After 50 years in storage

[@richardvanroie3852]

Big fan of Avro Canada, the CF-100 and the CF-105 Arrow thanks for this video, nice to hear the powerplant of 1 of my favorite jets of all time

[@sandyjohnson4182]

A longstanding Canadian tradition; running a jet engine in a snow storm to keep warm!! Thanks for the video. There is a CF-100 on a pedestal at Haliburton, Ont. next to the high school; at least there was a decade ago. Probably others around Canada in a few places.

[@anorris1212]

In my fathers early days of engineering, he worked at AVRO. If I recall correctly, he designed one of the cooling tubes between some section, and a part for the charging system. He left the company before the big project. I did get to see the Orenda engine with him many years ago when the AVRO air historic show came through Winnipeg's aviation museum. Thank you for this memorable video.

[@AgentJayZ]

Thank you for the historical connection. We who work on these engines realize that all the real experts are no longer able to help us, but we sure wish they could!

[@mikesquire7731]

What an amazing engine and important piece of aviation history and to hear it run after so many years.

[@murraystewartj]

Came across you when you'd commented on another video - lucky break for me. Took watching one of your videos to get you a sub. Keep up the great work preserving our Canadian aviation history, and showing it to the world.

[@dodaexploda]

I got to go to an open doors event in Mississauga where they have a CF-100 mounted on a pedestal in a park. This is around the corner from where the Avro Arrow factory was. At the event one of the pilots regailed tales of flying the plane. One of the interesting stories was another CF-100 had an oxygen failure and the pilot was unconcious. They had to fly up and very gingerly use their wing to tip the other planes wing to get it to bank and lose altitude. I also liked the story about escorting an Avro Arrow on a speed run and being completely and totally left in the dust. The CF-100 is a lovely plane.

[@SquillyMon]

Amazing such high quality precision engineered and built way back in the 1950's no less ! This is the first time we can really see the Jet Wash and how far it goes...the snow is an excellent visual aid here. Just amazing !

[@joshvellieux8693]

I’d love to see a Orenda Iriquoa run at full power

[@dustinandtarynwolfe5540]

You may get your chance. The one that is left is being refurbished to run as a static display.

[@allanlacosse6630]

CF-100 engines were also shipped to Wright Patterson AFB. I saw them in Air Canada Cargo a few years ago, still in the military crates.

[@jimmysparks315]

Looked great with the snow outside.... Sounds awesome.

[@ThomasGabrielsen]

Your knowledge about jet engines is impressive! Thumbs up!

[@TechNed]

What sheer awesomeness. I love the Sabre. We had one suspended on wire from our hangar roof in air cadets.

[@edkolodychuk3597]

Ned m

[@jakubpolomsky]

This is the best Christmas gift you could have given to us! (in my opinion) thank you for sharing!! :) merry christmas!

[@avioncamper]

You have snow !!! The East Coast is roasting, 80f in NC, 64f in NYC, crazy weather we are having. Love the videos.

[@nyefamily1]

Nice to see the thrust measuring system done correctly with arms not silly sliders. Merry Christmas, keep the good videos coming please! Mark Nye

[@andrelabbe5315]

Merci de remettre une parti de notre histoire en vie apres tout ce temps

[@DScottDuncan]

Good to see the classics run! Thanks for sharing & Merry Christmas from Indy! Cheers. DD

[@danoisca]

Thanks for spreading the knowledge, I hope you enjoy it as I do...kudos

[@SuperMickeyhouse]

Thank you so much for all your knowledge that you have taught me in your video's

[@dtardis]

Love your videos! Thanks for showing the computer screen with some of the performance data!

[@tizer33]

Just love what you do. Thanks for sharing

[@titaniumdiveknife]

This. This is high quality.

[@chrissilsby4312]

Hearing a 50 year old engine run up to such smooth sounding engine is pretty cool. I also would like to hear the latter engine run up.

[@epicdriver4g]

awesome videos, thnx for putting up with the cold in order to show us.

