All but the simplest planes have variable pitch propellers with a constant speed governor. This is especially important when you are hovering using high inertia rotors because their rotational speed can't change fast enough for good vertical control. The vortices have a low pressure region in the centre that causes the water in the air to condense. It's never compression that causes this, it's always rarefaction (sometimes the result of a compression wave having passed).
@@alirehan4021 We can work it out with some assumptions. First, a quick one: Since the blades are 'retreating' instead of advancing, we know that the blades are reaching the same position later and later with each pass, losing the race with the frames the camera is taking. So the camera has a higher frame rate than the blades rotate. But we can take this further. Let's say the camera is recording at the standard rate of 30 frames per second. That means the camera takes an image 30 times every second. It takes, based on a quick eyeball count, about 3 seconds for the blade to 'retreat' all the way around the rotor, or about 90 frames of camera recording. That, conveniently, leaves us with a nice 3:1 ratio. It takes 3 frames for the blades to rotate once. So you get ten rotations in the thirty frames the camera captures. Ten Rotations per second. That's an RPM of 600. Which is pretty inline with how much RPM you want with an engine that big. You don't want 4,000 RPM with blades that large, because the bigger they get, the more stress rotation will put on them. I have it on good authority people generally don't like blades the length of a car snapping off and flying edge-on into nearby bystanders. And you can also get a pretty good idea of RPM ff you listen to the blade slaps. You can distinctly hear how they have a sort of almost-drone to them at a very low pitch. Each engine has three blades going by at ~10 Hz (cycles a second), producing 30 Hz overlapping itself between the two engines. The human ear can hear tones starting around 20 Hz. If you listen to the audio, the blade slaps slip in and out of real sharp 'clippy' noise and a more smooth drone, entirely from the combination of the distance between the two engines from the camera, the wind moving the air, and the turbine exhaust blowing the air.
This is a well-known phenomenon. The increased rpm is high enough that we cannot possibly observe the actual speed of rotation, so we compensate by seeing what seems to be a reduction in speed. These are counter-rotating rotors, one going clockwise and the other anticlockwise.
Name one helicopter that is WITHOUT autopilot? Plus it was testing, not flying paying passengers. Most modern fighter jets would fall out of the sky in seconds without the fly-by-wire.
@Afrocanuk: Switzerland has not got anything to do with this aircraft. The Italian company only made use of the high-altitude location in Switzerland for their tests.
That's how the frame rate affects what we see. Remember that the camera can't "know" the difference between a solid object and a shadow. It is simply recording an image approximately every 40 milliseconds. The shadow moves at the same speed as the object causing it - since the light is travelling at ... the speed of light. =) The rotors on the AW609 (previously called BA609) turn at 570 rpm in helicopter mode. That means one of the three blades moves into the same space (570 rpm x 3 blades) / 60 seconds = 28.5 times per second - or every 35 milliseconds. Since the frame rate is faster (at these rpm), the image will be captured "earlier", i.e. before a blade is in the same position again. When the difference in time is so small, the "animation" effect will be to show a slow movement - in this case backwards. If the frame rate was slower (by the same amount) than the time taken for a blade to move to the same position as the one preceding it then the motion would appear to be forwards. Some cameras (like the iPhone 6s, Sony and GoPro) and can record at up to 240 fps (frames per second). If the camera recording this aircraft had such high frame rates, then just about any effect could be reproduced by selecting the right frame rate for the desired effect.
Man, it's hard to describe the impression this creates. There's so much power there and yet I everything seems so subtle! For me at least, it is vastly different than watching an Osprey, which seems to always be operating outside its design envelop! Thanks for this cool vid. The scenery is very beautiful!
I tried to show what it takes to get airborne on such test flights. And if you read the description, it prepares you for the fact that you need a bit of patience.
At 3:33 the stroboscopic effect of the camera photographic sequence makes the rotors look as if they are rotating the wrong way around in reverse, as that is not a lifting mode in which they APPEAR to rotate. This is an optical illusion that also makes wagon wheels in cowboy films rotate in the reverse direction when moving forward and he could solve this illusion while filming would become a very rich man.
