Jet Engine Thrust Test - Fuel Experiment (Jet-A vs Diesel vs BioDiesel vs HydroDiesel)

[@JASantiago5]

As an engineer (BSEE) I enjoyed not only the experiment with different fuels, but the science and the mechanics behind constructing that engine. Well done!

[@TurboBMRProjectLove]

what kind of engineer? have you looked into metamaterials and how they can interact with gravity waves?

[@موجاايدير]

هل هاذا المحرك يمكنه الطيران

[@ImpendingJoker]

As an helicopter mechanic for 23 years, I can tell you this test went exactly as I thought it would. Each of the fuels has its own specific gravity, and unless the metering jets are adjusted to compensate for this you'll get weaker power due to incomplete fuel burn. The reason that the hydro diesel did better than the other two is due to physics. The water in the fuel cools the air as it is injected, this increases the aircharge in the combustion section much like nitrous does in a car. Older turbojet engines actually used a water injection on take-off(though it was injected into the compressor section not the combustion section) to increase the performance of the engine. The AV-8B Harrier still uses this today, to boost engine power when in a hover. Jet-A is a very dry fuel, and is anhydrous, and soaks up water like a sponge. This is the reason why a lot of airplanes will put an additive known as colloquially as Prist, though many manufactures make it now, that lowers the freezing point of the water suspended in the fuel to prevent ice build up on the fuel filter screens. So, that pretty much means, hydro-fuel will more than likely not be coming to an airline near you any time soon.

[@MrKnutriis]

Great explanation.

[@Av.Martin]

Wow

[@ark-mark1]

Germans used water methanol injection to ad more boost without the fuel igniting from pressure. It allso cooled the pistons. Would be nice to see if it worked on a jet. Alcohol prevents the water from freezing allso tho they propably have tried it in jet engines minding the hydro diesel. In carage it could work coz you don't have to be worried about icing.

[@MrKnutriis]

@@ark-mark1 If you google it you'll learn that it has been used in jets many times.

[@alaric_3015]

the USAF and McDonnell Douglas experimented with F-4 engines with water injection too, during the Israeli-Arab war to counter the Egyptian MIG-25, they decided to not give the result to the Israelis though because it is considered too advanced

[@wedding_photography]

The neighbors love him.

[@androiduberalles]

If I was his neighbor, I'd be standing there listening to that thing. It was sweet!

[@mouadlahrizi6109]

I can hear your tests from here lol

[@replynotificationsdisabled]

Drink drink drink drink

[@anujdixit7717]

Yes we

[@mirmula]

neighbors: why are planes constantly flying over our house today??

[@TrentFalkenrath]

That was extremely interesting, as I knew a jet engine can run on almost any kind of fuel, but I didn't know how effective alternative fuels are. Awesome stuff.

[@Dailymailnewz]

How then does the white sort of smoke comes out of the jet engine in the sky, what kind of fuel do they use??

[@xJackkHD]

​@@DailymailnewzContrails (the white lines) form when the warm moist exhaust fumes from an aircraft mixes with the cold ambient air producing ice crystal clouds.

[@SubvertTheState]

​@@xJackkHD Coupled with some kind of other condition. Like ice crystal nucleation sites. Dust, unburnt exhaust, a particular altitude which has the perfect conditions for turning water vapor into either liquid or ice.

[@Plumstone506]

Jet engines are a masterpiece of engineers work.

[@tima.478]

Being a commercial jet engine mechanic, i fully support this message!

[@carbomax-gamingonphone9446]

It was so Expensive

[@Grombrindal91]

Wait till you look into rocket engines...mind blown

[@foxaviator2493]

And you can thank the…. The uh.. it’s not important who invented it…

[@paulweston8184]

@@Grombrindal91 Being a privately funded rocket scientist associate, I fully support this message.

[@awittypilot8961]

Ok...I'm an aviation mechanic and a CJ-3 pilot. I have to say this blew me away. Almost all turbine engines are certified for different fuels including gasoline for a limited amount of time. I've run 100LL in pratt engines with zero problems (limited to 150 hours with pure gas). The Williams Air Research engine on the CJ are NOT certified for operation with gasoline. This test shocked me. It must be a viscosity issue. Jet A produced the most inter turbine temp and highest RPM as well as the most thrust. Williams engines don't have nozzles or injectors, they have a "slinger" and are operated by FADEC (full authority digital engine control). I don't think you could have put on a more pertinent test. It literally changed my mind about several things. Thank you very very much!!! By the way, lubrication from the fuel has no particular benefit for the engine. The only place it could make any difference is the fuel controller itself. Prist is an additive that keeps the fuel from freezing and will prevent microbials from growing. But it is corrosive and has to be used sparingly. Most engines are restricted to .015% or 1.5 gallons in 1000 gallons of fuel. If your fuel isn't heated by bleed air or other you WILL be using prist or your fuel will gel and may flame out....ask a guy that has experienced...oh...that's right...it was ME! 29,000' in a Pilatus PC-12 the fuelers didn't add prist. It didn't fully flame out but it DID become a glider real quick! I had to dead stick into DAL from FL290. DID find out how well a PC-12 glides! hehe

[@p.inspiratesuckstiadakmalu7534]

U talk like u know everything😂

[@awittypilot8961]

@@p.inspiratesuckstiadakmalu7534 Appears like I know more than you

[@nmatavka]

@@p.inspiratesuckstiadakmalu7534 Considering he is literally a MECHANIC for this type of engine... he actually DOES know everything, it's called being an expert.