[@Kalimerakis]

This was just plain cool! 5:40 even the cinematography is great! Makes me appreciate that there's still people around running these old engines and even sharing them with us. Thanks Jay! Also did you not change the oil after having it sit for over 50 years?

[@philzambo]

Merry Christmas Jayz, best engineering videos on KZbin

[@joshuaayala567]

Merry Xmas AgentJayZ you are awesome!!

[@hendrikhendrikson2941]

Wow, what an amazing treat this was! Thanks|

[@gentleman4512]

Bonjour M. Jay ! just for information, Canadair was officially open in 1944 in Montréal ! but history said it began with Canadian Vickers also in Montréal around 1912 were the build first ships ! and after, wood aircrafts and this is how it all start... Merci et bonne Journée ! Serge

[@MrBen527]

What a nice X-Mas gift!!!

[@seanavery7265]

thanks and have a merry Christmas jay.

[@keithalanwilhelm1952]

Thank you for your information.

[@X031]

Sure hope they get a CF-100 down here in London Ont..lots of T-33's and North Bays last Voodoo....My Dad ended his career with 414SQN and to honor him and his battle against cancer I got the 414SQN Black Knight tat on my left arm ( I was Infantry1RCR) Would love to go for a flight in the new Red Knight T-33...thanks for posting...meant to mention Dad was avionics tech

[@youtubasoarus]

Tempted to run out to Malton, Ontario to do some video of the CF-100 on display there, haven't seen it in years. Kind of run down after all these years, but still cool. Great video! Imagine 2 of these babies screaming on the tarmac. Ha! The mystique surrounding that area has all but died down these days. I don't know that half the people driving through really know or care how much stuff was developed there.

[@rathkoole]

that was fun :) thanks for another great video. Merry Christmas.

[@abcdef-cf2uk]

Long time no see Jay, Glad you're still in the saddle.

[@brettany_renee_blatchley]

Goodness...last overhauled when I was two. She's aged nicely!

[@glen6945]

hi love

[@georgelove767]

Sounded GREAT!! I cannot wait to hear the Arrow engine in GULL AFTERBURNER.

[@georgelove767]

Sorry for the typo.

[@AgentJayZ]

It's easy to edit your comment. Click those three dots.

[@sighpocket5]

Thanks Jay.... Merry Christmas (aka.. Joyeux Noel !)

[@OldProp1941]

Excellent! Great to see you've brought a Type 11 back to life, Jay. Now, how about that piece of Canadian history, your Type 13, the legendary Iroquois? When you get that going, it'll be the only one on earth.

[@daveleader1557]

Yes Would pay money to see an Iroquois running

[@dvamateur]

The sound of the engine must be even louder in this hollow metal wall enclosed space. Outside, the sound waves energy would simply dissipate into the atmosphere. But here, the sound wave get reflected off the walls, causing all kinds of reverberations. The sound amplitude levels in this test room must be incredible, because all this energy is enclosed in the room, reflecting back in itself; it must be incredibly loud.

[@AgentJayZ]

You are correct. !

[@dvamateur]

AgentJayZ I always wonder though, how much of the turbojet sound is produced by the bearings grinding and such, and how much of the sound comes from the air flow itself.

[@AdamWebb1982]

Merry Christmas Jet City!

[@lazaglider]

9 likes, 1 dislike? Fuck you internet. Merry christmas Jay, thanks for what you do.

[@AgentJayZ]

+lazaglider Thanks! There are one or two dedicated haters out there who make sure to dislike almost every one of my videos. I'm just glad they are watching!

[@DesWhiteShark]

+AgentJayZ There are robots that dislike all videos more or less popular. Who knows what's their deal.

[@DScottDuncan]

+AgentJayZ There is a "Richard Cranium" in every crowd. Thanks for your efforts. DD

[@dtiydr]

+AgentJayZ They are those who are just pissed they don't have your job.

[@billyost1479]

Avro got screwed badly by us. Hopefully Canada learned to NOT listen to their politicians and US gov. The Arrow was the SCHIZZNIZZLE of jet interception. One of my favorites in fact.