It can, but you'll notice it can only fly backward when the rotors are spinning in that direction. To go forward, the engines have to reverse direction of rotation of their crankshafts, which is quite difficult once the aircraft is flying. (The copilot is quite helpful in that operation, in which precise timing and dexterity of the pilots is extremely critical - simulators are used extensively in this because training for engine reversal in flight using the actual aircraft is extremely hazardous)
It's not an optical illusion. It's because the rotation of the props is matching the frame rate of the camera recording the event. Your eyes wouldn't be seeing the rotors as they would be a blur
I don't know if it's the camera's speed or the refresh rate of my screen that makes the props look like they're barely turning, but it looks cool. You can also see the little vortices from the tip of the blade.
They could, but it wouldn't be cheaper. On a sidenote, the engines are connected with eachother, so when one fails, the other one keeps both rotors spinning.
The tilting blades (prop pitch) are designed to manage the load on the engine in fixed-wing aircraft. The tiltrotors and helicopters have governor devices to manage this.
Ovo su stvari koje ja ne da volim nego jos pre 30 godina sam ih voleo i zeleo bas ovakovi eto doziveh da vidim to i u javnosti.Hvala ti Boze sto si mi moje sne ostvario.
@BA609tiltrotor Thanks for the flowers, glad you like the video. I would have loved to see the transition too. But they seemed to just be interested in the hover position under the relative high altitude conditions. They later moved back and forth over the runway without ever doing more than just a slight tilt of the engines as seen here on the ground. And they did not want to have much wind for the tests either, probably to standardise measurements.
I knew someone would think that .. when i also recorded a plane landing with propellers the same thing happened and the reason is that the camera cant keep up with the high speed of propellers and hence records accoording to its maximum refresh rate.. in real life with human vision its revolving really fast
Its more of a helicopter than a fixed wing aircraft. You need to get to speed of around 200 knots so that the wing gets lift before the nacelle can be streamlined for cruising speed. To slow down, you need to angle the nacelle a little bit upward like that of a helicopter rotors.
I don’t know where you get that. Transition starts around 40kn and is complete by around 80kn when the wing is generating enough lift. You can see it when they do a vertical takeoff off and are fully horizontal by the time they’re halfway down the runway
are those caused by the air reaching supersonic speed? or just compression? i love how you can see the blades change pitch when he takes off... was he taxiing with engines on full rev though? it seems that way since the apparent speed of the blades remains the same after maneouvering into position for take off and the actual take off... only the pitch seems to change
This is a remarkable aircraft it will save countless lives when its put into the SAR role only question is how does the coast guard afford such a pricey toy .
I wonder if it has the rotor driveshaft through the wing like the V-22. The reason why the V-22 won the contract was that it can land if a one motor dies. Although it can't keep flying like a helicopter with one engine, it can fly in airplane mode but will be forced to land when the engine goes into vertical mode (the props are too big to land as an airplane)
i love flying these in my sim games they are just so awesome to fly and its hard dont get me wrong but the feeling after u land is just so saticfying :D
>>> The rotors seem to slow down >>> when the real speed in the opposite direction actually increases. Perhaps due to "resonance" with the video frame rate i.e. the rotor speed might be near multiples of 30fps
I am wondering how this thing can land, I do not mean crash but land, if there is a single engine failure while at flight. --- I mean, it is obvious, it will crash when in hover mode and an engine fails. But what when flying like a plane and an engine fails. Because of the rotor size it cannot land like a normal airplane, since no high forward flying landing speeds. Is one engine still enough to not crash on a landing strip, or does that mean that in both operation modes, hovering and flying, a crash is inevitable with a single engine failure?
128 pirla che mettono pollice verso.....invidiosi che un azienda italiana precisamente del varesotto, e' riuscita a creare questo gioiello tecnologico.... Grazie ai tanti talenti italiani che stanno lavorando a questo magnifico convertiplano
Your shutter speed is the source of the slow motion rotors. Try experimenting with that as it makes a significant difference in the end product. It's a shame that opportunity to film this aircraft in a realistic manner was lost.
@Myrtone Well, I took the video. It would be a bit hard to pilot the craft at the same time.;-) Actually, I just find the technique fascinating to get such an aircraft into the air and safely back down as well.
@@StaceyIsles saw a video of a twin engine prop plane with the same effect, but in that it looked like the propellers where stationary, like the engines weren't running.
