公开(公告)号：US3949956A

公开(公告)日：1976-04-13

申请号：US441331

申请日：1974-02-11

申请人： Alberto Alvarez-Calderon

发明人： Alberto Alvarez-Calderon

IPC分类号： B64C9/28 ,  B64C3/50

CPC分类号： B64C9/28 ,  Y02T50/32

摘要： An airfoil is specified with a double slotted leading edge flap having two members and adapted to be used together with a multi-slotted trailing edge flap. The leading edge flap uses two slots for landing and one or no slots for take off. The front leading edge flap member has specific shape parameters and curvatures. The rear leading edge member defines a slot substantially downstream of the cruise leading edge. Ahead of the trailing edge flap slot, there is provided a special slot across the wing's surface in special cooperation with a spoiler. The airfoil surface between the downstream slot of the leading edge flap and the special slot near the trailing edge flap is short and with negligible camber. Special consideration is given to wing torsion, fuel volume, number of slots, and effect of varying airfoil thickness on flap geometric and aerodynamic parameters.

公开(公告)号：US4072018A

公开(公告)日：1978-02-07

申请号：US627685

申请日：1975-10-31

申请人： Alberto Alvarez-Calderon

发明人： Alberto Alvarez-Calderon

IPC分类号： E02D17/12 ,  E21C41/16 ,  E21F15/08 ,  E21F15/00 ,  E21F13/00

CPC分类号： E02D17/12 ,  E21C41/16 ,  E21F15/08

摘要： In this invention there is taught the use of air tubes or fluid-filled containers to define permanent hollow tubular space within a body of solidified fill material placed in a mining excavation. The fill uses a mixture of solids and liquids with the addition of a structurally binding substance such as cement in order to make the fill substance permanent and capable of providing structural integrity and strength in the fill notwithstanding the empty tubular space. The empty tubular space can be used in accessways for mining and hauling of ore, or ventilation; it can also be used to provide volume within which to place fine component of tailings of a concentrator, or to store contaminants, or to route fill material. The tubular empty space within the fill reduces the weight, time and cost of the fill operation, and eliminates the need to drive galleries in waste rock, or of constructing costly timbered galleries or steel tubes within the stope prior to backfilling with tails. The fill provides support to the excavation, and permits work to be done below or above the fill substance. Mining methods are specified for the invention, including the use of raises, galleries and ramps in stopes. Apparatus is provided for the construction of large diameter inflatable tubes, having low surface tension. Air tubes that permit passage of workmen below the tube are specified, to permit progress of work while concrete roofs are setting. Special designs of hollow inflatable tubes using ring elements and axial elements are specified. There is taught method and apparatus for the use of inflatable tubes acting as moulds or forms for construction of concrete tubes, in which the tube's fabric substitutes firstly conventional wood or metal forms, and can remain integrated to the tube's concrete fill providing tension elements in substitution of steel.

摘要翻译： 在本发明中，教导了使用空气管或流体填充的容器来在放置在采矿开挖中的固化填充材料的主体内限定永久的中空管状空间。 填充物使用固体和液体的混合物，添加结构结合物质如水泥，以使填充物质永久，并且能够在填充物中提供结构完整性和强度，尽管空管状空间。 空的管状空间可用于采矿和运送矿石或通风的通道; 它也可以用于提供容量以在其中放置浓缩器尾矿的精细成分，或者存储污染物，或者填充材料的路线。 填充物中的管状空间可减少填充操作的重量，时间和成本，并且在回填尾部之前不需要在废弃岩石中驱动画廊，或者在站内建造昂贵的木材画廊或钢管。 填充提供对挖掘的支持，并允许在填充物质的下方或上方进行工作。 为本发明规定了采矿方法，包括在起落架中使用升降机，画廊和坡道。 提供了用于构造具有低表面张力的大直径可充气管的装置。 规定允许工人在管下通过的空气管，以允许工作进行，同时混凝土屋顶正在安装。 规定了使用环形元件和轴向元件的中空充气管的特殊设计。 已经教导了使用作为用于构造混凝土管的模具或形式的充气管的方法和装置，其中管的织物首先代替常规的木材或金属形式，并且可以保持与管的混凝土填充物一体化，以提供替代的张力元件 的钢。