[@vernonlemoignan1392]

I think its a crime that we don’t have a flying cf-100 , especially with the expertise available where you work. If i won lotto max i would try to get a couple flying for air shows.

[@AgentJayZ]

I know a guy (American) who wants to restore a CF-100. I told him I would help any way I could. We literally have Orenda 11s in stock. They need a serious going over, but we have 'em.

[@BauJAhr78Television]

Great Jet Engine, Thank you fot the Video !!

[@Ronke01]

Belgium even had some Avro CF-100's once...

[@hommie789]

Hi Jay, Merry Christmas to you and yours. A set of questions for you, how much does weather effect testing these engines? Is the effect measureable? And what is the most effect on the performance, cold weather allowing more power due to more air molecules packed into a given volume of air? Or would it be a small loss of power in rain/stormy due to lower atmospheric pressure? Another great video, you never disappoint always makes my day to see a new video in my subscription.

[@AgentJayZ]

+hommie789 Air density has a big effect on jet engine performance. Pressure and temp both are very important to air density. Exactly how much? There are equations and tables to help pilots figure that out every time they prep for takeoff. I don'y have them here, but they are google-able.

[@hyperplastic]

Hi Jay, I recently discovered your channel and have watched a load of your awesome videos. Thank you for all your effort. I searched for an answer to my question in your videos and Google but cannot find an answer, apologies if it's been asked before. Why does it seem all the engines you work on are really old!? eg. This engine, the T58, the J79... surely the improvements in efficiency/reliability/performance/materials over the last 40-60(!!) years would justify purchasing a newer engine? Is it just the case that development effort has been focussed on turbofans? It boggles my mind

[@nerfinator03]

I think most of the stuff they refurbish doesen't get to fly but is either used to run generators or something similiar. Hope some of them do actually fly

[@MarkRose1337]

If an engine is only used occasionally, the lower financing costs of an old, inefficient engine outweigh the fuel savings of a new engine. It's the same reason why almost all short-haul freighter aircraft are converted from decade-old less-efficient passenger jets and not bought new: freighters usually only fly a few hours a day, while passenger jets are in the air half the time or more.

[@shaunwest4152]

great video, sound was great:)

[@jamesbower8269]

amazing vid. your a legend dr z

[@TeemarkConvair]

great run, thanks merry christmas.. now, santa, did u notice the "hot spot" from the burner at 1 o'clock at 8:30 as the throttle was increased? thanks for the vid

[@DanBowkley]

Cmon, admit it...you just fired it up to de-ice your driveway! Is this going into a restoration project or something?

[@piotrlenarczyk5803]

Is it possible, to use a contrarotary Francise turbine with slightly bigger diameter between inlet compressor stages instead of a stationary scoops? I am a plane engines newbie, but I think that it could increase compression ratio and decrease compressors stages and overall weigth.

[@AgentJayZ]

+Piotr Lenarczyk The bell mouth is a simple, effective device, attached temporarily for testing purposes. Your idea contains precision airfoils, spinning parts, bearings,etc. If even possible, it would change the characteristics of the engine, invalidate the test, and be vastly more expensive.

[@AgentJayZ]

+Piotr Lenarczyk The weight would be hugely increased.

[@richardvanroie3852]

Just think 2 of these Orenda 11's powered an Avro Canada CF-100mk.4 piloted by Jan Zurakowski to Mach 1+ on December 18th 1952, making it the first straight wing airbreathing jet interceptor to sustain supersonic speeds.

[@OldProp1941]

+Richard van roie A famous flight by a famous pilot. Pretty much killed off the CF-103 project, eh? The CF-103, the "swept-wing" CF-100. was expected to be only marginally faster than the "Clunk" anyway, and if the older plane, already in production, could go supersonic and survive, who needed the hassle of developing anything between the CF-100 and "the next one" -- which turned out to be the Avro Arrow with the Orenda 13s, the Iroquois. Jurakowski went to about Mach 1.06, in an aircraft redlined at Mach 0.85 (although, to be fair, you really can't fly straight down all the time).