They are variable pitch ofc... It's simple, look at the prop spinners, they have cutouts in them. :) Every modern craft except very small civ aircraft has variable pitch propellers to control the load on the engine.
re: Connor Vaughn - I'm in line with your thinking. Just how does the pilot cope with c of g fluctuations whilst in hover mode ? Either there's an incredibly sensitive auto pitch system, or NOBODY'S allowed to visit the john !
Britain had one of these flying in the 1960's. It's nothing new. It was scrapped at least in part because it was extremely noisy. Otherwise the concept of these craft is to land like a helicopter yet have the speed of a fixed wing aircraft in conventional flight.
స్మాల్ కాదు ఒక మనిషి పైకి లేవడానికి ఎంత సమర్థ్యమో అంతే కరెంట్ ని మనం ఎంత కావాలంటే అంతే సెట్ చేసుకుంటామా అలాగే యంత్రం ఒక మనిషి కి సరిపోయే అంత యంత్రం అంతే. సౌర విద్యుత్ వుంది ఒకమనిషి ఈజీ గా ముందుకు వెళ్ళవచ్చు. అనీ అభిప్రాయం. 🤗🤗🤗🤗🤗🤗🤗🤗🤗
They are not rotating slowly 😑!!! They are rotating at such a high speed that you eyes cannot capture it's image at every instant and for which it appears to be rotating slowly 😑😑
Yes, I meant the pitch of the plane. It must have cyclical control like a helicopter. It must have collective too, because the turbine would not be responsive enough.
BA-609 - B (Bell, USA) A (Agusta, Italy) Its a joint venture project. Flight test aircraft will be US registered for certification, but may be in the colours of prime future customers (e.g Italian Air Force)
@bigbeartr57: I actually rather hate this effect as it gives a completely wrong impression of what is actually happening. May be fine for teaching the phenomenon, but that was not my intention here.
I wonder which system is more efficient and better than other, one the system is, like this, rotating engine with propellant part together, or like Bell, rotating propellant part and gear only, the engine part stays.
So yes? :P If so, that would be quite complex. I reckon this way is much more efficient, because it optimizes possibility. It can move master than a heli, and it is as manoeuverable.
Why would Switzerland bother with this design? It's rocking from side to side while hovering is a clear indication of instability. The Russian Ka-226 would've been a good alternative.
+Altenholz The tilt rotor? Incredibly expensive, has a little problem with crashing... There's a lot of problems with the tilt rotor that are well documented
Seriously cool how propeller speed almost matches frames per second huh!
All but the simplest planes have variable pitch propellers with a constant speed governor. This is especially important when you are hovering using high inertia rotors because their rotational speed can't change fast enough for good vertical control.
The vortices have a low pressure region in the centre that causes the water in the air to condense. It's never compression that causes this, it's always rarefaction (sometimes the result of a compression wave having passed).
Great to see the tips so clearly at the end, and to realize the rotors are spinning much faster than they seem on the video. Great work!
Salam
Love how the frame rate shows the blade vortices
Please could you explain what you mean?
I love the frame rate effect on this video with the reverse turning rotors
🐱🔛🐱🔛🔛🔛🔛🔛🔛🔛🔛🐱(/ω＼)╯﹏︶︿╯﹏╰︶︿︶🐱🐱🐱🐱🐱🐱🐱🐱
Is it due to higher frame rate or lower frame rate...??
@@alirehan4021
We can work it out with some assumptions. First, a quick one: Since the blades are 'retreating' instead of advancing, we know that the blades are reaching the same position later and later with each pass, losing the race with the frames the camera is taking. So the camera has a higher frame rate than the blades rotate.
But we can take this further. Let's say the camera is recording at the standard rate of 30 frames per second. That means the camera takes an image 30 times every second. It takes, based on a quick eyeball count, about 3 seconds for the blade to 'retreat' all the way around the rotor, or about 90 frames of camera recording.
That, conveniently, leaves us with a nice 3:1 ratio. It takes 3 frames for the blades to rotate once. So you get ten rotations in the thirty frames the camera captures. Ten Rotations per second.
That's an RPM of 600. Which is pretty inline with how much RPM you want with an engine that big. You don't want 4,000 RPM with blades that large, because the bigger they get, the more stress rotation will put on them. I have it on good authority people generally don't like blades the length of a car snapping off and flying edge-on into nearby bystanders.
