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@GRosa250

2 жыл бұрын

You said if you were to lose all oil pressure you would immediately power off the turbine in order to preserve the ability to freewheel the rotor and obviously autorotate to a landing. I’m curious if that’s a unique situation to an A Star or most turbine powered helicopters?

@PilotTeacher

2 жыл бұрын

@@GRosa250 its all dependent on the engine design and where the freewheel is. Because the Arriel engines have the freewheel unit built into the engine you need to preserve the oil to keep it lubricated and functioning. We tested it in the sim against pilots who had lost all oil pressure and you only have several minutes to get it on the ground if the engine stays running and pumps all the oil out. By shutting down the engine it helps prevent oil from being pumped out and buys you time before the freewheel seizes.

@GRosa250

2 жыл бұрын

@@PilotTeacher thank you for the explanation. I’m no expert but that doesn’t seem like the best design. It would be like if your car engine locked up then your wheels lock up. Even in a car an automatic transmission will still freewheel and a with a manual you could disengage the clutch or put it in neutral.

@PilotTeacher

2 жыл бұрын

@@GRosa250 yep im with you on that one, but they must have it done for a reason. Everything is a compromise in aviation and the reality of a total loss of oil fluid is almost none existent!

That’s cool that the final drive is not connected to the shaft but rather merely spins from hot, high pressure exhaust gasses. Loved learning more about it. 50k rpms down to 30k down to 6k down to a few hundred rpm at the main rotor.

@PilotTeacher

3 жыл бұрын

They truly are amazing pieces of engineering and thats why each engine is over $1M brand new!!

@caseykittel

3 жыл бұрын

@@PilotTeacher damn! Love it.

I was a jet mechanic for years and years. They are amazing peices of engineering. Thank you and be safe.

@PilotTeacher

2 жыл бұрын

Ron, the engineering in todays world blows my mind everyday!!

Thanks so much for the fascinating video. I’ve long been curious about how turboshaft engines work, but it’s hard to find good info. I’m going to see now what else you have on your channel. Excellent work man!!

@PilotTeacher

3 жыл бұрын

Im glad you found the video helpful and interesting! There are tonnes of great videos on my channel which I’m sure you will also love!

Awesome video! Thank you very much!

@PilotTeacher

2 жыл бұрын

Glad you enjoyed it!!

Very good explanation!

@PilotTeacher

Жыл бұрын

Glad you enjoyed it!

Great video sir. Thank you for your time and effort!

@PilotTeacher

3 жыл бұрын

Anytime David! Glad you enjoyed it!

Great video mate. Really informative.

@PilotTeacher

2 жыл бұрын

Glad you liked it!

Very fascinated with heli's. im amazed by how small the engine actually is. The AStar engines especially, much smaller than the Bell heli models

@PilotTeacher

3 жыл бұрын

For their size it is amazing how much power they produce. The Arriel engines used on the Astars are a great engine for sure. Be sure to check out the Entire Helicopter Guided Tour video too if you liked this one!

@francisconti9085

2 жыл бұрын

Ya faster flow from fewer moving parts moving 60%faster!! Way more torque once you get that geared down!

Thanks, great vid!!!

@PilotTeacher

10 ай бұрын

Thanks!!

Excellent video and explanation. 👍🏻👍🏻

@PilotTeacher

Ай бұрын

Thank you! 👍

Enjoyed watching that 👍🏽

@PilotTeacher

3 жыл бұрын

Thanks Nick! Glad you enjoyed it!

Really like it. 👍 Thanks.

@PilotTeacher

Жыл бұрын

Glad you like it!

Thanks! Great presentation! Very interesting indeed!

@PilotTeacher

Жыл бұрын

You’re welcome!

Thanks , extremely well explained in details

@PilotTeacher

Жыл бұрын

You’re welcome!

Beautiful

Well explained 👍🏻

@PilotTeacher

Жыл бұрын

Thanks!

Hey there! Yes, absolutely clear and easy explanation the powerplant of this helicopter. Antonov's 24 engine Ai-24 is much more complicated. The main difference at fuel control, on my aircraft pilot regulate fuel directly then propeller pitch variate automatically. Have nice day!

