Wankel vs Radial vs Rotary | Its Parts, Working & Applications | Explained

[@thevortex6754]

As an engine and tank nerd, I love that you mentioned the tanks that used the beautiful radial engines. That gives someone a little bit of history

[@sandervanderkammen9230]

All of the successful tanks use aircraft engines

[@lawrencelewis2592]

My father was a WW1 aircraft nut. He told me about the rotary engine. In 8th grade science class we learned about aircraft and their engines. The teacher didn't mention rotary engines. I told him about them and he said that there was no such thing. He was an idiot.

[@leneanderthalien]

many did not understand the difference between a gnome type rotary and a common radial, both have french origins, th e rotary was think to reduce weight and improve cooling, but with the improving from the classic piston engine inline and radials, the rotary was fast obsolete, because high consumption (oil and gas) and heawy gyroscopic effects (who increase with the power), after 1917 had the classic engine same weight to power ratio or better as the rotaries, so for example, the Renault V12 12F liquide cooled engine from the 1917 Breguet XIV deliver 280hp and was far better and more reliable...The Renault 12cyl was fast improved and the power rise up to 454hp in 1918, was the first aircraft engine fitted for tests between 1918 and 1920 with a "Rateau" turbocharger to improve climb performances, but this was unreliable and not serial built, it was still too early for the turbocharger, who came back in WW2 on the Allison V1710 from the P38...

[@doesituk]

A point about the rotaries is that the pistons only reciprocated relative to the cylinders, not to the aircraft, as they orbited around the fixed crankpin. This should have made the engine run very smoothly with little vibration; a good characteristic for a wood and fabric aircraft. There was no way to attach an exhaust system however, so the gasses together with the castor oil from the total loss lubrication exited directly from the top of the cyl heads. It was said that the pilots had lovely complexions and very regular bowel movements.

[@larss337]

Allegedly the pilots would get a ration of whiskey to counter the nausea from the caster oil.

[@Boss_Tanaka]

Thanks it s an interesting point

[@MrMarinus18]

That was part of the reason but in a war pilots are expected to just tolerate that. The real reason they went out of fashion was because it was very hard to cool them efficiently above a certain size. Also as pistons got heavier they put more strain on the crankshaft and broken crankshafts became a common failure in the later part of WW1. The reason rotaries became commonly used was because they generated their own airflow to cool themselves so didn't need radiators. That matters when you have very low powered engines where every kg matters.

[@cedriclynch]

Another problem with the rotary engine is the gyroscopic force that it produces, that causes the aircraft to climb if you turn one way and to dive if you turn the other way (and also to turn one way or the other if you intend to climb or dive). Pilots in training had to learn about these effects. When the engine sizes reached about 200hp, the gyroscopic forces became unacceptable and the rotary engine had to be abandoned.

[@monoshock57]

Had Mazda with a Wankel good power but it sucked the gas big time.

[@jacobnorth8642]

Mazda made a rotary mini truck and a coupe, the rx-3 also.

[@shadowopsairman1583]

Burned oil and was inefficient/smoggy, mazda dropped it.

[@johnsheetz6639]

They're kind of like the two strokes of automobile engines lol

[@paklekj4429]

@@johnsheetz6639 the rotary could have used the bloat? Exhaust used on many 2 stroke performance motorcycle

[@maxpower001]

Yeah ive had 5 rx7s in my day and yes, smooth as hell, good power band but dont think just because its only 1.3l or 62ci X 2 as listed under the bonet that your fuel efficient because there as thirsty as a bbc believe me.. your doin good if u can get 15mpgs.. i wish i still had em now a days cause there worth a fortune now

[@keko4618]

Thank you about rotary engine explaining. I have heard about them, but now i finally had some real information.

[@rev.waynet.oleary7387]

Excellent presentation, interesting and easy to follow. Thank you!

[@tankertom3243]

The production F8F was powered by the Pratt and Whitney R-2800. Otherwise a very good video. I will always have a lot of admiration for the pilots that climbed into a wooden framed, fabric covered aircraft held together with wire and powered by a spinning piece of metal spewing castor oil.

