Of all modern warship innovations, this is arguably the most valuable. The ability to operate a large helicopter from a relatively small surface vessel was a real game changer.
@polyus_studios2 жыл бұрын
I totally agree
@Chilly_Billy2 жыл бұрын
And who better to do it than the Canadians? They operate in some awful sea states, have used ASW helos for decades, and were a crucial part of NATO's defense throughout the Cold War.
@philsalvatore3902 Жыл бұрын
@@Chilly_Billy I used to admire the SH-2F crews flying off the tiny little flight decks of the Knox Class frigates. No Bear Trap on those. No harpoon and grating either. And no room for a mistake. I'm surprised the US Navy took so long to adopt Bear Trap.
@philsalvatore3902 Жыл бұрын
I flew SH-3s for a while in the US Navy and was puckering tighter than a gnat's you know what watching that Canadian Sea King land in heavy weather using the Bear Trap. I never imagined the seemingly fragile landing gear on the old Sea Pig could withstand that much sideways motion on touch down, but then the deck must have been pretty wet. I never landed one on a ship in those kinds of conditions. That's hairy. The Sea King was stable but slow and plodding, perfect for ASW or SAR, but we were always careful to treat it gently. That landing was anything but. I switched from SH-3s to the CH-46. Much more fun! We used to push our CH-46s into and out of the ship's hanger by hand. No tractor or anything. We almost lost one over the side when our ship took a sudden unexpected roll. The brake rider was standing on the brakes but she was skidding on the non-skid. Chocks NOW! And chains. Caught it with a wheel inches from the combing. Whew.
@Jon.A.Scholt Жыл бұрын
This is such an underrated aviation channel. I never knew I would be excited to see the newest video on a channel that covers Canadian aviation, a pretty esoteric subject.
@lessharratt87192 жыл бұрын
I have always enjoyed your videos about Canadian military innovation. Thank You.
@lunarorbit2 жыл бұрын
I love your videos. Your narration, the archival footage, and the music remind me of the Canadian educational films they used to show when I was in school.
@polyus_studios2 жыл бұрын
That was my inspiration!
@nzs3162 жыл бұрын
@@polyus_studios What I would’ve given to have your videos compared to the training films that we had to listen to which mostly were from vintage 1940s.
@polyus_studios2 жыл бұрын
haha yeah but those old videos have a charm onto themselves
@nzs3162 жыл бұрын
@@polyus_studios Bitter sweet in their own way. Nostalgic since we were just “pups” back then. Cheers!
@sailorman32 жыл бұрын
I was the flight deck electrician on several steamers and frigates for the Canadian Navy. I remember the diagram you showed from courses I went on. It is a great invention and also a dangerous piece of equipment to be around at times. There is no forgiveness in the Beartrap.
@dalea.58452 жыл бұрын
Just a point about Hover tension. You have it slightly incorrect. The hauldown system is not applying tension equal to the gross weight of the aircraft: if it did, it would (obviously) pull the aircraft right out of the sky, which is undesirable (to say the least). The goal of hover tension is to lower the CG of the helicopter to a point below the helicopter, which will then steady it above the trap and make landing in the trap much more certain. In the case of the Sea King, the maximum tension that could be applied was 5000lbs, which is coincidentally what the pedestal was rated for for slung loads (in a Sea King, the hauldown system and load slinging system were one and the same).
@randytaylor12582 жыл бұрын
Excellent!
@marvsmoir701 Жыл бұрын
Again....the RA cable tension loads the bottom of the helo probe imparting a destablizing side load. the pilot flies to stablize the helo (all forces in line / no side loads) which puts helo probe directly over the ra bell mouth. as ship rolls / yaws etc pilot follows the cable load. hover tension is low but gives pilot some feeling. recovery tension imparts a higher RA tension / load which the pilot responds. The RA tension never exceeds the reserve lift of the helo..
@dodaexploda2 жыл бұрын
You know the deal everyone. Spread the video around to social media. Let's get those subscriber numbers up. The more financial support these videos get, the more likely we'll get more.
@polyus_studios2 жыл бұрын
You're a legend!
@ScrotusXL Жыл бұрын
Until this video, I had no idea of this bit of technical genius. 60 years old and still going strong around the world’s navies. Well done Canada 🇨🇦
@joeschenk84002 жыл бұрын
Very interesting. I greatly enjoy all these Canadian aviation videos of aircraft not well known here in the US. Thanks for your work.
