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ROBUST (Rotorcraft Blade Universal Shape Transformation) System for Controlled…

Award Information

National Aeronautics and Space Administration
Award ID:
Program Year/Program:
2009 / SBIR
Agency Tracking Number:
Solicitation Year:
Solicitation Topic Code:
Solicitation Number:
Small Business Information
57 Maryanne Drive Monroe, CT -
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Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Phase 1
Fiscal Year: 2009
Title: ROBUST (Rotorcraft Blade Universal Shape Transformation) System for Controlled Aerodynamic Warping
Agency: NASA
Contract: NNX09CC07P
Award Amount: $100,000.00


In rotorcraft flight dynamics, optimized warping camber/twist change is a potentially enabling technology for improved overall rotorcraft performance. Recent research efforts have led to the application of active materials for rotorcraft blade actuation to dynamically change the blade camber/twist. However, full-scale aircraft application of these systems in demanding rotor blade environments gets significantly degraded by dynamic operational factors including friction, free play, and, aerodynamic and inertial loads. In a radical departure from current techniques, MTC proposes an innovative three-dimensional concept wherein typically closed section blade is cut open to create a torsionally compliant mechanism that acts as its own amplification device; blade deformation is dynamically driven by out-of-plane warping. During Phase I, this concept will be analyzed under dynamic operational factors. Required analytical and finite element tools will be developed within the framework of multibody dynamics that enable comprehensive aeroelastic evaluation of the concept. Feasibility of the concept for (i) swashplateless rotor system and (ii) higher harmonic control will be investigated and first-order actuator and blade cross-sectional design requirements will be established. Applications include both rotorcraft and fixed wing aircraft in the government and commercial sectors.

Principal Investigator:

Dr. Yogesh Mehrotra Materials Technologies Corp
Principal Investigator

Business Contact:

Dr. Yogesh Mehrotra
Business Official
Small Business Information at Submission:

Materials Technologies Corporation
57 Maryanne Drive Monroe, CT 06468

EIN/Tax ID: 061200419
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No