[@jackl.1759]

The neighbors: Hmmm, I don't remember buying a house next to the airport.

[@BillAnt]

"It's not an airport honey, but your Warped Perception !" xD

[@yokycaesarjohnimuchtar6126]

i believe i was naked and using drugs that day

[@sergiofacchinetti2954]

@@yokycaesarjohnimuchtar6126 your comment makes no sense so I think you still are naked and using drugs

[@johnchisholm7350]

After 81 years on this earth I,m rejuvenated. Brilliant engineering. John from Oz

[@naturecallakbar1080]

Your garage have more tools than my university

[@marleshpatil8517]

😂

[@humss-rquellansean1239]

LoL HAHAHAHAHAHAHAHA😂

[@goldenheart1667]

Hhhhhhh

[@hcb5541]

😀😀

[@piwyasdhaka45]

Right 👍

[@animalpeeps]

Wow... what a marvel of engineering. I'm imagining the forces everything must be under and it's just mindblowing. And to think this is so tiny compared to one from a plane! Truly appreciate this video!

[@daghanabi]

I couldnt agree more

[@francocastilloAR]

What is this engine for?

[@AnnicK.Zoloft]

​@@francocastilloARrc planes would be the main application but people have been slapping those on pretty much anything

[@vomitkermit3446]

Idle is 35,000 rpm. The precision engineering these parts must require is unreal.

[@ctrang0458]

Indeed. And remember this is a larger one. A t35 kolibri for example idles at 80k rpm or so and maxes out at 260k.

[@Christian.987]

What rpm mean? Is speed or pressure

[@yallawallahalla]

@@Christian.987 revolutions per minute.

[@wattson451]

@@Christian.987 it’s how fast the turbine spins. To put into perspective, a car RPM at idle around 1000 to 2000, this jet engine is around 35000

[@cyeknox1322]

Can I strap 4 of these engines to my arms like a jet pack if so where can I purchase?

[@jamesberdine8574]

Great video. As a 45 year A and P. It was interesting to see the different fuels. As a side note the best was to pour out of a 5 gallon drum is lay it on a bench with the bung on top, then slowly roll it. It is then easy to control the flow..

[@ProjectFarm]

Absolutely amazing testing! A+++ dyno build and really enjoyed the RC jet engine testing!! Looking forward to your next episode! I'm planning to test the lubricity of the 4 fuels soon.

[@Taydrum]

I'm calling it now, biodiesel has the best lubrication, Diesel second, hydrodiesel third, and jet-a last.

[@CathodeRayNipplez]

Look fwd to that!

[@lukehill6395]

@@Taydrum i agree that i think jet fuel is last, but i'm unsure about the various diesels. i would put hydrodiesel higher.

[@JesusisJesus]

Can I subscribe 5 times? Just builds a jet engine dyno when he needs one..... I fkn love this channel. This dude does the most fascinating stuff that I only dream about doing, but just as I say “but what about....” he’s done it and shows you. If he was my science teacher I would have been having lunch with him.

[@collinmac24]

PF in the houzeee

[@HELERsx]

I dont know why but I am so in love with jet engines. This spooling, this massive amount of power...just amazing!

[@xyphur]

Just a quick tip related to your waterjet: To prevent erosion damage to the nozzle/orifice head, make a sacrificial hard rubber washer about 3/8" thick that tightly fits over the nozzle so that during pierce operations the high pressure splashback spray of water and garnet doesn't damage the machine over time. I used to work as a waterjet operator on Flow machines running 94ksi intensifier pumps in an industrial production setting, and without the washer there, the orifice head would be toast after a day or two of nested parts... Protect those expensive parts! :)

[@hhhhhhhhh1071]

A sacrifice to the machine spirit must be made

[@Gharcian]

Lemme give you my summary of Fuel Experiment: picture - 100 sound and music - 100 topic - 100 conciseness - 100 Overwhelming!

[@brsrc759]

Man you bastard🤣🤣🤣! I'm supposed to be working right now, but this is too exciting not to watch... immediately. Hiding in the broom closet at work watching with headphones. That thrust dyno is fucking rad bro!

[@WarpedYT]

Haha! ❤️ Thanks I really appreciate it! I'm mostly tried out the hydro diesel because my RC guys are looking for a cheaper fuel than kerosene.

[@brsrc759]

@@WarpedYT Looks like a great solution. It seemed to work just fine and at 20% water I'm sure it's 20% cheaper lol

[@johnpossum556]

@@WarpedYT You can buy k1 cheaply at some gas stations. They make you fill out some forms to get it tax-free for home heating.

[@WarpedYT]

@@brsrc759 so the hydro diesel is about $1.80 a gallon, versus like $3.20 a gallon for kerosene here in Illinois. I had a hard time editing this video for multiple reasons but I forgot to put a part in there where I talk about fuel mapping in the ECU for the jet, I believe that if you can remap the ECU slightly to allow you to get 10% more hydro diesel through that injector it would make as much as jet fuel at a cheaper price. The one thing about the hydro diesel that I like is that it burns very clean, it doesn't have that kerosene smell.

[@brsrc759]

@@WarpedYT that's crazy cool!

[@pilotlars]

Very nice. the reaction of the engine to the different fuels was fascinating. The amount of flames and smoke after throttling down especially. As a driver of ultra-low-sulfur diesel vehicles I know that they have extra lubrication additives to counter the lack of sulfur.