@polyus_studios2 жыл бұрын
Thanks!
@harbourdogNL11 ай бұрын
My father was one of the men who designed the Beartrap; he was in VX-10 (as well as HS-50), and trialled it on the various ships. He joined the RAF before WW2, trained at RAF Halton, & when the war broke out was transferred to the Fleet Air Arm. He was on loan to the RCN from 1948-50, and in '52 he transferred to the RCN as an instructor. There was nothing he didn't know abut the Sea Kings. CPO Austin "Chuck" Green. RIP. Thanks for this video.
@polyus_studios11 ай бұрын
Very cool!
@vinnycent0072 жыл бұрын
Awesome video. I currently serve on a Halifax Frigate and can say the bear trap is one of the most reliable means to get a helo embarked.
@killer1963daddy2 жыл бұрын
A problem is an opportunity to Canadians 👍
@Sir_Godz2 жыл бұрын
cant wait for the sea king vid
@thomasa71752 жыл бұрын
Very well made, professional Video !! People that show dedication , commitment to quality are present in this Episode.
@polyus_studios2 жыл бұрын
Thanks! I figure the occasional quality video is better than a bunch of poorly made ones
@randompanda8762 жыл бұрын
i never knew at sea helicopter recovery systems could be so interesting
@randytaylor12582 жыл бұрын
Landing is revenue.. ore interesting without it.
@bakhen2 жыл бұрын
I had no idea this was a Canadian innovation. Thank you!
@miketeeveedub57792 жыл бұрын
Whatever money they're paying the crewman to run out and secure the helicopter's drag line is not enough. That has got to be one of the most dangerous jobs in the RCN fleet, just short of live combat duties. Kudos to all the veterans who ever had to perform that function!
@polyus_studios2 жыл бұрын
Totally agree
@JeffBilkins2 жыл бұрын
Content suggestion: how do frigate based helicopter anti-submarine operations really work? What kind of patterns and ranges and coverage etc does it give? Like the sound buoys and probe dipsticks are cool but how do you protect a thing like a carrier?
@polyus_studios2 жыл бұрын
If I can find enough research material I would be interested in making one
@KB4QAA2 жыл бұрын
BVDS: The actual ranges of sonars, sonobuoy patterns etc are classified and should not be posted here. ASW is a complex system with all the ships, aircraft, subs, intelligence, Electronic warfare and satellites working together at all times. (old P-3 Orion guy).
@Netbug2 жыл бұрын
Takes "fly by wire" to a whole other level.
@assessor12762 жыл бұрын
I love your videos and as a fellow Canadian, they give me a sense of pride of what our armed forces and defence industries have achieved despite the lack of funding or even interest from successive governments. One small niggle….PLEASE PLEASE learn to pronounce French names such as St. Laurent (it’s “san loron” and not “saint lorent”).
@mattrika48742 жыл бұрын
Another top quality video, thanks guys!👍
@marks_sparks12 жыл бұрын
A really well made video. Great work @Polyus Studios
@polyus_studios2 жыл бұрын
Glad you liked it!
@marvsmoir701 Жыл бұрын
Great system. I was the hardware engineer for the US Navy when we adopted it as the RAST system. We modernized the electronic controls but did not change much else. You might add some discussion on the hrs Horizon Reference System that provides an artificial horizon to the pilot... By the way; the RA Cable induces a destabilizing force on the helo which the pilot feels and fly's to a more stable position, ie over the bell mouth in the center of the RSD.
@thesapphicathena95952 жыл бұрын
this was actually really cool, i never new this
@Ray-gf9su2 жыл бұрын
Thanks for this great video
@j-p64222 жыл бұрын
Great video! Thanks for all the in-depth research on the bear trap!
@polyus_studios2 жыл бұрын
cheers!
@paintnamer64032 жыл бұрын
Now I understand what the Beartrap is. Great video.
@shanelyon4142 жыл бұрын
Wow! That was awesome, thanks for an amazing video on something so small that made such a big difference.
@simonyoung47222 жыл бұрын
Incredible engineering and thank you for teaching me something I didn’t know existed.
@polyus_studios2 жыл бұрын
Glad you enjoyed it!
@loodwich2 жыл бұрын
I never think about that system... thanks for this chapter.