I really like the way you explain it, simple and understood

@PilotTeacher

2 жыл бұрын

Im glad you enjoyed it!

Excellent engineering explained.

@PilotTeacher

2 жыл бұрын

Thanks! I’m glad you enjoyed it!

VEEERY interessting video! Thank you very much, always something more to learn 👍😁😁

@PilotTeacher

2 жыл бұрын

Thanks Raphael! Glad you enjoyed it!!

Thanks.😀

Thank you for breaking it down for a layman like myself to understand. The engineering that went into this engine is mind-boggling. The reduction gearbox is incredible. I'm also blown away by the main rotor rpm if I remember correctly around 370rpm! Thanks again and safe flying.

@PilotTeacher

Жыл бұрын

Yes they are remarkable! Normal flight rpm for the Astar is 390 +4/-5

Beautiful presentation!!! nice information about gas turbine engine 👏👏👍!!!I realy enjoy it!!!! excellent!!

@PilotTeacher

2 жыл бұрын

Glad you enjoyed it!

Excellent & marvellous explanation of a turbo shaft engine , how it works , by a true Engineer...👌.....💞....🌹

@PilotTeacher

Жыл бұрын

Thanks Muli! Glad you enjoyed it!

Fantastic! Best description of Arriel engines I have heard. Your explanations fit my ears and understanding perfectly! Thanks for doing these videos! Keep up the great work. Perhaps a video on Single vs Dual Hydraulics and how they work? Electrical systems?

@PilotTeacher

2 жыл бұрын

Thanks Marnie!! Check out my video on the H125 as that has dual hydraulics.

The best lesson ever

@PilotTeacher

Жыл бұрын

Thanks Geoffrey! Im glad you enjoyed it!

Cool video ❤️

@PilotTeacher

2 жыл бұрын

Thanks!

Amazing job, seems like I am gonna ace my type rating ;)

@PilotTeacher

2 жыл бұрын

Glad it could help!

Subscribed!🚁👍

One of my all time favorite aircraft. Quiet, very powerful, great cabin heating/air conditioning with the optional electric a/c unit. Excellent VFR aircraft 👍🇺🇸🦜🦜

@PilotTeacher

6 ай бұрын

There was a few times I wished it had AC! No ac in these workhorses!

Awesome! Loved the video. Currently studying the AS350B2 for my new job and found this video very helpful. Thank you for your time. Fly safe

@PilotTeacher

3 жыл бұрын

Glad you liked it!! This book from Phil Croucher really helped me on my endorsement: The AS350/355 Book at Amazon: amzn.to/3mChUbd

@leoneugene7456

3 жыл бұрын

Bravo! I love your teaching on this beautiful complex engine

@PilotTeacher

3 жыл бұрын

@@leoneugene7456 thanks buddy!!

@maxxawesome7412

3 жыл бұрын

I’m getting ready for the AStar as well. This is way better than the book diagrams. I’ll have to see if you’ve got any other helpful videos. Thanks for putting this together!

@PilotTeacher

3 жыл бұрын

@@maxxawesome7412 You will live the Astar! Ive got lots of videos and Playlists - Go take a look!

Great video. Nice to see people interested in the engines. Would be nice to see the explanation of the injection wheel after the start injectors and ignitors are off. That’s where the Arriel engine is pretty unique. And not to pick but 55-56k rpm is a bit too high for the gas generator speed. 100% is 52,100 on the 1D1 and free turbine 100% is 39,158 that’s reduced down to 6000 output speed.

@PilotTeacher

8 ай бұрын

Thats why I just fly them and not design them hahaha

That was very educationally informative, simplified, clear and concise. You almost certified me as an aircraft mechanic. 👍👍👍👍👍

@PilotTeacher

10 ай бұрын

Glad you enjoyed it!

Very tidy engine. Amazing power from something that size. Thanks for the explanation.

@PilotTeacher

3 жыл бұрын

Yeah its crazy how much power they produce! We just need the next leap in powerplant design!

I will probably never be any kind of pilot but have a keen intrest in aircraft and avionics especially helicopters. Thanks for that teaching, I lapped it up like a thristy animal looking for water. Thanks again.

