Piasecki video of the X-49A "Speedhawk" - a Sikorsky YSH-60F modified with wing and vectored-thrust ducted propeller for propulsion and control
Пікірлер: 134
@Avilator18914 жыл бұрын
@FJones9508 As they go faster, they have to slow down the main rotor because the advancing blade would go over mach 1. This reduces the lift from the rotor, so the wings are needed. Retreating blade stall is also an issue, but I think the advancing blade going over the sound barrier is more of an issue because it can cause violent vibrations.
@angmhalp16 жыл бұрын
Look up the AH-56 Cheyenne. It had wings and a pusher prop and moved out at 244mph!!! that was in 1967!!
@The_Osprey14 жыл бұрын
The tail rotor provides thrust and the wings provide lift unloading the main rotor allowing for 50% faster flight, twice the range, less vibration and more maneuverability according to the Piasecki website.
@jonthedoors14 жыл бұрын
Very strange!! It looks tail-heavy on takeoff and landing, but seems to fly pretty well. I'm guessing thrust vectoring to the left couter-acts the torque, like a normal tail rotor...
@alanlenon15 жыл бұрын
Awesome! I just love it!
@kwakaholic15 жыл бұрын
interesting, thanks for posting.
@musewolfman16 жыл бұрын
if you look close, you'll notice that it was the first takeoff. The pilot was probably just trying to get used to a different flight configuration.
@theworacle16 жыл бұрын
the idea is to shift lift from the rotor to the wing and thrust from the rotor to the ducted propeller, that way the rotor blades can operate at lower pitch, delaying the stall
@saxmastergq13 жыл бұрын
interesting concept.
@videowatchaccount16 жыл бұрын
177 knots is 203.6 MPH. Not fast today, but up there for the time.
@kblackav8or15 жыл бұрын
I believe the point of this is to eliminate the tail rotor and get more speed - 2 for 1 deal. They haven't come close yet to the potential of the system. I believe the AH-56 had a tail rotor along with it's pusher prop.
@qunniq14 жыл бұрын
@FJones9508 yes, designed to compensate lift as blades start stalling
@discofishing13 жыл бұрын
@thekaizer666 they've done that in tests. I believe a turbofan engine was put on a UH-1 and it flew pretty dang fast.
@theworacle17 жыл бұрын
The wing and thruster offload the rotor, so it can operate at lower angle of attack, but retreating-blade stall still limits the speed to around 200kt
@theworacle16 жыл бұрын
They hope to get over 200kt once the clean the helicopter to reduce drag - make the gear retract and put a fairing round the rotor hub. The vectored thrust ducted propeller does the job of the tailrotor using "visor" vanes that defect the propeller thrust
@osofitz14 жыл бұрын
intresting design, i wonder how much weight that new tail design adds
@theworacle16 жыл бұрын
the big question is how to provide thrust and counteract the torgue from the turning rotor - this one solution
@SilverHamer14 жыл бұрын
I guess this one doesn't have any stabilator problems then...interesting concept. I wonder how fast it will go...
@theworacle16 жыл бұрын
the wings unload the rotor at high speed, stops the retreating rotor blade from stalling, which is what limits the speed of a helicopter
@FLCL201416 жыл бұрын
yes its at the boeing flight facility there.
@DJ0JJ16 жыл бұрын
Ok, this concept is good, but I think that they are working with the wrong airframe. The vectored-thrust ducted propeller (VTDP) in a helicopter is a nice idea. But if you look at the test, when the Speedhawk is at low speeds looks like its tail gives too much weight. So I say that with other mainframe it could be better balanced to the VTDP.
@Chopper89417 жыл бұрын
My first thought after viewing this was.."whats the point" my second was "the CG looks too far aft". My third was I get it, extra forward speed but wondering if the limitations posed by retreating blade stall still apply? I think the answer is yes. I wonder how well it flys backwards.
@theworacle16 жыл бұрын
That was the original idea - and why the X-49A is a modifired Navy SH-60F prototype - they needed the thruster to help pull the mine countermeasures sled through the water. But the Navy seems to have lost interest and now the Army has taken the lead - looking at it to improve the performance of the Black Hawk...maybe
@Back7sword15 жыл бұрын
So this helicopter uses a rudder to counter torque? Love this thing. Looks sharp too. Name change to "Manta".
