Whitestone Poncelet RISEC Project Final Technical Report Page: 38 of 108
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DE-EE0004573
Whitestone Poncelet RISEC Project
Whitestone Power and Communications
FY2011
Conclusions
After experimental testing was concluded, the final design was a turbine blade constructed of one
inch thick HDPE plate. This was bent and groove-welded to form a curve as specified, and one
inch thick ribs were groove-welded onto the sides. In experimental testing, these blades were
both able to sustain tip displacements of at least five inches, and tip loading of at least three
thousand pounds, although a crack did appear at a welded seam of one of the blades when
loaded.
Turbine Section Design
The turbine section itself underwent considerable design changes. Initially, a spoked wheel
design with a central axle was considered. The initial design incorporated spokes which
transferred torque from the blades to the central axle, which also supported the transverse load of
the total turbine weight.
Figure 23: Early turbine and blade assembly
An initial design specification of an 8 inch diameter axle with 0.75 inch wall thickness and raised
bosses for spoke attachment was suggested. An FEA calculation was made upon this model.
The FEA model included no gravitational loading and simplified the mounting as a fixed
restraint at the transmission end of the axle and a axial/radial bearing restraint at the other. A
cumulative 96,000 foot pound torque was applied in 19,200 lb increments to each of thePage 38 of 51
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Hasz Consulting, LLC; Communications, Whitestone Power and & Engineers, CE2. Whitestone Poncelet RISEC Project Final Technical Report, report, September 23, 2011; United States. (https://digital.library.unt.edu/ark:/67531/metadc834796/m1/38/: accessed April 19, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.