[@johnsheetz6639]

You just answered a question I had for a very long time about the rotary engine crankshaft I was wondering how they would all fit in the same line thank you!!🙏

[@jesvans]

those rotary engines are crazy

[@franklynpertuz7669]

That was very very good and well put well said interesting thanks for sharing

[@JulieanGalak]

The factory-produced Cessna Cardinal never used a Wankel engine. It used either an O-360 (on the fixed gear version) or an IO-360 (for the retractable gear version) Lycoming engine. Both are flat (opposed) 4-cylinder engines. It's possible someone put a Wankel onto a Cardinal as a one-off experiment, but it was never sold with one.

[@sandervanderkammen9230]

Excellent comment, no Wankel engine has ever been reliable enough to pass the PFTR reliability standards for FAA or EASA airworthiness certification. No type rated passenger aircraft has ever been sold with a Wankel engine.

[@sandervanderkammen9230]

Lycoming licensed a Wankel engine from Curtiss-Wright... Textron who owned both Lycoming and Cessna developed a Wankel powered prototype aircraft based on the Cardinal. The program was cancelled because of reliability problems.

[@paulburney7250]

You should include the "Liquid Piston" engine type. It is NOT a Wankel, and is being used by the American Military as a backup auxiliary power supply for artillery units.

[@sandervanderkammen9230]

Beware! LiquidPiston is a fruadulent investment scam

[@fabbri4497]

It is a derivative of the Wankel with a reversal of roles between the rotor and the trochoid.

[@jayreiter268]

What is always left out of these explanations of radial engines is the cam ring. Understanding the cam ring geometry shows the reason why there is an odd number of cylinders in each engine row. Hint a three cylinder will run with a single lobe ring (one lobe on the intake and exhaust ring) turning opposite to engine rotation at half speed. It will also run with a two lobe ring turning the same as engine rotation at quarter speed. Say the intake lobe is starting to open #1 intake valve. Rotate the engine 240 degrees the #3 piston is now in about the same position to open the intake valve as #1 was. The cam lobe has rotated 120 degrees and is there to open #3 intake valve. Do not feel bad if it does not click right away Took a couple of hours with a compass and protractor for me to see the light. I passed the A&P written in 1970 and that question was not on the test.

[@alfavulcan4518]

Had the same thing explained to me by an old retired aviation mechanic about the odd number of cylinders and cam timing at a military museum many years ago.I’m a car junkie so that was fascinating how a radial worked. Information I will never need but am very happy to have learned

[@luislima4053]

Thank you for this important information about engines...

[@nickayivor8432]

KNOWLEDGEABLE The Engineering Post Thanks 👍 From Nick Ayivor from London England UK 🇬🇧

[@ericvandomselaar8420]

I think wonderful engines.

[@pauljanssen7594]

I used to work on the early monster rotary engines rx2 rx3 and then the rx4 basically RPM good power but the way the combustion Chambers design and the way the engine design it's a great gas ⛽ guzzler basically it was a fun car to drive. We used to make our own custom plug wires that can hold up to the high RPM better cost to customers too I used to tune three four sometimes five of them a day. And that's with making a custom wires set. Belgium at that time had the best plug wires you can buy bulk wire.

[@biasabiasaaje4262]

Can you explain how the rotary boxer engine works and also the one cylinder rotary engine? minutes 14:57 Also the example of the vehicle that use it and also for the Rotary engine vehicle example like cars and other vehicle instead of motorcycle

[@rescue270]

A Wankel should be called a rotor engine, not a rotary engine. Rotor engine. Piston engine. All rotary piston engines are a type of radial engine. All rotaries are radials, but not all radials are rotaries. In fact, the radial cylinder arrangement was first developed as a rotating engine to be built into the wheels of early motorcycles, with the fixed crankshaft acting as the axle. The first fixed radials were developed by converting rotary engines to be stationary and their cranks turning. The Manly-Balzer engine used in the Langley Aerodrome is a good example of this.

