1 Demonstrating the Third Generation Tiltrotor Society of

1 Demonstrating the Third Generation Tiltrotor Society of Experimental Test Pilots | 25 October 2014 This research was partially funded by the Government under agreement No. W 911 W 6 -13 -2 -0001. The U. S. Government is authorized to reproduce and distribute reprints for Government purposes notwithstanding any copyright notation thereon. The views and conclusions contained in this document are those of the authors and should not be interpreted as representing the official policies, either expressed or implied, of the Aviation Applied Technology Directorate or the U. S. Government. Ó 2014 Bell Helicopter Textron Inc.

Definitions V-280 Valor is the Bell Naming Convention for 3 rd Gen Tiltrotor Effort JMR – Joint Multi-Role BAA FVL – Future Vertical Lift TIA MPS FVL ICD Science & Technology (S&T) MPS Model Performance Specification Program of Record (Po. R) AVCD Air Vehicle Concept Demonstrator 2 JMR TD REDUCES RISK FOR FVL Ó 2014 Bell Helicopter Textron Inc.

Industrial Base - Teammates • Teammates bringing the engineering resources, capabilities, and critical thinking to advance the design and technology maturation. Mission System Architecture and Mission Equipment Packages V-Tails Flight Control System Fuselage Engine Support Elastomerics Over-Wing Fairing Electrical Hydraulics Fuel Ó 2014 Bell Helicopter Textron Inc.

Voice of the Customer Speed, Range, Payload, Reliability, Survivability Affordability Hover Maneuverability High Hot Operations Sustainability Commonality Science & Technology (S&T) Program of Record BELL’S TECHNOLOGY DEMONSTRATOR TO ADDRESS THESE CAPABILITIES 4 Ó 2014 Bell Helicopter Textron Inc.

TRANSFORMATIONAL AGILITY vs. UH-60 Radius at 6 kft/95ºF 5 Ó 2014 Bell Helicopter Textron Inc.

TRANSFORMATIONAL REACH vs. UH-60 Range at Sea Level 6 Ó 2014 Bell Helicopter Textron Inc.

Footprint Comparison 7 Ó 2014 Bell Helicopter Textron Inc.

MPS & Variants MPS Updates Attack Common Fuselage 30 mm nose gun Internal Weapons Bays • Fwd Bay – Fwd Firing, Deploys Outboard • 2 Aft Bays - Lateral Firing Marinized 8 Ó 2014 Bell Helicopter Textron Inc.

Concept Demonstrator Superior Low-Speed Maneuverability Advanced Rotor and Drive System Low Disk Loading 2 Pilots / 2 FTEs Fly-By-Wire Non-Rotating Fixed Engines Large Side Door Conventional Retractable Landing Gear VTOL MODE 9 Ó 2014 Bell Helicopter Textron Inc.

Concept Demonstrator V-Tail with Ruddervators High Aspect Ratio, Straight Wing (Large Cell Carbon Core) Cruises at 280 knots Turboprop-like Ride Quality Superior High-Speed Handling Qualities Advanced Composite Fuselage CRUISE MODE 10 Ó 2014 Bell Helicopter Textron Inc.

Wing Design for Manufacture Affordability Characteristics • Semi-Monocoque design (large cell carbon core) • No skin stiffening details/ fasteners • Straight wing (few splice details) • Broad goods lay up with reduced pad ups • Bonded continuous skin assemblies • Minimal ply drops • Bonded LCCC rib assembly • Tooled interfaces – reduced shimming • Determinate assembly • Point of use material dispensing • Minimal compactions REDUCED COMPLEXITY, FEWER PARTS, LOWER COST 11 Ó 2014 Bell Helicopter Textron Inc.

Rotor- Building on Experience Proven Configuration • • • 3 Bladed Stiff In-plane Underslung Gimbaled hub Variable speed Key Technologies • Lightweight carbon blades • 25% cost savings • Broad goods yoke • 40% cost savings ADVANCED TECHNOLOGY IMPROVES VALUE AND PERFORMANCE OF COMBAT PROVEN ROTOR CONFIGURATION 12 Ó 2014 Bell Helicopter Textron Inc.

Flight Control System - Overview • • • Full-authority digital fly-by-wire flight control system Triplex electronic & hydraulic systems Systems Integration Lab development & testing ADS-33 Level I handling qualities (low-speed operations) Flight envelope protection • Structural load limiting • Conversion corridor protection Active Rotor Flapping Control For Low Speed Maneuverability Pylon Conversion Ruddervator Control Flaperon Control Integrated Engine Control Tail Wheel Steering Swashplate Control Sidearm Controls Flight Control Computers 13 Ó 2014 Bell Helicopter Textron Inc.

Hover / Low Speed Maneuver Hover Yaw Quickness: ØBased on Control Power/Inertia ratio ØTiltrotor configuration = large Izz ØIncreased control power – Ø Meets anticipated ADS-33 Level 1 yaw quickness Low Speed Maneuverability: ØMPS Requirement is 1. 4 g (45 bank) constant altitude turn at 80 kt, with reserve to accelerate ØRequirement intended to size rotor & engine ØTiltrotor solution utilizes wing lift and thrust vectoring to meet spec with lightest rotor and minimum power required 14 Ó 2014 Bell Helicopter Textron Inc.

Demonstrator Mission Crew: 4 Payload: MPS Representative 229 nm mission radius 15 Ó 2014 Bell Helicopter Textron Inc.

Demonstration Goals In priority order: 1. Accomplish First Flight 2. Demo 280 KTAS 3. Expand to 6 K/95 HOGE 4. Evaluate agility, loads, and vibes 5. Demo high altitude VTOL capability 6. Validate mission performance radius and range capability 7. Perform demo flights 8. Demo operational capabilities – simulated fast rope, slung loads, PDAS situational awareness, MTEs, slope landings, simulated air refueling 9. Demo STOL with build-up to MTOGW 10. Collect additional data for model validation – high altitude, high speed, cg extremes Env Exp 1 Env Exp 2 Demo Ó 2014 Bell Helicopter Textron Inc.

Flight Envelope Build-up Approach Ó 2014 Bell Helicopter Textron Inc.

Third Generation Tiltrotor Exceptional capability • Speed, range, payload, survivability Manageable technical risk • Proven technology • Major cost and performance improvements Total ownership cost • Unprecedented fuel efficiency • Greatest operational productivity • Proven commonality with variants THE NEXT GENERATION OF VERTICAL LIFT: TWICE AS FAST, TWICE AS FAR 18 Ó 2014 Bell Helicopter Textron Inc.

Questions? 19 Ó 2014 Bell Helicopter Textron Inc.