[@tinseldegree6968]

The jet engine: Starts to sound loud The subtitles: [Music]

[@diablo12039]

ah yes, music to my ears

[@emmanueltiriagarzon4595]

For avgeeks, yes!

[@genioversity4955]

Exactly

[@BillAnt]

The subtitle changes into "Put on your ear muffs, it's gonna get better... well, insane!!" xD

[@BudgiePanic]

Her: so what kind of music do you like? me: It's complicated

[@davidbrotherson933]

You Sir are an absolute genius!! I cannot believe the engineering skill and knowledge on display in these videos..I've never seen anything so brilliant!

[@asharma367]

Damn! Never know till now that Jet engine is so versatile in terms of type of fuel and burning. It's quite independent. It's appears that it can run on almost any flammable liquid.

[@haody3494]

The M1 Abrams tank uses a jet engine, it can run on any type of fuel. So no surprise for me

[@Person01234]

Kinda, but Jet is very similar to Diesel anyway. The military uses a single kerosine fuel for both jet engines and diesel vehicles (JP-8) to simplify logistics. I think it has an additive to give it lubricating properties like diesel.

[@benjaminmenken5693]

@@haody3494 it probably uses a turbine which is similar to a jet, except it doesn't use its exhaust as thrust. And instead uses the exhaust from ignition to drive a shaft

[@haody3494]

@@Person01234 JP-8 can cause hearing problems.

[@NvTwist]

A tip: the majority of wear that turbines experience doesn’t occur during startup or when at 100% power... its during the shutdown and resulting cool down at zero rpm. Run a blower thru it to keep the rotor spinning (not high rpm enough to keep it moving) until temps are reduced.

[@lordred7462]

it"s partially true. Most of wear is during startup when RPM's are low so air velocity is also low and when fuel gets burned flames can actually touch turbine blades and burn them.

[@darikmatters8866]

The fuels have different viscosities and shear strengths... You needed to monitor pressure and flow of the fuel at the motor input.. You should have also been monitoring the amp draw of the fuel pump... If you had used a load cell (from a electronic scale) you could have captured actual real time fuel flow, RPM and power output across the entire throttle range (a small data acquisition project for an Arduino or Pi). Oh, and it would have given you throttle response info..

[@WarpedYT]

Nah I'm not interested in that because I was just doing exactly what the guys do at the field they burn out their first fuel fill it up with the second and then they fly, and then they usually say oh wow this one makes so much more power than the other one, but they never know for sure. Most of the jet engines like this do not allow you to adjust the fuel because if you start dumping too much fuel for the size of the engine it gets dangerous. But on another note imagine This. You're flying a private jet and you land in the third world country, they ran out of jet fuel but they have diesel or another fuel available, you need to get out of the country because it's a war zone and you're about to be stuck, do you take the fuel recalculate your flight for the reduced power output, or take apart the engine mess with the fuel pump, pressure injectors etc so you make sure you put out the same amount of power or more, and then start the jet up and fly.. what would you do?

[@niteriderevo9179]

easy/fastest route would be recalcing for the reduced engine power, at least to me

[@absolutepressur]

@@WarpedYT worth making a note somewhere if possible. I was also confused what the goal was in the comparison.

[@bodywerks]

@@niteriderevo9179 The test is invalid. Approved fuel types for swiwin turbine engines do not have different max RPMs. The author didn't set the ECU up properly for the different fuel types. He also put too much oil in the diesel. It only requires 3% oil, not 5%. You can run 5%, but it just exacerbated the poor results in this test. There are different pump limits for different fuels and the pump limit is calibrated after the first start after the Study RC function has been performed, which I assume the author did right before running Jet A, but did not repeat the process between each fuel type change and that kept the pump from providing enough fuel. If he tan the engine at full throttle for a little longer he would have got a "PUMP LIMIT" warning on the GSU.

[@niteriderevo9179]

@@bodywerks uh, what? kind of hard to retune the fadec/ecu/fueljets in the midst of a combat situation to a fuel it's not set for, doing so would take too long, i was only responding to the having to land and not having the preferred fuel available in the midst of a hotzone

[@cmcconn100]

When I was in the navy we ran turbines on DFM with emergency backups on JP5. Our diesel was run through fuel oil purifier and filtration. We saw a difference in power but not to the degree you saw. We also were running turbines the size of what's on a DC-10 so that probably had some affect. They were optimized for DFM.

[@cogitoipsum9627]

The reason diesel produces less thrust is the higher Aromatics content of diesel versus Jet A. The content of Aromatics in Jet fuel ranges from 10% to >20% (by volume) while the diesel fuel contains 25% to 28% Aromatics (25% in USA an European Union). In fact most Jet A fuel has about 15% aromatics content. The "High Heating Value" (HHV) of Jet A is greater than diesel because of the lower Aromatics content and from the resulting better combustion efficiency. Jet A burns at a higher temperature than diesel (which increases turbine combustion efficiency and hence thrust) because the higher aromatics content in diesel fuel requires more (heat being absorbed) or BTUs to ignite and burn. This results in a turbine combustion diesel flame that is 30% longer than the Jet A flame due to the higher aromatics content of diesel fuel. The result of the longer flame (in the turbine combustor) is that the 30% of the heat energy of the diesel fuel is not converted to thrust because the diesel flame extends past the turbine nozzle into and past the hot turbine wheel. In addition the longer diesel flame results in high energy (i.e.high velocity) incompletely burned carbon particles being sand blasted onto the high temperature hot wheel metal with the result being turbine blade erosion (from combination of carbon or soot on the metal of the hot wheel and glowing carbon particles). To burn diesel effectively in a turbine engine designed for Jet A the flame length of the combustion can/chamber needs to be 30% longer to get full combustion to occur prior to the hot gases entering the turbine hot nozzle.