[@Mark-sj7lv]

The radial engine was no doubt way ahead of their time but not very aerodynamic. The 12 cylinder R 12:22 olls-Royce Merlin was by far the best engine of WWII. Not only for fighter aircraft, but bombers too. The best for dependable horse power, torque and fuel consumption. The P-51 Mustang would not have been the greatest piston powered fighter without the Merlin. Could not see the Mustang with any other engine and flying escort for Bomber Command over Berlin. Even Reich Marshall Goring said he knew the war was lost when he saw fighters over Berlin escorting the bombers. The Avero Lancaster (designed and built in Canada 🇨🇦) was powered by the Merlin. Which was only the GOAT because of the Merlin. God bless us all ring

[@alanhynd7886]

Have a look at the Deltik engine used in the UK in boats and trains. It's very singular,

[@sandervanderkammen9230]

Napier licensed the Deltec (Gegenkolbenmotor type) from Junkers Jumo in Germany.

[@alvinmitchell6799]

The old school Harley Davidson V-twin is actually a radial twin engine.

[@cars__modifiedpk]

Thanks brother i am waiting for to see a different video

[@pootisbirbgaming4183]

Damm they used a Warthunder screenshot for the M3 Lee

[@markthomasson5077]

Surprised that no one ever built a two stroke rotary engine

[@davidelliott5843]

What about the (silly name) Liquid Piston. It swaps the wankel rotor and stator shapes. It has a high blow-down ratio so it’s quiet and very efficient. You can also have a two stroke radial it has four cylinders all connected to one crank pin. Or eight with two crank pins.

[@sandervanderkammen9230]

Beware LiquidPiston is a fruadulent investment scam

[@rexdenemo5235]

Hi Folks, You are missing the 'Revolver Cylinder Engine, it's reciprocaL corollary, dubbed the 'One Stoke Engine', and the Wankel LIKE RECIPROCAL DISPLACEMENT OFFSET ROTARY ENGINE. All which perform as well as these do.

[@juliushummer1069]

Very good! TY

[@arshanmashrootechi7103]

That was nice. But I didn't get how rotary engine rotates the main shaft. It seems to me like the spade rotates around gears freely and it is not connected to main shaft at all. Any explains ?

[@Giuliana-w1f]

The main shaft is fixed and the whole engine rotates arround it

[@quinnobi42]

The rotor is mounted on an eccentric shaft, which is basically a round shaft that connects to another shaft off-center, so when the crankshaft rotates, the off-center part of the shaft moves around it. It's a bit hard to explain in words. If you google 'eccentric shaft' you'll get some images that should explain this better than me. The rotor fits onto the eccentric part of this shaft, so when the shaft rotates, it moves the rotor side to side in the housing. This works in tandem with the gear on the back of the rotor which meshes with the smaller gear that is fixed to the housing, so that the rotor moves as we want it to. The end result is actually a 1:3 ratio between the crankshaft and the rotor, so the rotor completes 3 full revolutions for every one of the crankshaft. You can sort of see how this works with little model wankel engines. Here's a video that shows the disassembly of one that has a good bit where he turns the eccentric shaft by hand and you can see how the rotor moves kzbin.info/www/bejne/fKiqfaGOrJuSrLM

[@FordGTmaniac]

@@Giuliana-w1f What I want to know is how on Earth the fuel system on those engines worked. I've tried imagining it without having to look it up, but plumbing fuel to an engine where the whole block is spinning just sounds impossible without specialized fittings and seals that probably don't exist anymore.

[@byteme11]

@@FordGTmaniac And people were smart enough to perfect this motor during World War 1. The only reason they went from rotaries to radials was the gyroscopic effect of the spinning engine. Just imagine what that would have been like on something the size of those bomber engines!

[@fabbri4497]

The Wankel engine declares as displacement the volume of a single chamber out of the three delimited by the rotor. This may suggest a high specific power, but this is false. Its thermodynamic efficiency is also very poor as evidenced by the heat of its exhaust and its consumption. One face of the rotor returns to its initial position in the cycle with each revolution. So it's a 2-stroke engine. (2 turns for a 4 stroke). The 4 phases are present in all heat engines. This engine is in all respects comparable to a 3-cylinder 2-stroke, to which a multiplier by 3 would have been added at the crankshaft outlet. Which wouldn't have changed either its displacement or its combustion cycle, right? As for reliability, it is dismal with a complete overhaul of the 3.9L engine of the Mazda RX8 every 80,000km to compare with the indestructible Honda s2000 2L.