@PilotTeacher

Жыл бұрын

Theres lots more videos for you lap up Harold - Enjoy!

great content.

@PilotTeacher

2 жыл бұрын

Thanks!

incredible... absolutely a very good faculty, after watching your explanations on the subject, I am really cursing my fate that why I didn't" have a teacher like you.

@PilotTeacher

Жыл бұрын

Thanks for your kind words Devesh! I'm glad I could provide some information you found helpful! Enjoy the rest of the videos!

Great video! CFII/Tour Pilot moving to turbines soon so extra thanks to you brother!!!

@PilotTeacher

2 жыл бұрын

Glad to help!

I have my first check ride tomorrow(around 20 hours), and this video was great for covering everything I need to know(for my level) about turbine engines. Thank you

@PilotTeacher

2 жыл бұрын

Glad you found it helpful!

@absolutely1337

2 жыл бұрын

Ooof. Not sure how I feel that you fly via KZread knowledge.

Best 🚁 channel!

@PilotTeacher

2 жыл бұрын

Thanks Hugo!!

Very interesting

@PilotTeacher

2 жыл бұрын

I think so too!

Great explanation. I'm surprised how compact the actual engine is.

@PilotTeacher

2 жыл бұрын

Small form factor but lots of power!!

Worked on A Stars in the Gulf of Mexico but mainly in Alaska. Very dependable aircraft , yes these engines are great simple and easy to work on . These helicopters are considered third world helicopters, because you can work on them in the middle of nowhere. You can change an engine easy , takes no time at all same with the main transmission. As long as you got something to lift it .

Learning the Helicopter Gas Turbine Engine. @

Great video! You explained these parts really well. Is the power output shaft always connected to main rotor and tail rotor or is there some kind of clutch system to allow engine to run without rotors spinning?

@PilotTeacher

2 жыл бұрын

Try this buddy: Why Don't Helicopter Rotors Turn As Soon As It's Engine Starts? kzread.info/dash/bejne/eqB81cFpd5mplsY.html

@boomdawg56

Жыл бұрын

On the Arriel 1D1, there is a free wheel unit mounted to the drive flange of the engine power shaft. The free wheel shaft drives the transmission drifeshaft and runs coaxially through the power shaft of the engine to the rear of the engine where it is connected to the tail rotor driveshaft.

very interesting and well explained. Thanks alot. I have a question though. Why isn't there a starter gen and igniter on the other engine. Or is there a link from the right engine to the left?

@PilotTeacher

2 жыл бұрын

There is only a single engine on this helicopter. With helicopters that have two engines, each engine will have its own starter generator.

The air after the 2nd stage centrifugal does Not speed up, it slows down in the diffuser ducting accomplishing pressure recovery into the combustion camber.

Tanks for the video, enjoy it, nice explanation and walkthrough. Curious about what power percentage you are using during cruise as you stated it uses about 180 litres an hour. I have read its BSFC, but it is only stated for max power, not cruise power. My understanding is a turbine engine is less efficient at part throttle. Thanks.

@PilotTeacher

2 жыл бұрын

In the Astar I normally cruise at whatever speed 96% NG gives me.

Your explanation of the fuel control unit references the upper and lower linkage but contradicts your telling and showing of the FFCL and Collective inputs from the cockpit.

@PilotTeacher

2 жыл бұрын

Yeah sometimes I get things twisted in the moment of trying to explain and point. Its a skill i'm trying to refine!

Great video & clear explanation! Can you quickly explain where the governor is in relation to the throttle please? Is the governor a piece of hardware?

@PilotTeacher

2 жыл бұрын

Ill try and answer it as best I can as our engineers keep us Peasant Pilots well away from their engines! As far as I’m aware on the mechanical fuel control engines the governor is part of the fuel metering system on the engine. It monitors the position of the Collective via a cable and adjusts the fuel to suit. Its all based on air pressure within the engine and rotating fly weights for the governing. On the digitally controlled engines the engine control unit monitors the power turbine speed and main rotor rpm and adjusts the fuel flow to suit to keep the NR dead on! Thats about as basic as I can keep it. I hope that helps! I could be way off but I’m out in the field with no engineers to ask or training manuals to look at!