[@WarpedYT]

Funny that you mentioned that because last night one of my engineer friends at BP sent me an entire article on exactly that subject, that is one of the exact reasons they developed jet a in the early days, because even though the energy content is more on paper the aromatics and viscosity change by temperature make a big difference.

[@Alex-nx5wi]

Thats a very interesting answer! I wonder if you could ofset that, at least in part, by preheating the diesel?

[@cogitoipsum9627]

@@WarpedYT I suggest a test comparing the thrust achieved and fuel consumption between the fuels. One test with diesel plus gasoline mix fuels (of several different mixture ratios) and the straight diesel fuel with the TCU setup (i.e. do the "Study RC" on diesel to calibrate the turbine control, etc.) to achieve 100% RPM (on diesel). The results would be interesting to see. The simplest way to get highway diesel to an Aromatics content in the Jet fuel range is to mix non-ethanol gasoline into the diesel. Simply adding a quart of non-ethanol gasoline to one gallon of highway diesel will yield a "synthetic jet fuel" having around 12% Aromatics.

[@ChibunduUmeh]

This is a very excellent explanation

[@Nickael7]

@@Alex-nx5wi To preheat the diesel, the fuel can pass around the jet engine body to "boil" it before reaching the jet engine intake.

[@arunsharma-dx4yn]

What I found really interesting is the record of EGT. Assuming higher temperatures are more damaging and shorten the time between overhaul of any given engine, Bio diesel appears to win hands down even though its power output might not be the greatest.

[@Knort]

Thought the same, then i realized that it frosts, that´s a concern

[@vincem9468]

Wouldn't jet a fuel be the best because what matter is the ratio of degrees per pounds of force. I assume you could just run it at a lower throttle and get a lower temp for the same force.

[@desertfresh3740]

The temperature the fuel burns at would limit the thrust of the engine, as EGT is a limit. If the fuel burns hotter, you have to throttle back to avoid overheating the engine. The engine should never see EGT greater than the limit, and it's up to the operator (and programming) to avoid exceeding the limitations of the engine.

[@Parabueto]

@@Knort In low altitude applications you might get away with it- mainly in power generation. If you put it on an aircraft you're in for a world of hurt. Reduced thrust is bad- you can always reduce power setting on a pure jet fuel without any of the drawbacks. On a helicopter which often has narrow power margins especially in hot weather the reduced power could very easily prove fatal. Then there's the icing risk- you'll need the entire fuel system heated. Not just because of water ice (at these water levels no amount of anti icing inhibitor will save you) but because wax will freeze and precipitate out of the diesel just like water ice, but at higher temperatures potentially. Same issue of clogging filters and the like. Also diesel tends to build soot on the fuel injectors. Not a big issue because the injectors on a turbine are generally huge and it'll take several hours for any real buildup, but it's there and could be a pain if you aren't anticipating it.

[@tienvannetten4514]

Chantage

[@TirenossauroFPS]

man, you're a king. Heavenly content. Man are simple creatures: We see jet engine thrust test, we click it. No questions asked.

[@bernardomartineztari]

Lol, the close captions say "Music" when the turbine is accelerating. Yes, youtube, indeed, lol

[@moiggc]

That was ridiculously interesting. Appreciate all the effort you made with this, especially in capturing the sound.

[@LiamTronix]

The gigantic flask is back!

[@someone-RGM]

What

[@Engineerboy100]

This was just spell bounding, I had a very hard time taking my eyes off the screen for even a moment. Amazing!

[@TungstenCarbideTempe]

And you sir deserve to be on national TV every evening and morning episodes. Give us more!!

[@Gmanndogdeguy]

am I the only one that becomes extremely excited when listening to that turbine spark and spool up? I have no use for it but I want one for the soundtrack alone....

[@georgedubois76]

Very nice setup! Jet fuel is basically Kerosene. Jet fuel has less additives compared to the Diesel or the Hydrodiesel and I think that's why you would get higher RPM IE thrust. Also you higher EGT with the Jet fuel. The water cools the exhaust like water methanol injected into old turbo prop engines. I would like to see the specific gravity of the three and how that relates to thrust. Great video!

[@panjo40]

we are of the same mind set

[@noahEmmanuel-ww9tv]

This is exactly what i needed. As a senior student in Uni, this is my project topic, Alternative fuels especially Bio-fuels. thanks a bunch bro, this gave me an headstart....

[@WarpedYT]

Your welcome

[@rumanda36]

One of the coolest experiments I've ever seen. Huge fan (no pin intended) of turbofan and jet engines since I heard one. Long time ago. Subscribed.

[@michaelz1935]

Great Research Experiment. One Suggestion: "Add the quantity of fuel burned by fuel type to the summary chart." Enjoyed your video. Thank you. Mike

[@geriger1]

Watch this man's simple trick to make flying a jet fighter less expensive! Navy mechanics hate him!

[@jameschupp2230]

Awesome! I was surprised that the Hydro-Diesel did so well !

[@hebrewhooligan5462]

Love how powerful those water jet tables are. It blows the rust off in less than a sec.

[@alanking7331]

That was dirt not rust. The metal was Aluminum, which does not rust, it oxidizes and is white.