@82ndairborne10012 жыл бұрын
I hope they put this in service!
@383mazda14 жыл бұрын
wonder how much lift the wings give it as speed... since helicopters are limited to / don't produce symetrical lift around 180mph
@Cognetto13 жыл бұрын
Begining stages of the Swordfish II mono racer?
@cushancu16 жыл бұрын
What are you talking about?... The fan on the back is shaft driven, probably by the exact same H-60 drive line. Regardless, H-60s always hover in a nose up attitude. It might lose about 2% of the lift that is produced by the canted H-60 tail rotor which accounts for approximately 400lbs.
@ezgigs16 жыл бұрын
This is the answer to the sled they are using on the east coast, am i correct? Because the sled is so damn heavy, the Sierras need more umph.
@Alexpaths16 жыл бұрын
i wonder how well this thing auto rotates?
@LTF8519916 жыл бұрын
Hey, do you know the new max speed with that setup, also post its original speed if you know; to see the gain.
@humexavier16 жыл бұрын
Could you put double magnetic roters under helicopter just small enough to change direction. Magnetic roter is for better oppisite magnetic pull offering better spin gyro control. Are bi-wings coming back.Yes though magnetized on both wings and bottom wing is smaller than top wing for better control and enhanced, at higher distances.
@dfrss14 жыл бұрын
that heavy tail give aditional speed for hawk?
@TakNuke5 жыл бұрын
For single rotors it's better to use a fenstron plus a pusher propeller.
@marktimmer221214 жыл бұрын
i like
@urigotliv14 жыл бұрын
how it doesnt autororate without tail rotor?
@jbuzzkirk14 жыл бұрын
Hey sarge? How ummm.......how do I do the tension check?
@discofishing13 жыл бұрын
@CessnaAviator317 how can you say that from a youtube video?
@undertake78216 жыл бұрын
Isn't there a type of rotor design allowing the helicopter to fly like 300+ besides the tilt rotor? I think it was a British design.
@euzzi16 жыл бұрын
was this in new castle, de ?
@Kelly437014 жыл бұрын
Where is the anti-torque rotor?
@CessnaAviator31713 жыл бұрын
Anyone notice it's louder also?
@Kelly437014 жыл бұрын
Where is the Anti-torque rotor?
@archangel67016 жыл бұрын
damn thats rather clever they ducted the second rotor to focus the force of it not only does it counter the top rotor, but it helps push the craft faster, the wings on it help create lift which means that they could put a crap load of munitions on the wings gun pods or missles the theres several things about this helicopter makes me think this is their answer to our apache gunship the blades at startup look an awful lot like the apache blades the landing gear screams apache lol very clever
@Gunnanmon14 жыл бұрын
@AJN912 So is the rest of the helicopter...
@theworacle17 жыл бұрын
The navy was interested, to allow the Seahawk to haul the mine-countermeasures sled, but changed it's mind
@hughsmith72812 ай бұрын
Newark, DE.
@Simbirsk213016 жыл бұрын
That is a cool thing. However it is louder than a usual helicopter, in fact it sounds like a propelled plane combined with the usual sound of the main rotor.
@NicCipriani15 жыл бұрын
Updated Blackhawk, not Cheyanne
@therichardking424212 жыл бұрын
It was just a test bed. Sikorsky has moved on to the X2
@cushancu16 жыл бұрын
It hovers, hover taxis and lands like every other H-60 airframe I've ever seen. Whether it's a Blackhawk, PaveHawk, JayHawk or SeaHawk.
@PoisonBill13 жыл бұрын
But, Will it Blend?
@biipolaar15 жыл бұрын
It looks like a modern use of the autogyros technology
@Loctambule13 жыл бұрын
I've got the same air fan on my computer
@fndjfgsdk14 жыл бұрын
whats wrong with normal helicopters?
@ihateforigners15 жыл бұрын
wow it goes the same speed as a regular blackhawk
@okrajoe6 жыл бұрын
Looks sleek...
@atillayilmaz283412 жыл бұрын
fon müziğinin ismi lütfen
@StrEagle16 жыл бұрын
Gyrocopter?
@atillayilmaz283412 жыл бұрын
name of music, please
@deimos2k613 жыл бұрын
not a good idea for military purposes, but it could find some chanses for commercial flights...
