thanks! that's high praise coming from a real developer! MSFS has come so far and the graphics are just amazing. It's an awesome product and you should be proud of how good it's become.
by far this for me is the most favorite educational video about H-60 helicopter transmission/power-plant operation. thank you so much for your thorough explanation
Does this 3D CAD software you are using have a model library? Are you having to design all those gears and turbine parts from scratch or can you drag and drop prebuilt models onto the drawing screen.
Autodesk Fusion lets you import almost any CAD format, so if you can find it, you can likely bring it into the software. The only library it has, built in, is for common hardware; they links directly to the McMaster-Carr website and I can import any 3d file they make available. If you see hardware, like nuts, bolts, bearings... things like that, in my videos, these likely came from McMaster-Carr. Everything else I modeled on my own. The gears... those would be tough to model... Are made with an add on; I just enter the parameters (module, helix angle, width, backlash...etc) and the computer generates the gear. Thanks for watching!
One suggestion. This is Part 3, so it’s confusing when you talk about parts 1, 2, & 3. My first thought was to suggest calling the sub parts sections, but I think TH-cam calls them chapters, and I think you should go with that for the enjoyment of the viewers. Edit: Now I see what you mean by parts. You have multiple chapters that you group into parts. You should call those groups sections, to be consistent with books and long documents. Hope these comments help; you’re doing amazing stuff here. I’ve got a half hour in a 172 from years ago, and none in helicopters, but oh my did I love the DOS version of Comanche. Thrustmaster stick, throttle, and pedals. This is explains so much I’ve wondered about helicopters for years and never found a satisfactory explanation of.
Thank you for sharing! A small comment though, for the animation: the T-700 engine has an opposite rotation between compresor and power turbine. The video shows both shafts, outer compressor shaft and inner power turbine shaft rotating in the shame direction. Just a comment!!
" i could have done the math - its just 3D geometry... but it was easier to just measure it in CAD" that is how I roll..... ;P (because I cannot do the math) another beautifully constructed video animation series. & thankyou for the CAD behind the scenes narration, very informative super envious of your skillset, I was thinking about modelling & animating the CH47 flight controls, but by the time i got to the second staging unit my brain was melting.... those Vertol engineers were some mad-scientists.
Hi my dear friend .Thank you very much for your beautiful sharing . It is very inspiring and interest . It is possible maybe to get complete about the gears and Rotor Blades and engine infos ore how is possible in CAD to become it . Can You help in this case when is possible for You of course . But first I Thank you very much for your beautiful sharing . Sincerely .👍
absolutely... As I make the chapters in this playlist I'll include details about the CAD. When I started posting these animations, I didn't do that, and it was such a frequent viewer request that I started including those details. I may have already answered your question on the gears and the parameters. Please look at the first video in this playlist. The title of the playlist is.... Building a 3D model of a Helicopter Here is a link: th-cam.com/play/PLhRKWwg17yplaW2XyvJbqKbVcxd1EkscY.html&si=ad-0DooSqnqFmbPb I'll get to an explanation of the blades soon. Thanks for watching.
It must work... The gear sizes and speeds, used in the animation, came from actual data from the Blackhawk. In Ray Leoni's book on the Blackhawk he says they had to meet an Army requirement to run for 60 minutes with no oil in the gearbox. (60 was a test requirement to show a 30 operational run-dry capability) Those are some robust and proven gears!
One more comment. Can you do an explanation of mast-bumping in the future? You’ve got three- and four-blade mechanisms mostly built, and they would be great for showing why these designs don’t suffer from mast-bumping while most (all?) two-blade helicopters do. I know the theory, but I’ve only seen cartoon-like 2D drawings of how they cut the mast, and I’ll bet those aren’t that accurate.
mast-bumping is more related to teetering-head rotor mast assemblies, like those in a Robinson R22/44 or Bell B206 or B205/UH-1 Huey. At least let him finish the articulated UH-60 rotor assembly before we get into secondary effects/mechanical design failures where effects like ground resonance etc might also be addressed. ;)
@@the_apache_pit My basic understanding is that all two-bladed rotors are inherently teetering, and anything with more blades can’t teeter. But it sounds like that’s not quite right?
here's a fun fact... both the AW609 and the MV-22 Osprey (tiltrotors) have three-blade teetering designs. They have a hub spring, so there is some additional effective hinge offset compared to the Bell and Robinson teeters, but they are still teetering designs. Great comments... I'm thinking about doing a teeter side-by-side with the fully-articulated. That would be a cool video.