@speedmachine692 жыл бұрын
Gem of a clip...... love the pace of the edit and choice of music. Thanks.
@pastorrich74362 жыл бұрын
Your best yet! So excited to see a new installment and well worth the wait.
@rockxstarx49452 жыл бұрын
Another great video
@leducthecanuck2 жыл бұрын
Excellent video as always. I'm glad I subscribed!
@n1k2-ja46 Жыл бұрын
The Japan Maritime Self-Defense Force (JMSDF) also uses bear traps. From JP, thank you for the explanation of the interesting function. 我が国の海上自衛隊(JMSDF)でもベアトラップを使用させていただいております。JPから、興味深い機能の解説ありがとうございます。
@TheRandCrews2 жыл бұрын
Do you think this could be viable if they ever put anything larger VTOL aircraft if they try to land Harriers or the MV-22s on Destroyers or cruisers?
@louiscote74662 жыл бұрын
For VTOL jet, it would be probably possible to make them land. A shit load of problem would come with that, as for how would a cable be pull down from the jet just for an exemple. The primary problem tho would be how to make it fly again, VTOL jet still need an short runway to takeoff with some weight (so missile, bomb, a good load of fuel, ect). It would also be not really useful, I'm sure some navy would find a way to make it useful, but one or two aircraft on a ship, that can't takeoff with a combat loadout and not much fuel would be kinda dumb. For the MV-22, that would be a pretty good idea, lot less problem compare for a jet, actually useful I'm sure, what I would be scare of, is the weight of this beast and how big it is. Definitely the american would be able to find a way to do it and have a beefed up beartrap with a big landing pad capable to have 40 000+ lbs land on it, but at that point, they also already have their amphibious ships and carrier that carry them. If Canada would want some for their ship, a lot would need to be done to to welcome them safely. The new Cyclone are already a problem here because of their weight. I can't imagine putting down an osprey that is probably the double of the weight of the cyclone our ship lol Sorry long reply but great question :)
@polyus_studios2 жыл бұрын
@@louiscote7466 yep
@marvsmoir701 Жыл бұрын
@@polyus_studios Flight dynamics require reserve lift for pilot to respond to the unstablizing RA cable tension.
@samgeorge47982 жыл бұрын
Great as always. Your quality is always high and professional. Keep on
@SaturnCanuck2 жыл бұрын
I know of this system but it was great to hear the details. Looking forward to the Sea King video -- a helo that is as old as I am.
@raynus11602 жыл бұрын
As always, an excellent presentation - some of those images - wow.
@ABrit-bt6ce2 жыл бұрын
I've heard of this but not seen the specifics. Harpoon is rather more familiar. Thanks.
@polyus_studios2 жыл бұрын
Interesting, I don't think most North Americans have never seen the harpoon style!
@marvsmoir701 Жыл бұрын
@@polyus_studios We tried it with a Kaman SH . Problem - no securing during the traverse to/from hangar. I developed a cable/winch/snatch block system but way too complex and too heavy for deck crew...The 101 has landing gear that pivot to allow helo to spin around the harpoon ...and so align for movement when ship motion is reduced.
@philsalvatore3902 Жыл бұрын
@@marvsmoir701 I greatly admired the crews operating SH-2Fs from the really small fight decks on those Knox class frigates. Narrow flight deck and a telescopic hangar, living on a crowded frigate that must have been pure misery in heavy weather.
@nothandybutcheap20862 жыл бұрын
Great channel great Canadian content
@joebush16632 жыл бұрын
"Ready to land." "Land now, now, now."
@randytaylor12582 жыл бұрын
Wow! Awesome. Excellent video.
@wmayo14922 жыл бұрын
i had never heard of this device. Well done, Canada! Glad the US Navy didn't take a NIH attitude on it.
@FirstDagger2 жыл бұрын
2:18 "Hadn't been tried before" Germany operated the Flettner Fl 282 Kolibri from Light Cruisers.
@seanmckee48642 жыл бұрын
The FL282 isn't close to being a large helicopter and only 24 were built. It was to be used to help carry supplies from ship to ship or ship to shore. However the statement is correct, using large helicopters on ships that size had not been successful until the Canadians.
@polyus_studios2 жыл бұрын
HMCS Labrador was doing similar things at the same time as mentioned in the video. 8000kg helicopters on a ship much smaller than a cruiser was a Canadian first. Thanks Sean!
