Invention Grant
US08528863B2 Multi-layer metal/shape memory polymer roll-up wing structures for fitment-constrained air vehicles
有权
多层金属/形状记忆聚合物卷起翼结构用于装备受限的空中飞行器
- Patent Title: Multi-layer metal/shape memory polymer roll-up wing structures for fitment-constrained air vehicles
- Patent Title (中): 多层金属/形状记忆聚合物卷起翼结构用于装备受限的空中飞行器
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Application No.: US12463400Application Date: 2009-05-10
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Publication No.: US08528863B2Publication Date: 2013-09-10
- Inventor: Terry M. Sanderson , Brian J. Gowler , David R. Sar , Thomas P. McCreery
- Applicant: Terry M. Sanderson , Brian J. Gowler , David R. Sar , Thomas P. McCreery
- Applicant Address: US MA Waltham
- Assignee: Raytheon Company
- Current Assignee: Raytheon Company
- Current Assignee Address: US MA Waltham
- Agent Eric A. Gifford
- Main IPC: B64C3/20
- IPC: B64C3/20 ; B64C3/56

Abstract:
A laminated wing structure includes at least one layer of metal material and at least one layer of a shape memory polymer (SMP) material. The SMP is heated to a temperature in its glass transition band Tg to roll the wing around the air vehicle into a stored position. The metal layer(s) must be thin enough to remain below its yield point when rolled up. In preparation for launch, the SMP material is thermally activated allowing the strain energy stored in the layer of metal material to return the wing to its deployed position at launch. Once deployed, the SMP cools to its glassy state. The SMP material may be reinforced with fiber to form a polymer matrix composite (PMC). SMP may be used to provide shear strain relief for multiple metal layers. By offloading the motive force required to return the wing to its original deployed position from the SMP to the metal, the polymer does not acquire a permanent set and the wing may be deployed accurately.
Public/Granted literature
- US20100282906A1 MULTI-LAYER METAL/SHAPE MEMORY POLYMER ROLL-UP WING STRUCTURES FOR FITMENT-CONSTRAINED AIR VEHICLES Public/Granted day:2010-11-11
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