[@princekgosi6067]

As I Hit The Button of Like and of Subscribe!!! Awesome stuff...😮🎉❤

[@paparoysworkshop]

I need to build a car with 4 rotary engines as the wheels. Then I would drive it to a gas station and ask them to check the oil, and sit back and laugh as they look everywhere but can't find the engine. I don't know how I come up with this stuff... I really need a life. 😀

[@mechguy8459]

Good explanation on rotary and radial engines

[@sandervanderkammen9230]

Not bad but there are some glaring errors

[@MrMarinus18]

14:00 Strange that you didn't mention the Pratt&Whitney double wasp which is the most powerful engine of WW2 and powered several famous planes. It was a 48 cylinder stacked monstrocity that they somehow got to work reliably.

[@1zsn303]

*18 cylinder.

[@cosmiclkgamer5498]

Nice so helpful

[@mozilla2576]

Amazing!!

[@nunuchemicals4031]

Who's love TWO STROKE😍😍

[@neilbmarquez211]

amazing engines.

[@oliviersarian6664]

The question is: how works the lubrication on this motors ?

[@sandervanderkammen9230]

Radial engines are dry-sump (recirculating) Rotary engine is oil injection, total loss lubrication Wankel engines can be oil injection or premix, or wet sump with partial oil injection (Partial loss, partial recirculation)

[@Dreamer3K]

Closed system Working surface boundary. for rotors and pistons.

[@markmoses7300]

It's like Bic lighter ones the bushing goes bad on the rotor u got a boat anchor ⚓️

[@t161sprawotsi3]

One of the breakthroughs in wenkel engine technology besides the crankshaft system in the combustion process, how about lower maintenance costs ?!? Thanks for share GOOD - JOB 👍👍👍

[@sandervanderkammen9230]

Wankel engines are inherently unreliable and less durable than reciprocating engines. They have lower maintenance costs but higher production costs, higher failure rates and much shorter service life. They are so unreliable that it cannot be used in type rated passenger aircraft.

[@sandervanderkammen9230]

The Wankel engine effectively obsolete technology because it cannot be adapted to use a modern high swirl or quench type combustion chamber to increase efficiency and lower emissions

[@Dreamer3K]

Star arraigned pistons rotating block, vs stationary block

[@mothmagic1]

The Wankel engine has one fault. Fuel consumption/power output. A wankel engine with a nominal 2 litre displacement has a fuel consumption closer to a 3 litre for the power of a 1.6-1.8

[@ryna9053]

❤សួស្តី

[@Simon_r2600]

13:17 Actually, the fastest piston powered plane is the Dornier Do-335. The F8F is only the fastest piston powerd plane if you consider the Racing converted F8F

[@cbremer83]

A racing F8F is still piston powered and still the fastest. So, your comment is a bit pointless.

[@thevortex6754]

The Do-335 is quite interesting, two big V12s (I forget the maker, Daimler-Benz???) but they weren’t even super charged like most aero-engines of the day. Just good stock horsepower and great late war aerodynamics proved it to be a fast plane. But didn’t get to make any sort of real change thankfully lol

[@captainaxle438]

@@cbremer83 hey dummy the dornier was the fastest one during World War II the f8 was after the war, that is the distinction

[@captainaxle438]

You are correct but the distinction is during World War II and after and the dornier was the fastest during World War II the f8 was post war

[@nightshade4873]

The distinction is that the Do-335 is fastest *in* WW2, not after the F8F "Rare Bear" is still the fastest piston powered plane

[@aj_monte8694]

nice

[@VedadSmjecanin]

Nice🎉🎉🎉

[@ravindupethum967]

Good vedio bro

[@dashnyamthelova9994]

cool!

[@mxr572]

what about Achates engine? opposing 2 pistons in one cylinder.

[@mateuspiresytD60]

the 2105 lada and other ladas rarely used the wankel

[@palashchoudhury5565]

2 Cylinder in Bike & 6 Cylinder in Car Rotary Engine in Sport Car

[@chrisgabbert658]

🤔 the most fuel efficient engines in cars, motorcycle.

[@sandervanderkammen9230]

Most fuel efficient engines are Diesel engines.