And you can also get a pretty good idea of RPM ff you listen to the blade slaps. You can distinctly hear how they have a sort of almost-drone to them at a very low pitch. Each engine has three blades going by at ~10 Hz (cycles a second), producing 30 Hz overlapping itself between the two engines. The human ear can hear tones starting around 20 Hz. If you listen to the audio, the blade slaps slip in and out of real sharp 'clippy' noise and a more smooth drone, entirely from the combination of the distance between the two engines from the camera, the wind moving the air, and the turbine exhaust blowing the air.
@@idrisali9809 ppopppppp
@@atigerclaw bro was waiting his all life for this
Wow! That's the first time I've ever seen wingtip vortices from rotor blades. Really cool!
োুুু
This is a well-known phenomenon. The increased rpm is high enough that we cannot possibly observe the actual speed of rotation, so we compensate by seeing what seems to be a reduction in speed. These are counter-rotating rotors, one going clockwise and the other anticlockwise.
7
It's a Shutter Speed Synchronization phenomenon! Not our eyes!
Look I don't know, but the shadows?
@@robertweekley5926 So why then do you observe the same effect with the naked eye?
Sadly, this aircraft crashed in October 2015 in Italy near the factory. Both pilots died in the event.
OH shit. I am sorry to hear that. Do they know why it crashed and is there a video or pics of the crash?.
this aircraft doesnt seem to be very stable
Name one helicopter that is WITHOUT autopilot? Plus it was testing, not flying paying passengers. Most modern fighter jets would fall out of the sky in seconds without the fly-by-wire.
The standard Robinson R22 and R44, for starters.
Is this project canceled because of this?
@Afrocanuk: Switzerland has not got anything to do with this aircraft. The Italian company only made use of the high-altitude location in Switzerland for their tests.
piebstrains1 thats exactly what the titel says...
the vortex curling off the blades is awesome!
Yeny paola
Zip@@yenytorres4155
@@yenytorres4155 ..p
nice camera frame shutter sync with rotors
love the optical illusion at the end, reminded me of other encounters with helios
It´s awesome how the framerate of the camera makes it look like the rotor is turning once every second
but why is the shadow also so slow??
If you look at the pitch of the rotors, you'll notice that it's even worse! The rotors look as if they are spinning backwards.
That's how the frame rate affects what we see. Remember that the camera can't "know" the difference between a solid object and a shadow. It is simply recording an image approximately every 40 milliseconds. The shadow moves at the same speed as the object causing it - since the light is travelling at ... the speed of light. =)
The rotors on the AW609 (previously called BA609) turn at 570 rpm in helicopter mode. That means one of the three blades moves into the same space (570 rpm x 3 blades) / 60 seconds = 28.5 times per second - or every 35 milliseconds.
Since the frame rate is faster (at these rpm), the image will be captured "earlier", i.e. before a blade is in the same position again. When the difference in time is so small, the "animation" effect will be to show a slow movement - in this case backwards. If the frame rate was slower (by the same amount) than the time taken for a blade to move to the same position as the one preceding it then the motion would appear to be forwards.
Some cameras (like the iPhone 6s, Sony and GoPro) and can record at up to 240 fps (frames per second). If the camera recording this aircraft had such high frame rates, then just about any effect could be reproduced by selecting the right frame rate for the desired effect.
Well duh it is turning
Man, it's hard to describe the impression this creates. There's so much power there and yet I everything seems so subtle! For me at least, it is vastly different than watching an Osprey, which seems to always be operating outside its design envelop! Thanks for this cool vid. The scenery is very beautiful!
the1realanalogman giao'thnmới
the1reala
Fantastic video
This is so cool. I guess the three guys at the beginning are from the Airports answer to AAA
I tried to show what it takes to get airborne on such test flights. And if you read the description, it prepares you for the fact that you need a bit of patience.
0
@@subramanisubu12440⁹0
aaa aaa
One of the most unstable and unperfected aircrafts ever. It takes a very special pilot to not fuck up when flying one of these.
Inhaling exhaust fumes from aircraft will definitely make you super high.
