초록 ▼

A structurally strong heat insulator is depicted in the backing plate and pressure plate regions of an aircraft multiple disc brake assembly. The insulator is constructed from a plurality of perforated metal sheets in order to withstand the large compressive forces experienced during a brake applica

A structurally strong heat insulator is depicted in the backing plate and pressure plate regions of an aircraft multiple disc brake assembly. The insulator is constructed from a plurality of perforated metal sheets in order to withstand the large compressive forces experienced during a brake application. The sheets are compiled randomly into an insulating stack which thereby offsets the holes in adjacent sheets. The holes decrease the surface area and the offset increases the heat conduction path, both which reduce the amount of heat cnducted through the stack.

대표청구항 ▼

An aircraft wheel and multiple disc brake assembly having: a wheel member to be braked rotatably mounted on said aircraft; torque-absorbing means mounted on said aircraft for effectuating said braking of said wheel, said torque-absorbing means including a backing plate member, an axial member, and a

An aircraft wheel and multiple disc brake assembly having: a wheel member to be braked rotatably mounted on said aircraft; torque-absorbing means mounted on said aircraft for effectuating said braking of said wheel, said torque-absorbing means including a backing plate member, an axial member, and a pressure plate member axially slidable along said axial member; rotor members and stator members located between said pressure plate member and said backing plate member, said rotor and stator members being axially slidable on said wheel member and said axial member, respectively, whereby the engagement thereof causes said braking of said wheel member; and brake application means secured to said torque-absorbing means for urging said pressure plate member toward said backing plate member when a brake application is effected, thereby compressing said rotor and stator members between said backing plate member and said pressure plate member, said compressing of the rotor and stator members resulting in generation of heat when the wheel member is rotating, some of said heat being conducted from said rotor and stator members into said backing plate member, wherein the improvement comprises first insulation means secured to said backing plate member and connected to one of said rotor and stator members for receiving said brake application forces and for controlling the conduction of heat to said backing plate member, said first insulation means having a first plurality of sheet members defining a first insulation stack, each of said sheet members having a defined thickness of material to create opposite heat conduction surface areas at the ends of said material thickness, said first insulation stack having said surface areas adjacent said sheet members bearing against one another with one of said surface area of one of said sheet members defining the top of said first insulation stack and one of said surface area of another said sheet members defining the bottom of said first insulation stack, said top receiving said brake application forces and said heat and said bottom transmits the same to said backing plate member, each of said sheet members having a plurality of holes passing completely through its said material thickness to reduce the amount of said material on both of said surface areas of said sheet members, said first insulation stack having at least some of said holes of said sheet members at least partially offset from said holes of adjacent sheet members whereby those of said offset holes abut some of said material of said adjacent sheet members to increase the length of the heat conduction path through said first insulation stack and thereby reduce the overall conduction of heat from said rotor or stator members into said backing plate membEr to allow the generation of temperature up to 1500°F. in said rotor and stator members without damage to said backing plate member.