Schempp-Hirth dealers now sell the winglet mod (TN-278-38) for Standard Cirrus gliders. The cost is about 1,975 euros (2,500 USD). Delivery takes about 3-4 weeks.
Jari Hyvärinen's TN-278-38 Winglets
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Schempp-Hirth dealers now sell the winglet mod (TN-278-38) for Standard Cirrus gliders. The cost is about 1,975 euros (2,500 USD). Delivery takes about 3-4 weeks. Jari Hyvärinen's TN-278-38 Winglets |
Read The tip of the iceberg for a brief history of the development of winglets.
Jim Hendrix installed custom winglets on #60 and then found that the toe-out angles were wrong.
So it became necessary to adjusted the toe-out angles of the completed winglets.
His method was to bore a hole vertically through each winglet and its attachment tube,
through which he placed a pivot pin, about which each winglet was rotated to the correct angle.
He then routed out the attach tubes and fore/aft drag pins. The attach tubes were reset to the
correct angles with the winglets on the wings.
The winglet roots were reworked to fit the wings properly and the drag pins were reset and the
winglets were repainted. It makes an interesting set of pictures.
(See the pictures.)
M&H Soaring is closely affiliated with Mark D. Maughmer, Penn State University professor of aerodynamics and renowned winglet designer. Schempp-Hirth has adopted Mark's winglets for their Ventus 2ax and Ventus 2bx glider and has issued a technical note for installing them on the Discus glider (below). M&H Soaring sells Maughmer designed winglet installations for a number of gliders.
Following are links to technical articles about winglets at the M&H web site:
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