Is the startup scenario described correctly? Sure, can get the gas generator going with aux power as an input (electric motor and/or apu?) but as soon as fuel is introduced, the power turbines and thus the rotar blades had best be moving lest that back-half of your engines melt. But maybe I'm mistaken and there's sufficient cooling even with the power turbines locked in place. But I will say, looks like the rotors start moving during engine runup (seen in person and vids) th-cam.com/video/B_p3_9si5D4/w-d-xo.html (not a heli setup but close enough).
They are only operated at idle when the Np section is locked. And the pilot monitors TGT limits when operating like that. I did a lot of my helicopter flying onboard ship and starting this way is more of the norm than the exception. I'm not aware that any special cooling provisions are built in for the aircraft that do this. One concern though is blade rub... Meaning when the blades are heated in the exhaust without rotation (cooling) they grow... I've seen mitigating procedures for subsequent starts, but never for a cold start.
Here's a video showing a brake start. You can hear the pilots say "brake is holding" after they start each engine. With both engines on line, they then release the brake and only then do the rotors spin. th-cam.com/video/l0B5joST1mQ/w-d-xo.htmlsi=jRtDjyG--L6lLTAZ
I'm a developer for MSFS 2020 and 2024 and helicopters is one of the aircraft I model and setup most often. This is really impressive work my friend.
thanks! that's high praise coming from a real developer! MSFS has come so far and the graphics are just amazing. It's an awesome product and you should be proud of how good it's become.
what helicopters have you developed? I exclusively fly Heli's in MSFS2020 in VR!
@@stachowi The 2 helicopters I've worked on are coming out for 2024, namely the Chinook and the Skycrane from Blackbird Simulations.
@@cptairwolf damn, the skycrane is in a lot of the trailers! amazing work.
by far this for me is the most favorite educational video about H-60 helicopter transmission/power-plant operation.
thank you so much for your thorough explanation
thanks! I did a lot of work to put this together... I really appreciate hearing this feedback! Thanks for watching and supporting this channel.
As always, your CAD work is outstanding, and each video has much improved my understanding of it all. Cheers!
Absolutely incredible the depth at which you are modeling individual parts...Big kudos, sir. Glad I found your channel!
Awesome! Thanks for watching.
I just spent 21 days on a UH-60 Lima and a HH-60-G as crew member (firefighter)at the fires in Northern California
I've been reading how crazy things are out west. Thanks for doing what you do!
Does this 3D CAD software you are using have a model library? Are you having to design all those gears and turbine parts from scratch or can you drag and drop prebuilt models onto the drawing screen.
Autodesk Fusion lets you import almost any CAD format, so if you can find it, you can likely bring it into the software. The only library it has, built in, is for common hardware; they links directly to the McMaster-Carr website and I can import any 3d file they make available. If you see hardware, like nuts, bolts, bearings... things like that, in my videos, these likely came from McMaster-Carr. Everything else I modeled on my own. The gears... those would be tough to model... Are made with an add on; I just enter the parameters (module, helix angle, width, backlash...etc) and the computer generates the gear. Thanks for watching!
One suggestion. This is Part 3, so it’s confusing when you talk about parts 1, 2, & 3. My first thought was to suggest calling the sub parts sections, but I think TH-cam calls them chapters, and I think you should go with that for the enjoyment of the viewers.
Edit: Now I see what you mean by parts. You have multiple chapters that you group into parts. You should call those groups sections, to be consistent with books and long documents.
Hope these comments help; you’re doing amazing stuff here. I’ve got a half hour in a 172 from years ago, and none in helicopters, but oh my did I love the DOS version of Comanche. Thrustmaster stick, throttle, and pedals. This is explains so much I’ve wondered about helicopters for years and never found a satisfactory explanation of.
a little bit of peanut picking from poo...
but sometimes terminology can cause confusion - especially to the nutters like me.... ;)
Thank you for sharing! A small comment though, for the animation: the T-700 engine has an opposite rotation between compresor and power turbine. The video shows both shafts, outer compressor shaft and inner power turbine shaft rotating in the shame direction. Just a comment!!
Fantastic modeling and superb explanation!
" i could have done the math - its just 3D geometry... but it was easier to just measure it in CAD"
that is how I roll..... ;P (because I cannot do the math)
another beautifully constructed video animation series.