@EyeProductionsAus

2 жыл бұрын

@@PilotTeacher Thank you very much for that. I was looking for a clear explanation on how low rotor RPM happens and I understood it from your explanation about the relation between engine & rotor RPM. Thank you & fly safe.

You are my teacher

@PilotTeacher

3 жыл бұрын

My pleasure Arun!!

3:30 The velocity goes down since there is a resistance which make the pressure go up.

@PilotTeacher

2 жыл бұрын

Pretty cool stuff hey!!

@dtiydr

2 жыл бұрын

@@PilotTeacher Science is the shit!

what about helicopters that have two engines? like the twin huey, do they have two power output shafts? and one other thing, in a Chinook, or CH 146, where they have rotors front and back, does the rear arrangement drive the front rotors through gearing? Thank you, enjoyed the video, love helicopters

@PilotTeacher

Жыл бұрын

Each engine drives an output shaft that feeds into a main transmission. This transmission then drives the rotor head/s. You can see the engines and transmissions in these videos: AS355 Twinstar Helicopter: Guided Tour With Engine Start & Fly Away kzread.info/dash/bejne/foSNqKiLhafem84.html Search & Rescue Pilot - Everything You Ever Wanted To Know!! kzread.info/dash/bejne/haJszcxuc8W_hso.html EMS Pilot - Everything You Ever Wanted To Know!! kzread.info/dash/bejne/imiKj5t6nrbgqKw.html Hope these help!

Wow that thing is small, thought first that was the freeturbine section at first and compressor section was inside the heli

@PilotTeacher

2 жыл бұрын

Yes they are small for the amount of power they produce! Very simple to look at but very precise and complex in their design!

Hy sir how are you explain very well But i have one question that when pilot start the engine the starter can turn the blades also or the blades turn by power turbine lonely?

@PilotTeacher

Жыл бұрын

Power turbine only.

Just a quick comment. After the compressors, the temperature and pressure are indeed increased. Typically, the axial velocity through the component is maintained and the Mach number goes down as the temperature goes up. So, the velocity of the air is typically not increased.

@PilotTeacher

Жыл бұрын

Cool! Thanks for the info. These engines always blow my mind and the exact engineering behind them is incredible! I was going off the pilot's 'Dumbed down' version training manual!

@indepviewpt

Жыл бұрын

@@PilotTeacher It's all good, for sure. I have spent too much time "inside" the engine. But, I am an aviation guy at heart. My comment is only intended in the most positive sense. Thanks very much for your videos.

@PilotTeacher

Жыл бұрын

@@indepviewpt Thanks for your input and appreciation. The more accurate the information I can get the better!

14:00 Pro tip: if you have low frequency wind noise like here, just pass the audio through high-pass filter (e.g. 80 Hz high-pass filter would cut low frequency noise below 80 Hz off). Note that most filters are not hard so they might still leak low frequency through. If you cannot adjust the effect (e.g. -12 dB/octave vs -24 dB/octave), you can just apply the same filter multiple times. If you do that in post production while the audio is in digital format, applying the same high-pass filter shouldn't cause extra noise but just make the filter limit harder.

@PilotTeacher

2 жыл бұрын

Ahhh great tips Mikko! Where were you when I needed your advice 18 months ago hahaha!

@PilotTeacher

2 жыл бұрын

I spent some good money on better audio and video equipment this year. Alot of the videos shot were unusable because of the wind noise!

@MikkoRantalainen

2 жыл бұрын

@@PilotTeacher As long as you don't clip (get to 0 dB for digital systems), software noise filtering can do absolute magic these days. You'll be limited by the noise floor of your audio gear if you have to lower the limit due the wind to avoid clipping. Of course, having a high quality windshield reduces wind noise and you don't need to reduce the mic level so much which results in better noise floor which in turn improves final audio quality.

@PilotTeacher

2 жыл бұрын

@@MikkoRantalainen awesome! Thanks for the tips. I went with Rode audio and their wind muffs/deadcats. Looking forward to improving the production quality!

The helicopters I designed had the hellfire missles, and a seperate Avionics Helicopter I designed was the Chinook helilicopter. I designed and named from the Chinook king salmon minnows coming down the White Mountain fish river every fall.

