Spar cap

A set of tools is required for the manufacture of a turbine blade these include the two half shells in a pair of moulds, the web stiffeners and the spar cap. Further moulds may be associated with blade edges and root ends. 

Mohamed, M.H., Wetzel, K.K., 2006. 3D woven carbon/glass hybrid spar cap for wind turbine rotor blade. Trans. ASME J. Solar Energy Eng. 128, 562-573. 

A spar cap, web stiffeners and other details are installed in one of the halves of the blade mould and adhesive is applied to the exposed bonding edges of these units. The seeond half of the mould, containing the half-shell, is then turned over and lowered onto the first the adhesive is then allowed to enre, thus joining the two halves of the wind turbine blade together. The steel support frames are hinged together at one side to enable the mould to... 

Finally, Fig. 5 is a cross section of a typical honeycomb sandwich trailing edge wing flap. Note the use of high density honeycomb to reinforce the area adjacent to the spar caps used for attachment to the main wing stracture. 

The Wood and Lay spar torpedo was used in the United States Navy, notably by Lieutenant Cushing in destroying the Confederate ram " Albemarleat Plymouth, N. C.. in 1864. It was attached to a spar by means of the lug b run beneath the enemy s vessel detached from the spar by a device for that purpose allowed to rise against the vessel by ite flotative power, when the lanyard was withdrawn, allowing the ball a to fall upon the cap c and explode It and the charge. 

Spar Ceps, BL65 Splice. Web Stilleners. Nacelle Attach Plates. Cap to Web end Cap to Skin Panel Attachments... 

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