical manual (instruction Book No.2). Thanks for your feedback and for watching !!

• 
  @Danuke7084 ай бұрын

  @@pierrejansen2702 amazing work👍

• 
  @BiffTannen19834 ай бұрын

  Killer tune, brother. Actual "music", that enhanced the video, instead of ruining it! BRAVO! 👏👌❤🎉

• 
  @pierrejansen27024 ай бұрын

  Thank you, glad you liked it! Thanks for watching (and listening). Cheers !

• 
  @rescue2704 ай бұрын

  The cylinders were not installed on the case first. It's too hard to install pistons wirh rods attsched from inside the case. The master and link rods were first assembled. Then the crankshaft and crankcase were assembled around the master and link rod assembly, with the rods protruding from the cylinders. The pistons with rings installed were attached to the rods, THEN the cylinders were installed over the pistons and secured to the case.

• 
  @pierrejansen27024 ай бұрын

  Indeed, seems very logical. In the video, I followed the assembly procedures as outlined in the Gnome 9-B2 technical manual (Instruction Book N0.2) Thanks for your feedback and for watching!!

• 
  @rescue2704 ай бұрын

  @@pierrejansen2702 I meant to say the rods protrude from the cylinder holes in the crankcase, but I guess I got ahead of myself. I've had practice assembling radial engines, and building up the bottom end, or "pineapple," as we call it, always happens first. Then cylinders installed over the pistons using a ring compressor tool.

• 
  @pierrejansen27024 ай бұрын

  @@rescue270 Yes, as I indicated, your response was very logical engineering thinking. But, the video is a graphical representation on the Gnome manual, reflecting the procedure that was used. Thanks for your feedback.

• 
  @dntlss4 ай бұрын

  Man your videos are amazing,subscribed for sure.

• 
  @pierrejansen27024 ай бұрын

  Glad you like them! Thanks for watching !! Cheers !

• 
  @dntlss4 ай бұрын

  I was wondering.... (great video BTW) the Focker DViii was powered by this engine (J version) and it came out towards the last moments of WW1,why use this antiquated engine (just my opinion) engine and not a more advanced water cooled engine like a Mercedes or BMW? what was the reason behind this? I edited my comment cause i wanted to add,i didn't mean the engine wan antiquated,it is a work of art really but i mean a water cooled engine is more simple and i would say safer that something like this.

• 
  @pierrejansen27024 ай бұрын

  Thanks for your compliment ! The answer is weight. Weight was an important issue during the early days of aviation. Rotary engines have no need for cooling liquid, pipes, water jackets, radiator or batteries. They provided excellent self-cooling. The rotating crankcase/cylinder assembly created its own cooling airflow, even with the aircraft at rest. Because of the rotating mass, no flywheel is needed. They provided and excellent power to weight ratio. Thanks for watching !!

• 
  @user-hk1yc5gp1j4 ай бұрын

  ❤❤❤❤❤❤❤❤❤❤❤❤❤

• 
  @pierrejansen27024 ай бұрын

  Thank you !!!

• 
  @xavierolle4 ай бұрын

  Amazing 😮😮😮 🤯🤯🤯

• 
  @pierrejansen27024 ай бұрын

  Thanks and thank you for watching !!

• 
  @Corvacar4 ай бұрын

  I would think that the disadvantage would far outweigh any advantage. I think that this is proven by the fact that this concept never moved forward very far. My thoughts are that the rotating mass would create a tendency for the entire Plane would try to react against the rotating Mass.

