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Boeing/Sikorsky ‘Defiant’ Joint Multi-Role (JMR) Helicopter: Coaxial/Dual-Rotor Compound Helicopter for U.S. Military Special Operations Forces (SOF)

Boeing/Sikorsky ‘Defiant’ Joint Multi-Role (JMR) Helicopter: Coaxial/Dual-Rotor Compound Helicopter for U.S. Military Special Operations Forces (SOF)

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pf button both Boeing/Sikorsky Defiant Joint Multi Role (JMR) Helicopter: Coaxial/Dual Rotor Compound Helicopter for U.S. Military Special Operations Forces (SOF)

By David Crane
defrev (at) gmail (dot) com

The following article is property of DefenseReview.com (DR) and is copyrighted material. If you are reading this article on another website other than DefenseReview.com, please email us the website address/URL (where the unauthorized DR article reprint is located) at defrev (at) gmail (dot) com. Thank you.

Photo(s) Credit: Sikorsky (Top/First) and DefenseReview.com (Rest). All DR photos and videos were shot with a Sony Cyber-shot RX100 (DSC-RX100/B) Digital Camera with 20.2 MP (20.2-megapixel) still camera and 1080p HD video camera capability.

October 22, 2013

Sikorsky Defiant Joint Multi Role JMR Helicopter Dual Rotor Compound Helicopter 1 Boeing/Sikorsky Defiant Joint Multi Role (JMR) Helicopter: Coaxial/Dual Rotor Compound Helicopter for U.S. Military Special Operations Forces (SOF)Fox News just published an article on the Boeing/Sikorsky 'Defiant' Joint Multi-Role (JMR) helicopter prototype, which is a coaxial/dual-rotor compound helicopter that was just introduced at AUSA 2013. Defiant is seemingly based on the Sikorsky X2 Technology Demonstrator and S-97 Raider coaxial/dual-rotor compound helicopters, which DefenseReview (DR) has written about and subsequently examined and photographed at military defense industry exhibitions, including the 2013 NDIA Special Operations Forces Industry Conference (NDIA SOFIC 2013) (see accompanying photos).

The Sikorsky X2 compound helicopter is an impressive-looking aircraft, however it curiously doesn't utilize fixed wings like the Lockheed AH-56 Cheyenne compound attack helicopter did. The Cheyenne compound attack helo's fixed wings not only provided mounting platforms for weapons, but also provided up to 80% lift at speed, taking all that lift stress off the main rotor. So, DR is skeptical about Sikorsky's decision not even to go with shorter wings, but rather to actually do away with them altogether. This looks like a mistake on the surface, but we're going to try to get in touch with Sikorsky engineering team to get their reasons for the omission on the X2 and Defiant JMR helos. It's possible that the aircraft's body, itself, acts as enough of a lift surface to compensate somewhat, but nothing can replace AH-56 Cheyenne-type long fixed wings for the combination weapons mounting and lift capability.

The primary questions Defense Review has about the Sikorsky Defiant JMR compound helicopter are the top speed, cruising speed, load capacity, and personnel capacity. The Sikorsky X2 achieved 250 knots (287.69 mph) in level flight at 70% power in 2010, which is very impressive, so DR would imagine the Defiant at least comes close to that.

It will be interested to see how far the Defiant program gets with sequestration in place. Time will tell.

Sikorsky X2 Technology Demonstrator Dual Rotor Compound Helicopter K. Bredenbeck Chief Test Pilot 007 SOFIC 2013 David Crane DefenseReview.com DR 10 Boeing/Sikorsky Defiant Joint Multi Role (JMR) Helicopter: Coaxial/Dual Rotor Compound Helicopter for U.S. Military Special Operations Forces (SOF) Sikorsky X2 Technology Demonstrator Dual Rotor Compound Helicopter K. Bredenbeck Chief Test Pilot 007 SOFIC 2013 David Crane DefenseReview.com DR 2 Boeing/Sikorsky Defiant Joint Multi Role (JMR) Helicopter: Coaxial/Dual Rotor Compound Helicopter for U.S. Military Special Operations Forces (SOF)

