Composite material main bearing airfoil applying dovetail joint structure and preparation method of composite material main bearing airfoil

The invention relates to a composite material main bearing airfoil applying a dovetail joint structure and a preparation method of the composite material main bearing airfoil. The main bearing airfoil comprises sandwich foam, a metal joint and a skin, the sandwich foam is connected with the mortise...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	WANG XINYI, GONG WENHUA, HAN LEI, SUN HUI, FENG WEIZHENG
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	AEROPLANES AIRCRAFT AVIATION BLASTING COSMONAUTICS DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS ORMACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS,CLIPS, WEDGES, JOINTS OR JOINTING ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING HELICOPTERS LIGHTING MECHANICAL ENGINEERING PERFORMING OPERATIONS THERMAL INSULATION IN GENERAL TRANSPORTING WEAPONS
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Beschreibung
Zusammenfassung:	The invention relates to a composite material main bearing airfoil applying a dovetail joint structure and a preparation method of the composite material main bearing airfoil. The main bearing airfoil comprises sandwich foam, a metal joint and a skin, the sandwich foam is connected with the mortise of the prefabricated dovetail joint on the metal joint through the tenon of the prefabricated dovetail joint, or the sandwich foam is connected with the tenon of the prefabricated dovetail joint on the metal joint through the mortise of the prefabricated dovetail joint; and the outer parts of the sandwich foam and the metal joint are coated with the skin. The sandwich foam and the skins, namely the composite panels, on the upper portion and the lower portion of the sandwich foam can be designed to be variable in thickness so as to meet the trend change that the load borne by the main bearing airfoil in the working process is gradually reduced from the root to the wingtip. The sandwich foam in the airfoil is connect