@atillaylmaz600910 жыл бұрын
music please
@Riplure12 жыл бұрын
its slower than a regular blackhawk
@MightySaturn515 жыл бұрын
Lockheed?...the RAH-66 Comanche was a joint Sikorsky-Boeing craft.
@jakem190014 жыл бұрын
y would u do this what use is it its no better than a tail roter
@dankinusmc114 жыл бұрын
this and the carter copter are the two designs that will replace the traditional helicopter as we know them today. The question is wich will become a proven technology first.
@HEINZUNIMOG16 жыл бұрын
verry simalur to the auto giro concept
@PingCrack15 жыл бұрын
You see in the first scene tha the tail its to heavy But the Speed is good...
@mustang68415 жыл бұрын
yea
@monneratrj14 жыл бұрын
lol that chopper have some "balls" lol its even hard for it to take off lol
@CreoleCommando14 жыл бұрын
Today's Helos have reached their peak in performance & range etc, its time to write a new chapter in vertical aviation, I predict the US army will NEVER use such an aircraft in its service nor will the other branches. Anyone ever heard of the Chinook with a similar type of wing to this bird? much better performance than WITHOUT the wing! it was NEVER used.
@theworacle16 жыл бұрын
177kt is as fast as they will go until they fit retractable landing gear and a rotor hub fairing - then they will push for 200kt
@Maphisto8613 жыл бұрын
@Henky1234 It can fly higher and farther.
@LTF8519916 жыл бұрын
Looks like its a bit tail heavy!
@TyCarp0715 жыл бұрын
it is a Sikorski
@charliboy1516 жыл бұрын
looks awsome but the tails a little to big. that could cause accidents
@undertake78216 жыл бұрын
The wings look like they add dead weight, I think they should remove the wings.
@MightySaturn515 жыл бұрын
agreed cush
@OutramTea12 жыл бұрын
It's like a flying brick which can move side to side.
@HeXnoXHax16 жыл бұрын
All new is well forgotten old. In this case Autogyro or gyroplane
@DYLAV8R13 жыл бұрын
@Henky1234 as well as fly faster, as well as bank angles and some other things
@projekt6_official14 жыл бұрын
Pretty badass, but looks a little tail heavy.
@irkiIIer8 ай бұрын
im back here after 15 years, saw this video first in 08 when i would watch 2003 iraq war videos i remember watching that patton video with the american flag behind him talking about the war in iraq and how terrorists will cut off the power to the xbox or some shit like that
@bo64hellfire13 жыл бұрын
@ivnuzi I'd imagine that the guys who... you know ...get paid...to...well...design shit.. took all that into account...and ...well... what's the word... uh.... engineered it... in such a way to... well... fly... and like... being a helicopter... hover. As for it's practicality and effectiveness... well, you won't know until you build an experimental aircraft...
@XLR8RV16 жыл бұрын
hehe!yep
@Bow-to-the-absurd16 жыл бұрын
i would.
@Fi1del15 жыл бұрын
looks alot like Sikorski UH-60
@arbitar22216 жыл бұрын
damn to much w8 on the bak but i like mi old air craft that we have in the air now
@Helge12916 жыл бұрын
FAST. That's all you gotta know ;)
@benkenobi199016 жыл бұрын
i think they kinda over thought that one
@sciom100111 жыл бұрын
yeah but then again the hole thing is designed to be super fast.
@dimovskigoran15 жыл бұрын
prototip !
@Bidimus116 жыл бұрын
Not a totaly new idea either Google AH-56_Cheyenne Attack Compound Aircraft.
@Cleared_To_Land16 жыл бұрын
165 knots Straight and level is not impressive, considering I do that in an s-70a-9. Oh, and i have done 180 knots in a small dive with a 28 knot tail wind.. so i actually had approx 208 kts ground speed!!!! Ok, I'll shut up now.. I know the speedhawk will go faster with further testing.
@XLR8RV16 жыл бұрын
poor thing the other blackhawks are never gonnalet him live this down.lol
@24nomatter16 жыл бұрын
what an odd looking helicopter. If lockheed only continued the RAH-66 Comanche project, we wouldn't need this kind of design.
@LionsBrain15 жыл бұрын
i think that normal helicopter's speed is same like that's....SPEEDHAWK... It's not so fast