What are the 2 pipes protruding behind the exhaust pipe? Someone told me they were ventilation and for when there is excessive oil.

@PilotTeacher

Жыл бұрын

Something like like that.

@Wordenofthenorth

6 ай бұрын

The two pipes out the back are an accessory gearbox/oil reservoir vent, and the rear bearing vent

The engine on my moped in the late -80 was pretty much bigger then that one, dam they are efficient!

@PilotTeacher

2 жыл бұрын

Oh yes!! We just now need the next big leap in engine technology!

@dtiydr

2 жыл бұрын

@@PilotTeacher The real developments is in the commercial airplane engines, state of the art it is in the A380 which have huge compression rates and thus more efficient. Helis doesn't seem to be put as much money into since I guess the latest ones are very good as they are and small. The only thing that is left is to go all electric but then we need another power source since the batteries today are to heavy for a helicopter as in the video. Or we need some totally new very lightweight extremely power dense battery then fun will begin.

@PilotTeacher

2 жыл бұрын

@@dtiydr you are correct! We need the next jump from piston to turbine to …….

When you also fly in the rain, how does the engines get rid of the water that passes through the compressor from blowing the flames out in the combustor?

@PilotTeacher

2 жыл бұрын

The amount of water that makes it into the combustion chamber is almost zero. The inlet barrier filter, then the temperature increase while in the compressor pretty much vaporizes any moisture. Any remaining moisture going into the combustion chamber will be so insignificant that it will not effect the fireball. The only time a problem occurs is if a large lump of snow is ingested and blocks the air intake. This would cause a flame out.

Thank you so much ! I missed your first name to address you, apologies. Question for you: Why wear a helmet when its hot and uncomfortable? Why are headphones with a cap not enough?

@PilotTeacher

2 жыл бұрын

I wear both. Helmets provide much better head protection in the event of a hard landing but headsets provide less strain on your neck and shoulders.

Surprised there's a direct mechanical connection between the collective and the fuel control. I would have expected the engine to be governor-driven (via the fuel control system) to automatically maintain set RPM regardless of collective setting. Interesting.

@PilotTeacher

2 жыл бұрын

The fuel control does have a govenor that trys to maintain the rpm around 390 when in flight and it works pretty well. From what I understand the governor is set by the fuel control lever that is used to start the engine and then is never touched in flight unless you have a governor failure/malfunction. Then the power is adjusted by the collective as I move it up and down. The new H125 has a full digital engine control system with an automatic backup governor system.

@francisconti9085

2 жыл бұрын

@@PilotTeacher Mechanical "CORRELATOR" does the majority of the compensation for RPM droop..why it sometimes is calendar "droop compensator"🤣👍..the power turbine RPM/governor response fine tunes the gas producer "throttle" In a heli you want to keep the rotor RPM in the green arc, or ""DROOP" can turn into RAPID UNRECOVERABLE DECAY..leading to "DROP...🤯😱💥☠" Helicopters are like figureskating..whirly-twirley balanced deftly upon edges. Or like the Harlem Globetrotters act! Lol "Keep the power-pedal skid low" and may you find all the "tail" you need!(that's tail rotor authority!)🚁

What about fadec..and oil pressure

@PilotTeacher

9 ай бұрын

Talk to the aircrafts designers for that one!

How is the engine lubricated, where does the oil go? Also is it the same oil that's used for engine, transmission and cooling?

@PilotTeacher

2 жыл бұрын

Transmission has its own oil stored in its casing. The engine oil is pumped around the engine using an engine driven oil pump. It then drains via gravity and is then returned to the reservoir by scavenge pumps.

@LanaaAmor

2 жыл бұрын

@@PilotTeacher but what parts does it lubricate inside the engine?

@PilotTeacher

2 жыл бұрын

@@LanaaAmor bearings.

Hi what is that little silver tubing pipe that runs underneath the back of your helicopters exhaust pipe for mate?

@PilotTeacher

3 жыл бұрын

Hi Robert, I believe it has something to do with the oil system but I will confirm with my engineer when I see him tomorrow and get back to you...