At 3:33 the stroboscopic effect of the camera photographic sequence makes the rotors look as if they are rotating the wrong way around in reverse, as that is not a lifting mode in which they APPEAR to rotate. This is an optical illusion that also makes wagon wheels in cowboy films rotate in the reverse direction when moving forward and he could solve this illusion while filming would become a very rich man.
Carmel Pule' Just change the shutter speed/frame rate...
What is that wierd black line that keeps showing up in the middle????
An engineering marvel, the plane can even take off when the rotors are spinning in the opposite direction.
It can, but you'll notice it can only fly backward when the rotors are spinning in that direction. To go forward, the engines have to reverse direction of rotation of their crankshafts, which is quite difficult once the aircraft is flying. (The copilot is quite helpful in that operation, in which precise timing and dexterity of the pilots is extremely critical - simulators are used extensively in this because training for engine reversal in flight using the actual aircraft is extremely hazardous)
It's not an optical illusion. It's because the rotation of the props is matching the frame rate of the camera recording the event. Your eyes wouldn't be seeing the rotors as they would be a blur
man war das ein spannendes Video... total aufregend
I don't know if it's the camera's speed or the refresh rate of my screen that makes the props look like they're barely turning, but it looks cool. You can also see the little vortices from the tip of the blade.
In my head I keep comparing this to an Osprey and it just looks small.
Yes I know this is not a Osprey.
Heavy blades for a small craft. It was an interesting concept but certainly there are more agile and lightweight and safer alternatives now.
The camera shutter captured those tip vortices perfectly.
00000000
@@thaysbispoaraujo5528 а
That's awesome, the wash from the prop blades are visually going backwards.
They could, but it wouldn't be cheaper. On a sidenote, the engines are connected with eachother, so when one fails, the other one keeps both rotors spinning.
The tilting blades (prop pitch) are designed to manage the load on the engine in fixed-wing aircraft. The tiltrotors and helicopters have governor devices to manage this.
TheLT ko
Ovo su stvari koje ja ne da volim nego jos pre 30 godina sam ih voleo i zeleo bas ovakovi eto doziveh da vidim to i u javnosti.Hvala ti Boze sto si mi moje sne ostvario.
Cessna 500 nose, PC12 tail, body of a king air, gear of a Bell helicopter, wing of a Meridian, and osprey tilt rotors.
@BA609tiltrotor Thanks for the flowers, glad you like the video. I would have loved to see the transition too. But they seemed to just be interested in the hover position under the relative high altitude conditions. They later moved back and forth over the runway without ever doing more than just a slight tilt of the engines as seen here on the ground. And they did not want to have much wind for the tests either, probably to standardise measurements.
those propellers must be very superior , at 4:50 they spin at just ½ revolution per second , and it still lifts fine
I knew someone would think that .. when i also recorded a plane landing with propellers the same thing happened and the reason is that the camera cant keep up with the high speed of propellers and hence records accoording to its maximum refresh rate.. in real life with human vision its revolving really fast
Its more of a helicopter than a fixed wing aircraft. You need to get to speed of around 200 knots so that the wing gets lift before the nacelle can be streamlined for cruising speed. To slow down, you need to angle the nacelle a little bit upward like that of a helicopter rotors.
I don’t know where you get that. Transition starts around 40kn and is complete by around 80kn when the wing is generating enough lift. You can see it when they do a vertical takeoff off and are fully horizontal by the time they’re halfway down the runway
the illusion of slow rotors is awesome :)
It's not an illusion, the propellers are accessing the sound waves. This is why you can actually see it.
@@dianavance1137 no the aircraft has anty gravity technology these are just Radars
@@dianavance1137 inuit iikiiii
This flying contraption just looks epic.
are those caused by the air reaching supersonic speed? or just compression?
i love how you can see the blades change pitch when he takes off...
was he taxiing with engines on full rev though? it seems that way since the apparent speed of the blades remains the same after maneouvering into position for take off and the actual take off... only the pitch seems to change
This is a remarkable aircraft it will save countless lives when its put into the SAR role only question is how does the coast guard afford such a pricey toy .
Это слишком не надёжно. Большая вероятность аварии, данный аппарат может использоваться только в военных целял.