@Fundytrail11 ай бұрын
The original "Beartraps" were operated by HP compressed air but were updated later to operate off hydraulics. This was a huge step forward as they could be "fired" a number of times with the onboard hydraulic pump without the need to recharge them with air in the event there was a need to make several attempts to secure the helicopter probe.
@harbourdogNL11 ай бұрын
My Dad was one of the guys who developed the Beartrap. I still have a lot of his papers on it.
@Andrew-jg7xv Жыл бұрын
Your videos are the best, can’t wait for the Sea King one you teased about in this video One very small comment, the position that operates the bear trap is the LSO, landing signals officer, one of the pilots in the other crew onboard, their “office” on the flight deck is called the LSO compartment More Canadian content like this !
@philsalvatore3902 Жыл бұрын
In the US Navy we had the LSE, Landing Signal Enlisted. On the ships I deployed with there would be a pilot in a control station above the hanger taking to the helicopter on radio acting kind of like a mini-Air Boss and talking to the flight deck with a walkie-talkie. LSOs were only on carriers or LHA/LHDs.
@3142992 жыл бұрын
Excellent content as usual, thanks again for your obvious hard work on these interesting topics.
@polyus_studios2 жыл бұрын
Cheers!
@davidangel-blair93582 жыл бұрын
Excellent video! Thank you.
@polyus_studios2 жыл бұрын
Cheers!
@CMDR.Gonzo.von.Richthofen2 жыл бұрын
Lil Canadian tuxedoes @ 9:42 😂
@danielwatkins6882 жыл бұрын
This is cool to me as both my dad and I worked at shearwater him on the CH 124 and myself on the CH 148 Cyclone. Both aircraft were equipped with RAST equipment.
@paulflak28232 жыл бұрын
Pst, don't tell the Yanks Canada developed this technology and procedures which they think they developed!
@alpearson91582 жыл бұрын
not the first time
@charlieross-BRM2 жыл бұрын
Some dude commenting today wrote "... first developed by the U.S. Navy ... in 1980..." Maybe he turned off the sound before he started watching this video. This system was started around 1962 and well established in the fleet by 1965 according to the presentation. SMH. He's going to lose it if he sees videos about the variable pitch propeller and the G-suit.
@marvsmoir701 Жыл бұрын
@@charlieross-BRM I do not know who he was but as the USN engineer I know BEARTRAP was Canadian all the way, with Dowty developed the hydraulics. We the USN worked with the Canadian National Defence and contracted with DAF -INDAL of Mississauga to modernize the BEAR TRAP to be come the RAST system...
@YYCRS2 жыл бұрын
Another great video !
@raywhitehead7302 жыл бұрын
As far as I know, no helicopter ever, Ever has used water munitions to sink A submarine. However, one helicopter using rockets damaged A sub in the Falklands war.
@Shadooe2 жыл бұрын
You get a like and subscribe just for the footage at 6:35 alone. Braver men than me.
@Netbug2 жыл бұрын
Awesome, thanks! Can't wait to watch tonight. Any plans for a video on the CH-125 or CH-126 in the near future?
@polyus_studios2 жыл бұрын
I'm planning to make one about the helicopter of the armed forces over the years and I'll have a bit there about the Choctaw. Which one was the CH-125?
@Netbug2 жыл бұрын
@@polyus_studios Cheers, looking forward to that. I don't know anything about either but moved a H-21 and H-34 to outdoor storage at Shearwater in the 90s. The paperwork stated "CH-125" but I believe that's just the official name for the Canadian H-21. I don't know if there are any differences. All I know is they were both beautiful and I was sad at the state they were in and wished I could see them flying. Apparently they were getting restored for static display (pending funds) but I don't know what became of them. They aren't at my local aviation museum nor are they on the base.
@deltaskyhawk2 жыл бұрын
Wonder how they dealt with the electrostatic differential between ship and helicopter?
@polyus_studios2 жыл бұрын
They connected a grounding line using a stick to the wire coming out of the helicopter before they tried to touch it. Otherwise they'd be very electrocuted
@philsalvatore3902 Жыл бұрын
@@polyus_studios An SH-3 wouldn't electrocute you but it would be a good jolt. Our SAR swimmers were very familiar with this because they would feel it whenever we hoisted them down to the water to effect a rescue.