@PilotTeacher

3 жыл бұрын

Hey Robert, be sure to check out my latest video coming out on Tuesday Jan 12th - It might interest you ;)

@robertmacduff5289

3 жыл бұрын

@@PilotTeacher Hi and thank you for your video's and you are doing great my friend.

Hi, is there a clutch in the turbine?

@PilotTeacher

3 жыл бұрын

Hi C R. Check out his video to help answer your question…. kzread.info/dash/bejne/eqB81cFpd5mplsY.html

What kind of fuel that helicopter use and what is the octane

@PilotTeacher

3 жыл бұрын

Hi Stephen. The gas turbine engines in helicopters use a fuel called Jet A. Its similar to diesel and has an octane of around 15.

Hello Rick, I'm searching for an Arriel 1D1 used with part-time hours remaining. Just taking a shot to ask if you'd have anyone you could refer me to?

@PilotTeacher

2 жыл бұрын

Sorry Ben but I have absolutely no idea with the maintenance side of the industry. Maybe call around a few companies and see if you can get any leads that way.

@benbobic7594

2 жыл бұрын

@@PilotTeacher No worries, thought I'd try. Calling and called companies. Thank you for the quick reply.

and is the astar safe? would you say the b2 or b3 is safer?

@PilotTeacher

3 жыл бұрын

The Astar is super safe. Its the one of the reasons why its the worlds most popular utility helicopter. The B3, especially the new B3e/H125 is definitely safer due to it’s increased power, digital engine control, puncture resistant fuel tank, crash attenuating seats and dual hydraulics, all of which the B2 does not have.

Great explanation. However, let’s take it from this point. Your turbine is up to speed but your rotor blades are still stationary, how do you engage the rotor blades? Your throttle is on the collective. You are going to use the collective and throttle to raise or lift the copter. What device engages the rotors and keeps them rotating while you are in, what I would call neutral? Thank you, take care and stay healthy.

@PilotTeacher

3 жыл бұрын

Hi Vincent! This is a great question. Ill take my camera into work tomorrow and film an explanation for you. Its quite a simple concept but showing you will be even better! Stay tuned!

@vincentwesolowski459

3 жыл бұрын

@@PilotTeacher thank you very much.

@PilotTeacher

3 жыл бұрын

Vincent be sure to keep an eye out for Tuesdays video! ;)

@vincentwesolowski459

3 жыл бұрын

@@PilotTeacher I will and thank you very much.

@joelmitchell1786

8 ай бұрын

The other FCU lever below the throttle is called the anticipator. Through the reduction in sensed rpm gain or drop of the free turbine will increase or decrease the gas generator rpm to maintain rotor speed and power requirements of the anticipator set point.

does that 6k RPM shaft to directly to BOTH the main gearbox AND the tail rotor gearbox?

@PilotTeacher

Жыл бұрын

On the Astar, yes. It comes out the front to connect to the main transmission and out of the rear to the tail rotor gearbox. Each engine and helicopter design can vary. Most have a single output shaft from the engine that feeds the main transmission which then feeds the main and tail rotor systems along with any ancillary equipment.

@stachowi

Жыл бұрын

@@PilotTeacher what happens if anything along that powertrain seizes, will that cause the rotor RPM to decay?

@PilotTeacher

Жыл бұрын

@@stachowi the helicopter becomes a lawn dart!

@stachowi

Жыл бұрын

@@PilotTeacher gotcha, love your channel...

@PilotTeacher

Жыл бұрын

@@stachowi thanks buddy. All helicopters have a freewheeling unit that separates the engine/s from the drivetrain to allow the rotor systems to rotate freely and complete an autorotation but if the transmission seizes you’re hooped.