[@BixbyConsequence]

That's abrasive grit which is added to the water jet. It's what is actually doing the cutting.

[@BigMacMatt3020]

@@alanking7331 Oxidization is rust.

[@alanking7331]

@@BigMacMatt3020 I know what rust is . My point at that time (8 months ago) was that he was calling the brown water that was coming off the aluminum rusty water. Aluminum "rust" is white. And I have never heard anyone call aluminum oxide as rust.

[@Baptistbowhunter]

I think another thing I think could help with the experiment being more accurate is putting a large fan in front of the jet engine to simulate flight. If I’m not wrong, thats the main source off keeping the engine cool

[@AaronShenghao]

Yes and no, the cooling effects is negleable. Unlike a car engine which is air/water cooled, for a jet engine, the only part really needs cooling is turbine blade. Cooling the compressor maybe beneficial, but it won't make that much a difference. Commercial jet engine (turbofan) is usually cooled with bypass air, which is driven by the big fan in the front of the engine. Their turbine blade is cooled using bleed air from high pressure compressor, not air from the outside. In fact, the only time a plane needs outside air for cooling is to cool compressed bleed air from the engine to cabin. Most tests on commercial engines are done on static test stand without anything blowing in front, unless it's testing for water/hail ingestion where water or hail is sprayed in front. They will fly test the engine, to verify the numbers

[@simonsandbidstrup1873]

I would love to see how Shell GTL performs in a jet engine, GTL is a diesel compatible fuel made from natural gas. Gtl is a synonym for gas to liquid, The energy density is supposed to be higher than diesel

[@francisconti9085]

WHOOOOOO! Jet-A is a "dry" fuel, no lubes, anti-moisture/ice/biostatic, or static dissapator.. nice thrust.. heat= work done. I don't like excessive flame or smoke..or long starts..but was cool to watch &learn!

[@jetenginethrust863]

"IN THRUST WE TRUST!" :-) Great job on the video & the JET ENGINE THRUST stand. Thank you for sharing. I work on jet engines & aircraft as an A&P mechanic BTW.

[@miguelfranciscogonzalezmor5779]

KSP

[@minijets9652]

Awesome.

[@rudypieplenbosch6752]

Interesting that hydrodiesel performs so well. I read that they did tests with water injection into jets and it did improve performance, probably due to the water expansion.

[@brucekultgen132]

That water jet & jet engine......blow's me away!!! Keep up the videos!!!!

[@vitalyzdtvsecond9711]

Same badass

[@edwardoavila7666]

I was impressed at the biodiesel getting into alot of thrust at a lower RPM than the normal diesel.

[@connarcomstock161]

It's almost as if Jet A is designed to be run in jets...

[@ThePower1037]

What a radical idea.

[@ljprep6250]

That's clean stuff. 6,000 rpm gain and double the power of diesel. Amazing.

[@Dailymailnewz]

278 Newton of thrust, can it be done by an electrical fan?

[@houseofsolomon2440]

Occam's razor

[@vigi86]

Calm down Connar, people might hear this...

[@zrkn1]

That is so amazing and cool. Nice and simple jig to measure the thrust. Must be some very tight tolerances built into that tiny giant. Thanks very much for the video.

[@MrStreetboy80]

That dyno rig is 🔥

[@graham1403]

These lil engines are so friggin cool. Also some of the closed captions are hilarious while the engine is powering up or down.

[@franciscogomes1300]

This is what I call excellent professionals .... we should all be trained that way ...

[@hippopotamus86]

Great editing on the build video. I bet that took some time to do!

[@WarpedYT]

Oh boy it was a little rough, the actual build wasn't too bad it just took me a long time to film the pieces to make it look easy, and get myself re familiarized with the CAM software

[@tobiwonkanogy2975]

The diesels at the start seem to work best when spraying a tiny amount of excess fuel . A blue flame to white is almost always the hottest and most efficient burn. Maybe i dont know enough about jet engines but seems to be set up for lighter fuels and the heavier fuels just seem to glow at he highest RPMs . Overall a smart educating video

[@raygale4198]

In jet engines the rate the fuel burns is critical, a slower burning heavier fuel will tend to burn towards the tailpipe possibly after the power turbine so the engine will lose compression as the turbine blades will not receive the energy to drive the compressor blades at full speed. I worked with some larger Allison turbines changing fuel from Jet A to diesel or to gas would mean changing the entire fuel nozzle and manifolding assembly. Sometimes even the ignitors would need top be changed due to different laminar flow of the fuel mix into the flame cans.

[@TheLtVoss]

@@raygale4198 great explanation I would like to add that jet fuel is a very narrow fraction (the hydrocarbon molecules a almost the same length) so they take in air fuel mix the same time to burn and they burn very clean compared to diesel because diesel isn't so narrow fraction it is composed of longer and shorter hydrocarbons the later once are the reason it burns so suty (and as you validated my assumption that the longer molecules take longer to burn and therefore decrease efficiency) Oh and the water diesel performed better because of the vapor pressure and the water will explode the mico fuel droplets in to smaller once increasing the surface area and therefore burn speed (witch was too slow in plain diesel for that turbine tune)

[@George-jy7op]

GREAT video, from the photography, testing methodology, and all the other stuff that goes into it.

