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555


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Sikorsky X2
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http://www.foxnews.com/scitech/2010/09/16/double-bladed-chopper-flies-

A wild new design for helicopters is proving successful -- and may set an official air speed record.

According to Sikorsky, which manufactured the futuristic X2 helicopter, the chopper flew a blistering 250 knots during testing on Wednesday, and reached 260 knots (or 300 mph) during a controlled dive.

"The aerospace industry today has a new horizon," said Sikorsky President Jeffrey P. Pino. "The X2 Technology demonstrator continues to prove its potential as a game-changer, and Sikorsky Aircraft is proud to be advancing this innovative technology and to continue our company's pioneering legacy."

The old rotary-wing air speed record of 249 miles per hour had been set in 1986, and the new design clearly exceeds those speeds, having already bested the quarter-century old record handily in early August -- earning it the unofficial title of fastest helicopter on the planet.

But without a representative from the the National Aeronautic Association on hand, the official record for a helicopter still belongs to the British-made Westland Lynx ZB-500, flown by John Egginton in 1986, at a paltry 216 knots, or 249 mph.

"Our primary key performance parameter has been met," said Jim Kagdis, Program Manager for Sikorsky Advanced Programs. "The 250-knot milestone was established as the goal of the demonstrator from its inception. It's exciting to imagine how our customers will use this capability."

How fast it will ultimately go still remains to be seen.

"The aircraft is doing a little better than predicted," the chief test pilot said in a conference call with reporters, adding that the X2's top speed could be 15 knots faster.

Ultra high speeds have traditionally posed problems for helicopters due to the complex aerodynamics of moving rotor blades, such as those on the tail that counter the torque of the main rotor. Sirkorsky has addressed this issue with a six-blade, rear-facing propeller that generates thrust in a manner similar to fixed-wing aircraft.

Most important, Sirkorsky has been able to integrate these speed enhancements without compromising other flight qualities such as hovering, handling, and smooth transitioning from low to high speeds.

Sirkorsky believes that there will be many relevant applications for a well-rounded high speed chopper, such as high speed transport in remote locations. But at this time there are still no plans for a production version.


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Leela25


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biggrin


Sikorsky is to build two prototypes of what it is calling the X2 Raider, to further its bid to develop a high-speed, coaxial-rotor light tactical helicopter to replace the U.S. Army's OH-58D Kiowa Warrior armed scout.

The new helicopter, designated the Sikorsky S-97, is planned to fly in 2014. Like the company's X2 Technology demonstrator, which has exceeded 250kt in flight tests, the Raider will be equipped with rigid coaxial rotors, pusher propulsor, integrated powerplant and fly-by-wire.

More details after a Sikorsky press conference at 11.00 today (Oct. 20).


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Stingray


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Topic renamed for general discussion on the X2.

And thanks for sharing this great news, Leela! I've been waiting a long time to see a military version built (even if it is only a mockup). Yay for progress!


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Leela25


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Sikorsky's press release:

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555


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From Vertiflite, 2010:



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Commander31


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Looks like the XH-59A is still cookin' though. biggrin



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555


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Commander31 wrote:

Looks like the XH-59A is still cookin' though. biggrin

 

Yea and the XH-51A.



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davh12


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555,

Good X2 footage. Thanx. I was wondering...I heard that the X2 is an "absolute rigid" rotor system.............how does it over come dissymetry of lift?


Dave

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Stingray


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davh12 wrote:

I was wondering...I heard that the X2 is an "absolute rigid" rotor system.............how does it over come dissymetry of lift?


You might find your answer in this very helpful article:

http://www.unicopter.com/0815.html



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Agent-Purple


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I'm glad to see success of the X2, it is the future of helicopters.