[@123davow]

Now here's a crazy Q. Looks mighty cold on that test. How do you think things would go with the front doors closed? lol. I imagine a few cool wind vortices, fumes, danger.... but would it be a tad warmer from ambient engine temp and something that has ever been even notionally considered ?

[@GT6pilot]

I have seen several "pickled" engines run after a long storage interval. What has to happen before the engine can be (hopefully) successfully run? What is involved in a pre-flight for the test stand after long storage of a used engine?

[@motormouser]

Great video...Have a Merry Christmas :)

[@tomazdolenc]

Hi. Looking all that melted snow I was wondering what temperatures are produced in combustion chambers and what are the temperatures of exhaust air. Thx.

[@ShannonSmith4u2]

Ok, what all does the oil system do? Lubrication, obviously, but to what parts and bearings? Thank you!!

[@AgentJayZ]

You may enjoy watching my video called Jet Engine Lube System.

[@donaldstanfield8862]

+AgentJayZ Did you get magazine? Hilarious bit about proper operation of product for max. performance!

[@AgentJayZ]

+Donald Stanfield Yes, thanks! Right now I'm in Victoria, and have left the mag with Robin, the president of S&S Turbines. Upon my return I want to read the article about the Chrysler turbine car.

[@crissd8283]

+AgentJayZ Jay Leno has one. Just search youtube for: 1963 Chrysler Turbine: Ultimate Edition - Jay Leno's Garage

[@neurodreamer2011]

nice demo video

[@edwardcarberry1095]

Didn't those engines needed wider fuselage for those engines? Or which ones were they?

[@petrkosvica7372]

wow, new snow-remover. :-) Marry Xmas Mr. JayZ

[@zebalford6587]

What’s the one for the arrow

[@deSloleye]

What are the flashes of flame out the turbine caused by a the engine is running? Is it rough fuel control, oil leaks or the effect of snow flakes ingested into the engine?

[@AgentJayZ]

+deSloleye I think it's mostly your first option. It cleared up on subsequent runs.

[@Andrea-pd4mx]

my burner Riello Ahhhh Good Job

[@AVMamfortas]

Bravo !

[@Braeden123698745]

You can hear a jetliner 30,000 feet away. I think that tells us just how loud these engines are.

[@SquillyMon]

30K Feet and MANY MANY MILES as well...dont forget that also ! Whew thatsa Loud !

[@AgentJayZ]

Ever watched a 787 takeoff? You can barely hear it. Engines are getting quieter with each generation.

[@SquillyMon]

AgentJayZ Yes, they surely are getting quieter...every time I hear one in the air I swear I can hear what sounds like prop wash...that must be the noise of the big fan.

[@leooliphant2614]

Hey Jay, love the videos. Just one quick question, is that engine mounted on just the two aft side mounts? The front to seems to just be floating out there.

[@AgentJayZ]

+Leo Oliphant Look carefully, and you will see a thin strut holding up the back. The strut is under about 250lbs of compression at rest. Since the engine is mounted in pivots that are below its centerline, the strut is placed under tension as the engine begins to produce thrust. At max output, the strut is under about 1000lbs of tension. No sweat, it's a 7/8" threaded rod,

[@ThePugMonkey]

Hi Jay, I'd love to know what brand of ear protection you use. The gota be good to withstand dB's that big. Where do you get them?

[@AgentJayZ]

+ThePugMonkey None of the ear protection we have is adequate on its own for the loudest tests. Combinations must be used, such as over ear plus earplugs, earplugs plus hands over ears, earplugs plus being inside the control room, etc.

[@nonoaidnono]

I've just had an idea, take a high bypass turbofan, and put an afterburner on the back, whenever the afterburner is 'on', all the bypass air is squeezed into the afterburner pipe and is burnt. Would this work?

[@AgentJayZ]

+Aidan Brown Yes, but there is no demand for it, and so it will never be made.

[@nonoaidnono]

+AgentJayZ dammit, thanks though!