[@jcsottoyt]

You have a problem here: your turbine with Diesel does not reach its full power because you reached the Pump Limit factor which prevents reaching the max RPM you asked for (stick position=RPM order). So either your engine /pump is not meant to use Diesel kind of fuel or the Pump Limit Factor should be increased. I guess this is due to the higher viscosity of the Diesel which requires more effort for the pump

[@WarpedYT]

I think you hit a right on the money, I didn't realize there was a problem until after I published the video and people started pointing it out.. my goal here was to just run the engine and its stock form on those four fuels without modification, I was told that that is the way that guys normally use these engines. I just did some flow tests yesterday to troubleshoot the problem and you are dead on accurate, for some reason the fuel pump is struggling to pump Diesel and biodiesel, and hydro diesel as well but not so much I'm pretty sure because of the viscosity. I'm currently looking into it and I'm going to come up with another test very soon once I fix the problem.

[@Skinflaps_Meatslapper]

@@WarpedYT Power generally goes up slightly from Jet-A to diesel, but so do temps. Keep a close eye on those if you turn the fuel up. I used to run diesel in my PT6 and it worked okay, but it was hell on injectors because of how many more contaminants there were in diesel straight from the pump. You could see sparks flying out the exhaust from the dirty fuel, a little concerning when you're taking off before sunrise.

[@terryperrott9913]

Diesel has more oil in , wich will make it thicker than ' jet fuel '. Very good point.

[@Skinflaps_Meatslapper]

@@terryperrott9913 Paraffin wax...it's what causes diesel to gel up in winter and also why it's refined out of kerosene/Jet-A. It's fairly low viscosity in normal temps but gets really thick below freezing. You don't want your fuel gelling up in sub-zero temps at 30,000ft.

[@rcx6000]

@@WarpedYT If you set the RPM limit to 88000 so that all the fuels can reach the same speeds, it would be a proper performance comparison until you get the fuel system worked out. I just find it weird that your pump can't handle it, my 20+ year old 200N runs diesel on an undervolted fuel pump to the rated rpm limit no problem.

[@shurmurray]

I think the pump is just not calibrated to work with different fuels: temperature and RPMs are lower meaning the turbine is not at full capacity. I.e. needed more fuel.

[@ausfester]

Pump looks to be hitting the pump pwr limit, meaning rpm isn't achieved. Needs to be redone,

[@Liveforeever]

@@ausfester I think it's the different calorific values of the fuels that are producing varying rpms or maybe it is the viscosity not allowing equal fuel delivery

[@EGK20]

No need to calibrated the pump whatsoever. This test shows that the jet fuel is superior than other fuels..the fuel pump not even at maximum capacity but deliver more power than other..

[@shurmurray]

@@EGK20 well, the energy density is different for sure. But it is interesting if it is feasible to use other fuels even at higher consumption rate. Can they produce the same thrust?

[@klausbrinck2137]

Hydrodiesel contains water, so, for sure lower BTUs than JetA, and still just 87,65% of the thrust. I guess hydrodiesel wins this efficiency test, perhaps easily, since hydrodiesel BTUs are, for sure, less than 87,65% of JetA BTUs... Hydrodiesel has 30% watter and 10% tensides, so, best case 97,300 , that´s only 72% of JetA BTUs (worst case: only 62,5% of JetA BTUs). Of course, I have no idea if he used similar volumes of the different fuels...

[@matthewlemke5265]

Would like to see "offroad" diesel tested also. Its the red colored diesel with high sulfur content.

[@martinandersson5278]

In order to establish automotive diesel oil standard which can be adapted to China-IV stage emission standard, engine performance test was performed on a high common rail pressure, turbocharged intercooling diesel engine, which could reach Euro-IV emission standard, by using the diesel oil with different sulfur content, and the effect of sulfur content on the first and secondary sulfate PM emissions was predicted by the experimental results and literature search. Engine test results show that the sulfate in PM, gaseous SO2 increase linearly with increase of sulfur content, during ESC test cycle, the sulfate emission of diesel oil with 500 μg sulfur/g is 40% of Euro-IV PM limit; the conversion rate from S to sulfate is about 1%-2%, and sulfur content has no significant effect on power, fuel consumption, non-sulfur emissions and in-cylinder combustion process of diesel engine.

[@brandonbaney5734]

I believe the red is also ultra low sulfur. Sulfur was used as a lubricant.

[@highlandrab19]

The sulfur was present as it is naturally in the crude oil and refines out with the heavier fractions of oil. As it caused no problems to the operation of the engine it was not removed until the high amounts of sulphur dioxide in exhaust emissions became an issue with the rise in acid rain. It is now routinely removed from fuel oils except the heavy oil used in ships and aviation fuel as there is still no legal requirement and it would increase fuel cost

[@tobystacy959]

Only difference is taxes anymore. Been that way a few years

[@altonb93]

Offroad diesel just has red dye in it. Meant for farming and non taxed.

[@matt8863]

Nothing beats the wonderful aroma of Jet-A.

[@SedrikGSX]

Jet engines makes noise* YT: This is definitively music

[@Highlandword9]

Well the way music has gone recently I can understand that.

[@michaelz6870]

hear hear!

[@michaelz6870]

@@Highlandword9 Oh you keep quiet there, Mr. McPoopypants.

[@DudeWhoSaysDeez]

Listening to this at full volume is what tinnitus is like

[@andyman8630]

except not as loud

[@Nifilheimur]

got really bad tinnitus and yubb thats about it.

[@Skinflaps_Meatslapper]

Maybe not quite that dramatic, but the frequency is about right.

[@davydiver]

yep

[@Paxmax]

Can confirm.