🤔...🤯40KRPM! WOW!! I know the Lycoming T-53 family of the Bell UH-1Huey..a medium lift platform..a bit bigger engine..lol it runs power turbine @ 25K RPM for 6.6K RPM output..all the RPMs get turned into torque like first gear in a car...weak fast turning gets turned into slow STRONG TORQUE by the gear ratio/mechanical advantage exchange.. that 40,000 RPM POWER TURBINE IS A LOT OF ENERGY! 60% more RPM, 15K MORE RPM! "GREAT SCOT!!!" Well this VERIFIED MY OWN QUESTION & ANSWER! It clearly validated my visual based supposition that the parts were so small so they could move so fast, & GUESTIMATING GEAR RATIOS in the initial reduction gearing.. therefore little engine WAS a "ROCKET IN A BOTTLE!" That's one fast digit spinner, sure will go SCORCH-POP if oil gets low! SO YES, 15 THOUSAND MORE RPM THAN THE POWER TURBINE IN THE HUEY! 60% MORE RPMs.. I love the simplicity of that engine, less to go wrong, looks like RC helicopter turbine engine of today! I also like the apparent cleaner flow patterning the combustion chamber, wonder what flow speed is..in some engines it's about 400MPH/644kmh. The A-Star is a beautiful & simply effective bird..I have always admired! Great video, thanks!

❤❤❤❤❤❤❤👍👍👍👍👍👍👍

Your description of the fuel system was incomplete. The fuel nozzles do not supply fuel once the engine is running. That function is taken over by the fling wheel. Also the glaring contradiction between the anticipator and throttle cable descriptions and the video.

@PilotTeacher

4 ай бұрын

Never heard of a fling wheel!

@eds6889

4 ай бұрын

@@PilotTeacher also known as the injection wheel.

@anaveragedadsworkshop

4 ай бұрын

@@eds6889 Still never seen one in any of the gas turbine manuals for any of the helicopters Ive flown.

@eds6889

4 ай бұрын

@@anaveragedadsworkshop a quick talk with your airbus AME will shed some light on the differences between the starting fuel system and the operating fuel system.

@eds6889

4 ай бұрын

@@anaveragedadsworkshop also we are only talking about the Arriel engine here.

Greetings friend ! How much it costs to buy an engine like this one or similar?

@PilotTeacher

3 жыл бұрын

My engineers tell me its around $1.3m brand new overhauled from Safran and then used engines start from around $500K and up depending on how much time they have on them.

@altergarage1347

3 жыл бұрын

@@PilotTeacher thanks for the quick response my frien. i live in Greece and i own a functional with all the start up instruments helicopter engine from the vietnam war. i m looking forward to sell it but i dont know where and in what price

@altergarage1347

3 жыл бұрын

​@@PilotTeacher Also can i send it to you via instagram?? so you can tell me your oppinion about it? I dont even know what model it is :P , my father got it from a crazy friend of him who wanted to build a boat with this perticular engine along time ago and now its been siting for years...

@PilotTeacher

3 жыл бұрын

@@altergarage1347 an engine from the Vietnam era will never be able to be used in a helicopter today unless its been stored correctly and has all the paperwork for its life. It could be used for a hobby project but the noise and cost to run generally make them not an option.

@altergarage1347

3 жыл бұрын

@@PilotTeacher thank you my friend

I see in the main rotor transmission there is a planetary great system .why is that ?

@PilotTeacher

3 жыл бұрын

Hi Sherwin, The planetary gear system used in the transmission is the strongest and smallest way to efficiently reduce the rotational speed between the drive shaft from the engine and the main rotor mast. The engine drive shaft comes into the main transmission at 6125 rpm which feeds onto a ring gear. This reduces the rpm down to 1707 rpm. This ring gear then drives the planetary gear system which then further reduces the rpm to 394 rpm, which is the what the main rotor turns at during flight. Check out this video that shows it perfectly - Although I have no idea what he is saying! kzread.info/dash/bejne/lYWEltOOYLi3iJM.html Hope this helps!

@sherwinsalvatori6997

3 жыл бұрын

@@PilotTeacher thanks

@PilotTeacher

3 жыл бұрын

@@sherwinsalvatori6997 Anytime!!

Hi Mr. Pilot Teacher. I would love to see such a machine running live in front of me. I would also like to ask you a question; Is the running costs about $1000 an hour, TBO's included? I know, my dad use to tell me; I am a cheapskate!. He use to say: If you ask the price, you can't afford it!!!

@PilotTeacher

2 жыл бұрын

$1000 is cheap. This goes out the door for around $2600 per hour.