• 
  @pierrejansen27024 ай бұрын

  Weight was an important issue during the early days of aviation. Rotary engines have no need for cooling liquid, pipes, water jackets, radiator or batteries. They provided excellent self-cooling. The rotating crankcase/cylinder assembly created its own cooling airflow, even with the aircraft at rest. Because of the rotating mass, no flywheel is needed. They provided and excellent power to weight ratio. The design was quite successful. During the period 1908-1918, over 200,000 rotary engine were built. Despite some drawbacks, nearly all Aero planes during WW1 were powered by rotary engines (Clerget, Gnome, Le Rhone, Oberursel, Bentley etc.) Regarding the rotating mass, several of my contacts (pilots) flying rotary engine powered WW1 (replica) planes, indicated that they hadn’t noticed any gyroscopic effects. The often-repeated tales about tricky aircraft handling due to the gyroscopic effects of rotating engines are exaggerated. Turns to the right might be a little quicker, but that is because the rotary engine tends to pull the nose down [in that direction], and you make a quicker descending turn than you make a climbing turn. An experienced pilot automatically compensates for those things. Thank you for your feedback and thanks for watching !!

• 
  @Corvacar4 ай бұрын

  @@pierrejansen2702 Thank You very much. That was very factual and well said.

• 
  @babotond4 ай бұрын

  and its not even dime a dozen, cluncky put together animation, it's genuinely cinematic, i felt like watching an nimated short or stg... wow!

• 
  @pierrejansen27024 ай бұрын

  Thanks again for your feedback and compliments !!

• 
  @babotond4 ай бұрын

  how many individual pirces does it have?

• 
  @pierrejansen27024 ай бұрын

  I forgot to count them, but there are many !! For this 10 minutes animation video I roughly had to render 10.000+ image frames. Indeed, It's time consuming. Not something you can do on a rainy afternoon ! Cheers

• 
  @a-fl-man6404 ай бұрын

  probably more work went into the animation than building the real engine. impressive

• 
  @pierrejansen27024 ай бұрын

  Yes indeed, the animation and rendering of all the images took quite some time. Thanks for watching and your feed back. Cheers !

• 
  @davemilster5 ай бұрын

  Fabulous video animation of a remarkable engine. Dumb question. Why were each cam follower on a different set of cams? Wouldn’t one stationary cam provide the identical lift for all nine pushrods?

• 
  @pierrejansen27025 ай бұрын

  Thanks for your compliments. The valve timing is different for each cylinder. This is achieved by using 9 (identical) cams, each being positioned at 40degr angle offset. Thanks for watching !!

• 
  @davemilster5 ай бұрын

  @@pierrejansen2702 Thanks for the reply. Is this because the cams are on the rotating section and not the stationary section?

• 
  @pierrejansen27025 ай бұрын

  They are on the rotating section. The cam shaft itself is driven by two planet gears which are mounted onto the front cover of the Valve Gear case. These planet gears drive the cam shaft, causing it to rotate at half the engine speed, thus providing the correct timing for a 4 stroke 9 cylinder engine.@@davemilster

• 
  @bernhardtiedemann67035 ай бұрын

  In Deutschland wurde dieser Motor als Oberursel Gnom nachgebaut und war extrem erfolgreich. Der rote Focker Dreidecker des Roten Barons Richthofen hatte diesen Motor.

• 
  @pierrejansen27025 ай бұрын

  Yes, it indeed was the Gnome engine that was build under license by Oberursel. I have been checking the Oberursel as well, searching for specific details. Thanks for your comment and thanks for watching !!

• 
  @DesmoGabe5 ай бұрын

  Video davvero ben fatto, bellissimo!

• 
  @pierrejansen27025 ай бұрын

  Thanks for your feedback and compliments. Thank you for watching !!

• 
  @alfredoluisbaute15795 ай бұрын

  Una gran obra de arte y de ingeniería mecánica....

• 
  @pierrejansen27025 ай бұрын

  Indeed, the engines were Masterpieces of engineering. Designed and manufactured with computers, CNC. Just with the limitation of the early days of aviation .... pencil and paper and perhaps a Faber Castel slide ruler ! Thanks for watching !!

• 
  @andrewtalbot73196 ай бұрын

  The air pump, driven off the back of the engine, pressurises the fuel tank and provides a fuel flow irrespective of the attitude of the aeroplane.