[@ViperGTS737]

06:10 is just glorious to watch that engine roar

[@kennai6434]

my PS4 does that too!

[@murkinranzyz9961]

Don’t judge me but I find this very amusing and I also fine falling asleep listening to jet engine sound so easy for me to go to sleep to remind me of being on the JetBlue plane

[@jcims]

Sweet shot at 5:23! Awesome test overall and great dyno build. That hydrodiesel is weird indeed, crazy how much more power it had than the other two diesels.

[@tombickers]

>engine spools up KZbin: [Music] >engine spools down KZbin: [Applause]

[@daastan47]

😂😂😂🤷

[@Outrxge]

Lol idk why yt does that

[@minijets9652]

As always :)

[@unbelievablegoodio7176]

AI is so stupid, Absent Intelligence.

[@nefariouspurplebadger]

The engine most likely has fuel injectors that are optimised for a certain type of fuel. I’d love to see these tests done again with the appropriate injectors for each fuel.

[@WarpedYT]

I'm currently trying to figure it out I'm going to update everybody really soon

[@isaacsrandomvideos667]

Warped Perception :)

[@ScarryMarian2012]

@@WarpedYT did "someone forgot to add vegetable oil (as a doable substitute for diesel) among those types of diesels ? Might be you tho :-) Best regards from Romania :-D

[@ScarryMarian2012]

@@WarpedYT since biodiesel and hidrodiesel are some somehow a bit of substitute for conventional diesel,why not the (as example) the sunflower oil? Farmers on my country use that vegetable oil in 80% oil - 20% diesel mix to run their tractors in farming campaigns and they loose almost no power/performance,just a little shorter lifespan for the injector nozzles,but it last for few dozen tank refills until that happen,unless they get a bad mechanic.

[@shadowopsairman1583]

Biodiesel has less BTUs, used less fuel and had more Thrust.

[@daumzu1]

You did what 1.5 billion Chinese couldn't do!

[@collinmac24]

Project farm is THE PERFECT CHOICE for testing these fuels

[@madisonbrown8851]

They need to collab

[@martiniv8924]

Jet A1 ah the smell of the Airport ! , Diesel, ah the smell of a Truck Stop ! , Bio Diesel, ah the Smell of McDonalds !, Hydro Diesel , ah the smell of the Boats Bilge ! 🤪 Great Test, enjoyed that 👍🏻😎

[@berndp3426]

That "hydrodiesel" fuel looks quite awkward. Ok it behaves like diesel finally, but who would first-hand believe that this "white foamy soup" would even drive any kind of engine.. unbelievable.

[@martinp1224]

im not an engineer but could it be the reason it isnt the norm apart from power output? i mean you dont want bubbles or inconsistencies in your fuel lines for a commercial airliner or a fighter jet right? someone school me please i wanna know

[@untitledisdead]

I thought it was pretty obvious jetfuel would take the cake. Its so freaking pure. That said I was rooting for hydrodiesel and was pleasantly surprised to find it at 2nd when it comes to power output. Diesel itself gets an average job done but lets talk about how efficient biodiesel is--

[@robertsmith2956]

liberals never think. To make bio diesel you have to kill the plants that are eating co2, and making oxygen. You make things worse doing it.

[@pumello]

16:40 Captions : "Music" Ah yes, human music of the human variety. My favorite.

[@Penfold101]

In case anyone is wondering, this does indeed mean that you can run a diesel car in aviation jet fuel. It’s definitely not something us aircraft engineers do though, honest...

[@LatitudeSky]

Yes, most likely. The military runs a lot of their ground vehicles on jet fuel because they only have one kind of fuel to manage for air and ground vehicles. Kerosene, diesel and jet-A should all work. The thing is, diesel is the cheap option. You would end up spending a lot more if you bought jet-A or kero.

[@easternwoods4378]

@@LatitudeSky And the military doesn't care. Actually the cost of managing many fuel types is more expensive.

[@soulcapitalist6204]

The difference is that at jet-a will not turn to margarine at altitude and low temps where jets are efficient. We were trying to figure this out in biodiesel without dehydrogenation in university.

[@WayFastWhitey02]

I may or may not have seen co-workers take buckets of JP8 out to their diesel trucks after draining the fuel lines post test cell runs....

[@jjohnson2553]

@@LatitudeSky "You would end up spending a lot more if you bought jet-A or kero" Unless you grew up with a guy that became a crop duster pilot that buys his jet-A by the tanker load. Nice discount.

[@qasimmir7117]

My guess for the hydro-diesel is that the extra water content produced steam, that steam pressure compensated for the lack of fuel in the other diesels. Though it could be that the pump found it harder to pump the normal and bio diesel.

[@Nickael7]

Diesels in general are very viscous fuel compare to jet fuel or kerosene.

[@qasimmir7117]

Nickael7 Yeh that’s what I’m saying.

[@ΘΕΟΔΩΡΟΣΜΙΝΕΣΧΟΣ]

SPEECHLESS !!!!!!!!!!! MECHANICAL ENGINEER REVEALED !!!!!!!!!!!!!! CONGRATULATIONS !!!!!!!!!!!!!!!

[@Pengochan]

It's probably not a good idea to pour hydrodiesel when it's frozen. You could easily get a higher or lower water content in the part you poured (i.e. more or less ice than "average").

[@pabloestafez6830]

I commented the same..definitely should have been considered

[@flaplaya]

Just when you think it's reached maximum thrust... Jet Engine: Yeah right BYEEE!!!

