NASA SBIR 2007 Solicitation


PROPOSAL NUMBER: 07-1 A2.10-8515
PROPOSAL TITLE: 3D Warping Actuation Driven Dynamic Camber Control Concept for Helicopter Rotor Blades

SMALL BUSINESS CONCERN (Firm Name, Mail Address, City/State/Zip, Phone)
Materials Technologies Corporation
57 Maryanne Drive
Monroe, CT 06468 - 3209
(203) 874-3100

PRINCIPAL INVESTIGATOR/PROJECT MANAGER (Name, E-mail, Mail Address, City/State/Zip, Phone)
Serkan Ozbay
57 Maryanne Drive
Monroe, CT 06468 - 3209
(203) 874-3100

Expected Technology Readiness Level (TRL) upon completion of contract: 3 to 4

TECHNICAL ABSTRACT (Limit 2000 characters, approximately 200 words)
In a rotorcraft, optimized camber change not only reduces vibratory hub loads and noise but also increases available thrust and improved flight control augmentation. Therefore, the ability to dynamically change airfoil camber is a significant technology advancement leading to improved overall rotorcraft performance. Research efforts in recent years have led to the application of active material actuation for rotorcraft blades in order to dynamically change blade camber. Small-scale bench top system validations have been successful. However, when scaled-up to full-scale aircraft, the performance of current actuation systems in a demanding rotor blade environment gets significantly degraded by operational factors including friction, free play, and, aerodynamic and inertial loads.

We propose a unique three dimensional concept wherein the typically closed section blade is cut open to create a torsionally compliant mechanism that acts as its own amplification device; the deformation of the blade is dynamically controlled by out-of-plane warping. Our innovative approach for camber control is a radical departure from the current techniques. The proposed development and engineering effort will lead to a new camber control technology suitable for full-scale aircraft that would result in improved operational efficiencies at lower costs. Concept feasibility will be demonstrated both analytically and through experiments on blade sections of a Sikorsky Blackhawk. A Phase II program will follow for technology scale-up and optimized full blade testing.

POTENTIAL NASA COMMERCIAL APPLICATIONS (Limit 1500 characters, approximately 150 words)

POTENTIAL NON-NASA COMMERCIAL APPLICATIONS (Limit 1500 characters, approximately 150 words)
- All commercial rotorcraft manufacturers. Improving overall rotorcraft performance as well as safety at a lower operational cost would be a major motivation for the rotorcraft industry to implement this technology.

- Worldwide Wind Turbine industry for power generation. An effective camber change is needed to benefit most from the dynamic airflow through wind turbines. The potential for this rapidly growing "green" power generation industry is enormous.

NASA's technology taxonomy has been developed by the SBIR-STTR program to disseminate awareness of proposed and awarded R/R&D in the agency. It is a listing of over 100 technologies, sorted into broad categories, of interest to NASA.

Controls-Structures Interaction (CSI)
Launch and Flight Vehicle
Structural Modeling and Tools

Form Generated on 09-18-07 17:50