[@davajjsaleh3305]

اینها که خیلی قدیمی و پیش پا افتاده هستن شاید کسی باور نکنه ولی من خودم بنده به شخصه جندین اختراع کردم ولی از اونجایی که نمیدونم چطوری مطرحش بکنم همینجوری سربسته میمانه و حیف میشن من خودم یه سیستمی را اختراع کردم البته طراحی کردم که روتوری و پیستونی دیگه قدیمی شده ۲نوع دیگه طراحی دارم که هیچکسی تا حالا ندیده و نشنیده منم نمیتونم به بقیه نشون بدم همینجوری استعدادهام میسوزه و حیف میشه❤❤❤

[@shoutitallloud]

It's not quite clear how rotor and output shaft are linked in Wankel. How does rotor motion becomes shaft rotation?

[@sandervanderkammen9230]

In the DKM54 the engine output shaft is connected to the spinning combustion housing. In the KKM57 the triangular piston aka rotor rotates the crankshaft by applying pressure to the eccentric lobe on the shaft

[@nevillecreativitymentor]

Is there a Diesel Wankel? or a Diesel Rotary Engine?

[@sandervanderkammen9230]

No, Many attempts at producing a Diesel Cycle Wankel were made. The Wankel cannot support a high enough static compression ratios to achieve reliable compression ignition and the apex seals are too fragile and weak to handle the higher temperatures and pressure. I'm not aware of any attempt to build a Diesel Rotary type engine, they fell out of favor in the 1930's about the time the first Diesel aircraft engines apprared.

[@sjsz06]

They forgot to mention the Mazda RX3. I had one.

[@payman.amini1]

Nice video but why the sound is stuttering?

[@vitalic_drms]

anglos love the wanker engine

[@MohammedKhaled-bt2zi]

Radial piston engine can reach up to 42 cylinders

[@payman.amini1]

Where is the very famous Mazda 787B?

[@renandavidsoriaahumada6093]

2 piston per combustion chamber ON a Radial?

[@renandavidsoriaahumada6093]

15:44 i want one of that its looks SteamPunk asFack

[@envitech02]

Good video and animation. I like the rotary piston engine but what I don't understand is if the entire cylinder block rotates, how is fuel and voltage delivered the the cylinder? Wouldn't the fuel lines spark plugs cables wrap around the cylinder block as the block turns?

[@Giuliana-w1f]

There are ways to make a fuel line that rotates. And you don't need constant power for the sparkplugs, so you could use the rotation of the engine itself like a distributor (one useless spark during the exhaust and another to ignite the mixture)

[@Simon_r2600]

Well, the spark travels a small distance trough the air to contacts, and the air-fuel mix gets either trough the crankcase or trough a seperate channel. Fun fact: There are rotary engines with only one valve per cylinder. Well, the second one (inlet valve) is inside the piston and is pressure activated, but you only have one poppet vavle per cylinder

[@mattn5594]

They typically used seals through the inside of the crankshaft to supply electric and fuel, kind of like a reversed oil supply in newer cars

[@kimpurcell8851]

The crankshaft is hollow and the fuel/air/oil mixture is sucked into the crankcase. From the crankcase the fuel then gets sucked up induction tubes to the head. Even though the engine is four stroke the oil system is total loss like a two stroke. Spark comes from a ring mounted to the crankshaft with corresponding points of contact on the spinning crankcase.

[@sandervanderkammen9230]

@@kimpurcell8851 Excellent explaination, could not have said it any better.

[@adambeaudoin8818]

When a radial engine is used on a tank how doesn’t it overheat? Are they just air-cooled?

[@sandervanderkammen9230]

Big cooling fan.

[@espacesX]

NSU Ro 80 an Icon was overseen...

[@Fang-sigma2mz]

Sigma MC74 is driven only by Sigma's 🍷🗿

[@sirswerve2493]

You didn't mention the Mazda 787B race car. Its like the holly grail of rotary race cars...........

[@sandervanderkammen9230]

Mazda's foray into endurance racing was ultimately a failure

[@leegoddard2618]

What about the Rotax, pretty sure it is still in use.

[@sandervanderkammen9230]

Rotax makes horizontally opposed engines

[@espacesX]

Van Veen motorcycle with Wankel Rotary engine ...