@BigUziVert2190 Жыл бұрын
Thank you for your amazing videos! They help me realize all of the great innovations my country has made. Thank you and keep up the amazing work man!!
@MakeItWithJim2 жыл бұрын
Well done Canada - Lets make Canada great again
@KirtFitzpatrick2 жыл бұрын
Wow, that was very interesting. Great video!
@andytidnits Жыл бұрын
Very interesting. So, how many bears did they capture with this thing prior to using it for helicopters?
@olegadodasguerras37952 жыл бұрын
Nice vídeo 👏👏👏
@raywhitehead7302 жыл бұрын
Probably, the only one on this site that really did ASW, or attack helicopter on this site.
@scottb40292 жыл бұрын
Loved the video. I wonder how many sailors owe their lives to this 60 year old invention that most have never even heard of. ?
@Lanky412 жыл бұрын
And it’s all thanks to the Canadians!
@hvader12 жыл бұрын
Awesome video. Will definitely be sending this to my Subbies when I get to my next ship. Our explaination is nowhere near this good. Edit* The only thing that you're missing is that the hauldown and bear trap are two seperate systems that can operate independent of one another. This revelation blew my mind while I was deployed last year, and I probably had run about 100 helicopter take offs and landings at that point. If anyone wants a further explaination I will happily give it, but its hard to do without visual aides.
@polyus_studios2 жыл бұрын
I didn't know that, thanks!
@ctcrusader74792 жыл бұрын
Excellent.
@robbyowen91072 жыл бұрын
Thanks for another great, detailed history!
@michaelguerin562 жыл бұрын
Thank you. Great video. Always something new to learn.
@notlikely44682 жыл бұрын
My Uncle Captained the Assiniboine during the Beartrap trials No...he didn't ground her That was another guy (But...there was a dock in Bermuda he scraped some rust off)
@kidmohair8151 Жыл бұрын
likingandcommenting to feed the insatiable maws of the algo-deities of the tube-u-all
@JeffBilkins2 жыл бұрын
I was vaguely aware of the harpoon type but I had no idea this existed.
@springtime1838 Жыл бұрын
In the 60s the USN considered using DDH's with a plan for a modified Spruance Class wirh a hanger with room for 2 SH-3 Sea King or 4 SH-2 SeaSprite but this was Canceled and all were built as regular DD's with just 2 SH-2's and later SH-60B's
@philsalvatore3902 Жыл бұрын
With the MH-60 you get a dipping sonar helo on your destroyer or frigate.
@johnandrews35682 жыл бұрын
Outstanding as always.
@lexas12 жыл бұрын
Well done. I am amazed I didn't know about this.
@m1t2a12 жыл бұрын
Whenever I see one of that type Bell helicopter my mind goes to The Forest Rangers.
@nzs3162 жыл бұрын
Imagine the stresses on the airframe! Not to mention the obvious white knuckle stresses on the pilots. I wonder how much maintenance the folding blades required. From my experience, whenever they were brought into our hanger, we never folded the blades. Just afraid they would become u.s. At the 9.42 time stamp, that roll must be close to 40 degrees!
@sailorman32 жыл бұрын
Ships you were on must have been vey wide. The blades on the Canadian Helicopters are much wider than the hanger door.
@nzs3162 жыл бұрын
@@sailorman3 The blades fold towards the rear of the aircraft. Unfolded in the operating position they take up a lot of room in a hanger.
@sailorman32 жыл бұрын
@@nzs316 I know exactly how much room they take. I’ve assisted in folding them at sea many times. Lol. You said that from your experience you never folded the blades. I mentioned that you must have had a wide hanger if you put the helo in the hanger without the blades folded. Even on land they fold the Seakings rotor when they put them into a hanger or if they tow them with a mule.
@nzs3162 жыл бұрын
@@sailorman3 For the most part they stayed outside at CFB Saint Hubert, when visiting hanger 10. It was only when they required maintenance, it’s not for nothing that they were called Sea pigs, that we brought them in.
@Helifella882 Жыл бұрын
It's amazing how many so-called aviation experts cannot spell HANGAR correctly. A hanger is what a coat hangs from. Doooh!
@raywhitehead7302 жыл бұрын
Write all these Canadian helicopters built in the US?
