Sabre Jet Engine test run 2024
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- čas přidán 25. 08. 2024
- The Orenda 14 engine for a Sabre 6 has been in the shop for almost three years. The entire restoration process has been documented on the Patreon account. This is a compilation of clips from the two days of run in, calibration, adjustment, and performance testing.
The engine worked perfectly and it will soon be flying again.
Congratulations on a successful engine test, AgentJayZ! It means that I can now conclude an entry on my CPD (Continuing Professional Development) record, which I've carried over from one year to the next.
To maintain my professional registration in the UK, even in retirement, I am required to maintain a CPD record. My comments and contributions to your channel, along with my STEM and other activities, all count towards this.
Many thanks!
Some time back I saw the video where you mentioned the idiots who used your footage to proclaim that jet engines don't use fuel. I was amazed that anyone could be that stupid. I happened to see the referenced video and was further appalled by the total ignorance of that content provider.
I commented at the time that anyone who believed his claims should be prevented from driving, voting or breeding.
Thankyou for your content.
If I learned anything it's that test runs aren't cheap!
Every time I look at jet wash alley I imagine the whole shed coming loose and disappearing into the wild blue yonder😂
The exhaust field grass and woods look lovely this time of year.
Love that rut dug out behind the test stand. _Tim Allen grunt_
Jet wash gulley used to be jet wash alley.
It is nice to see you in charge of a cell start,
I have not seen that one before,
It was
I enjoyed the robot throttle level's sound,
I think it runs smooth,
Success but you knew that as you make them
You are a man to see
Nice
As always, interesting and informative.
Thank You Sir. Best Wishes to You and Your Family.
Sorry to hear about your 'tard problems. The videos are great, with your infectious enthusiasm for rebuilding these engines, and today, putting them through their paces. You take such care in explaining how your babies operate, your procedures, your opinions. I enjoy watching, tho I don't have a jet engine, or even a turbocharger.
Happy to see it run
Wikipedia says the difference between empty weight and gross weight of a Sabre 6 is 4000 pounds, specifically for "internal fuel" (with Max Take-Off Weight 3000 pounds above gross). If jet fuel is 6.7 pounds a gallon that's about 600 gallons, assuming ALL that 4000 pounds is fuel. Of course they could presumably add drop tanks for an airshow and just not drop them.
How Wonderful!!!
Beautiful machine.
It's great to see someone's keeping these old engines alive. I was always fascinated that you managed to get one of the very few orenda Iroquois engines in existence. What's the status of that engine? Do you have all the parts for the engine?
This engine is an addition to the population of powerplants for the Sabre.
The Iroquois project has been dormant for the last ten years, but I hope the owner renews his interest in restoring it.
@@AgentJayZare there many Sabre engines left? I thought you owned the Iroquois engine when you traded a bunch of World War II English aircraft parts for the Iroquois that was in the UK at the time? Is that not the case? Is the engine complete or is it missing a lot of parts
Turning Jet A into noise & fun 👍🏻😁😎
You don't seem to have been bothered recently by the "jet fuel is a hoax" brigade, AgentJayZ - and I haven't had a run in with any of them lately either. Why don't they realise that, if it was all a gigantic hoax, it would have been blown wide open (by their compressed air theory!) long since?
As you know from my comments in the past, I take it very personally, having been involved in combustion design during my career.
yay a new vid already
forgive me, as i have not watched ALL of your videos(yet) but i had a question, How many man hours dos it take to perform a full disassembly/inspection/overhaul on a turbine engine? i would image this can vary wildly from engine to engine, so ill let you pick which one if you would be so kind as to answer. thanks.
This one was in as-stored condition after decades of storage, and was restored to flying condition.
3200 hours, parts and testing extra.
What was that electro-magnetic sound coming from the engine during your close up as it was spooling down to zero?
That is a sound made by the fuel pumps at extremely low rpm.
Nice video Agent JayZ! Do you use a fresh batch/fill of lubricating oil for each engine you run in the test cell, or can you re-use it? Your videos really make me appreciate how much development effort has gone into the design and your efforts in rebuilding these amazing machines. Nice!
We always start with new oil, and when finished with it, we save it for things like the hydraulic test bench and the air dyno. That oil is over 30 bucks per litre (actually a quart).
Question:
When the engine is spooling down after shutdown, does that cause problems with wear on bearings and such with the engine still spinning and oil pressure being low, or is there an auxiliary system to keep oil pressure up until the engine is actually stopped?