• 
  @pierrejansen27025 ай бұрын

  Yes indeed, correct. However, some engines in these early days of aviation didn't have an engine driven air pump and used the Rotherham type of air pump, mounted on a wing strut. The Rotherham pump was driven by a small propeller in the slipstream of the main propeller. In addition to the pressurized fuel tank, the Sopwith Camel had a (small) gravity tank mounted above the main tank, mainly used in (emergency) situations where there was no air pressure. Thanks for your comment and for watching. Cheers !!

• 
  @00313x6 ай бұрын

  One hell of a Gyroscope.

• 
  @pierrejansen27026 ай бұрын

  Yes it would be, but not really an issue because the RPM of the engine is less the 1500. Thanks for watching !!

• 
  @andrewtalbot73196 ай бұрын

  Just loved this. Replayed a dozen times to understand the operation but got it in the end. Brilliant animation! Thanks so much.

• 
  @pierrejansen27026 ай бұрын

  Thank you for your compliments and I'm glad to hear the video helped to understand the engine's operation. Thanks for watching !! Cheers (and all the best for 2024)

• 
  @Dan-cn3ei6 ай бұрын

  Amazing what can be done with computers. But whats even more amazing is the crafmanship of the people that made these engines all with old mechanical mills and lathes. No CNC back then.

• 
  @pierrejansen27026 ай бұрын

  Indeed masterpieces. The craftmanship of the people that made these engines is truly amazing. No CNC. All was designed without computers, just pencil on paper, rulers, triangles and perhaps a Faber Castel slide ruler. Thanks for watching. Cheers (and best wishes for 2024)

• 
  @randygroves11146 ай бұрын

  Fabulous video, this engine is a work of art ,thank you for your effort

• 
  @pierrejansen27026 ай бұрын

  Thank you for your compliments. Indeed these engines are masterpieces. The craftmanship of the people that made these engines is truly amazing. No CNC. All was designed without computers, just pencil on paper and perhaps a Faber Castel slide ruler. Thanks for watching. Cheers (and best wishes for 2024)

• 
  @richardkan84996 ай бұрын

  Beautiful work. How do the electrical connections to the spark plug wires work if the cylinders run around like this?

• 
  @pierrejansen27026 ай бұрын

  Thanks for your compliments.The magneto High Tension leads have contact, via a carbon brush, with the contact segments on the distributor disc. The distributor, mounted to the rear of the crankcase, therefor rotates with the engine. The sparkplug leads are connected to the distributor segments, so the HT voltage is transferred via the carbon brush, striking the segmens to the appropriate sparkplug. Hope this answers your question

• 
  @user-gd1or8cy6s6 ай бұрын

  Hello dear professor, can I contact you through WhatsApp? I have plans for a helicopter. Can you do me a favor and turn it into a 3D drawing?

• 
  @pierrejansen27026 ай бұрын

  Thanks for watching my videos. Regarding building a helicopter, assuming you want to build a model, there are many kits available that will help you with your project. I'm mainly interested in 3D modeling of WW1 related aviation. Cheers !

• 
  @user-gd1or8cy6s6 ай бұрын

  @@pierrejansen2702 May God grant you success, our honorable professor. I watched the video tapes and the modeling that you do was very beautiful. I wanted a model that I owned, but I would have liked the drawings to be like the model that you make. It is very beautiful and your design is wonderful in modeling.

• 
  @pierrejansen27026 ай бұрын

  Thank you for your compliments and kind words. You made me blush. It's these responses that keep me creating these videos. Thanks for watching !!

• 
  @user-gd1or8cy6s6 ай бұрын

  @@pierrejansen2702 Continue designing, it is beautiful and wonderful. I follow you from Iraq and admire your work

• 
  @LBG-cf8gu6 ай бұрын

  nicely done!

• 
  @pierrejansen27026 ай бұрын

  Thank you for your compliments and thanks for watching the video !!