[@hg60justice]

now the liquid piston rotary. which is a lot better than the wankel.

[@sandervanderkammen9230]

Beware LiquidPiston is a fruadulent investment scam

[@NCOGNTO]

Just filed my patent for a true rotary and Pollution Free Engine. It "rotates" about its axis and "emits" Oxygen

[@leneanderthalien]

send it to Mars for terraforming...

[@timehunter9467]

I feel like showing this to everyone that calls a Wankel Engine a Rotary engine, it boils my blood.

[@hoodbaxter]

How dose the rotary engine intake fuel

[@kimpurcell8851]

Crankshaft is hollow. Air and castor oil are sucked into the crankcase and from there is sucked up through induction tubes to the head. Oil system is total loss. Spark is provided by a ring with a contact point. They are 4 stroke but share a lot of attributes with a two stroke. Some of them didn't have a typical throttle. You governed engine speed by magneto select usually selecting between 3,6,or all 9 cylinders firing. There was also a "blip" switch on the flight stick that you could cut the spark off and on with for extra rpm refinement.

[@georgeday5901]

Is it not a 2t motor

[@sandervanderkammen9230]

They are all 4-stroke engines

[@johnkoster462]

There is one other motorcycle whit a wankel engine: the van Veen

[@flyerphil7708]

The Wankel has a rotor, it’s not a rotary engine.

[@stevehuffman7453]

The Wankel/Mazda is a "rotary" engine. It uses a rotor instead of pistons. The radial and what you call a "rotary" engine are both a piston engine. Both are actually a radial engine, in fact. The thing you call a "rotary" engine is an early radial engine, used in some pre-World War 1 aircraft and World War 1 aircraft. It fell out of favor post WW1 because it hampered the maneuverability of the aircraft, acting like a very efficient gyroscope, thanks to the heavy crank case, cylinders and heads rotating at high speed. The "crankshaft", rods and pistons were stationary. Later rotary engines had a rotating crankshaft and reciprocating rods and pistons, eliminating the gyroscopic effect of the engine. The Mazda Wankel rotary engine being a "gas guzzler" is an understatement. They were also difficult to tune and keep running properly. The three seals on the rotor tips also wore out quickly.. All three of these engines are obsolete. With the possible exception of the Mazda/Wankel none are used in cars (Does Mazda still make an RX rotary powered car?) or new aircraft. Around 2005-2007 I saw someone had a startup or "Go Fund Me" attempting to pass off a scaled down old pre-World War 1 tech "rotary" radial engine as "new tech" to power a line of garden tractors. As far as I know, that company went bust ... no advantage over a Brigs & Stratton piston engine, and a boatload of disadvantages. None of these three engines are very fuel efficient, to be honest. Why do you think the base line Cessna high wing and other small private piston engine aircraft (including crop dusters) DON'T use a 2; 4; or 6 cylinder "boxer" engine, and not a radial engine? I don't know what the point of this comparison is. With the possible exception of the Mazda Wankel rotary engine, all three are out of commercial production. The "rotary" radial engine since the early/mid 1920's. The rotary since the 1960's. Emission Control laws likely killed off the Mazda Wankel rotary somewhere along the line.

[@kimpurcell8851]

The rotary aircraft engine IS a rotary engine. What does rotary mean? It means to rotate, to spin. The entire engine spins around the crankshaft of a rotary. Rotary engine=spinning engine. They were even patented under the name "rotary engine". Mazda just called the Wankel a "rotary" because license on the Wankel name expired and Mazda didn't want to pay royalties. Rotary is just a name they basically drew out of a hat. The definitive answer is to ask yourself which ENGINE itself spins.

[@sandervanderkammen9230]

*You are very ignorant and confused.* *Please educate yourself before posting misinformation regarding a topic you clearly are not qualified to speak inteligently about.*

[@m.s8879]

Wankel rotary engine are the worst engine's in automotive industry. There are tons of defects and that engine will suck your gasoline as well as your wallet.

[@tharii314]

Robot voice😕

[@DjokosurjadiSetiawan]

My name is DJOKOSS NO. 1 IN WANTED. NO. 2 RAZOR. 2022. CEVROLET.

