6/28/2021

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            ANNOUNCING GAME CHANGING HELICOPTER DRIVE SYSTEM

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New helicopter Thrust Drive System vastly improves safety, performance, and economics and provides for the elimination of transmissions, tail rotors, and associated counter torque mechanisms, resulting in a significant reduction of associated costs and points of failure.

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U.S. patent issued and International patents have been filed for this exciting new reaction drive system. All patent rights are assigned to Thrust Drive LLC a Houston Texas company, wholly-owned by the DeWalch family which has a 30-year history of developing patented products.  Thrust Drive LLC is seeking relationships with entities that will commercialize the technology. The system uses a unique and powerful propulsion technique to deliver thrust through specialized aerodynamic tubes and nozzles to provide the propulsion to power the rotor blades.  See website www.ThrustDrive.com for 1/6 scale flight test videos illustrating proof of concept and for other comprehensive information.  Bill Chiles, well known helicopter industry leader, and current chairman of the international offshore safety organization, HeliOffshore, heads the advisory committee for Thrust Drive LLC.  Benefits of this new technology include:  

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• ELIMINATES TRANSMISSION, TAIL ROTOR, GEAR BOXES, DRIVE SHAFTS & TAIL ROTOR

       STRUCTURE ALONG WITH RELATED WEIGHT, COST, AND CRITICAL POINTS OF FAILURE

• VASTLY QUIETER AND MORE EFFICIENT THAN PRIOR REACTION DRIVE HELICOPTERS

• ADDITIONAL TIME TO LOWER COLLECTIVE PITCH DURING AUTOROTATION DUE TO THE HIGH INERTIA OF    THRUST DRIVE SYSTEM

• GREATLY ENHANCED AUTOROTATION CAPABILITY DUE TO SEPARATE DECOUPLING OF ROTORS 

• PROVIDES ENGINE REDUNDANCY

• LARGE DECREASE IN OPERATING, MAINTENANCE & MANUFACTURING COSTS

• ELIMINATION OF TAIL ROTOR DANGER, BOOM STRIKE/TAIL STRIKE

• IMPROVED POWER TO WEIGHT RATIO INCREASES PAYLOAD AND SPACE FOR PAYLOAD 

• EXISTING REGULATIONS, PILOT SKILLS, AND TAKEOFF/LANDING FACILITIES APPLICABLE 

• REDUCTION OR ELIMINATION OF VORTEX RING STATE

• COROTATING AIRFOILS QUIETER THAN CONVENTIONAL HELICOPTER

• ABSOLUTE VERTICAL TAKEOFF AND LANDING—SEE TEST FLIGHT VIDEOS 

• DECREASED ENGINE CABIN NOISE, VIBRATION & HEAT

• BROAD RANGE OF POWER OPTIONS INCLUDING ZERO-EMISSIONS

• COMPONENTS EMPLOY EXISTING & PROVEN TECHNOLOGIES

• PROVISION FOR SIGNIFICANT INCREASE IN SPEED

• SCALABLE—DRONES TO HEAVY LIFT HELICOPTERS

• INSURANCE COST REDUCTION SHOULD ENSUE 

• US PATENT 11753155 ISSUED & FOREIGN PATENTS PENDING                                           

SEE www.ThrustDrive.com FOR 1/6 SCALE FLIGHT VIDEOS AND COMPREHENSIVE INFORMATION
CONTACT dpdewalch@dewalch.com or 281-813-8292

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