[@bynunenkim603]

isn't it really cool when that gas turbine gushes out the flame with a snowy background?thanks for the footage by the way.

[@geraldgepes]

On power down, this engine had quite a worble to it, is that typical? Could it be bearing noise?

[@AgentJayZ]

Yes. No.

[@donaldstanfield8862]

Why flame, smoke, flame sequence here? That looks different, right? I don't recall this in previous tests.

[@AgentJayZ]

+Donald Stanfield After all that time sleeping, this is the first start attempt, and a little throat-clearing is to be expected. Flames belching out the back is a normal start for these first-gen axial flow turbojets.

[@oswynfaux]

Keep em coming. Hope you have better luck next year. Did you end up repairing or replacing that gear box that failed?

[@AgentJayZ]

+Oswyn Faux Which gearbox do you mean? If I mention it in a video, could you give me the title?

[@oswynfaux]

Jet boat races in Taylor - 2015 World Marathon. The reversing gear box that drives the jet pump crapped out in the middle of a great run.

[@AgentJayZ]

Oh, right. I couldn't remember because that's a boat part, not an engine part, and not something I work on. It was replaced and the boat was back in operation by the next event... a couple weeks later.

[@princebatswater]

Can you please explain the engine mountings? It didn't appear to have any support at the front like the other engines you show.

[@AgentJayZ]

+princebatswater There's a strut at the back that is holding the engine in angular position. The two pivots in the middle support the engine weight and keep it fixed in a fore and aft position.

[@spishco]

What ever happened to the Iroquois you were restoring?

[@scarecrow1323]

Hi Jay, it's Ben from London again. Hey... you have said several times that the J-79 burns @ full throttle 45 Gallons per minute.... that seems like an enormous amount of fuel. I know that you know your business, but are you sure that it's not 45 Litres per minute? I can't picture in my minds eye where they would keep all that fuel. That's would be about 2700 gallons per hour per engine.... or 120 of 45 gallon drums full of fuel per hour. How could they possibly fly for over 2 hours at a time without refuelling?

[@AgentJayZ]

35 to 40 gpm dry. 85 to 90 gpm in afterburner. The fact that you don't know how much of the aircraft is devoted to fuel storage, or that you don't "get" midair refueling, or that you don't know how frequently that refueling is required... all of that is not evidence for anything. It's simply information that you can learn about...

[@scarecrow1323]

@@AgentJayZ 10/4. thnx dude. I know that you are well informed and obviously know very much more than I do about jet engines. I was just having trouble visualizing the quantities. Thanks again man.

[@scarecrow1323]

Hi Jay, would jet engines in a fighter jet or in industrial use be running at full throttle most of the time... or do they produce 50% of max thrust at half throttle? I guess what I'm asking is does the throttle input proportionately match the thrust output?

[@AgentJayZ]

The power is not proportional until the engine is running at about 90% rpm. Jet engines are very inefficient at turning fuel into power until they are near their rated maximum output.

[@scarecrow1323]

@@AgentJayZ very interesting... thank you kind for always replying so promptly. u rock dude.

[@PhillipMorton]

Jay, where do the store these engines? Do they have any special storage requirements? Thanks

[@AgentJayZ]

+Phillip Morton We keep them in their original hard shell cases.

[@PhillipMorton]

AgentJayZ Sorry, I mean where we they during the last 5 decades? Thanks

[@1946nimrod]

That's the way to clear snow.....

[@olavipasanen4471]

Watching old movies/documentaries you can see a lot of smoke from a jet fighter/commercial airliner. There is a big change to modern planes. Major reason for the change in fuel development or in combustion chambers/nozzles development or....? Better fuel economy? How much is it better in modern engines to engines from the 50´s? 50 %?