@trishweber96952 жыл бұрын
I noticed the new Chinese tyoe 055 super destroyer even has a bear trap type system. The deck has two slots in it for traversing into and out of the hangers
@philsalvatore3902 Жыл бұрын
The Soviets/Russians had a track to move the helo in and out of their hangers of the Udaloy class and if my brain wasn't fried by too many runs in Olongapo, the Sovremenyys had it too, but that was all it was for so perhaps that is all the Chinese have. They didn't have a haul down system relying instead on a big net stretched across the landing area raised several centimeters above the deck. The landing gear wheels would get trapped by the netting so the helicopter wouldn't slide off the deck. I took some pretty good images of the then brand new Admiral Spriridonov in the IO circa 1986 as she deployed from the builders to Vlad (and already rusty with the paint gone from the bow) and you can see the tracks in the deck. They had really convoluted hangers with a roof that slid open and a ramp from the flight deck down to a lower level inside the hanger bay. The roof had to slid open to clear their rotors as the helo descended down the ramp. They needed a motorized something to move the helo up and down that ramp because the KA-32 is about as heavy as a Sea King.
@aregularperson75732 жыл бұрын
Yesterday I saw a CT-133 at The EAA Airshow got a bad case of sun burn but it was worth it
@polyus_studios2 жыл бұрын
I get a sunburn each and every time I got to an airshow. Price of admission I guess
@m1t2a12 жыл бұрын
All the other countries on earth, "Sea King is a fantastic and reliable helicopter if you update and maintain it." Canada, "These things are horribly unreliable. What's maintenance? And we're not paying to update them. They'll be replaced in a few years. I mean decades."
@JoshuaC9232 жыл бұрын
That's awesome, i was on the edge at 6:50 that was pretty scary
@peterpenberthy29182 жыл бұрын
Dear god that trap looked scary..
@petesheppard17092 жыл бұрын
Some of those recoveries still looked really scary...
@gabeezy53852 жыл бұрын
Love your vids! keep it up
@supastyler19 ай бұрын
They take all the fun out of everything these days 😅
@darrellbedford4857 Жыл бұрын
Another fantastic aviation development of the Pre 70's Canadian Aviation Industry. What happened to it?It went from one of the worlds best to almost nothing. Bombardier can't even survive without Government money or partnering with a European company.
@polyus_studios Жыл бұрын
It is still being used by Navys around the world
@raywhitehead7302 жыл бұрын
Goes way back, way back to Bell helicopters in the 1930s an American company.
@dulls84752 жыл бұрын
Should come in useful for me at some time. Next i am going to learn to boil an egg.
@Strelnikov4032 жыл бұрын
St. Laurent is pronounced Sain-Lauron, by the way. Not Saint-Lawrent. It's French.
@eanerickson89152 жыл бұрын
It is like a winch? The Canadians invented a winch?
@donaldclark86922 жыл бұрын
LAMPS
@marvsmoir701 Жыл бұрын
Hey ...are any LAMPS program office people still around??? I remember sitting in the JP-1 conference room for monday morning meetings...
@mazdarx78872 жыл бұрын
i wonder if it actually ever caught a bear
@polyus_studios2 жыл бұрын
Ocean bears only
@eanerickson89152 жыл бұрын
Bfft. Helicopter? The Canadians invented a winch.
@alpearson91582 жыл бұрын
suggest you get a little bit of an education
@brustar51522 жыл бұрын
@@alpearson9158 Too late.
@assessor12762 жыл бұрын
Yeah, too late. This guy already knows everything.
@Delta_Hotel2 жыл бұрын
Could you consider getting rid of the background music in your videos? I don't feel that it adds anything to the video; the content is plenty strong enough to stand up on its own. Personally I just find the music distracting.
@raywhitehead7302 жыл бұрын
Concept first developed by the US Navy in the 1980s and still used.
@polyus_studios2 жыл бұрын
which concept? Beartrap (aka RAST) was Canadian my friend
@raywhitehead7302 жыл бұрын
Curtis Wright, American company owns Iindal, canada, concept was first demonstrated 1951 since then many updates and refinements. An American company, darling.
@raywhitehead7302 жыл бұрын
Retired USN Aviator, thousands of ship landings.
@raywhitehead7302 жыл бұрын
But concepts were much earlier, see Aurther Young a pioneer in helicopter Aviation. He helped found Bell Helicopter. Old, guy, my first helicopter instructor father was taught by.... Drum roll.. Igor Sykorsky!!