& thankyou for the CAD behind the scenes narration, very informative
super envious of your skillset, I was thinking about modelling & animating the CH47 flight controls, but by the time i got to the second staging unit my brain was melting....
those Vertol engineers were some mad-scientists.
so... I couldn't do it either. I should have been more honest :)
Hi my dear friend .Thank you very much for your beautiful sharing . It is very inspiring and interest . It is possible maybe to get complete about the gears and Rotor Blades and engine infos ore how is possible in CAD to become it . Can You help in this case when is possible for You of course . But first I Thank you very much for your beautiful sharing . Sincerely .👍
absolutely... As I make the chapters in this playlist I'll include details about the CAD. When I started posting these animations, I didn't do that, and it was such a frequent viewer request that I started including those details. I may have already answered your question on the gears and the parameters. Please look at the first video in this playlist. The title of the playlist is.... Building a 3D model of a Helicopter Here is a link: th-cam.com/play/PLhRKWwg17yplaW2XyvJbqKbVcxd1EkscY.html&si=ad-0DooSqnqFmbPb
I'll get to an explanation of the blades soon. Thanks for watching.
@@bzig4929 Thank you very much Sir for Your return. Have a great Day. Thank You very much.
Ia benar2 menakjubkan technologi whasplatate and blads baling2 helicopter yes gods nice sir yea keren! ...
Outstanding work.
OUTSTANDING : o .....
That first gear reduction from 21,000 gives me the willy's ! That's a lot of RPM's on a small pinion gear.
It must work... The gear sizes and speeds, used in the animation, came from actual data from the Blackhawk.
In Ray Leoni's book on the Blackhawk he says they had to meet an Army requirement to run for 60 minutes with no oil in the gearbox. (60 was a test requirement to show a 30 operational run-dry capability)
Those are some robust and proven gears!
@@bzig4929 Excellent point ! High RPM anything always makes me a little nervous. They designed it right! Excellent video !
One more comment. Can you do an explanation of mast-bumping in the future?
You’ve got three- and four-blade mechanisms mostly built, and they would be great for showing why these designs don’t suffer from mast-bumping while most (all?) two-blade helicopters do.
I know the theory, but I’ve only seen cartoon-like 2D drawings of how they cut the mast, and I’ll bet those aren’t that accurate.
mast-bumping is more related to teetering-head rotor mast assemblies, like those in a Robinson R22/44 or Bell B206 or B205/UH-1 Huey.
At least let him finish the articulated UH-60 rotor assembly before we get into secondary effects/mechanical design failures
where effects like ground resonance etc might also be addressed. ;)
@@the_apache_pit My basic understanding is that all two-bladed rotors are inherently teetering, and anything with more blades can’t teeter. But it sounds like that’s not quite right?
here's a fun fact... both the AW609 and the MV-22 Osprey (tiltrotors) have three-blade teetering designs. They have a hub spring, so there is some additional effective hinge offset compared to the Bell and Robinson teeters, but they are still teetering designs. Great comments... I'm thinking about doing a teeter side-by-side with the fully-articulated. That would be a cool video.
@@bzig4929 That would be awesome!
This is so BADD ASS!
awesome! I'm glad you think so.
Is the startup scenario described correctly? Sure, can get the gas generator going with aux power as an input (electric motor and/or apu?) but as soon as fuel is introduced, the power turbines and thus the rotar blades had best be moving lest that back-half of your engines melt. But maybe I'm mistaken and there's sufficient cooling even with the power turbines locked in place. But I will say, looks like the rotors start moving during engine runup (seen in person and vids)
th-cam.com/video/B_p3_9si5D4/w-d-xo.html (not a heli setup but close enough).
They are only operated at idle when the Np section is locked. And the pilot monitors TGT limits when operating like that.
I did a lot of my helicopter flying onboard ship and starting this way is more of the norm than the exception. I'm not aware that any special cooling provisions are built in for the aircraft that do this.
One concern though is blade rub... Meaning when the blades are heated in the exhaust without rotation (cooling) they grow... I've seen mitigating procedures for subsequent starts, but never for a cold start.
Here's a video showing a brake start. You can hear the pilots say "brake is holding" after they start each engine. With both engines on line, they then release the brake and only then do the rotors spin. th-cam.com/video/l0B5joST1mQ/w-d-xo.htmlsi=jRtDjyG--L6lLTAZ
@@bzig4929 Heard them say it several times, don't know what it means in relation to turning on the flame.
那我呢
icc pass
Absolutely fascinating.