[@grahamj9101]

+Olavi Pasanen The early jet engines typically had atomising burners, which would tend to give give a very rich local air/fuel ratio in the primary zone. In addition, combustion chamber design and development was something of a 'black art', rather than an exact science. Getting a combustion chamber to work at all was progress and what if it smoked a little? There were notable exceptions: Armstrong Siddeley engines with their vaporiser combustion chambers were virtually smoke free. If you can find a film clip of a Wright J65 (license-built Armstrong Siddeley Sapphire) powered aircraft (eg, F84F Thunderstreak), you should be able to see the difference. Modern engines typically have so-called 'airspray' burners, where fuel and air are mixed in the actual burner head, resulting in much improved fuel atomisation and vaporisation and the avoidance of locally rich areas.

[@AgentJayZ]

+grahamj9101 You might find a film clip of a J65 in one of my fuel nozzle videos... where I look inside a J65 at the vapourizing fuel nozzles... funny that.

[@grahamj9101]

+AgentJayZ Yes, it was 'Jet fuel Nozzles IV', dating back to Dec '13. I first found it some months ago and left a (long) comment. Looking at your clip again brings back memories of seeing Sapphires going through repair and overhaul.

[@1994delicaman]

Hey jay, you should do a meet and greet when you are in vancouver

[@keltickiwi]

Do you guys have any specialized hearing protection?

[@geraldleat5970]

Avro CF-100

[@builtrodewreckedit]

Made in Canada. Just as good as anywhere else only more polite.

[@lewsdiod]

I notice your left/right perspective is based on viewing the engine from "behind" i e from where the exhaust goes out. Is there any reason for this? My guts would assume the default is viewing the engine from the front side. Not that it matters, I just found it curious.

[@AgentJayZ]

+lewsdiod Because... let's face it: the engine makes noise but does nothing visually interesting when viewed from the front. From the rear, we get to see the flames on start up. That is the only reason I try to start my videos... at the start, from the back. Not exactly a big secret, eh?

[@grahamj9101]

+lewsdiod The convention that I was brought up with in the industry is that left and right (and direction of rotation) of an engine is defined as 'when viewed from the rear'. That goes for an aircraft, too: the left wing is the one on the left, when facing forward, and the right wing (surprise, surprise) is the one on the right. Beyond that, the engines on, say, a B.747 (or an A380) are numbered from left to right. This reminds me of a joke that I was told, years ago, by a senior Boeing guy. The first officer on a B.747 noticed that the captain would always take a slip of paper out of his brief case, read it, then put it away before the flight. After one flight, he managed to get hold of the slip of paper: it read, "No.1 engine is the furthest one out on your left side."

[@steveegbert7429]

+lewsdiod Just as you have only one left side, so too an engine, car, airplane, or caribou. Whether I'm facing you or turned away from you, my right and left are still the same. The front of any machine like an auto, jet or tractor is its face.

[@lewsdiod]

+Steve Egbert Yeah I realize from the explanations that when you look at it from the perspective of the vehicle, it becomes natural that you're facing the same direction as the vehicle is intended to go. Thanks all :)

[@robertsmith3774]

Everything is from the pilots perspective when he is in the cockpit. His let and his right. It is always how it's been.

[@McFingal]

I've been meaning to ask you, you did a video about oil cooling. If I'm not mistaken do some engines run the engine oil through the fan blades for extra cooling?

[@AgentJayZ]

+The Texas Gun Guy No, that's never done. Their is sometimes an oil cooler installed in the fan air stream on big turbofans, but no engine I know of runs oil inside the fan blades.

[@McFingal]

+Anthony Smith: Thank you, I stand corrected, the reason I asked is because I had seen fan blades with what looked like oil holes in them at the bottom. They were equidistant from the front to back, so they would line up on the platen (for lack of the correct word).

[@grahamj9101]

+The Texas Gun Guy You might have seen inlet guide vanes (IGVs), in particular, the VIGVs in the Avon, with holes near the trailing edges of the vanes, where anti-icing air is exhausted. From memory, the Tyne turboprop engine used engine/reduction gearbox oil passing through drillings in the intake struts for anti-icing.