@nicmost3044

2 жыл бұрын

@@PilotTeacher Yeah. You right Mr. Teacher. I lost track of time and prices. I would however love to go out for a lesson in Bell Jetranger 206, but I think that might be over a $1000ph... But I don't care, You only live once. Twice for me as a pilot when I survived a secondary stall in a C152.

With all these multi million dollar aircraft. I dont understand why not use some little cameras and a monitor in the cockpit. For my experimental I am installing one in the engine compartment, one looking beneath, one rearward over the tail boom and also on on each of the main rotors. they are so cheap and use next to no power.

@PilotTeacher

Жыл бұрын

To look for what?

@chippyjohn1

Жыл бұрын

@@PilotTeacher Wrote a detailed reply and lost it. You said if you have smoke you would have to circle around to check it. Having cameras you can watch every aspect of the aircraft. So many aircraft have come down because pilots could not see what was wrong. I can mount 1000fps cameras on my rotors and watch the motion, damage, ice formation, tracking. Engine compartment for fuel, oil, coolant levels, Smoke, fire. Looking aft and in fuselage to look at linkages. If the landing gear does not go down you can have a camera looking at them and also showing how close you are to the ground. a camera looking down for long lining. So many possibilities.

@PilotTeacher

Жыл бұрын

@@chippyjohn1 extra things that add weight, expense and more to get approved and then fix. For most helicopters they are not high on the priority list otherwise the manufacturers would have them fitted.

@chippyjohn1

Жыл бұрын

@@PilotTeacher It also makes for a very cheap and simple video recorder in case of a crash. You can remote locate the memory stick to a position such as the tail. SSD are such large capacity now compared to the old black boxes they used to have.

@PilotTeacher

Жыл бұрын

@@chippyjohn1 they do have their place for sure but there is a reason why the industry hasn’t included them. What that/those reasons are is anybody’s guess.

Use gear jealousy is cruel as d rage of a man and grave. Doe thou bringeth many gift he will not spear any ransom or in d day of vengeance.

@PilotTeacher

2 жыл бұрын

I have no idea what you said!

@joelezekielbruce1060

2 жыл бұрын

@@PilotTeacher Japan don't speak English proverbs book of Ezekiel he wrote the psalm. How many tons of fuel a chopper normally Carry.?

@joelezekielbruce1060

2 жыл бұрын

@@PilotTeacher y or give reason.

56,000 rpm? Yeah I'm never going to get on a helicopter again. That sounds horrifying

@PilotTeacher

2 жыл бұрын

Not at all. Its one of the most dependable engines in the world!!

@timobatana6705

2 жыл бұрын

@@PilotTeacher it's amazing but I just idk something spinning that fast makes me nervous

@PilotTeacher

2 жыл бұрын

@@timobatana6705 if your car has a turbocharger than thats spinning the same!!

@ghostrider-be9ek

2 жыл бұрын

@@PilotTeacher small turbos in smaller cars sping 100,000rpms +

@PilotTeacher

2 жыл бұрын

@@ghostrider-be9ek 😮

This mic rubbing is a nightmare!

@PilotTeacher

2 жыл бұрын

I hear you LT!! The sound has been my biggest nightmare on these videos. Either its rubbing or its windy!! I keep trying new methods and hopefully I find the solution!

@Hasunori

2 жыл бұрын

@@PilotTeacher No worries. From what I see, the mic is flapping around with the clothing. And also try getting a „dead cat” for a mic. It works miracles!

@PilotTeacher

2 жыл бұрын

@@Hasunori yeah this was one of my early videos. Learning lots and always trying new ways to try and get the video and audio better. Its my pet peeve when I’m editing it hahaha

This guy goes on about this engine using fuel, but fails to point out where the fuel is stored These helicopters don't require fuel to run, they use air instead

@PilotTeacher

Жыл бұрын

Trust me buddy when the fuel runs out the engine stops real quick! The 540 litre fuel tank is mounted under the engine deck between the two cargo compartments.

@jordanblake574

Жыл бұрын

@@PilotTeacher can you do a video on the fuel tank location, 540liters is huge

@PilotTeacher

Жыл бұрын

@@jordanblake574 hey Jordan it is directly under the transmission between the back seats, the two side cargo pods and the tail boom connection.