Active Knits for Radical Change Air Force Structures
Abstract
There is a strong Air Force need for actuators capable of simultaneous large forces and strains in the form of complex three-dimensionally distributed actuation motions. A new active material knitted architecture generates complex three-dimensional distributed motions with simultaneous large force and strain within a compact package. The goal of this research was to establish a model-based foundation for exploration of this promising new actuation approach. Three research tasks were completed. The first task developed an active knit architectural hierarchy identifying the actuation mechanisms and correlating motions to hierarchical levels, enabling exploration of the full breadth of possible actuation motions. The second task derived a two dimensional analytical model, providing a tractable tool for prediction, design, and tailoring of planar contractile active knits. The third task demonstrated a flow control case study which evaluated the applicability of active knits and investigated their ability to create the desired kinematic actuation motions under the aerodynamic loads required for flow control. This research provides the fundamental knowledge of active knits required to further develop them as an enabling technology for a new generation of Air Force applications with novel functionality, expanding operational platform for greater mission adaptability.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 2012
- Accession Number
- ADA579083
Entities
People
- Diann Brei
- Jonathan Luntz
- Julianna Abel
Organizations
- University of Michigan