Oil pressure is nothing more than an indication of the resistance to flow of oil... getting to where it does its job. The roller bearings in this engine will be fine on wind down even if their oil supply is totally stopped. It's not though. as long as the engine is turning, the pumps are pumping oil.
@@AgentJayZThanks!
I don’t know much about the finer points of gas turbine engines like this beast - always cool to learn more about how they do their thing.
You're everywhere, man.
nice to see your years of toil run; so, startup,, sure seemed to "hang" at 20% for a LONG time, then the video had a cut and all was well, what was that about?,, the power band really is so small,,tickling 7k at mil but a few percent lower and thrust drops WAY down. thanks for this, Jay
Very good eye. Start cart power was shut down a few seconds early, and it took a nudge of throttle to get the engine up to 38%, which is ground idle.
What kind of oil does it use...and how much ?
Synthetic gas turbine engine oil. We use Eastman 2380 or Mobil Jet 2. Max consumption is 1.5 pints per hour.
that would blow the snow off the drive for sure
Yes, that is what first came to mind on this 85 F day.
@@AgentJayZI see you speak sarcasm
The Russians developed one for snow removal…There is even one to de-ice train snow removal plows after their runs…
In the footage the thrust was displayed as not particularly stable. Is that _nai_ ("normal as is"), or an artifact from the "thrust measuring devices"?
Both!
I'm curious. Would the engine be expected to develop the same thrust when installed in the aircraft? It has that nice, big bellmouth on the stand, but the aircraft would be moving through clean air in flight. Would any of that make a difference?
Yes. The bellmouth is designed to remedy the loss of inlet flow due to the aircraft not moving.
@@AgentJayZ thank you, sir!
Read my mind. This is something I've always wondered over the last several years. The engine no longer has to suck as much air when it's moving into it, does that affect efficiency? Max thrust? I was literally going to ask the same question while watching this until I saw you asked it already :]
Installation losses are a fact of life. That was the speciality of one of my retired colleagues, who will be one of the little gang of R-R retirees (aka The Escape Committee) meeting up in a couple of hours time.
There are bound to be pressure losses in a typical aircraft installation, which may have a significant length of of intake duct, as compared to a bellmouth intake. This will obviously be the case with when the aircraft is stationary at the end of the runway and even into flight. However, at high speed, the intake ram effect will tend to negate the intake losses, if not more than compensate for them.
I know this engine is old and I know its very powerful. Its very noisy…. which I think is neat. But aren’t these engines dis allowed in anything but say airshow applications. As in, isn’t there a restriction on engines noise and it increasing advances towards less noisy and less noisy? And so, do you know who will apply this engine to a project?
Who? Have a look at the community this engine will live in. My video for you is about Oshkosh, and it's called Warbird Jets.
czcams.com/video/TXUWhD1H-v8/video.htmlsi=_Z-JqPlXwDtqQ3PX
Gawd....what happened to that poor inlet spike?....looks like it got run over by a truck.
That's the way it's supposed to look.
Have a look at my vid: Orenda 14 in the Sabre... made a long time ago.
Great to see it in action. Nice ceramic coating on the blades! I saw the EGT didn't change much; I assume it wasn't connected?
You were looking at the wrong gauge.
Geez if I could get a jet engine to run without fuel I'd be rich making free electricity.
I've mentioned that to them. They have no response.
Awesome and amazing. You're the Michael Jackson sex machine of jet engines. You know your trade well and plan your moon walks backwards. Thanks so much for the technos, you know how to make the arduous look happy and understandable. Appreciate your efforts. Dan USA :)
Hopefully, this is not a silly question, but when you refer to Gallons of fuel, is it US Gallons? I prefer litres myself, but the conversion is easy.
I talk gallons for my majority US viewers. I think in litres, so I often forget their are two different sixed gallons.
I'm a fallowr of ur videos... watching #GUNTUR city ..from INDIA 🇮🇳🇮🇳
Units EGT?
F
I was wondering that too, maybe a percentage of Tmax or 1/10th of degrees F (ex: 70 = 700F)? Since from what I read in a search a typical EGT ranges from 600F to 1000F I guess you could say either of my answers would look correct.
You are looking at the wrong gauge. Explained in the video.
My first response was incorrect. I'll fix that now.
@@AgentJayZ the reading was 70. Nobody looking at the screen during the test?
My mistake. We've tested two Orendas in less than a week, both with different instrumentation. This engine was using the aircraft readout in degrees C.
When using the computer screen, the units are degrees F.
Sorry about the mistake.