@@hello_workit’s not unreliable at all. Osprey has a safety record equal to most other helicopters. The price won’t be that outrageous
That optical illusion is called the rolling shutter effect. its caused by the inter-meshing of the frame-rate and the RPM of the propeller.
What about the shadows of the rotor?
I wonder if it has the rotor driveshaft through the wing like the V-22. The reason why the V-22 won the contract was that it can land if a one motor dies. Although it can't keep flying like a helicopter with one engine, it can fly in airplane mode but will be forced to land when the engine goes into vertical mode (the props are too big to land as an airplane)
Same basic idea but a straight wing and the engines don’t tilt but otherwise pretty much the same idea
Its been ten years now and still not clear if it already has its ratings approved
The cool thing about CMOS cameras is that you can see the propellers in slow motion without having the feature active.
Is this a prototype? Or an in-service aircraft PreFlight and run up seem excessively long
If it can't get in the air it'll just be a flaming hulk on the ground. Short take off applies to time as well as space
How many licences does the pilot need to have? A chopper licence and fixed-wing one?
7
Manbearpig is real I'm cereal
4:55 is why you are here.
Saved my time bro
Wow to rotor..
i love flying these in my sim games they are just so awesome to fly and its hard dont get me wrong but the feeling after u land is just so saticfying :D
..."The rotors seem to slow down when the real speed in the opposite direction actually increases."....
Effet sroboscopique ! ....
نثح1ع1سسهيشحسحححصخبزشثبمنصمك
"this lengthy video"...lengthy indeed...I have taken a nap in between.
>>> The rotors seem to slow down
>>> when the real speed in the opposite direction actually increases.
Perhaps due to "resonance" with the video frame rate
i.e. the rotor speed might be near multiples of 30fps
I am wondering how this thing can land, I do not mean crash but land, if there is a single engine failure while at flight. --- I mean, it is obvious, it will crash when in hover mode and an engine fails. But what when flying like a plane and an engine fails. Because of the rotor size it cannot land like a normal airplane, since no high forward flying landing speeds. Is one engine still enough to not crash on a landing strip, or does that mean that in both operation modes, hovering and flying, a crash is inevitable with a single engine failure?
Toujours pas en service en 2022 ?
128 pirla che mettono pollice verso.....invidiosi che un azienda italiana precisamente del varesotto, e' riuscita a creare questo gioiello tecnologico....
Grazie ai tanti talenti italiani che stanno lavorando a questo magnifico convertiplano
e so pirla davvero
those blade tip vortices are so cool i never seen that before!
Your shutter speed is the source of the slow motion rotors. Try experimenting with that as it makes a significant difference in the end product. It's a shame that opportunity to film this aircraft in a realistic manner was lost.
@Myrtone Well, I took the video. It would be a bit hard to pilot the craft at the same time.;-) Actually, I just find the technique fascinating to get such an aircraft into the air and safely back down as well.
Hi, why fans appear to be moving very slow.
@@pp1studios868
Propellers
And it's due to the frame rate of the camera
@@StaceyIsles saw a video of a twin engine prop plane with the same effect, but in that it looked like the propellers where stationary, like the engines weren't running.
@@mustang6599
That's some high frame rate
Do you have the links to the video?
@@StaceyIsles www.reddit.com/r/oddlysatisfying/comments/aoikrt/this_plane_taking_off_with_the_propellers/
They are variable pitch ofc... It's simple, look at the prop spinners, they have cutouts in them. :) Every modern craft except very small civ aircraft has variable pitch propellers to control the load on the engine.
re: Connor Vaughn - I'm in line with your thinking. Just how does the pilot cope with c of g fluctuations whilst in hover mode ? Either there's an incredibly sensitive auto pitch system, or NOBODY'S allowed to visit the john !
OMG this video was in the RC Model airplanes list. And when I saw the taxi guy walk around the airplane, I thought all this was RC operated.🤭
RC? Red Crucible Firestorm?
I thought it was RC (Radio Controllled) first as well, I recognized the Air strip from the giant sized RC Models video!!!!
Wow!!
I suggest you read a wikipedia article "Helicopter flight controls" to learn what a governor is.
Beautiful aircraft.
The "effect" is due to the rotor RPM nearing the shutter speed of the camera. That is why it seems to slow down, stops and then reverses.
