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Copyright © 2016 Wetzel Engineering. All Rights Reserved.
Space Frame Development Program:
Funded by DOE (Phase I and Phase II SBIR grants) and WEI
Motivation - development of enabling technologies for the transportation of large wind turbine blades for land-based machines
Eliminate expensive and heavy shell core materials
Eliminate shell infusion-related quality issues
Reduce Large Machined Tooling & Major Part Size
Enable improved QC through elimination of blind bonds
Enable transportation of smaller blade sections with final in-field assembly
Improve reliability and MTBF
Copyright © 2016 Wetzel Engineering. All Rights Reserved.
Copyright © 2016 Wetzel Engineering. All Rights Reserved.
Copyright © 2016 Wetzel Engineering. All Rights Reserved.
Conceptual Design & Feasibility
Study
DOE Phase IEngineering, Trade
Studies, & Commercialization
Potential
Advanced FEM
Development
10m Subsection Design &
Fabrication
34.5m Blade Engineering for 1.5MW Platforms
83m Blade Engineering
for 6MW Platforms
Detailed Engineering &
Prototype Fabrication
DOE Phase II
Successful Technology
DevelopmentDespiteLimited
Commercial Viability
Copyright © 2016 Wetzel Engineering. All Rights Reserved.
Copyright © 2016 Wetzel Engineering. All Rights Reserved.
Copyright © 2016 Wetzel Engineering. All Rights Reserved.
Copyright © 2016 Wetzel Engineering. All Rights Reserved.
Copyright © 2016 Wetzel Engineering. All Rights Reserved.
Copyright © 2016 Wetzel Engineering. All Rights Reserved.
Copyright © 2016 Wetzel Engineering. All Rights Reserved.
Copyright © 2016 Wetzel Engineering. All Rights Reserved.
Copyright © 2016 Wetzel Engineering. All Rights Reserved.
Copyright © 2016 Wetzel Engineering. All Rights Reserved.
Copyright © 2016 Wetzel Engineering. All Rights Reserved.
• Elimination of structural shell technically feasible
• Space Frame yields little cost savings
- Cost savings from modularization > Space Frame
- High mass penalty to recover edgewise stiffness
- Significantly increased part count
• Hybrid solution may offer more benefits
- Reduction in cost & weight associated with shell core still
possible
• Component modularization could encourage offshoring
- Inherent consequence of modularization, not just Space
Frame