[@grahamj9101]

+The Texas Gun Guy It has also occurred to me that you might be confusing a cooled turbine blade with a fan blade. Fan blades do not need cooling, but high pressure turbine blades (except those in the early jet engines) most definitely do. I happen to have in my possession an Olympus 593 cooled LP turbine blade. The blade root has a series of holes into which cooling air is blown. The air flows outwards through holes drilled through the aerofoil, to exhaust at the tip. More modern designs of cooled blades have far more complex cooling air passages than this design, which dates back to the 1960s.

[@McFingal]

+grahamj9101 thanks, I did find them in a scrap yard hunt.

[@mlawrence5084]

Why does the engine have a white duct over the intake

[@AgentJayZ]

+M Lawrence Playlist: your questions answered. Key word: bellmouth inlet

[@erickrcisneros]

Wonder what a GE9X Would do

[@allanmacdonald1825]

This might be a picky comment, but I thought the Iroquois never actually took to the air installed in an Arrow, because Diefenbaker (excuse my language) sacked the program before they were ready for the test flight. I'd ask my father who is now a couple years gone now, who was one of the people who ran the test cells at Orenda.

[@AgentJayZ]

Yes, you are right. The Arrow only flew with a pair of P&W J75 engines. Larger than the J79, a single J75 powered the supersonic F-105 Thunderchief.

[@Galfonz]

Are the flames coming out the back normal? You never see this in modern engines.

[@AgentJayZ]

+Galfonz the flames coming out the back Are normal. You (almost) never see this in modern engines. You see what I did there?

[@ranchrods1]

sooooo when are you gunna get the Iroquois up and running?

[@AgentJayZ]

Its not up to me. The job will take many hundreds of hours of skilled work, and times are pretty tight right now.

[@kingdill87]

very cool!

[@oakmanrob]

Do you know what the ration of air going in vs air going out of the engine at full power and what that would be called?

[@oakmanrob]

+Rob Oakman *Ratio

[@AgentJayZ]

+Rob Oakman All the air going in comes out. It's 1:1. I think you are thinking of some other ratio, but I'm not sure what you mean.

[@oakmanrob]

I mean how much air is coming into the engine by volume and how much volume exits the engine after combustion? Does the burning fuel add volume or just speed?

[@AgentJayZ]

Well, the burning fuel causes massive expansion of the gases due to heating. In order to get that much more volume out of the engine in the same amount of time, it has to go way faster. The result of the acceleration of the gases going out the back is thrust forces on the engine forward. That is the basic principle of jet propulsion, and very closely describes the operation of these basic turbojets.

[@oakmanrob]

Is there a measurement for the volume increase? Other than thrust I mean. Like x-volume enters an Orenda type 11 and y-volume exits?

[@eivilcow33]

Do I spy a thermal blanket on the nozzle? and if so, is that for keeping as much energy as possible in the flow rather than allowing it to cool before all the thrust possible is produced?

[@AgentJayZ]

+eivilcow33 I think it's more to protect the aluminum skin of the aircraft

[@bloggerpillai]

Now I like this JZ a helluvalot better than that other rich smug JZ. Hugely more entertaining as well.

[@AgentJayZ]

+Anil Pillai Please don't call me that. I am AgentJayZ. If the other dude ever finds out people are calling me his name, he could crush me like a bug. End of channel, and I'd probably end up owing him money... Thanks!

[@bloggerpillai]

+AgentJayZ lol, ok, AgentJayZ.

[@iaagg]

How much of the engine did you have go through to make sure it was safe to start and run? I looks very close to a new engine, pretty impressive I say.

[@AgentJayZ]

+roomba We connected a fuel line and battery leads. After checking oil level and attaching all necessary sensors, Bill gave me the signal, and I unleashed a flood of electrons. He gave it sparks and sprayed fuel into it...then Kaboom!... engine going!

[@iaagg]

AgentJayZ I guess you got your monies worth on that one. That is amazing.

[@hispanicuscorpus]

Can you make a video about thrust Vectoring

[@AgentJayZ]

Only what we work with in the shop.

[@BersekViking]

What is the future for this engine?

[@philzambo]

+BersekViking They become static generators