Sikorsky X2 Technology Demonstrator Dual Rotor Compound Helicopter K. Bredenbeck Chief Test Pilot 007 SOFIC 2013 David Crane DefenseReview.com DR 8 Boeing/Sikorsky Defiant Joint Multi Role (JMR) Helicopter: Coaxial/Dual Rotor Compound Helicopter for U.S. Military Special Operations Forces (SOF) Sikorsky X2 Technology Demonstrator Dual Rotor Compound Helicopter K. Bredenbeck Chief Test Pilot 007 SOFIC 2013 David Crane DefenseReview.com DR 5 Boeing/Sikorsky Defiant Joint Multi Role (JMR) Helicopter: Coaxial/Dual Rotor Compound Helicopter for U.S. Military Special Operations Forces (SOF)

Sikorsky X2 Technology Demonstrator Dual Rotor Compound Helicopter K. Bredenbeck Chief Test Pilot 007 SOFIC 2013 David Crane DefenseReview.com DR 6 Boeing/Sikorsky Defiant Joint Multi Role (JMR) Helicopter: Coaxial/Dual Rotor Compound Helicopter for U.S. Military Special Operations Forces (SOF) Sikorsky X2 Technology Demonstrator Dual Rotor Compound Helicopter K. Bredenbeck Chief Test Pilot 007 SOFIC 2013 David Crane DefenseReview.com DR 3 Boeing/Sikorsky Defiant Joint Multi Role (JMR) Helicopter: Coaxial/Dual Rotor Compound Helicopter for U.S. Military Special Operations Forces (SOF)

Company Contact Info:

Sikorsky Aircraft Corporation (SAC)
800-946-4337
800-WINGED-S
Email U.S. Military Sales: [email protected]
Email Commercial/Intl. Sales: [email protected]
Email Customer Service Engineering: [email protected]
Website: http://www.sikorsky.com/

Paul Jackson
Communications Director
Sikorsky Aircraft Corp.
Office Phone: 203-386-7143
Email: [email protected]

Marianne Heffernan
Communications Manager
Office Phone: 203-386-4373
Email: [email protected]

Aurora Flight Sciences (AFS)
9950 Wakeman Drive
Manassas, VA 20110
Office Phone: 703-369-3633
Fax: 703-369-4514
Website: http://www.aurora.aero/

Tom Clancy
Advanced Concepts and Tactical Systems
Aurora Flight Sciences (AFS)
9950 Wakeman Drive
Manassas, VA 20110
Office Phone: 703-331-1053
Fax: 703-369-4514
Email: [email protected]

Javier de Luis
Research & Development (R&D)
Aurora Flight Sciences (AFS)
One Broadway 12th Floor
Cambridge, MA 02142
Office Phone: 617-500-4800
Fax: 617-500-4810
Email: [email protected]

Patti Woodside
Public Relations (PR)
Aurora Flight Sciences (AFS)
9950 Wakeman Drive
Manassas, VA 20110
Tel: (703) 396-6304
Fax: (703) 331-1080
Email: [email protected]

Lockheed Martin Corporation, Lockheed Martin
6801 Rockledge Drive
Bethesda, MD 20817-1803
Phone: 301-897-6000
http://www.lockheedmartin.com

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Boeing/Sikorsky ‘Defiant’ Joint Multi-Role (JMR) Helicopter: Coaxial/Dual-Rotor Compound Helicopter for U.S. Military Special Operations Forces (SOF) by
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About David Crane

David Crane started publishing online in 2001. Since that time, governments, military organizations, Special Operators (i.e. professional trigger pullers), agencies, and civilian tactical shooters the world over have come to depend on Defense Review as the authoritative source of news and information on "the latest and greatest" in the field of military defense and tactical technology and hardware, including tactical firearms, ammunition, equipment, gear, and training.

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