Britain had one of these flying in the 1960's. It's nothing new. It was scrapped at least in part because it was extremely noisy. Otherwise the concept of these craft is to land like a helicopter yet have the speed of a fixed wing aircraft in conventional flight.
స్మాల్ కాదు ఒక మనిషి పైకి లేవడానికి ఎంత సమర్థ్యమో అంతే కరెంట్ ని మనం ఎంత కావాలంటే అంతే సెట్ చేసుకుంటామా అలాగే యంత్రం ఒక మనిషి కి సరిపోయే అంత యంత్రం అంతే. సౌర విద్యుత్ వుంది ఒకమనిషి ఈజీ గా ముందుకు వెళ్ళవచ్చు. అనీ అభిప్రాయం. 🤗🤗🤗🤗🤗🤗🤗🤗🤗
Osprey's brother.
No the v-280 valor is the brother of the osprey
This is more a child of both
The problem with this type of aircraft is that a loss of one engine is catastrophic.
It's amazing how it can fly when the rotors spin so slowly lol.
They are not rotating slowly 😑!!!
They are rotating at such a high speed that you eyes cannot capture it's image at every instant and for which it appears to be rotating slowly 😑😑
Tamoghna Karmakar Haha I know, I was just kidding.
And also at wrong direction! Cool illusion.
It is...I was wondering why he wasn't ramping-up the rotor speed...until I realised what was happening!
Z. V
វ
How hard is it to fly as compared to a plane or helicopter?
Yes, I meant the pitch of the plane. It must have cyclical control like a helicopter. It must have collective too, because the turbine would not be responsive enough.
That's strange, the serial number is American (N) but the insigna is the Italian Air Force's
BA-609 - B (Bell, USA) A (Agusta, Italy) Its a joint venture project. Flight test aircraft will be US registered for certification, but may be in the colours of prime future customers (e.g Italian Air Force)
I guess if you rotate your propellers backwards slowly enough you can hover, ill have to try that sometime
Great the way it tilted the rotar to take turn
I don't understand how it balances the pitch axis. Does the wing move along the plane? What if they load it, does it not drop its tail?
Can this thing start its engines one at a time?
Thanks for this video (all of it)) well worth watching
@bigbeartr57: I actually rather hate this effect as it gives a completely wrong impression of what is actually happening. May be fine for teaching the phenomenon, but that was not my intention here.
New version coming soon i think may be?
V22ospray??
I wonder which system is more efficient and better than other, one the system is, like this, rotating engine with propellant part together, or like Bell, rotating propellant part and gear only, the engine part stays.
Woooow amazing 👍
Should the guy be standing under the props while the props are being tested?
So yes? :P
If so, that would be quite complex. I reckon this way is much more efficient, because it optimizes possibility. It can move master than a heli, and it is as manoeuverable.
Is it copy of V-22 Osprey?
Thank you this video Amazing
Commercial/private conversion of the military Osprey?
So unique & so beautiful
Why would Switzerland bother with this design? It's rocking from side to side while hovering is a clear indication of instability. The Russian Ka-226 would've been a good alternative.
is she modeled after the us offspra. or how ever ya spell it lol
Osprey?
No. The Osprey was derived from the XV-15. The '609 is supposed to be the production version of the XV-15, so this is an earlier generation aircraft.
Wonderful tecnology
In 1960-70....jet thrusters on gimbal system way newer and safer....🤔🇩🇪🇺🇸👎🏽
The blades are spinning the wrong way it would be pulling it down?
For one second. I’m like how can it lift itself like that.
What if one motor fails?
Does anyone know what the price range is gonna be on one of these?
Lol. If ya gotta ask ....
Que hermoso gracias adiós por la sabiduría que aspermitido a que el hombre pueda de sarrollar sus conocimientos
I always was a fan of that concept! Don't know, why it never was successful?
+Altenholz The tilt rotor? Incredibly expensive, has a little problem with crashing... There's a lot of problems with the tilt rotor that are well documented
The LORD saith that the propellers should be at the bottom, opposite to what it is at this point, i.e., upside down.
What are those ring that looks like born in the tip of the propeller and go to the center?
Do you mean engines inside the fuselage?
isn't only awesomer, IT'S AMAZING
I would love them hills in the winter and a sled.