[@Cetrifuga1945]

Perche come potrebbe essere tondo tutto forse dsfalsato

[@Team-fabulous]

Wankle engines are commonly known as rotary engines and the Rotary engines you refer to is known as radial

[@rustyneedles3743]

why do people always get this wrong, the "W" in Wankel is pronounced with a "V" ... ie: Vankel ... like, get it right idiots, ffs

[@scottcarns5156]

Coolbeens

[@planje4740]

- вентили се морају макети то је слаба тачка на постојећим моторима - кочница свега ма што има у мотору _ а радилица сама је полуга генератор снаге

[@rossdubois2959]

Only Wankel no the hydrogen gas ⛽️

[@sandervanderkammen9230]

Wankel engines are too inefficient for hydrogen

[@dickb2128]

The narrative is awful. A couple of words were mispronounced. The operation of the Wankel engine was very good, the other two not so good, And it is not pronounced Wankel, it is Vahn kel. Good try but no cigar.

[@theconfederacyofindependen7268]

Reality of it is just hideous, it uses more oil and a radial engine on the other wing (no pun intended) is cheaper to build and maintain

[@meceneli6452]

Shih...funk u ..rotoru rngune not funk wankel creacture..is i do it at my 15 age...1975

[@sandervanderkammen9230]

*Only the Wankel DKM54 is a Rotary type engine.* *The Wankel KKM57 has a conventional fixed crankcase and spinning crankshaft.* *The DKM54 has a rotor.* *The KKM57 does not have a rotor*

[@godfreypoon5148]

Still putting your commends in bold, I see.

[@WarblesOnALot]

G'day, Actually, the FIRST Rotary Engine was designed and built by Lawrance Hargraves, at Stanwell Park, NSW, Australia, in the 1880s ; it was a 3-cylinder unit, running on Compressed-Air...(!), with the Cylinders mounted at the Hub of a 3-bladed Propeller, each Cylinder attached to a Blade's Leading-Edge Spar... Hargraves was comparing Propellers with Ornithopters, propelling large Models, before he began experimenting with Kites ; and comparing the Lift-generating ability of Flat-Plane Surfaces versus that of Curved Aerofoils... Sadly, Hargraves' Propeller was so very badly designed that it was horribly inefficient, and thus he led himself to wrongly conclude that Flapping Wings were slightly more efficient than Propellers, as a means of Aerial propulsion.. But, yeah, to see photos of his work..., please feel free to backtrack me to my "Personal Aeroplanology..." Playlist, thererein to find and check out, "The Aeronautical Works of Lawrance Hargraves..." A pair of Videos, made by reading a Booklet of the same title, by the Sydney Technological Museum, to camera ; it was published in about 1932..., I acquired it in 1970 - so it's probably a bit of a rarity... Also, currently, it appears that Wankel Rotary Engines, running on Compressed-Air..., are proving to be highly successful in Ukraine, powering Drones and Unmanned Aerial Vehicles...; Small, Light, Powerful, Smooth, with No Infrared Signature....(!). So Felix the Nazi Wanker's Fuel-farting Fire-Breathing Tri-Lobed Vane-Pump running backwards...; has finally turned out to have a (literal) Killer-Application, at which it outperforms all rival competing technologies. A bit of a pity that all it's good for is powering Kamikaze Suicide-Drones...; but what else does one expect : from Nazi Science applied to Engine Technology ? Such is life, Have a good one... Stay safe. ;-p Ciao !

[@sandervanderkammen9230]

The Rotary type engine was invented by Felix Millet in France. This is an irrefutable fact that cannot be disputed

[@davajjsaleh3305]

اینها که خیلی قدیمی و پیش پا افتاده هستن شاید کسی باور نکنه ولی من خودم بنده به شخصه جندین اختراع کردم ولی از اونجایی که نمیدونم چطوری مطرحش بکنم همینجوری سربسته میمانه و حیف میشن من خودم یه سیستمی را اختراع کردم البته طراحی کردم که روتوری و پیستونی دیگه قدیمی شده ۲نوع دیگه طراحی دارم که هیچکسی تا حالا ندیده و نشنیده منم نمیتونم به بقیه نشون بدم همینجوری استعدادهام میسوزه و حیف میشه❤❤❤