[@RB-xv4si]

I’m sure a lot of people were taken off-guard by how long it takes the engine from start up just to reach idle...they probably thought its idle was full thrust until he actually hit the gas.

[@binarybox.binarybox]

Excellent build and interesting results at the end.

[@johnburgess2084]

You said, "I went to a lot of trouble and a lot of work, . . .". At the start I was thinking that this guy (you) is having more fun designing and building the test fixture than actually doing the exercises with the fuels!

[@tm502010]

Watching you build is often creates mega envy. You have a disturbing amount of AWESOME TOOLS available for use! Serious industrial grade mojo! 😂

[@jamesf6713]

Wow, I didn’t expect the Hydo to run so well. Great job mate👍

[@davidfeliphe5816]

What career path should I follow in college to manufacture aircraft turbines?

[@supergeekotaku]

Definitely Aeronautic/Aerospacial Engineering

[@hisheeelijah1482]

Guacamole studies wink wink

[@threexfromwsg]

Mechanical engineering

[@nedk09]

Materials / manufacture Engineering comes into it as well.

[@anthonyross4418]

Aerospace propulsion engineering

[@Shockwave00108]

I'd like to see you put that thing on an rc fighter. The first test literally looked exactly like a real afterburner in full throttle, very nice video

[@MoMaCaniRakun]

Professional Engineers: How to start a Jet. Me 21 dumb engineer college kid: Area 51 here I come babyyyyyyyy....!!!!

[@TheChristIsKing]

This was an interesting experiment but I don't think it was done correctly (at least not for measuring max thrust). The limiting factor in a jet engine is temperature. The more fuel you add, the more thrust you get and the higher your EGT. You can keep increasing fuel (and thrust) until it flies apart. Your "constant" should have been EGT, but instead what you probably kept constant was the power going to your fuel pump. More than likely JetA won because it was thinner and the flow rate was higher. I think the right way would be to pick a constant EGT, say 710*C, and test each fuel to that limit. Keep increasing fuel flow until you get to that limit for each fuel. Yes, you might have to change pumps or injectors for each test, but that is the whole point. Otherwise you are just testing which fuel has the lowest viscosity. I think....

[@alexpolakis2016]

that makes a lot of sense actually. seems like another experiment is in order

[@HaibaneKuu]

Wouldn't you get around the same thrust with the same EGT on the same engine?

[@aryanarya72]

No offense buddy but according to me the objective of this experiment was to calculate what maximum thrust can be produced by the fuel. By fixing EGT I think it would limit the full power or rpm. Like you said, pumps/injectors should have been changed as per the fuel which I totally agree. I have one question though, shouldn't the cooling mechanism for different fuels be different, like in a real jet engine?

[@Madhibiki]

HydroDiesel : Thats pretty close to how my RTX3080ti is currently acting !

[@StarFury2]

Liar, no one can get those!

[@akramkarani4083]

StarFury2 only the lucky ones

[@ChristianBalle0]

Hi, Love you From Pakistan. You deserved millions of subscribers. You are very Intelligent.

[@TitanreaperYT]

5:02 Sounds like a Mechanical Harddrive from the 80s starting up Ngl

[@lumumbandi6463]

My next comment was that "cad/cam, i wanted, in 70's,80's , while punch cards are popular

[@alkalinebass]

yeah, in the following head test would point the dyno to 10lb... rattle noise is normal ;-)

[@Dewey_the_25U]

I'm pretty sure the Hydrodiesel would allow for a longer operating time because the water also cools the engine and increases efficiency.

[@Saltymedpac8008]

What would be the cleaner burn tho? Does hydro diesel leave more residue if any?

[@minhducnguyen9276]

Then again, 20% of the fuel mass is replaced with water so unless the increased fuel efficiency is great enough it won't make up for the reduction in fuel capacity.

[@kdog3908]

The algorithm leads us upon a path of mystery and wonder!

[@kielord2133]

This is something I thought I’d never see and it’s glorious

[@tiltedjack9946]

Some of the Water molecules in the hydro diesel might undergo thermolysis, giving off hydrogen and oxygen which then recombine within the engine at very high calorific value enhancing the pressure build up which in turn kicks up the thrust... Thermolysis jump starts at 550°c and with the insane compression and heated metal parts there is a chance for some of the water molecules to split🙂🙌

[@SpiraSpiraSpira]

Normal inter-turbine temperature (not even hottest part of the engine) on the actual airplanes I fly is 700-720 degrees C, so this is quite possible.

[@LTVoyager]

Ever hear of that new high tech device called a funnel? 😂

[@AibolRamazanov]

supercool video for anyone who is studying the subject and for those ones who are new into engineering stuff

[@TowMater603]

KZbin really needs to make a LOVE THAT button.

[@2fxst2drxft]

So small yet so damn loud and powerful. The rpms almost made it to 100k!

[@MigotRen]

The startup already sounds like this things its gonna shred itself apart. BUT THEN ACTUAL THROTTLE

[@kyle6521]

Lmao right. it was idling and I was like damn that shits loud and revving pretty high then he turned the throttle on lmao.

[@gernblenstein1541]

There’s always one who will ask the stupid question. What if you add some nitro to the mix with a little more oil for added lubrication? That would get the temps and rpms up. Great content! Such fun.

[@askhowiknow5527]

I wish I had this as a diesel turbine generator. Everyone at the campsite would love me because of the sweet sounds it makes

[@nerd1000ify]

The fuel consumption might be a bit of an issue tho.