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The belt-rib concept: a structronic approach to variable camber.

Campanile, L. F. and Sachau, D. (2000) The belt-rib concept: a structronic approach to variable camber. Journal of Intelligent Material Systems and Structures, 11 (3), pp. 215-224. Sage Publications. ISSN 1045 - 389X.

Full text not available from this repository.

Abstract

The belt-rib concept for lifting surfaces with variable camber evolved at DLR recently as one of the most promising solutions for the adaptive wing. With the belt-rib idea the adaptive wing issue is approached in a new way: instead of a "mechatronic" solution with hinges or linear bearings a "structronic" solution is chosen, where distributed flexibility allows the desired shape changes. The resulting system is not only easier to maintain due to the absence of wear, but also is structurally more reliable and substantially lighter. The new concept evolves from the classical wing structure. The classical rib, which i s in charge of the wing section's stiffness, is replaced by a "belt rib," which allows camber changes within given limits while leaving the remaining in-plane stiffness properties of the section widely unchanged. The evolution of the belt-rib concept was accompanied by experimental tests on different prototypes. After a first development stage, in which mainly the system's shape adaptability and the overall stiffness properties were investigated, further steps followed, focused on manufacturing, weight optimization and strength aspects. Recent developments dealt with the construction of a model with solid-state hinges, realized as hybrid glass fiber-carbon-fiber reinforced composite s tructure. The model is actuated mechanically by cables, which can be replaced by multifunctional actuators-like shape memory wires-in the future. The paper opens with an introduction about shape control of aerospace structures and variable camber in particular, in which the major advantages of a "structronic" approach with respect to classical solutions are discussed. Then the fundamentals of the belt-rib concept are sketched, with some significant results of the feasibility proof phase, followed by the description of the last developments. The conclusion summarizes the potential of a structronic approach to shape control with an outline of possible future work.

Document Type:Article
Additional Information: LIDO-Berichtsjahr=2005,
Title:The belt-rib concept: a structronic approach to variable camber.
Authors:
AuthorsInstitution or Email of Authors
Campanile, L. F.UNSPECIFIED
Sachau, D.UNSPECIFIED
Date:2000
Journal or Publication Title:Journal of Intelligent Material Systems and Structures
Refereed publication:Yes
In ISI Web of Science:Yes
Volume:11
Page Range:pp. 215-224
Publisher:Sage Publications
ISSN:1045 - 389X
Status:Published
Keywords:belt-rib concept
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Aeronautics
HGF - Program Themes:other
DLR - Research area:Aeronautics
DLR - Program:L ST - Starrflüglertechnologien
DLR - Research theme (Project):L -- no assignement
Location: Braunschweig
Institutes and Institutions:Institute of Composite Structures and Adaptive Systems
Deposited By: Sibylle Wolff
Deposited On:10 Feb 2007
Last Modified:27 Apr 2009 04:42

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