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Stingray


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Find by vstol...

http://www.aviationweek.com/aw/blogs/aviation_week/on_space_and_technology/index.jsp?plckController=Blog&plckBlogPage=BlogViewPost&newspaperUserId=a68cb417-3364-4fbf-a9dd-4feda680ec9c&plckPostId=Blog%3aa68cb417-3364-4fbf-a9dd-4feda680ec9cPost%3ae6c2886e-d967-4972-b8e7-bfe6ed3fb88e&plckScript=blogScript&plckElementId=blogDest

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Stingray


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Another image of the full-scale S-97 "Raider" mockup.

http://wordlesstech.com/2011/01/07/sikorsky-x2-vs-eurocopter-x3/�



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Stingray


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http://www.aviationweek.com/aw/blogs/defense/index.jsp?plckController=Blog&plckScript=blogScript&plckElementId=blogDest&plckBlogPage=

BlogViewPost&plckPostId=Blog%3a27ec4a53-dcc8-42d0-bd3a-01329aef79a7Post%3a34a68b55-3da7-4068-9589-e3526a6b2e23

Sikorsky's high-speed, coaxial-rotor S-97 X2 Raider (above) has changed slightly as it moves from full-scale mockup towards two flying prototypes. The latest artwork shows changes to the glasswork and the switch to a taildragger configuration with the retractable main gear upfront. The private-venture prototypes are scheduled to fly in 2014 and Sikorsky says an aircraft meeting the US Army's Armed Aerial Scout requirement would be ready to enter service in 2025.



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Commander31


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http://www.aviationweek.com/aw/blogs/aviation_week/on_space_and_technology/index.jsp?plckController=Blog&plckBlogPage=BlogViewPost&newspaperUserId=a68cb417-3364-4fbf-a9dd-4feda680ec9c&plckPostId=Blog%3aa68cb417-3364-4fbf-a9dd-4feda680ec9cPost%3aca16a87f-ade6-47a4-a043-523bfbadb861&plckScript=blogScript&plckElementId=blogDest

Oi, what a long link.



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scorpio213


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Eurocopter has responded to the X2 with their own concept the X3 which they hope will smash the X2's helicopter speed record



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Stingray


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Yep and see the thread on the X3 for more:

http://stingraysrotorforum.activeboard.com/t38465394/eurocopter-x3-protoype-response-to-sikorsky-x2/?r=222690



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scorpio213


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thanks travis



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Stargazer2006


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They even have an X4 project I heard. What next? The Chinese doing an X5? The Russian an X6? Be original guys!!

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Stéphane
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Hi Stargazer2006, the X4 patent is shown by Stingray here http://stingraysrotorforum.activeboard.com/forum.spark?aBID=126840&topicID=41570509&p=3



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Stingray


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From Triton, great pictures of the Sikorsky S-97 mockup:

http://ww1.sikorsky.com/sikorskypresskit/X2/media.htm



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Stingray


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From Flateric:

pre-final S-97 configuration patent

Rotary-wing aircraft with a common dynamic system/backbone structure Mark R. Alber et al
        
Patent number: D614559
Filing date: Sep 14, 2007
Issue date: Apr 27, 2010
Application number: 29/284,739

Inventors: Mark R. Alber, Benjamin Reed Hein, Alfred Russell Smiley, Timothy F. Lauder, William J. Eadie
Original Assignee: Sikorsky Aircraft Corporation
Current Assignee: Search USPTO Assignment Database
Primary Examiner: Lisa P Lichtenstein
Attorney: Carlson, Gaskey & Olds PC



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Stingray


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Also:

 

AERODYNAMIC INTEGRATION OF A PAYLOAD CONTAINER WITH A VERTICAL TAKE-OFF AND ... Mark R. Alber et al
        
Application number: 12/373,537
Publication number: US 2010/0012769 A1
Filing date: Jul 19, 2007


A vertical takeoff and landing (VTOL) rotary-wing air-craft is sized and configured to match a payload container such as a standardized Joint Modular Intermodal Container (JMIC). The aircraft may be an Unmanned Air Vehicle (UAV) that is capable of autonomously engaging and disengaging the container so that the aircraft can pick up and drop off the JMIC with minimum human intervention.
Inventors: Mark R. Alber, Brandon L. Stille, Alfred Russell Smiley



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Stingray


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From Triton:



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More:



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Stingray


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http://www.aurora.aero/Communications/Item.aspx?id=apr-284



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Stingray


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http://raider.sikorsky.com/ui/documents/RAIDER_Brochure.pdf



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Stingray


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Raider updates:

 



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Triton


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Sikorsky X2-family promotional videos uploaded by Rafael at Secret Projects forum.












-- Edited by Triton on Thursday 25th of October 2012 06:49:18 PM

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